Arguments
Recent Comments
Prev 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 Next
Comments 16701 to 16750:
-
NorrisM at 13:45 PM on 29 November 2017American leaders should read their official climate science report
nigel @ 9
In previous postings I indicated that I personally have been moved by the two papers by Derek Abbot suggesting a thermal solar thermal/hydrogen solution which would require a continental HVDC system. I had hoped we could get a discussion going on the benefits of PV solar versus thermal solar (and whether we should be focussing on electric cars versus hydrogen) based upon those 2010 papers but my understanding is that such a discussion is beyond the focus of this website. As well, we again face political reality in the US.
-
michael sweet at 13:45 PM on 29 November 2017The Road to Two Degrees, Part Two: Are the experts being candid about our chances?
Norrism:
It is now cheaper to build out new wind and solar power plants than it is to run old coal power plants that have no mortgage expense. It will at least double the cost of coal power to do CCS with it. Goldman Sachs expects wind and solar to drop in price another 40% in the next decade (and in the past renewables have exceeded expectations of cost savings).
It will be much cheaper to just build out wind and solar than to waste the money doing CCS research.
-
michael sweet at 13:33 PM on 29 November 2017OA not OK part 20: SUMMARY 2/2
Aleks,
Nigelj, MA Rodger and I have shown that all your arguments are false or based on incorrect calculations. It is not our problem if you cannot understand basic facts and data. At this site you have to support your arguments with more than your opinion. You will never convince anyone here.
-
NorrisM at 13:08 PM on 29 November 2017The Road to Two Degrees, Part Two: Are the experts being candid about our chances?
michael sweet @ 42
It will be interesting to see if this Economist article might prompt the Republicans to start thinking more about spending more funds on CCS research because it would "fit" with their agenda of staying with fossil fuels. I may be wrong but "intuitively" this might be a better tact to use with the Republicans while they are in power. But capturing CO2 from the air rather than during the combustion process does not sound promising even based upon my limited understanding of physics.
-
One Planet Only Forever at 11:53 AM on 29 November 2017American leaders should read their official climate science report
nigelj, NorrisM
The need to rapidly transition from burning fossil fuels to much more sustainable and less damaging ways of obtaining personal benefit has been well understood since the 1960s.The fact that research effort is still being put into fossil fuel for burning rather than have that effort be on improvement and expansion of better ways of behaving is Proof that the current socio-polotical-economic-environmental games played by humans are fatally flawed.
The major flaws are 'pursuits of Private Interests' winning the ability to compromise the 'Global Public Interest in developing a lasting better future for humanity'. The focus is on people pursuing the best possible present for themselves any way they can get away with. Those Private Interests compromise the environment and the future whenever they are Balanced with concern for the environment or Others.
-
aleks at 11:45 AM on 29 November 2017OA not OK part 20: SUMMARY 2/2
Michael sweet @76, @77
I did not accept that “not enough NO2 and SO2 are emitted to affect ocean pH”. In any case, the effect of these gases on pH will be much greater than of CO2. Great emission of SO2 during industrial revolution is shown in MA Rodger's post #23 here:
https://www.skepticalscience.com/jellyfish-teach-us-about-climate-change.html#comments
“The Pacific Ocean water is lower in pH because it is older than the Atlantic ocean. One time more CO2 has dissolved lowering the pH in the Pacific ocean”. This explanation contradicts not only the fact that CO2 concentration in the surface layer is approximately the same, but also the elementary logic. CO2 in seawater is in dynamic equilibrium with CO2 in the atmosphere. Partial pressure of CO2 and water surface temperature increased and decreased countless times, so it's impossible to suggest that many millions of years enhanced concentration of CO2 in Pacific left unchanged.
@77. About “dry wall plant”. You said before that this object is made from the material extracted from the scrubber after absorption of gas emission from the coal power plant. I'd like to recall that the absorbent in this case is Ca(OH)2 that reacts not only with SO2, but with CO2 that is the main component of emitted gases, hence, scrubber material consists mainly of CaCO3. This issue is relevant to our main problem, since it is about whether scrubbing can eliminate SO2 and NO2 emissions into atmosphere. Evidently, it can not, because this process is expensive, time and labor consuming and leads to a huge amount of solid waste. Therefore, emissions of acid gases into the atmosphere do not stop, especially in China, India which consume more than half the world's coal production.
I will not discuss your assertion about complete dissociation of H2CO3 in alkaline buffer solution based on “a reference from expert”. There is no specific calculation – there is no discussion. Let's consider real values of CO2 in seawater (table 1.2, p.24) in the work I cited before:
https://www.iaea.org/ocean-acidification/act7/Guide%20best%20practices%20low%20res.pdf The concentrations of carbon containing species in seawater are (micromole /kg): bicarbonate 1718, carbonate 239, dissolved carbon dioxide 9.6. Even assuming that all CO2 converts to H2CO3 and it dissociates completely, amount of [H+] from CO2 is less than from 1mg NO2 converted to HNO3 (~22 micromole [H+]). -
Daniel Bailey at 10:28 AM on 29 November 2017Greenland has only lost a tiny fraction of its ice mass
"For the last 18 months, DMI shows Greenland ice increasing significantly"
Nope. Does-not-pass-the-sniff-test.
Per the DMI, the authority in charge of tracking the Greenland Ice Sheet:
"Over the year, it snows more than it melts, but calving of icebergs also adds to the total mass budget of the ice sheet.
Satellite observations over the last decade show that the ice sheet is not in balance.
The calving loss is greater than the gain from surface mass balance, and Greenland is losing mass at about 200 Gt/yr."
Embolding added.
So the DMI is in perfect agreement with NASA:
"Data from NASA's GRACE satellites show that the land ice sheets in both Antarctica and Greenland [below] have been losing mass since 2002. Both ice sheets have seen an acceleration of ice mass loss since 2009. (Source: GRACE satellite data [to January 2017])"
Debunked.
-
nigelj at 10:15 AM on 29 November 2017An Inconvenient Sequel – the science, history, and politics of climate change
Sidd, what you say makes sense.
Graph of sea level rise projections for my country New Zealand here, out to 2100.
This is a quadratic curve. I can't see how it would ever become exponential and why melting would do this, melting is not like population growth! A quadratic curve is more than bad enough to worry about.
-
michael sweet at 07:08 AM on 29 November 2017The Road to Two Degrees, Part Two: Are the experts being candid about our chances?
Norrism:
And then deniers say scientists are being "alarmist" and there is no problem.
-
nigelj at 06:54 AM on 29 November 2017American leaders should read their official climate science report
Norris actually you are more an an eternal optimist on fossil fuel extraction technology and eternal pessimist on renewable energy technology. And this contradiction makes no sense at all, on the basis of actual evidence, and is clear example of confirmation bias. Both technologies have potential for development, and if anything newer technologies like renewable energy have more room for innovation at this stage than oil extraction, simply because they are so new.
-
nigelj at 05:08 AM on 29 November 2017American leaders should read their official climate science report
Norris and others, fracking is scraping the bottom of the barrel in global oil shale terms. However America has over half the worlds shale oil reserves, so its not going to run out of shale oil anytime soon, described here.
Norris you are an eternal optimist on technology and eternal pessimist on scientific modelling. Fracking has found more efficient technologies but there are limits to the process. Consider in comparison, conventional oil extraction went through a process of rapid innovation, but hasn't changed much now in decades. As many wells are half used up extraction gets more expensive. Oil from fracking is already expensive and its not going to magically become cheaper and cheaper forever. There are limits to what technology can do.
The following is an interesting summary on oil situation globally and in America here.
This is interesting in particular:
"That said, the Rystad report also illustrates why it’s critical for the U.S. to focus on developing other, renewable forms of energy. “Rystad Energy now estimates total global oil reserves at 2092 billion barrels, or 70 times the current production rate of about 30 billion barrels of crude oil per year, the report reads. “This data confirms that there is a relatively limited amount of recoverable oil left on the planet. With the global car-park possibly doubling from 1 billion to 2 billion cars over the next 30 years, it becomes very clear that oil alone cannot satisfy the growing need for individual transport.”
-
nigelj at 04:57 AM on 29 November 2017American leaders should read their official climate science report
"As the cost of low carbon alternatives falls and concern over the consequences of higher carbon sources grows we may reach a point here the curves cross and the former replaces the latter."
This is a very good point, and probably true.
Humans process information and make decisions based on mentally weighing costs, benefits and probabilities of these things happening, according to psychological research. I dont see that climate issue would be different. I dont know when the crossover point would come to cause massive change, but it may not be far away.
The important thing is to ensure people have good information on which to base such decisions, as opposed to climate denialist junk.
-
NorrisM at 03:42 AM on 29 November 2017The Road to Two Degrees, Part Two: Are the experts being candid about our chances?
Moderator
Thanks very much for the reference to the three valuable Andy Skuce essays on this very issue of the requirement of “negative emissions” to meet the assumption of most of the IPCC global climate models. It is unfortunate that he is no longer with us to respond to this post. I have read all three essays along with the other two recent discussions of this topic. At your suggestion, I am reposting my comments on the second of the three essays by Andy Skuce in November 2015. This one was titled “Are the experts being candid about our chances?”
Andy Skuce’s articles were directed at the above topic which has now been raised front and centre by Economist’s November 18, 2017 edition lead article. The front page of the Economist is entitled “What they don’t tell you about climate change”.
Here is a salient comment from the Economist lead article:
“Fully 101 of the 116 models the IPCC uses to chart what lies ahead assume that carbon will be taken out of the air in order for the world to have a good chance of meeting the 2° C target. The total amount of CO2 to be soaked up by 2100 could be a staggering 810bn tonnes, as much as the world’s economy produces in 20 years at today’s rate. Putting in place carbon-removal schemes of this magnitude would be an epic endeavor even if tried and tested techniques existed. They do not.”
I highly recommend that everyone read all three of Andy Skuce’s essays as well as the lead article of the Economist. In the above essay, Andy Skuce in 2015 refers to a paper by Kevin Anderson raising this very issue. Here is Andy Skuce’s summary of the Anderson 2015 paper:
“Anderson’s case, in summary, is that most of us, whether scientists, policy makers or citizens, are suffering from cognitive dissonance. We acknowledge the mathematics of carbon budgets compatible with the 2°C target, yet are unable to face the revolutionary implications of what we need to do to get there. Put simply, our entire way of life for most of us in rich countries—and for an increasing number of rich people in poor countries—has to change radically, starting now.”
I am personally blown away by this revelation that we not only need massive reductions in emissions to meet a 2° C target but also massive “negative emissions” from technologies that today are unproven. I have to agree that there has to be some "cognitive dissonance" going on in that in about 10 months of focussing on issues related to climate change I had never heard of this major issue with the underlying assumptions of most of the IPCC global climate models.
The moderator has referred to me two more recent discussions of this issue. I highly recommend reading the Elizabeth Kolbert November 20, 2017 article in the magazine The New Yorker which, coincidentally, covers the same territory as the November 18, 2017 edition of Economist. This paper discusses various technologies that are being considered (one within about 30 miles from our home in West Vancouver) but clearly concludes that today there is no proven technology to achieve the required negative emissions.
I hope this post will provoke some discussion of the various technologies being considered. From my reading of the recent discussions, BECSS seems to be the “front runner” but as the Economist says:
“Persuading Earth’s swelling population to plan an India’s worth of new trees or crops to produce energy, as the climate simulations require, looks highly improbable”.
What do we do?
Perhaps someone could point out where in the Fifth IPCC Assessment (and for that matter in the recent American Global Change Research Report) this assumption of negative emissions (and the ramifications that at the present time there are no proven technologies to achieve these negative emissions) is discussed.
Moderator Response:[JH] You're welcome and thank you for your empathy re Andy Skuce.
-
NorrisM at 02:07 AM on 29 November 2017American leaders should read their official climate science report
DrivingBy @ 4
"He has very limited control over some barely break-even rapidly depleting oil (US shale)."
As much as I would l like to hear that this is the case, my understanding is that the "tight oil" industry continually finds ways to reduce costs by more efficient fracture stimulation methods. Do you have any backup for your statement above regarding "rapidly depleting shale oil"?
I remember years ago when horizontal fracing (where did the "K" come from in fracture stimulation?) has opened up tight natural gas reserves. Everyone said it would be impossible to apply this technology to oil. We all know what happened there.
-
DrivingBy at 23:07 PM on 28 November 2017American leaders should read their official climate science report
Whoops, I did not use a text editor. Pardon the unedited and disjointed draft above; while the substance is what I meant, it's is mis-connected pieces.
-
DrivingBy at 23:04 PM on 28 November 2017American leaders should read their official climate science report
@badgering
Any one person has little effect on the course of AGW. You might equally well say: "What are the chances of Obama's rolling back the rise of the sea?"
Actually, the USA's C02 output has levelled off. Sooner or later, perhaps later than is wise, public opinion in the USA will consider it to be a both undesirable and significant. Lyndon Johnson was warned of this phenomenon in the 1960s, and of course he blew it off. As the cost of low carbon alternatives falls and concern over the consequences of higher carbon sources grows we may reach a point here the curves cross and the former replaces the latter.
If one wants to focus on a few figureheads, then do so on the monarchs and despots who need not concern themselves with popular sentiment, and who are pumping out cheap fossils fuel.
That would be the leaders of Saudi Arabia, Kuwait, Iran, Nigeria, Mexico and (once their wells are taken over by China & Russia) Venezuela. That's where the oil comes from, and crucially this is the low cost, price-setting oil. Were these producers to say "hey ya know what, we've already produced 2/3 of the oil ever used and we're concerned about the global C02 budget, so next years we're cutting production by 50%, and by half again the year after". The remaining oil has a far higher cost of production, and can't be drawn out fast enough to supply today's demand without massive investment, if at all. Whether by price or supply, oil demand would plummet.
Trump?? A distraction, and a minor one. He has very limited control over some barely break-even rapidly depleting oil (US shale). He can maybe nudge the needle a tad, but more than the slightest nudge which throws people out of work and his job goes next.
-
Eclectic at 20:09 PM on 28 November 2017Ice age predicted in the 70s
Typo correction : that should read "... look at the [2014] report mentioned in post #64 ..."
Only clairvoyants in 1914, could perceive a 1975 'Cooling World' Story !
-
Eclectic at 19:55 PM on 28 November 2017Greenland has only lost a tiny fraction of its ice mass
Bruce @4 , look at the evidence. Think for yourself — don't swallow the BS you seem to have gotten from some crazy science-free website. [Would it be WattsUpWithThat or JoNova or similar? Those are websites which cherry-pick tiny bits of data, without analysing them properly . . . and which love to put so much spin on the info, and carefully avoiding the context / bigger picture, to produce a grossly misleading impression on the casual reader.]
Greenland has gained a small bit of ice on the central heights — and has been losing over 50 cubic miles of ice (per year) from around the periphery. Rather as you'd expect, from all this AGW that's going on. And that melting loss of ice is part of the reason the sea level is rising so fast (and will get faster).
One cubic mile is a mighty big iceblock when you think about it, Bruce.
In comparison, the USA's Glacier National Park is pretty small beer. Sadly, the Park has lost most of the glaciers it had 150 years ago . . . and the few remaining, are horribly shrunken and disappearing fast. Get in and see them, Bruce, while there are still some left.
-
Eclectic at 19:27 PM on 28 November 2017Ice age predicted in the 70s
Just like Michael Sweet says.
Bruce @65 . . . . what, if any, is the point you are wishing to make?
Have you read any of the alleged 93 papers? It would be wise of you to read at least a small sample of those papers to see if they were really "concerned". Be wise of you, because Notrickzone is a notorious Fake News outlet, which spouts an amazingly-large amount of BS on all sorts of topics and seems to enjoy winding-up gullible & ignorant readers. (Presumably that's how they make their money at the website.)
That's not to say that it ain't (just) possible that the Notrickszoners might actually have published something truthful this time [gotta be a first time for them, sometime, right?] . . . but judging by their track record, they usually only prefer to to tell a truth is it's a half-truth which misleads or misdirects the gullible readers. So be on your guard, Bruce !! And do a bit of cross-checking.
Now, back to the Notrickszone message.
And the first question is : So what? Bruce, read the brief article above [by John Russell] and view the 5-minute video by David Bedford. And look at the [1914] report mentioned in post #64 just above your own post #65.
Look again at the reality, Bruce : the globe is warming rapidly; sea level is rising ever faster; the world's ice is melting rapidly decade by decade. (Not many glaciers left in Glacier National Park now, Bruce. Sad. ) And the world has just had its 4 hottest years on record ( 2014 / 2015 / 2016 / and 2017 is in the bag ! )
And it's gonna get hotter still — as said by virtually all the scientists who know what's what. There's no reason left to believe any of the BS coming from the science-deniers (or from Notrickszoners, either). Look around, Bruce — unlike in the 1970's , there are nowadays no credible scientists remaining, who think Global Warming ain't happening.
And all the climate scientists have got the evidence backing their opinion !!
So, Bruce, what do you think? (Forget the Notrickszone rubbish/spin.)
-
michael sweet at 19:16 PM on 28 November 2017Ice age predicted in the 70s
Bruce:
From the first reference at your link (Hanson et al 1981)
"Summary. The global temperature rose by 0.20C between the middle 1960's and 1980, yielding a warming of 0.4°C in the past century. This temperature increase is consistent with the calculated greenhouse effect due to measured increases of atmospheric carbon dioxide. Variations of volcanic aerosols and possibly solar luminosity appear to be primary causes of observed fluctuations about the mean trend of increasing temperature. It is shown that the anthropogenic carbon dioxide warming should emerge from the noise level of natural climate variability by the end of the century, and there is a high probability of warming in the 1980's. Potential effects on climate in the 21st century include the creation of drought-prone regions in North America and central Asia as part of a shifting of climatic zones, erosion of the West Antarctic ice sheet with a consequent worldwide rise in sea level, and opening of the fabled Northwest Passage." (my emphasis)
Hardly in support of global cooling. The second reference: Benton 1970 also predicts global warming with increasing carbon dioxide. After the first two I stopped checking.
When you cite papers that predict additional warming and say that they support claims of global cooling it is easy to get a lot of papers. Scientists read the citations and realize that the claims of predictions of global cooling rely on readers who do not check the citations.
-
bruce14421 at 17:03 PM on 28 November 2017Ice age predicted in the 70s
"The fact is that around 1970 there were 6 times as many scientists predicting a warming rather than a cooling planet"Following is a link to 93 papers concerned about an imminent ice age in the 1970's. http://notrickszone.com/#sthash.ydkdfTSH.dpbsCan the moderator either rebut these 93 or provide 6 times as many "warming" papers from the 1970's? -
bruce14421 at 16:49 PM on 28 November 2017Greenland has only lost a tiny fraction of its ice mass
For the last 18 months, DMI shows Greenland ice increasing significantly.
Arctic ice has plateaud and is now greater than it was in 2006.
If it was in a spiral of death, how is this possible?
Moderator Response:[Rob P] Arctic ice has declined dramatically since 2006. According to the DMI, the disintegration of Greenland ice sheet has contributed over 8mm of global sea level rise in that time. This is a science-based site so please stick to the facts/data or risk bogus claims being moderated out.
-
Eclectic at 08:37 AM on 28 November 2017An Inconvenient Sequel – the science, history, and politics of climate change
Bozzza @36 , my reference was not to arctic sea ice — which would not affect SLR, of course. Rather, to NH ice such as the Himalayas and Greenland. The latter case involves "warming air" gaining some of its heat from the nearby ocean, true.
-
nigelj at 08:14 AM on 28 November 2017American leaders should read their official climate science report
Chances of republicans reading this report seem on the low side.
There's an old saying you cannot argue with an idiot. This includes intelligent people determined to be idiotic, because of political motives.
-
John Hartz at 06:47 AM on 28 November 2017American leaders should read their official climate science report
badgering: Zero.
-
badgering at 06:10 AM on 28 November 2017American leaders should read their official climate science report
What are the chances of President Trump taking in this information? It may already be too late to prevent the worst effects of global warming.
-
bozzza at 21:28 PM on 27 November 2017An Inconvenient Sequel – the science, history, and politics of climate change
A regular doubling period is of course impossible to achieve.
It is of course what the stockholder demands...
Jevons paradox rules the world hence blood for oil wars!
Eclectic thinks warmer air will melt the arctic sea ice but my understanding was that the atmosphere was chiefly responsible for heat distribution at the equator but the ocean took over the dominant role toward the poles!
-
Eclectic at 19:04 PM on 27 November 2017An Inconvenient Sequel – the science, history, and politics of climate change
Sidd @34 , the real underlying point is that the next 100 years will likely show a sea level rise which is "above linear".
Warmer air will affect Northern Hemisphere ice and warmer seawater will affect Antarctic ice, in a complex way. All a matter of physical processes -— likely to have nett accelerations & slowings which won't fit well with basic algebraic formulae.
During the initial decades, SLR predictions will probably require frequent adjustments as observations & understanding continue to grow. Recent SLR has accelerated and we can expect even faster melting of ice sheets, since little has been done to counter the underlying cause of global warming.
For myself, I have never been able to empathize with the strange "reality-rejecting" mentality which views the very obvious global warming & higher sea level as being something which could be blamed on left-wing/right-wing political factions (including the "Gore" himself).
-
sidd at 16:02 PM on 27 November 2017An Inconvenient Sequel – the science, history, and politics of climate change
I realize i was asked to give a colloquial discussion of the difference between supralinear and exponential without resort to mathematical language, and i failed badly. So i post a link to a picture. The curves go from linear (invisible on this scale) through quadratic(x^2), cubic (x^3), quartic(X^4) and exponential. Observe how exponential outruns all in the long run.http://membrane.com/sidd/powercurves.png
In any event, to decree a process exponential requires data for several doublings of the rate in question. So when the rate of sea level rise over the last century of 2 mm/yr hit 4 mm/yr in 20 yrs and hypothetically 8 mm/yr in another 20 yr we have reason to believe the increase is exponential with the doubling time of twenty year. But as of now we have perhaps seen one doubling which can be fitted just as well with a quadratic as any other larger power or even an exponential. But quadratic is already troubling.
Waiting for it to become obviously exponential is ridiculous. When it hits 8 mm/yr we all screwed. So the evidence of a quadratic (y^2) term is already troubling.And long before we see a cubic term we need to be migrating away from coastline quick.
Is that better ?
sidd
-
One Planet Only Forever at 14:10 PM on 27 November 20172017 SkS Weekly Climate Change & Global Warming Digest #47
Glixon@4,
I agree that ending human activity that increases CO2 in the atmosphere is the top priority and must be achieved quickly.
The second point is that the current generation owes future generations no more than 350 ppm CO2 in the atmosphere. That means the current generation has to start removing carbon before it stops adding carbon, but never believe that because they are removing carbon it is acceptable for them to add more CO2.
That removal of CO2 will not be a 'money maker', and should not be a money maker unless a truly sustainable profitable activity is developed. Businesses/investors should not make a profit by being collectively paid by the collective of governments to reduce the CO2. And the businesses and investors making profit from the burning of fossil fuels should be paying the majority of the costs to remove CO2, again without the removers making any profit.
-
nigelj at 12:43 PM on 27 November 20172017 SkS Weekly Climate Change & Global Warming News Roundup #47
Talking about extreme weather, Australia is having record setting heatwave:
www.nzherald.co.nz/world/news/article.cfm?c_id=2&objectid=11948291
This article has some good graphics on urban areas and how hot surfaces can get. "The heat mitigation study uses a dedicated "energy bus" and drones to measure surface and air temperatures."
Also grim predictions for India, and humid climates like Darwin.
-
nigelj at 11:26 AM on 27 November 20172017 SkS Weekly Climate Change & Global Warming Digest #47
Carbon capture is very desirable to help combat the climate problem, but no one single carbon capture method is going to be sufficient alone. The calcium carbonate option ( and other similar approaches)should clearly be researched, but is expensive, energy intensive, complicated, blue sky technology and I agree it would be unwise to count on it. However it has the virtue of absorbing emissions fast, and doesn’t require much land area.
Forest sinks run out of enough land, and so will bccs solutions. Improved soil sinks are a very attractive natural proven option, but will be very slow to scale up, and carbon draw down can be slow.
But all options do have value especially in initial phases until they come towards various limiting factors. If you combine all of these in a planned way, it could well absorb emissions enough and be cost effective. Given countries have different geographies you can’t generalise on which is best option, but it would be possible to design a good combination of options for individual countries (like Jacobson has done with renewable energy).
But it’s hard for me to see governments agreeing a plan, especially when it involves a combination of methods. Democracy, lack of individual commitment, and varying human political ideologies were not designed for this sort of environmental crisis.
-
Glixon at 10:32 AM on 27 November 20172017 SkS Weekly Climate Change & Global Warming Digest #47
I agree with Dr. Kevin Anderson when it comes to any form of geo- engineering and carbin capture. To paraphrase, his viewpoint is that we should research carbon capture & storage, but we must not assume it will work at scale - which it has yet to do so so far - and it should not be included in any of the IPCC emission scenarios. Instead, as he points out, we should be putting our time, effort, money and energy into rapid and large-scale mitigation and decarbonization measures that will reduce - not stabilize, but actual reduction - of carbon emissions. Frankly, to pin our hopes on truly untested and pie-in-the-sky scenarios to save our "non-negotiable" and profligate way of life here in the west is not only sheer stupidity of the highest order, but, in my opinion, tantamount to genocidal crimes against all life on this planet, not just us.
-
sidd at 10:13 AM on 27 November 2017An Inconvenient Sequel – the science, history, and politics of climate change
Re: supralinear and exponential.Supralinear means a faster than linear increase, that the dependent variable y, (the rate of sea level rise ) is increasing as some power of t (time), like t^n where n is greater than 1. The graphs support this, and the first nonlinear term can be fitted as t^2. which gives a constant acceleration in the rate of sea level rise. This is not to be confused with the far faster exponential exp(t) where the acceleration of the rate of sea level rise is also exponential, in fact all derivatives are also exponential. The data do not allow one to say that the rate is exponential, but they do allow one to say that the rate is increasing. There is justification for a t^2 term but not higher powers, and certainly not an exponential.That said, paleo data show step like change, but we cannot yet say that we are seeing any more than a t^2 term from current data.
siddsidd
-
nigelj at 06:58 AM on 27 November 2017Analysis: WRI data suggests emissions have already ‘peaked’ in 49 countries
OPOF, yes business interests / organisations are unlikely to do much on own initiative to reduce airplane emissions. The fox is not going to guard the henhouse.
There's quite a good critique of the ICAO plan here. and it covers a wide range of aspects. Although at the end of the day reducing aircraft emissions is hard, and we may be stuck with some form of carbon offsets.
-
One Planet Only Forever at 06:40 AM on 27 November 20172017 SkS Weekly Climate Change & Global Warming Digest #47
Unfortunately, the past and current lack of leadership in Business and Politics to limit the negative future consequences of current day pursuits of Private Interests has resulted in economic Private Interests significantly compromising the Global Public Interest of developing lasting benefits for humanity.
The obligation of the current generation of humanity to stop allowing Private Interests to compromise the Public Interest is undeniable. Expecting 'Others' to deal with a problem that is being created by the Private Interests of a current generation of humanity in pursuit of enjoying a better present for themselves is undeniable unsustainable harmful activity. No Real Good Reason can be offered to support that type of attitude.
And the current generation, particularly the most fortunate among the current generation, have an obligation to do the most to undo the damage already done by developed human activity. And it is fairly well established that responsible respectable human action would rapidly reduce CO2 levels to 350 ppm (kudo's to the likes of Bill and Melinda Gates).
The above is presented as the basis for the following: Until a 'truly sustainable profitable economic system' develops to remove carbon from the atmosphere, the most effective methods for doing this must be paid for by government funded actions Not For Profit. A 'profitable' system to remove carbon may never develop. What possible economic use can be made of carbon extracted from the atmosphere where the extraction of the carbon is more cost-effective than other sustainable methods of obtaining that carbon?
-
nigelj at 06:34 AM on 27 November 20172017 SkS Weekly Climate Change & Global Warming Digest #47
The calcium process is near instant removal of emissions, but would clearly be energy intensive, and would have to use renewable energy otherwise you are just burning fossil fuels to then remove the same carbon. So it needs a lot of links in the chain to be properly in place.
The main thing bugging me is the article didn't give much idea of availablity of suitable geological formations to store all the carbon, dioxide, and whether these are in useful locations.
-
nigelj at 05:54 AM on 27 November 20172017 SkS Weekly Climate Change & Global Warming Digest #47
Regarding negative emissions technology, the economist.com has a good article here. This covers sucking CO2 from the atmosphere with chemical processes, beccs, enhanced soil sinks, and forestry sinks.
-
william5331 at 04:40 AM on 27 November 20172017 SkS Weekly Climate Change & Global Warming News Roundup #47
We should congratulate Trump for uniting the world against myopic American policies. They weren't much better before Trump but he has united us.
-
One Planet Only Forever at 03:19 AM on 27 November 2017Analysis: WRI data suggests emissions have already ‘peaked’ in 49 countries
nigelj,
An organization calling itself the GHG Management Institute has published an article about International Travel and Climate Change. The article explains why international air travel is excluded from a nation's GHG accounting. It explains that it was agreed that the International Civil Aviation Organization (ICAO) would be responsible for GHG abatement actions on international travel (International cargo GHG is also not accounted for by nations, and neither is the GHG emissions of a nation's military activity outside of their nation).
An interesting point is how difficult it has been for the ICAO to make meaningful progress. My suspicion is that they lack the authority to direct what will be done by aircraft manufacturer's because those are 'National and Business Organization Interests'. And they lack the authority to direct what will be done by International Carriers because they are also 'National and Business Organization Interests'. And as an association of Private Interest organizations, part of their mandate is maximizing the success of their members, protecting their Private Interests.
Asking the ICAO to impose profitability challenges on their members (the actions required to responsibly address the climate change challenge), appears to be similar to asking the International Energy Agency (IEA) to effectively manage the rapid termination of global burning of fossil fuels.
The real problem continues to be the power of inappropriately developed Private Interests to interfere with efforts to curtail understandably harmful and ultimately unsustainable activity. And the real problem related to that problem is the ability of powerful people to abuse the understanding of marketing message creation and delivery to improperly influence the education of the population.
Which leads to John Stuart Mill's warning in "On Liberty" that I share so often (because it keeps coming up as the best fundamental explanation of so many problems/challenges relating to developing lasting improvements for all of humanity).
“If society lets a considerable number of its members grow up mere children, incapable of being acted on by rational consideration of distant motives, society has itself to blame for the consequences.”
And a related quote that keeps coming up as the best explanation of what is going on is from the UN Commissioned Report "Our Common Future" published in 1987.
"25. Many present efforts to guard and maintain human progress, to meet human needs, and to realize human ambitions are simply unsustainable - in both the rich and poor nations. They draw too heavily, too quickly, on already overdrawn environmental resource accounts to be affordable far into the future without bankrupting those accounts. They may show profit on the balance sheets of our generation, but our children will inherit the losses. We borrow environmental capital from future generations with no intention or prospect of repaying. They may damn us for our spendthrift ways, but they can never collect on our debt to them. We act as we do because we can get away with it: future generations do not vote; they have no political or financial power; they cannot challenge our decisions.
26. But the results of the present profligacy are rapidly closing the options for future generations. Most of today's decision makers will be dead before the planet feels; the heavier effects of acid precipitation, global warming, ozone depletion, or widespread desertification and species loss. Most of the young voters of today will still be alive. In the Commission's hearings it was the young, those who have the most to lose, who were the harshest critics of the planet's present management."And those identified fundamental problems have led to the development of a Global set of Sustainable Development Goals that can be used to measure the worthiness of any leader of humanity (in Business and Politics). Those goals include climate action. And it is clear that all of the SDGs need to be achieved for humanity to have a decent future.
The missing link is the global ability to effectively limit the influence of undeserving Winners of Pursuit of Private Interest and keep other undeserving people from becoming temporary damaging Winners. And that missing link will not be easily developed as long as there remains a powerful belief/dogma that Good Results will develop if people, groups or nations are freer to believe and do whatever they can get away with that suits Their Interest.
Better education of the entire global population will be best developed when Private Interests that want to compromise the Global Public Interest have no significant influence on the leadership or education of any sub-set of the population. As long as sub-sets are freer to believe whatever they want and try to get away with doing what suits their Private Interest there will be damaging developments and conflict.
The continued development of climate science awareness and understanding has unintentionally, but very powerfully, exposed the unacceptability of what has been developed by competitions of Private Interests for popularity and profit, and the social and economic leadership changes that are needed for the Global Public Interest of humanity to have a lasting constantly improving future, not being compromised by Private Interests pursuing better personal presents at the expense of others.
-
XRAY1961 at 03:10 AM on 27 November 2017Humans are greening the planet, but the implications are complicated
Being rather visual in my interpretations, one thing I notice from the image above is that a lot of the greening appears to be in the sub polar regions. These are areas that for the most part have been either tundra or ice covered.
We are already observing changes in these areas due to warming. In addition, there has been concern voiced about increased emmissions of GHG's as these areas melt. Finally, there are the obvious albedo changes. As the title mentions, it's "complicated".
-
Paul D at 21:00 PM on 26 November 2017New rebuttal to the myth 'climate scientists are in it for the money' courtesy of Katharine Hayhoe
Accusing someone of doing something purely for the money reveals more about the person saying it than it does of the person it is aimed at.
I get paid for the work I do, but I stay with the job because the work I do ticks all the boxes regarding my interests and skills. I work for a large commercial engineering and services company.
I don't own property and I use public transport.
If I wanted more money I wouldn't stay where I am.
-
Lloyd Flack at 16:37 PM on 26 November 2017New rebuttal to the myth 'climate scientists are in it for the money' courtesy of Katharine Hayhoe
My salary gets paid out of research grants. I know what researchers do to try to stretch out a grant. The suggestion that anyone is getting rich off them is plain silly. I am working in public health rather than climate but I see no reason at all to believe that how grants are spent is any different.
-
nigelj at 08:18 AM on 26 November 2017Analysis: WRI data suggests emissions have already ‘peaked’ in 49 countries
Peter Wilde@16
The impression of how many countries have reached emissions peak might indeed be over optimistic in some cases, but not all cases, or that widely. In Russia it was driven by politics of the breakup of the Soviet Union and later economic recessions, and with no real sign of a genuine commitment to reduce emissions.
However offshoring of manufacturing in Britain to China is only part of the reason for emissions reductions. It's well known Britain have a well developed renewable electricity sector which would be a big contributor to lower emissions.
Surely emissions from planes are accounted for in country of origin? I dont see why it would be ambiguous or otherwise.
China's share of manufacturing has increased over the last 30 years, but this process is nearing saturation according to the economist.com. China has some manufacturing migrating back to America and very low cost centres like Vietnam and Bangaldesh. This is because of wage rises in China. Theres's also a government push to expand the services sector rather than just manufacturing. Manufacturing debt servicing is also right at the upper limits. Chinas building boom of high rise apartments is also nearing saturation level, so its use of cement may decrease to some extent. So if you consider all that, it is feasible that China can reduce emissions.
-
nigelj at 06:37 AM on 26 November 2017What do Jellyfish teach us about climate change?
Aleks, Michael Sweet, this published research appears to be what is very relevant.
"Impact of anthropogenic atmospheric nitrogen and sulfur deposition on ocean acidification and the inorganic carbon system"
Scott C. Doney,*† Natalie Mahowald,‡ Ivan Lima,* Richard A. Feely,§ Fred T. Mackenzie,¶ Jean-Francois Lamarque,‖ and Phil J. Rasch‡
Proc Natl Acad Sci U S A. 2007 Sep 11; 104(37): 14580–14585.
Published online 2007 Sep 5. doi: 10.1073/pnas.0702218104
PMCID: PMC1965482
Environmental Sciences, Sustainability Science, Environmental Scienceswww.ncbi.nlm.nih.gov/pmc/articles/PMC1965482/
Summary:
On a global scale, the alterations in surface water chemistry from anthropogenic nitrogen and sulfur deposition are only a few percent of the ocean acidification and Δ[DIC] increases expected from the oceanic uptake of anthropogenic CO2. However, impacts on seawater chemistry can be much more substantial in coastal waters, on the order of 10–50% or more of the anthropogenic CO2-driven changes near the major source regions and in marginal seas.
-
Peter Wilde at 05:16 AM on 26 November 2017Analysis: WRI data suggests emissions have already ‘peaked’ in 49 countries
Looking at the dates when national emissions peak, as in this article, could give an over-optimistic impression of how far and fast the world is advancing in tackling climate change.
Surely it's also necessary to consider the reasons why certain countries' emissions have peaked relatively early. For a number of developed countries like the UK, the relatively early peak to some extent reflects a decline in home-grown manufacturing industry; replaced by a greater reliance on imports of manufactured goods from countries like China.
The rise of the globalised economy and goods being transported for long distances also raises other questions. Where are emissions from planes and ships being accounted for when considering whether or not a particular country's emissions have peaked? And what about emissions connected to rapidly increasing internet activity, for maintaining server farms, and call centres, etc?
A few major players like China and India are responsible for an increasing share of global manufacturing (and arguably too of data processing and the internet-based service economy). How much reliance can be placed on their good intentions to reduce emissions by xx date - while simultaneously increasing their share of global business activity - ?
-
nigelj at 05:13 AM on 26 November 2017Analysis: WRI data suggests emissions have already ‘peaked’ in 49 countries
Voting systems are actually extremely relevant to the climate issue. FPP makes it very challenging for small parties, like Green Parties and other environemtally driven parties to become part of any government. Proportional representation is more inclusive of Green parties, and wider minority parties generally. I have seen this in my country first hand where small parties have been in government, or had confidence and supply agreements. Just the possibility they could be in government might influence policy of other parties.
The problem with MMP is it can give minority parties a disproportionate influence, where the tail wags the dog. This can lead to instability. STV (single transferable vote) proportional representation overcomes this problem and may be the best system overall.
Approx 80 countries have some form of proportional representation as below. Many have proportional party list.
en.wikipedia.org/wiki/Proportional_representation
I dont think you can lightly dismiss the decision of 80 countries, especially wealthy european countries, some with good climate policies. FPP might have the virtue of it being easier and more clear cut in forming a government, but the results in terms of quality of government often aren't compelling.
-
michael sweet at 04:41 AM on 26 November 2017What do Jellyfish teach us about climate change?
Aleks:
The solubility of CO2 in water dependant on both the temperature and the pressure of the CO2. According to the engineering toolbox, at 15C and 1 atm pressure, approximately 2 gm of CO2 dissolve per kg of water. Your figure of 1.5 g/kg is probably from 25C.
You make two basic mistakes with using this temperature:
- The average temperature of the ocean is closer to 15C and not 25C.
- The pressure of CO2 above the ocean is not 1 atm, it is 4x10-4 atm.
Since you do not know how to figure out the solubility of CO2 from a graph, why should I believe your claim that:
" Calculation from the data in the right column of the table leads to a much larger difference.
It seems that these data do not confirm the theory of determining role of atmospheric CO2 in the change of ocean acidity."You have made so many basic calculation errors that your calculations canot be trusted.
Scientists have found that the tabulated data is completely consistant with theory that CO2 determines the pH of the ocean. Keep in mind that other buffers exist in the ocean (especially boric acid) and you must consider these when you calcuate the pH change caused by adding more CO2.
-
michael sweet at 04:15 AM on 26 November 2017Analysis: WRI data suggests emissions have already ‘peaked’ in 49 countries
Norrism:
Your comment was deleted for being off topic on this thread (I am not a moderator).
I suggest you repost your question on the Weekly news roundup where it will be more on topic. I imagine that John Hartz did not see the post in the Economist, it is difficult to read everything.
Moderator Response:[JH] See my Moderator's comment on NorrisM's post.]
-
NorrisM at 03:21 AM on 26 November 2017Analysis: WRI data suggests emissions have already ‘peaked’ in 49 countries
Moderator
As Eclectic has noted, my question relating to the recent lead article in the November 18, 2017 of the Economist has been "disappeared" but without any explanation for why this was done. I thought perhaps it should be posted on the "Models are Unreliable" thread but it did seem relevant to this thread as well in that the levelling of emissions is not enough according to the Economist. We have to pull massive amounts of carbon out of the air to meet most of the model's projections.
Moderator Response:[JH] Another Moderator deleted your comment because it was "off topic."
Andy Skuce produced a three-part series on the issues of your concen in the Fall/Winter of 2015.
The Road to Two Degrees, Part One: Feasible Emissions Pathways
The Road to Two Degrees, Part Two: Are the experts being candid about our chances?
The Road to Two Degrees, Part Three: Equity, inertia and fairly sharing the remaining carbon budget
Please read this set of articles and post your comment on one of them.
For more recents article on this topic, see:
Who will deliver the negative emissions needed to avoid 2C warming?, Guest Post by Glen Peters & Oliver Geden, Carbon Brief, Oct 30, 2017
Can Carbon-Dioxide Removal Save the World? by Elizabeth Kolbert, Annals of Science, The New Yorker, Nov 20, 2017 Print Edition
Prev 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 Next
