Climate Science Glossary

Term Lookup

Enter a term in the search box to find its definition.

Settings

Use the controls in the far right panel to increase or decrease the number of terms automatically displayed (or to completely turn that feature off).

Term Lookup

Settings

All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

Home Arguments Software Resources Comments The Consensus Project Translations About Support

Bluesky Facebook LinkedIn Mastodon MeWe

Twitter YouTube RSS Posts RSS Comments Email Subscribe


Climate's changed before
It's the sun
It's not bad
There is no consensus
It's cooling
Models are unreliable
Temp record is unreliable
Animals and plants can adapt
It hasn't warmed since 1998
Antarctica is gaining ice
View All Arguments...



Username
Password
New? Register here
Forgot your password?

Latest Posts

Archives

Recent Comments

Prev  807  808  809  810  811  812  813  814  815  816  817  818  819  820  821  822  Next

Comments 40701 to 40750:

  1. Will extreme weather like super typhoon Haiyan become the new norm?

    Tom Curtis @10, to add to your excellent response to Yubedude @9, emotions are necessary to change most minds. Rev. Martin Luther King, Jr., had to write that letter from a Birmingham jail cell to get wider support for the civil rights movement. If anything, the scientific community has not been emotional enough in conveying the gist of the message, viz., complex life on earth is in jeopardy if we continue twiddling our thumbs.

  2. Will extreme weather like super typhoon Haiyan become the new norm?

    michael sweet @ 14

    It is obvious that many extreme storms are caused by AGW, even though there is not statistical confidence in the data.

    How is it obvious if there is no confidence in the data.  That is counter-intuitive.

    The nature of expreme events is such that scientific confidence will trail the real world experience.

    How can that be?  Unless you are talking about the very first occurance of something.  If there had never been a hurricane in Florida, and now there was, your statement could be true, but what you had been discussing does not lead to this conclusion.

    Most people in the US now realize that tornadoes in Illonois in November and Hurricanes in New York in October are not normal.

    This is simply not true.  Where did you get this info from?  Did you make it up?  Tornados have happened in Ill previously, even in November.  While not a common occurrance, it is by no means not normal.  The hurricane season, as most described, is from June through November.  This obviously includes October.

  3. Klaus Flemløse at 21:19 PM on 21 November 2013
    Will extreme weather like super typhoon Haiyan become the new norm?

    post nr 1 and nr 13:

    Thanks to Tom Curtis. Now it is working

  4. Will extreme weather like super typhoon Haiyan become the new norm?

    An additional reason that the third world has had bigger hits from extreme weather is that it occupies more of the globe.  A gigantic hurricane like Hayian is much more likely to strike a third world country because there are few developed countries in the hurricane zone.  A few years ago a denier in my Florida chemistry class told me that concerns about increases in hurricanes were misplaced because Florida had not been hit recently.  Two category 5 hurricanes had hit central America that year. He said that if his house was not affected it did not matter!  Sandy showed what happens to a developed country when an extreme storm hits.  If Miami or Tampa (where I live) got hit with the storm surge that Haiyan had there would be many deaths.  Do you feel lucky today?

    It is obvious that many extreme storms are caused by AGW, even though there is not statistical confidence in the data.  The nature of expreme events is such that scientific confidence will trail the real world experience.  Most people in the US now realize that tornadoes in Illonois in November and Hurricanes in New York in October are not normal.  Hopefully people will vote for action sooner than later.  Five years ago there were many skeptics in my class.  Today few students are openly skeptical of AGW.

  5. Will extreme weather like super typhoon Haiyan become the new norm?

    Klaus Flemlose @12, the Skeptical Science comments panel is now WYSIWG (What You See Is What You Get).  When editing, stay in the basic tab and just type what you want.  You can bold, italic, underline, strike through, subscript, and supercript from that tab by highlighting the relevant text and pressing the relevant button.  You can also make ordered and unordered lists, and indents.

    If you need to insert links, tables or figures go to the second tab, and use the appropriate buttons.  When inserting a picture, ensure you go to the appearance tab and set the width to 500 pixels or less.

    Finally, if all else fails, you can use the source tab to edit using html code.

    Entering html code anywhere other than in the source tab will simply result in it being displayed as characters on the screen.  If the html code is not broken, however, if a moderator clicks edit on your post and then updates, the html code will normally run.

  6. Klaus Flemløse at 20:31 PM on 21 November 2013
    Will extreme weather like super typhoon Haiyan become the new norm?

    In post nr 1, I have tried to include pictures and links using the syntax prescribed. Nothing works.

    I could earlier use the html  bottom, but i does not work any more.

    Please help me.

  7. Will extreme weather like super typhoon Haiyan become the new norm?

    Tom@10,

    Thank you for your analysis and your links to brisbanewaters blog where you provide comprehensive numbers to refute the game of blaming the victim. I just realised that similar game has been playing by one of my fiends (denier of AGW) in relation to the unprecedented NSW fires in October. To my argument that BOM & CSIRO assert  the increasing Australian weather extremes will be responsible for more frequent bushfires, and this bushfire, occuring so unusually early in the season, is the evidence supporting their assertion, he replied:

    There were always bushfires in Australia. And CAGW has nothing to do with it. If this fire was unusual, or if we've seen more fires recently, that's because there are more people living in Blue Mountains now, and more people means more arsenists. More fires are the acts of arson, the latest one included.

    I didn't know what to answer to such argumentation because I didn't have detailed arson statistics at hand and didn't consider the ethical aspect of that talk. Now I see how corrupt such argumentation is. And it's astonishing that it can be applied not only to an exotic country like Philipines, but also to your own country, even your own neighbours (!) And it's often not easy to refute on empirical basis only, like you did in case of Brisbane floods.

    I don't see the "Blame the victim" in the list of Climate Myths under the thermometer on the left margin. I think the issue is impotant enough to get our attention: that myth is particularly nasty to warrant a comprehensive rebuttal.

  8. Global Warming Paws Fails to Materialise: Earth Still Warming and Global Sea Level Rising Like Gangbusters

    "but isn't there a price to pay for all that energy being absorbed into deeper and cooler parts of the ocean, particularly in polar regions?"  Agnostic at 10:41 AM on 20 November, 2013

    I suggest that it threatens the thermohaline circulation.  Would someone speak about the probable effects of a shutdown?

  9. Will extreme weather like super typhoon Haiyan become the new norm?

    YubeDude @9 indeed, any "half intelligent denialist" will always wander aggressively off topic.  Wether the disaster is a heat wave in Russia, floods in Pakistan or typhoons in the Phillipines, they will play the age old game of blaming the victims.  The interesting thing here is that the game of blaming the victims is even played when the disaster strikes a wealthy western nation with little corruption, such as the Brisbane floods of 2011.  Never mind that they need to get their facts almost completely wrong to do so.  Blaming the victim exonerates the person laying blame, and allows them to feel superior.

    In your case, the fact that the game is played even against an Australian capital city, should it be so unfortunate as to suffer a disaster shows that there is no ideal country whose disasters can be held up as an example that, yes, more extreme weather results in more victims of natural disaster.  (The possible exception is disasters in the US, which seem never to be the fault of the victim.)  Pointing to the poverty, and the corruption in the Phillipines is just a smoke screen.  The victim blaming would have occurred anyway.

    What is more, they are mere whisps of a smoke screen.  The Phillipines is not unusually corrupt (ranking similarly to the BRIC group of nations, the power houses of economic growth in the third world).  So while corruption in the Phillipines may contribute to poverty, it is not the major factor.  By far the largest factors are a lack of significant resources in high demand (such as oil), combined with a super-abundance of low wage workers in other nations such that they are a poor choice for sweated factory labour.  Even without corruption, even with a strong spirit of enterprise (which by all accounts the Phillipinos have), their nation would still be poor.   And because poor unable to build to cyclone resistant standards for the majority of their accomadation.  "Corruption" serves in this context only to provide an excuse for not thinking about the real implications.

    Those implications are simply that adaption does not work.  At least, we are currently unable to adapt to even normal levels of storms except in the most wealthy of nations (and not even always then), so the notion that we can face a world made far worse by global warming and simply adapt to it is laughable.  It relies on the fact that death is also a form of adaption, and that deaths in the third world do not weigh significantly on the scales in western policy.  (In fact, in Bjorn Lomberg's favourite economic model, it is a "feature" that third world deaths and injury are considered a lower cost than first world deaths and injury.)

    So, the response of your putative "half intelligent denialist" amounts to simple moral bankruptcy.  It simply treats the suffering of the very poor in the face of disasters as of little moral consequence - and hides the calousness of that fact behind ideological blinders. 

  10. Will extreme weather like super typhoon Haiyan become the new norm?

    I don't wish to offend or come across as callous to the suffering that has occurred...now having said that...

    Using this video as some kind of humanistic plea for change does nothing to address the issue at hand and actually creates an opening for denialist to take advantage of. The Philippines is not the place to try and link human tragedy and AGW impacts as a way of addressing the need for change. Any half intelligent denialist is going to aggressively wonder off topic and easy show that the amount of the death and destruction was the result of conditions that exist in the Philippines as opposed to the absolute force of the storm. A comparable death count between the next largest storm, Hurricane Camille, and this most recent storm illustrates that death counts and overall destruction have to factor the inherent conditions that exist.
    You can bet the cost will be lower in the Philippines but the death count much higher. Addressing the measured storm surge and speaking of the loss of life does not factor in that a very large population of people have to live in the surge zone due to poverty and are unlikely to have received timely information suggesting evacuation or refuse to evacuate because where exactly would they go?
    Any natural disaster is tragic where there is a loss of life or suffering. But adding that human element in an attempt to pull at the heart strings is disingenuous when the speaker/negotiator knows that his government and the culture of corruption are standing in the way of real change or doing anything significant to lessen the impact felt by these kinds of natural disasters.

    I say stick to the science and leave the tears for the TV dramas and bakla emotional meltdowns.

  11. Will extreme weather like super typhoon Haiyan become the new norm?

    Just to bring a bit of visual and audible to the discussion:

    http://www.youtube.com/watch?v=hcfdFggVnPE&list=UUVLkqTvsRpm46RDmM4SYf6Q

    Moderator Response:

    [RH] in the future please include a more descriptive comment with your links.

  12. Will extreme weather like super typhoon Haiyan become the new norm?

    Extending Terranova's thoughts, there's a world of difference between a house with no water on the floor and another with only 1cm underfoot. 

    Some of us have experienced the difference up close and personally. Rest assured, there's only a fraction of a meter of water between a house being useful and useless.

    Anywhere there's a storm surge,  SLR is playing a role. If it's outdoors, no big deal. Indoors, the story is entirely otherwise.

  13. Will extreme weather like super typhoon Haiyan become the new norm?

    Terranova @3,

    In addition to the excellwent figure provided by scaddemp @5, see also the following image from the IPCC's fifth assessment report.  Note that the tide gauge at Manilla has recorded an increase in sea level of about 0.75 metres since the 1960s (H/T to Eli Rabett)!  Note, not all of that is related to global warming, some of the increase in sea-level in the western Pacific is related to decadal-scale variability.  Regardless, now add that to a 3-4 m storm surge (as far as I know, no official number has been released yet, but given the intensity of the storm, the observed damage and what storm surge models were predicting, the 3-4 m value is entirely plausible; see video to witness the devastating force of the storm surge) and you have a really big problem made even worse.

  14. Will extreme weather like super typhoon Haiyan become the new norm?

    Philippines sealevel rise is much higher than world average at around 12mm/yr.

    Are you suggesting that it is physically possible for SLR not to add to storm surge height? That would seem to violate a no. of physical laws.

    Moderator Response:

    [RH] Fixed image width.

  15. Will extreme weather like super typhoon Haiyan become the new norm?

    When people talk about Camille in 1969 I point out that Haiyan was massive. It was likely about 3X the size of Camille. 

    Wind speed records are somewhat misleading and don't account for the amount of energy contained in cyclones.

  16. Will extreme weather like super typhoon Haiyan become the new norm?

    Dana, 

    One topic at a time.   What is the recorded SLR in that region of the world? And,  more importantly what was the official storm surge?  Can you quantitatively demonstrate that SLR had any appreciable impact on the storm surge? 

    Statements and predictions are easy.   Scientifically proving those statements is not. As one multi-degreed and practicing environmental scientist to another,  I am challenging you to show valid proof of your statements. 

    Moderator Response:

    [JH] Please lose the snark.

  17. Will extreme weather like super typhoon Haiyan become the new norm?

    Klause Flemlose @1, the statistics in the chart are simply for the thirteenth strongest tropical cyclones at landfall.  That does not include, fairly obviously, all landfalling tropical cyclones and hence the trend in the sample does not show the trend in speeds at landfall of tropical cyclones.  Nor is a sample of thirteen large enough to draw any significant conclusions from.  Further, the trend you show is probably almost entirely an artifact of the increased frequency of observation of tropical cyclones in the satellite era.

    That cuts both ways, of course.  The chart does not provide enough information for the downward trend to be significant, but neither does it show enough information to suspect an upward trend if more data was included.  In particular, the higher frequency of tropical cyclones with a one minute wind gust velocity greater than 164 mph in recent decades is almost certainly a result of better tracking of cyclones with satellites.

    Further, a significant confounding factor in the period of satellite observation is the switch from predominantly El Nino conditions from the late 1970s to the mid 2000s, to predominantly La Nina conditions.  La Nina conditions reinforce the Western Pacific Warm Pool, increasing SST around the Phillipines and Australia, a factor in 5 of the 6 cyclones listed since 1998.  (It may also be a factor the sixth, striking the caribean coast of Mexico, but I am unsure of the ENSO influence in the caribean).

    That confounding factor does not, however, detract from the point of the OP.  If increased SST increases the frequency of category 5 tropical cyclones, it will do so wether that increase is due to ENSO or global warming.  

  18. Klaus Flemløse at 07:06 AM on 21 November 2013
    Will extreme weather like super typhoon Haiyan become the new norm?
    Will extreme weather like super typhoon Haiyan become the new norm?

    For other reason that presented here, I think the statement is correct.

    The statistics copied from Earth’s Strongest Landfall Tropical Cyclones at landfall does not indicate at all that the wind speed is increasing.

    There too little information in the graph to show anything. The data is sorted by mph creating a picture of an increasing trend.

    Below the data is plotted by year and the histogram is shown:

     

     

    The number of records broken over the years 1935 to 2013 is 4.This is not extreme in any ways.

    This following graph shows 10000 simulated runs of 79 years of observations assuming that no development in wind speed has taken place.

    The probability for 4 broken records or more is 0.5768. 

    Moderator Response:

    [RH] Deleted empty lines.

  19. Global Warming Paws Fails to Materialise: Earth Still Warming and Global Sea Level Rising Like Gangbusters

    Agnostic:

    ... but isn't there a price to pay for all that energy being absorbed into deeper and cooler parts of the ocean

    Well, among other effects, there's thermosteric sea level rise:

    http://onlinelibrary.wiley.com/doi/10.1029/2012GL051106/full

  20. Global Warming Paws Fails to Materialise: Earth Still Warming and Global Sea Level Rising Like Gangbusters

    Mods, we could use a mouseover def for "GIS."  I gathered it means Greenland Ice Sheet because there is one above for West Antarctic Ice Sheet right next to it.  

    chriskoz: "our selfish hope is that ocean will absorb most of CO2 peak quickly enough (some 100y) before GIS and WAIS start collapsing"

    But is that a "selfish" hope or a naive one?  If marine ecosystems collapse, won't that affect humans too in very nasty ways?  Aside from the obvious loss of a major food source (which would presumably lead to even more livestock consumption with its gluttonous emissions tally => anthropogenic amplifying feedback?), I think I've also read about loss of natural harbors and increased coastal erosion, and who knows what other impacts we may not have even thought of?  

    Moderator Response:

    [AS] GIS Glossary term added.

  21. Help make our coverage bias paper free and open-access

    Still in progress...

  22. 2013 SkS Weekly News Roundup #47A

    “On Thin Ice” at Warsaw climate talks

    Did you know it was the “Day of the Cryosphere” at the Warsaw climate talks COP 19 in Warsaw yesterday? If not, you might be forgiven. I haven’t seen it making the headlines in the mainstream media. That is a pity, given that what climate change is doing to our ice, snow and permafrost has repercussions for the whole planet.

    The cryosphere is a term for the regions of our globe which are covered in ice and snow either seasonally or all year round, from the North Pole to Antarctica. ”Climate change is happening in the cryosphere faster and more dramatically than anywhere else on earth”, says the “International Cryosphere Climate Initiative” (ICCI). It is a network of senior policy experts and researchers working with governments and organisations to bring about initiatives to preserve as much of our ice and snow areas as possible. The group was set up in 2009 immediately after the disastrous COP 15 in Copenhagen.

    “On Thin Ice” at Warsaw climate talks by Irene Quaile, DW (Deutsche Welle) Ice Blog, Nov 18, 2013


    Moderator Response:

    [JH] Thanks for posting this. I will include it in the next edition of the News Roundup as well.

  23. Global Warming Paws Fails to Materialise: Earth Still Warming and Global Sea Level Rising Like Gangbusters

    This video emphasizes the role of oceans in AGW, and rightly so, because we, land creatures tend to ignore it.

    Once you learn a little bit about climate science (like myself) it turns out the more you learn the more you realise the importance of the state of the oceans as the main measure of AGW and the related catastrophe:

    - oceans absorb 93% of heat from increased GHE

    - oceans are rising as they expand & melting ice adds there

    - arctic ocean dramatically alters in albedo as sea ice melts with extra positive effect (heat from ocean speeds it up more than air temperature)

    - sooner or later, oceans will absorb most of Antropo CO2 pulse (within 100ky timescale)

    - oceans are getting acidic, and it's far too dangerous for CaCO3 forming creatures than the climate change is for us (if kept at 2degrees)

    - our selfish hope is that ocean will absorb most of CO2 peak quickly enough (some 100y) before GIS and WAIS start collapsing... great hope, but what does it mean for coral reefs, foraminifera, crustaceans, and others in the food chain?... ceartain death!

    I think we should repeat those scientific facts over and over until ignorant/denying public understands the extents of the main problem here. That wasting time talking about "pause" in air temperatures does not make sense.

     

  24. Broad consensus on climate change across American states

    Further to scaddenp's remarks, unfortunately the Supreme Court here has officially declared that we have as much free speech as money can buy.  By so doing they instantly enshrined a new class of super-citizens as it follows logically that if you have more money you have more free speech, but that's the going word at present. Perhaps later with a different bench and an argument that can once again reach the Supreme Court we can dethrone  our super-citizens.

    Of course this same composition of the court that created super-citizens also cannot parse a sentence with multiple clauses, thereby apparently being forced to choose a favorite part, so odds are we'll do better in the future. It hardly seems possible to underperform in comparison. Maybe. This is the also the country that is replacing letters and numbers on cash registers with pictures of things being sold. 

  25. 2013 SkS Weekly Digest #45

    In many ways, WRT climate science reality, I *wish* there was an *Unsee* button. Having the knowledge of even the most conservative takes on what is to come is dpressing beyond words. All I, or anyone else can do, is to keep trying, like Chief in "One Flew Over The Cuckoo's Nest," and hope the drinking fountain of raelity will flatten the Wall of Stupid that is climate science denial/disinformation.

  26. Global warming since 1997 more than twice as fast as previously estimated, new study shows

    Sorry, Poster, but using Curry as an exhibit to cast doubts on Cowtan and Way is still using the scientific illiterati. She has no cogent response to their work, has used nothing that can even come close to being called a rigorous look at their paper, and is just doing her usual heming and hawing, and using the old tactic she's perfected, of parroting something about "uncertainty." Will Cowtan and Way stand the test of time? I don't know, for I am not an expert, but, having read in excess of 1200 various articles, essays, and papers concerning this subject, one thing I can say, with good reliability, is Curry hasn't done anything except her usual non-rigorous trashing of a paper I sincerely doubt she understands.

  27. Global Warming Paws Fails to Materialise: Earth Still Warming and Global Sea Level Rising Like Gangbusters

    Just as well the oceans are such a large heat sink ... but isn't there a price to pay for all that energy being absorbed into deeper and cooler parts of the ocean, particularly in polar regions?

  28. Antarctica is gaining ice

    Morgan Wright @204 (cont), I have been a bit confused about my account of the effect, specifically with regard to the location and altitude of the relevant winds.  In particular, I thought the relevant winds were those bringing warmth into the upper troposphere of Antarctica, whereas they are those related to bringing warmth to the Antarctic Ocean.  To avoid furhter confusion, I think it best that I lay out the observations directly.

    First, the winds involved are those bringing warmth along the surface from about 30o to about 60o South:

     

    These result in westerly winds (clockwise around the pole as viewed from below) just above the edge of Antarctica in the region where the seasonal sea ice forms, ie, the west wind drift:

    These have been strenthening, and it is their increased speed that is one of the postulated causes of increased Antarctic sea ice.

    Gillet and Thompson (2003) show a comparison between the observed increase in westerly strength and that prediced from a model driven only be reductions in ozone set to match observed reductions:

     

    Gillet and Thompson indicate the strongest effect occurs in the spring in the stratosphere, but then propogates downward to summer (summer and autumn according to Turner et al, 2009).

    How could ozone drive this pattern?

    The west wind drift is formed by air coming south and then rising as it encounters colder air from Antarctica.  For it to rise, air above it must disperse, ie, move either north or south.  If it does not disperse, the rising air will cause a build up in pressure that will stop further rises in air.  The air moving south in turn must fall at or near the south pole in order to make room for more air.  That, however, creates a problem.  The air moving south is typically of a similar temperature to the surface in Antarctica, or warmer.  If it falls, it will be warmed by increase pressure, making it warmer than the surface air.  As a result it will not fall any further.  Unless upper troposphere are over Antarctica falls to temperatures approximately 6.5o C per km of altitude above the surface, it cannot fall, with the consequence that pressure will build up at altitude stopping further circulation.  Therefore the air coming south must be cooled, primarilly by radiation to space.  The radiation to space is made less efficient by the existence of a warm stratosphere above the air, generating IR radiation from above, and limiting the net cooling of the upper troposphere.  At this stage, reduced ozone results in a cooler stratosphere and more efficient cooling of air in the upper troposphere.  Reduced ozone, of course, cools the stratosphere by the simple expedient of reduced absorption of UV radiation from the sun.

    It should be evident that increase CO2 should also result in more efficient cooling of the upper troposphere.  When the air below this effect is overwhelmed by increased IR radiation from below.  But over Antarctica, increased CO2 should also accelerate the  circulation of the polar cell, and hence indirectly that of the mid-latitude cell, and with it the west wind drift.  Models do in fact show this effect, but show it to be significantly weaker than the effect of reduced ozone.

  29. Broad consensus on climate change across American states

    Something like the NZ Electoral Finance Act?

    I think Americans strongly believe that the rights of very rich people to have undue influence on politics is a fundamental freedom, and this "freedom" trumps any other rights that might be conflicted.

    In short, good luck. As an outsider looking in and having discussed this with many US citizens, it appears vested interests have very successfully pushed rhetoric about "freedom" to point where no reasonable discussion is possible. I'm glad I live here instead.

  30. Ljungqvist broke the hockey stick

    Morgan Wright @33, taking your lower graph, you show peaks that differ in timing by around 500 years in one case, and by about three thousand years in two other cases as evidence that NH and SH temperatures vary in sync.  Oddly, I am not convinced.  In fact, the "syncrhonization" of Arctic and Antarctic warm events is such that scientists have proposed a "bi-polar seesaw" to account for the fact that, in general, while the Arctic cools, the Antarctic warms.  Equally important, the temperture differences between found at Greenland and those in Antarctica are significantly different in scale, and cannot by rendered similar by a simple linear rescaling.  Your charts, therefore, merely establish that you cannot use a single local proxy as a global proxy (or a hemispheric proxy).

    Single site polar proxys are only usefull as global proxies for indicating the onset or end of interglacials.  Even then, they are only approximate indicators for the rest of the global, as Shakun et al have shown:

    Morgan, everybody does foolish things, especially in areas where they are largely ignorant (as you evidently are in this).  What distinguishes the wise the fools are that the fools persist in their mistakes in the face of contrary data.  The evidence clearly shows that global and hemispheric temperature variations can differ substantially from that of local proxies, and that single local proxies are, therefore, very poor indicators of global patterns except for the very largest patterns (ie, transitions from glacial to interglacial and others of similar magnitude).  

  31. Antarctica is gaining ice

    Morgan Wright@206: "Now, let's iron this whole thing out. South pole, not warming"

    While I realize that this is not peer reviewed, or even strictly speaking a scientific result, it might bear some counter value to the claim above:

    "The 2013 winter – the months of June, July and August – will already go down as the warmest such season at the South Pole since records began in 1957. That trend continued into September – now the warmest on record – with four new daily maximum record temperatures falling in the middle of the month."

    And while MW does refer to a NASA-produced anomality-picture from 2005 (apparently), there are newer ones, which are showing that the anomality is positive.

    So, old information says cooling. New information says warming.

  32. Broad consensus on climate change across American states

    Politicians serve the people that give them funds to run their campaigns, not the people that elect them.  The only way America will get out of this paradigm is to ban all election contributions and legislate equal, tax payer funded air time for each politician to present his case.  Besides air time, each politician gets a set amount of funding from the government.  It sounds expensive.  It is far less expensive that the present completely democracy corrupting system.

  33. Broad consensus on climate change across American states

    kanspaugh @3. While not denying the power of lobbying groups, the analogy between the NRA and fossil fuel industry doesn't play well. The former claim second amendment rights in support of the right to bear arms, and short of being in the firing line, Joe Public isn't affected by the NRA's love of weapons. Not so with climate change; Joe Public most certainly will be affected. And while a good majority of them may believe that climate change is real, I suspect very few really have any idea of the catastrophe that awaits, if not them, then their children and grandchildren.

    With at least one notable exception, climate scientists have been very conservative in aggressively telling the public about what the future may – no, WILL – bring without adequate reductions in CO2 emissions. I suspect most of the public think in terms of perhaps a few more storms in the mid-west, maybe some water shortages in the south west, and maybe some more events like Sandy (but the insurance companies will pay, won’t they?). Do they really know the likelihood of extended drought in the mid-west and south west, decimating livestock production, and making the south west uninhabitable due to lack of fresh water (‘A 12000 year perspective of 21st century drought in southwestern North America’, Woodhouse et. al, PNAS 2009)? Do they understand that there is nothing they can do to save east coast cities from rising sea levels (‘Rapid accumulation for committed sea level rise from global warming’, Strauss, PNAS, 2013)? Do they understand that rising summer temperatures will result in significant decline in production of corn, soybeans and cotton (‘Nonlinear temperature effects indicate severe damages to US crop yields under climate change’, Schlenker and Roberts, PNAS, 2009)? I suspect not.

    Some people may take solace in knowing that timescales may be measured in centuries, but with the Arctic melt trend lines suggesting an ice free summer by 2016/2017 weather patterns will continue to change for the worse in much shorter timescales. And catastrophic collapse of the WAIS – likely to occur once the Ross ice shelf disintegrates - would cause significant sea level rise occur in decades.

  34. 2013 SkS Weekly News Roundup #46B

    CCE, actually I expect that global warming denial will evaporate quickly after the fossil fuel industry loses its political clout. Solar power is starting to catch on in the US and direct exposure to the reality of solar power is starting to change 'conservative' viewpoints away from their propaganda driven opposition. More and more Republicans are coming out 'pro solar' in a party that reviled solar power just a decade ago. People can see for themselves that solar works, and as that knowledge spreads the days of fossil fuel political domninance are numbered.

    So, I'd say there is a tsunami of change already wiping out 'business as usual' power generation, and our political institutions are starting to shift in response.

    BTW: Next news report should include the interesting study by Halfar et al in PNAS extending Arctic sea ice records back ~650 years based on coral proxies. This finally provides decadal resolution data on how sea ice has responded to previous climate shifts. Should help pin down whether we are looking at a mostly ice free Arctic ocean by 2040, 2030, or 2020.

  35. Models are unreliable

    Echoing KR@659, I too have occasioned upon dvaytw engaging the denialista. My only criticism would be his (once) suggesting that I was an "actual climate scientist" which I am not. Then as @565 "Credentials are irrelevant in science, what matters is the strength of the evidence and the internal consistency of the argument. "

  36. Models are unreliable

    Moderators - My apologies, the link in my previous post should be "dvaytw's presentation of SkS information on other forums".

  37. Models are unreliable

    John Hartz - I would strongly disagree based on dvaytw's presentation of SkS information on other forums. He indeed is arguing the science with support from discussions here. 

    dvaytw - I would strongly suggest including such links (if possible) to these various discussions whenever referring questions from deniers? As in, every time? Not only does that make your position clearer, but provides context that might greatly aid answering such questions. In fact, that might cut short a pattern I've seen with your questions from several back-and-forths to a briefer conversation that more directly addresses the denier myths involved.

    As it is, your questions feel like a game of Telephone...

    Moderator Response:

    [JH] Thanks for the feedback re dvaytw's credentials. Your advice to him is also appreciated.

  38. Broad consensus on climate change across American states

    This is very positive. It shows that the hard work of scientists and dedicated people in general to get the word out, despite defective media tendencies to mal-inform. Except for Murdock's private disinformation network, most media is simply not dedicated to good reporting. As the article shows they must make the show flow and interesting. Importantly, reporters don't want to alienate the audience. They will say we listened to both sides, giving the impression of equality.

    One way to combat this tendency may be to take the rhetoric to the other side. The argument that all weather events are affected by additional energy in the system is more true than the idea that any single event cannot be demonstrated to be exclusively the result of climate change. The meteorological community, reporters in particularly, should consider the important responsibility of the distinction, just like they inform people when weather threatens their life of property.

  39. Global Warming Paws Fails to Materialise: Earth Still Warming and Global Sea Level Rising Like Gangbusters

    "Get your 'pause' off me you damned dirty deniers!!!"

    Sorry...I couldn't resist :)

  40. Dikran Marsupial at 02:31 AM on 20 November 2013
    Models are unreliable

    JH, surely nobody would stoop to that sort of behaviour on climate blogs?  Perish the thought! ;o)

  41. Super Typhoon Haiyan: Realities of a Warmed World and Need for Immediate Climate Action

    Hi Tom @3,

    That Wunderground figure you posted does tell a "nice" story.  This is not a rigorous statistical analysis, but what struck me about that figure is that is does support the research finding that the strongest tropical storms are becoming stronger as the oceans warm in response to global warming.

    For example, according to that Wundeground figure that you posted, 70% of the strongest landfalling hurricanes on record have occurred since 1990, and a whopping 50% since 2000.  That is not consistent with claims being made by some "skeptic" contrarians.

    In the case of Haiyan, data suggest that the cyclone traversed waters that were much warmer than usual below the surface, with anomalies approaching 5 C above normal near 100 m below the surface. Consequently, this storm had an immense amount of energy to tap into once it started to strengthen, and we witnessed the tragic and horrific consequences. For example, here is some footage of the storm surge as it came ashore at Hernani in eastern Samar on 8 November 2013.

  42. Models are unreliable

    MA Rodger & Dikran Marsupial:

    It is possible that dvaytw's "friend" is a ruse by dvaytw to get around the SkS Comments Policy. You should keep this possibility in mind when responding to dvaytw's "friend."  I and other Moderators need to keep this possibility in mind when reviewing dvaytw's posts.

  43. Broad consensus on climate change across American states

    Just as fear of the gun lobby keeps politicians from passing sensible gun laws, so fear of the fossil fuel industry lobby leads politicians from addressing the threat of climate change.  Even though the vast majority of Americans are in favor of universal background checks for buying firearms, members of Congress won't pass such laws for fear that the NRA and its minions will punish them politically.  Even if the vast majority of Americans believed in anthropogenic global warming and demanded our government do something about it, the Republicans in Congress would persist in pretending that global warming is not happening, is all a "liberal hoax" -- this to keep from being "primaried."  Depressing.

  44. Dikran Marsupial at 00:30 AM on 20 November 2013
    Models are unreliable

    dvaytw's friend wrote "What I am saying is that your belief in climate models is based on accounts written by science journalist, none of whom actually do the research themselves. In fact, looking through Skeptical Science, I am left wondering if the writers of the blogs actually can understand the original studies they are reporting on."

    Actually, I have worked on statistical downscaling of climate models, which is a task that requires a reasonable working knowledge of the operation, mathematical and statistical principles involved.  The paper was published in the international journal of climatology here:

    M. R. Haylock, G. C. Cawley, C. Harpham, R. Wilby and C. M. Goodess, Downscaling heavy precipitation over the United Kingdom: A comparison of dynamical and statistical methods and their future scenarios, International Journal of Climatology, volume 26, issue 10, pp. 1397-1415, August 2006. (doi)

    However, given he starts his question with an ad-hominem and just continues it, and adds little detail of the scientific question he wanted to ask, I rather doubt that any answer will change his opinion.

    Credentials are irrelevant in science, what matters is the strength of the evidence and the internal consistency of the argument.  Now if your friend is really concerned about credentials, ask him why he doesn't accept the views of the IPCC on models, as the authors of the IPCC report have as good a set of credentials as you could possibly want to see.  I suspect the reply will be another ad-hominem, but do ask him.

  45. Broad consensus on climate change across American states

    "Extreme Whether" is a new play that tells the story of the obstruction of climate science by deniers.  www.theaterthreecollaborative.org

  46. Super Typhoon Haiyan: Realities of a Warmed World and Need for Immediate Climate Action

    Mod in response @22

    RP is the official name; it stands for the Republic of the Philippines and it happens to be where I live...also known as the PI (for old school US Navy types) or as I like to call it “the corrupt and fetid 7100”.

    The UN (using the World Bank "World Development Indicators 2012) list the RP on the per capita income index @114 out of 186, tied with Uzbekistan, just behind Moldova and slightly above Botswana; that supports the statement that the Philippines is impoverished.
    http://hdrstats.undp.org/en/indicators/20206.html
    The good news that the government is trying to pass on is that 26% of the population is under the poverty line; they forget to include that the poverty line is a bar set very, very low, around $2600usd they also forget to mention that the % has increased 1%+ in 6 years. Of course Wiki list the poverty line at 16,000p per capita which is a long way away from $2600usd…
    So as a point of accept social science, the RP has a long history and culture of poverty that impacts any response to a natural disaster.
    These are the accepted points of fact concerning the RP that I was referring to. In the social sciences facts and metric standards have a little more interpretive breathing room than say chemistry or biology; but still your point is taken and in the future I will refrain from injecting any bias or subjective observations. As an aside notice all the construction bamboo and corrugated tin roof sections in the rubble…unlikely these kind of building materials were found in large quantities in New Orleans or New Jersey after those dramatic storms. There really isn’t any reason to compare building codes or enforcement; apples and cockroaches.
    Yes I know, this is not scientific nor does it address any aspect of climate science, it is merely an observation regarding the comparative impacts of this kind of weather event on a first world country vs. a third world country.

    In the future I will make nonscientific observations in the weekly forum as you suggested.

  47. Models are unreliable

    dvaytw @654.
    Your physicist friend-of-a-friend asks an exceedingly narrow question (presented @650) given he is describing his reasons for entirely dismissing climate modelling. And now he impunes SkS blog-writers & blogs and accuses commentors of wielding Okhams broom.
    All in all, folk who speak with such 'authority' do not do so in such a dismissive way if they are genuine. (The apparent incoherence is not untypical of a 'technophile' but not entirely a good sign.)  So I fear that that broom is in the hands of you physicist
    You could ask him to (or may be you could yourself) describe the "many of the points Tom and (he) have been stating (t)here (that) have been brought up, and if you watch closely, ... get brushed aside, as if paying too much attention to them would spoil the game." It would allow all to get the measure of each other without his personal appearance here at SkS which he is so afeared to do.

  48. Models are unreliable

    Thanks guys.  My friend now makes the following objection in defense of his refusal to actually simply appear in the comments section and ask his questions himself:

    What I am saying is that your belief in climate models is based on accounts written by science journalist, none of whom actually do the research themselves. In fact, looking through Skeptical Science, I am left wondering if the writers of the blogs actually can understand the original studies they are reporting on. I did a search through the blog for hindcasting and looked at some of the studies they comment on. It's clear that their representation of hindcasting in your link is not at all what the original researchers thought they were doing. http://www.skepticalscience.com/loehle-scafetta-60-year-cycle.htm Even in Skeptical Science account of the study, it's clear the aim of the research is to isolate relevant variables, not to 'test models'. http://www.skepticalscience.com/team.php But none of this surprises me when I look at the background of the people posting on the blog. Almost all of them are computer scientists or involved in Earth science of some sort. None of them have formal backgrounds in experimental research. They are like talking to economists about society and culture. They would have had little instruction or research experience in issues related to causality and experimental control. And as I said above, none of them have even published in this field. I don't know if you read through the comments to your link, but many of the points Tom and I have been stating here have been brought up, and if you watch closely, they get brushed aside, as if paying too much attention to them would spoil the game. Which, indeed, it would. They're bloggers, after all, not climate scientists. 

    It strikes me that I've never paid too much attention to credentials here, but would y'all respond to this?

     

  49. Help make our coverage bias paper free and open-access

    I've put in the Open Access payment, although we're still about £300 short of covering costs. Hopefully QJRMS will update the paper status today.

    Thanks again to everyone who has contributed!

  50. Ljungqvist broke the hockey stick

    Not only am I foolish enough to use that single proxy for a whole hemisphere, I use it for both hemispheres. And let me tell you why:

    vostok gis2

    foolish proxy

Prev  807  808  809  810  811  812  813  814  815  816  817  818  819  820  821  822  Next


The Consensus Project Website

THE ESCALATOR

(free to republish)


© Copyright 2024 John Cook
Home | Translations | About Us | Privacy | Contact Us