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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.

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Comments 65851 to 65900:

  1. New temperature record for the Arctic in 2011
    Peter, The amount of heat that goes into melting ice is very small compared to the amount of heat that the ocean absorbs. This graphic has a small area at the bottom that includes the latent heat. It is not discussed very often because it is not a player in the major changes. If something like ocean currents starts to transport large amounts of heat to the Antarctic it could melt ice very quickly.
  2. The National Center for Science Education defends climate science in high schools
    pirate#64: "Any teacher wanting to go more in-depth would have to own their own, but would be constrained by time." Some would say the textbook is a starting point, rather than an ending point. One could argue that a very valid 'critical thinking' exercise would be to ask how well the textbook agreed with current research. Of course, a teacher has to want to go more in-depth ... or want their students to question what is written in the textbook. Modeling that behavior may catch on; we could call it being 'skeptical' or some such. How hard could it be, given websites such as NCSE's Climate 101 and that other Skeptical whatchamacallit one. But if that's not what you might want, I suppose there's no reason to find the time.
  3. The National Center for Science Education defends climate science in high schools
    64, Pirate, In fact, a good teacher should look at those text books, go to the local and state boards of education, and stand up and say "We have a problem here, these books do not reflect the state of the science. We are teaching commercial instead of scientific positions and that's not what a school system should be doing. Knowledge and facts should not be for sale to the highest bidder, any more than political power should be (but is)."
  4. The National Center for Science Education defends climate science in high schools
    64, Pirate, Then the textbooks suck. Note that "some scientists" equals a handful of fringe scientists that honestly in any sane world would be discredited and dismissed. The way you cling to the denial tripe is just astounding. Even when you were shown that the very first of your misconceptions (the source of CO2 in the atmosphere) was false as a result of being purposely misled by denial propaganda, you still persist in believing only those end results that appeal to you (e.g. no extinctions have yet occurred due to climate change) and your thought process stops there. You "choose" what to teach, and give your students the option of "believing" what they choose, because you yourself have not and will not tackle the task of actually understanding that which you are supposed to teach, and that which you are so vocal about voicing an opinion. Please forgive my frustration with you, but you wasted my time by pretending to care about the science, while everything I sent was ignored and your reply would always consist of "what about..."? No matter how much information I gave explaining your fallacies, you said you had no time, but still trotted out more nonsense to consume my time. You are doing yourself, your community, and your students a grave disservice by carrying and promoting such a strongly held opinion from a position of extreme ignorance. That there are other people as misled and foolishly biased as you does not provide an adequate excuse. You are a teacher, and twenty years from today you will have to look in the mirror and take a healthy portion of the blame for the sort of world your students are going to have to live in -- and there will be no time machine that lets you go back and correct your errors.
  5. The National Center for Science Education defends climate science in high schools
    @ apiratelooksat50
    "You are making an assumption that has no basis. I did not leave anything out."
    Not the part missing from the text; that is understandably lacking. What is missing is the proper context (to which I referred) that is missing for students such as yours to be able to properly understand the text you reference. Since it was lacking from the text, it is your job as their educator to provide that context. By failing to provide that context you are biasing their education. Hence my concluding statement:
    "Thus, you continue to prosecute your agenda of manufactured doubt and delay. You dissemble."
  6. apiratelooksat50 at 06:41 AM on 28 January 2012
    The National Center for Science Education defends climate science in high schools
    DB at 62 You are making an assumption that has no basis. I did not leave anything out. As I stated that is from an Active Reading worksheet and is a direct cut/paste. I am simply showing what the textbook has in print. This is what the typical student sees and is taught and is assessed on. The textbook chapter and section pertaining to climate change goes further in depth, but is not up to date with the latest information as it was printed in 2008. The other textbooks we reviewed last year and considered for adoption offered very similar information. Any teacher wanting to go more in-depth would have to own their own, but would be constrained by time.
  7. NASA scientists expect more rapid global warming in the very near future (part 1)
    Actually Thoughtful - here's the thing, on the one hand you suggest people work things out for themselves, and on the other you say (as if speaking on behalf of most) that things are not clear. Do you see the rather large contradiction here? In fact your initial suggestion of letting people works things out for themselves actually invites people to fill in the gaps in their knowledge with "there be dragons" and other modern-day variants thereof - you know climate myths. We know for instance that many members of the public cannot wrap their heads around the fact that the scale and rate of climate change now happening far exceeds that of major extinction events in Earth's history. People hear that climate has changed in the past and fall for this simple-minded propaganda. This distortion of the truth has to be continually corrected. There is no point in relying upon the man or woman in the street to work things out for themselves - they get the bulk of their misinformation and myths from the mainstream media. "I find this statement incredibly elitist:" Who cares? That's a subjective interpretation you have chosen to apply. Are you now suggesting that the general public is well-acquainted with climate science? Many a poll suggests that that isn't the case. " If you don't understand why people are confused by short term weather patterns" Many people are confused on a great many things, especially when it comes to climate science. But I don't confuse an attempt at trolling (casting doubt in this case) by several individuals as indicative of what people might think in general, and there is certainly no way to correct confusion in one blog post. Now it's just me, but I think it might be useful for the general public to understand the reasons why we are likely to get rapid global warming over the next 2-4 years (or thereabouts). Maybe when it happens a light bulb will go off in their heads and they'll remember "Hang on, there was some NASA scientists that said this was going to happen, and it's because of the solar cycle and El Nino!" That would be preferable to the alternative of filling knowledge gaps with myths.
  8. What's Happening To Tuvalu Sea Level?
    Tealy, Everyone knows that the IPCC estimates specificly omit ice melt from the great ice sheets. they leave out the greatest contributator to sea level rise. You need to read the background so that you don't make these basic mistakes. The citations you have ignored detail these errors.
  9. actually thoughtful at 04:58 AM on 28 January 2012
    NASA scientists expect more rapid global warming in the very near future (part 1)
    I wrote this one before, it appears to have gone missing. Rob Painting - your reply to me relies on part 2, which as of this writing, is not available. The concerns raised by some posters here indicate that part 1 may not be able to stand on its own. While you are welcome to your opinion - I find this statement incredibly elitist: "The woman and man in the street isn't going to be able to make sense of the observations, especially with distortions by fake-skeptics. That's why we exist - to communicate this information in a, hopefully, comprehensible manner. To expect a public audience to be able to process this information without guidance is foolish." At the end of your reply to me you mention there is no nuance. If you don't understand why people are confused by short term weather patterns, that could be a root cause of why this post is getting so many responses of the "there be dragons" type.
  10. The National Center for Science Education defends climate science in high schools
    pirate#61: "our Holt Environmental Science textbook" That is because Texas is a major buyer of textbooks in the US - and publishers write to conform to Texas' educational standards. Texas' conservative-dominated SBOE has this policy since 2009: in all fields of science, analyze, evaluate, and critique scientific explanations by using empirical evidence, logical reasoning, and experimental and observational testing, including examining all sides of scientific evidence of those scientific explanations, so as to encourage critical thinking by the student. On the surface, this is benign; in reality it can be insidious because it creates the false impression of equivalence between sides. If 'all sides' are to be evaluated, all sides get to present their 'evidence'. Hence demand for Michaels and his ilk to creatively edit. All sides: objects fall because they 'want to'. Let the kids decide. Science by popular consent. Sounds like fun.
  11. New temperature record for the Arctic in 2011
    The increased open water and warmer air have sure impacted the glaciers on Arctic islands such as Svalbard and Novaya Zemyla
  12. The National Center for Science Education defends climate science in high schools
    @ apiratelooksat50
    "They point out that widespread fluctuations in temperature have occurred throughout geologic time."
    You omit the understood caveats: that said fluctuations occurred due to known forcings and feedbacks, none of which explain the warming of the past 50 years without the consideration of the radiative physics of CO2. And that the rate of change of those past fluctuations occurred at geologic changes, which contrasts to the extreme rate of change of temps and CO2 over the past 50 years, which is without parallel in the paleo record. Thus, you continue to prosecute your agenda of manufactured doubt and delay. You dissemble.
  13. apiratelooksat50 at 04:06 AM on 28 January 2012
    The National Center for Science Education defends climate science in high schools
    In South Carolina for Environmental Science, we don't have any state direction on teaching climate change other than our curriculum and pacing guides. We assess knowledge retention with District based 9-weeks tests and are moving toward a statwide end of course test. I would imagine that if this was put in place it would be treated by the individual teachers about like we treat evolution - which as you know is a topic that is polarizing. Our state guidance is that we present evolution as a well-supported theory. The student does not have to believe in evolution, but is responsible for understanding the mechanisms and other facts. We do not offer any religious based theories due to separation of church and state. I push the limits on teaching evolution, while others shy away from it and do the bare minimum. And, FWIW, from our Holt Environmental Science textbook is the following excerpt from an Active Reading worksheet in the Climate Change section: "Many scientists think that the increasing greenhouse gases in our atmosphere result in increasing the average temperature on Earth. The result, they believe, will be a warmer Earth. This predicted increase in global temperature is known as global warming. Earth’s average global temperature increased during the 20th century. Many scientists project that the warming trend that began in the 20th century will continue throughout the 21st century. However, not all scientists agree that the observed global warming is due to greenhouse gases. Some scientists believe that the warming is part of natural climatic variability. They point out that widespread fluctuations in temperature have occurred throughout geologic time."
  14. What's Happening To Tuvalu Sea Level?
    Tealy wrote: "I agree with you wholeheartedly." So... you agree that Tuvalu sea level is changing primarily due to ice melt? Funny how that isn't clear from your postings. Your argument seems to boil down to the fact that we don't have an exact breakdown of long term Tuvalu sea level rise by category (e.g. total ocean volume change vs gravitational change vs land subsistence vs prevailing winds change). As such, I don't really see the point. Becker 2011 estimates land subsistence at about 10%, and the other three are all being driven, in the same direction, by global warming. Is this just another variation on, 'if we do not know everything then magical unknown factors could come along and reverse all observed and modeled trends'? If so, then yes... that could happen. It is just so unlikely as to be not worth worrying about until some shred of evidence supporting it is found.
  15. New temperature record for the Arctic in 2011
    I am a layman - albeit one that has been following James Lovelock's writings since 1980. I hope this isn't off topic but I would appreciate being pointed at an explanation of exactly how latent heat of melting (fusion?) fits into the whole warming pattern and which models it appears in and which it doesn't. I assume that as ice melts for good and all that energy isn't 'used up' it isn't just albedo that decreases but there is a (major?) increase in the amount of heat being added to the system. Nobody seems to talk about this though. Perhaps I am at such a low level of knowledge that everyone includes it as a constant or something but I'd appreciate the pointer.
  16. Skepticism About Lower Atmosphere Temperature Data
    (-snipI sit in a London Flat overlooking the River Thames, with a patch of lawn, and the paved Thames Walk between my window and the river. The Thames here is tidal, rising some 40 feet twice a day, and halving its surface area. The flats are built on the site of an old wharf (dock) with its workings and its warehouses long gone. Let us go back to the beginning of the 20th century and attempt to measure its surface temperature trend from 1900 to 1997, almost 100 years. To define the temperature we could install a few max/min thermometers close to the foreshore, a few meters above the high water mark, and take the temperature of the water from Putney bridge with a bucket a few times a day (across the oceans they used buckets from ships). We would rapidly accumulate a large amount of time series data, moderator, which we could average daily, weekly, monthly, and annually.. Over time we would have to move the thermometers, the wharf and all the surrounding area would be extensively developed (and re-developed), traffic, trains, and planes would be introduced, and the population would rise at least ten-fold. We might also be uncomfortably aware that we have not even attempted to measure the temperature at the actual surface; we are measuring atmospheric temperature with all its wind-based variability. But we can face all that squarely and pass on. Over the period, almost a century, we will be looking for the impact of a CO2 increase from about 290ppm to 360 ppm, or 24%. What would our results have looked like? How can we possibly tell? As a matter of fact we can get a good idea, because the Central England Temperature record is measured like this, averaged over three sites, without the complication of water.Their trend temperature over the period was 0.54 degrees C per century. Did the surface temperature, with all its systematic (not random, Tom) variations, really increase by half a degree? Who knows. It is, at best, suspect. We do know that we climbed out of a Little Ice Age over at least half of this period. In the nineteenth century the Thames here frequently froze in the Winter, as did the sea round our coasts. If the surface temperature really did increase, what caused it? Was it the CO2 increase (24%)? If we had known this result in 1900, would we have stopped all the development, left our coal in the ground and not looked for oil? Will China and India abandon their development today on this kind of evidence? Will the Americans give up their air conditioning?-)
    Response:

    [DB] The subject of this thread is Skepticism About Lower Atmosphere Temperature Data, a discussion of satellite global temperature variations & the misrepresentation of the same by fake-skeptics.

    Off-topic musings on regional and local temperature variations & misc things snipped.

  17. Public talk: Global Warming - The Full Picture
    Very interesting! Informative answers to the (archetypal) "skeptics" of the audience as well.
  18. What's Happening To Tuvalu Sea Level?
    Cbdunkerson @55 I agree with you wholeheartedly. Yes zonal tilting (or regional variations if you prefer) will be insignificant compared to other causes of sea level rise. It's poorly understood, even acknowledged on this forum as contradictory, and therefore should not be included in projections of sea level rise. A recent (50 year) increase in zonal tilting does not in itself mean zonal tilting will continue to rise. Daniel Bailey @56 Thank you but they are all references to sea level rise being the average sea level rise. Regional differences in sea level rise, by that i mean why say Tuvalu has a different sea level rise than say Fiji, Hawaii, or Panama, is not addressed by those references, only the average rise is addressed.
    Response:

    [DB] "Thank you but they are all references to sea level rise being the average sea level rise."

    In order to properly answer your question you need more than a simple answer; SLR is a complex process, but is well studied from the paleo record & well-reproduced in models and subsequently verified with regional analyses.

    The first portion establishes that there is extensive literature much more current that the IPCC AR4 you reference.  You were given a small portion of that, a portion documenting considerably higher SLR rates in the pipeline as well as the relationship between temperature (a defining metric for sea levels) and SLR.  The last two links specifically reference regional variations in SLR due to ice sheet melt. So you were indeed given answers.

    Here's more:

    Regional impacts due to SLR:

    Thermal expansion of sea water a limited factor in SLR:

  19. What's Happening To Tuvalu Sea Level?
    Rob Painting @57 Don't tell me, take your vitriol to the IPCC and tell them they got it all wrong and that it is "nonsense". If you would read my post you will see I gave a citation as you asked, it quoted the IPCC, I gave a web address, and an explanation. If you would like more detail here is the IPCC website showing 6 climate models of sea level rise from 2000 to 2100, and all 6 models show thermal expansion is the greater component of sea level rise accounting for about 2/3 of the total rise. For example the B1 model shows the main components over the 21st century for the 95% confidence interval as:- Thermal expansion of 0.24m Land ice sum of 0.18m Resulting Sea level rise of 0.38m Ie thermal expansion is greater than ice melt!!!! http://www.ipcc.ch/publications_and_data/ar4/wg1/en/ch10s10-6-5.html
    Response:

    [DB] "Ie thermal expansion is greater than ice melt!!!!"

    Again, you rely upon outdated information.  More current exist, as referenced in the response to your comment subsequent to this.  Future SLR in the pipeline will greatly exceed thermal expansion of the oceans.

    A presumption that your source citations from 5 years ago supercede the advice and citations given to you in 2012 is a strategy for failure.  FYI.

  20. New temperature record for the Arctic in 2011
    The interesting thing is that the Arctic is heating up rapidly, while spilling colder air onto the continents, like we saw during the winters of 09/10 and 10/11. The AO has now gone negative again, and we are seeing the same thing again. Due to the poor coverage of the Arctic, this puts a cool bias into the global average data that mostly ignore the Arctic, especially the CRU data. I would think some of Trenberths' "missing heat" is right there, in the Arctic, melting the sea ice, among other things. At Longyearbyen, Svalbard (close to 80 degs latitude), it is raining as we speak. On January 27th. Average temp for the last 30 days is 17F above the normal: http://www.yr.no/place/Norway/Svalbard/Longyearbyen/statistics.html Temps have been way above normal for years, pretty much without getting any media coverage whatsoever. In mainland Norway, after a very warm autumn and early winter, a few days of normal January temps was obviously sensational enough to warrant pretty much the entire frontpage of the national newspapers: http://www.yr.no/artikkel/1.7967259 Pretty much no coverage of 4 months with way above normal temps, but slightly below freezing temps at the latitude of Labrador in January is first page news. The press here is mostly run by hardcore disinformers, so not too surprising, I guess.
  21. 2012 SkS Weekly Digest #3
    "Does one have to be a climate science wonk in order to comprehend the majority of articles posted on SkS?" No. If you're a non-science person, SkS is probably the best way to become such a 'wonk'. And the 3 tier system is fantastic.
  22. New research from last week 2/2012
    Day et al. have published a correction to their paper "The impact of a seasonally ice free Arctic Ocean on the temperature, precipitation and surface mass balance of Svalbard". Their abstract says that: "This experiment results in a 3.5 m water equivalent increase in Svalbard's SMB compared to the present day." The number 3.5 m is an error, it should be 0.35 m.
  23. Sceptical Wombat at 18:03 PM on 27 January 2012
    NASA scientists expect more rapid global warming in the very near future (part 1)
    A small typo. The word "monotonous" just after Fig 1 should presumably be "monotonic."
    Moderator Response: [Rob P] Fixed thanks. Mind you it would be tedious and boring!
  24. Doug Hutcheson at 17:56 PM on 27 January 2012
    2012 SkS Weekly Digest #3
    From your perspective, how well does SkS communicate what peer reviewed science has to say about global warming?
    SkS is my major resource for AGW info. The recent addition of the weekly summary of papers gives me the impression that I am getting access to a broad cross-section of the available literature, so from my perspective you are doing an excellent job.
    Does one have to be a climate science wonk in order to comprehend the majority of articles posted on SkS?
    Majority? No. Some are beyond my non-scientific education at times, but the comments generally clarify points that have gone over my head.
    Does the three-tiered rebuttal system serve a useful purpose?
    Definitely valuable to me. In fact, reading them in order from simplest to most technical often helps me to understand the technical ones better.
    How could SkS better communicate information to the average person who has only a rudimentary understanding of climate science?
    I came here as a person in that category and have found almost everything accessible and comprehensible, but that may partly be due to my being interested enough in the topic to google for further explanations of things I don't understand first time. Often, I find the original papers under discussion a bit incomprehensible, for example because I lack the math to follow the equations, but the SkS articles themselves are generally lucid and paced at my speed (unlike one of your commenters to a thread late last year, who linked to his own blog and I challenge anyone to figure out what he is saying: perhaps I lack the comprehension skills needed [grin]).
  25. NASA scientists expect more rapid global warming in the very near future (part 1)
    Victull, you say: As a lukewarmer, I must admit that there seems to be some confusion of surface temperature warming with heat energy absorption in the oceans in this post. And you also say: I would like understand the mechanism of how this heat gets back up into the atmosphere. If you don't understand this mechanism, which is not an unimportant one by any means, why would you describe yourself as a "lukewarmer"? Shouldn't you hold off on applying that sort of label to yourself until you've understood the mechanisms under discussion? I don't mean this an attack. I'm honestly curious. What is the justification for presuming to know the most likely outcome of a process that you concede you don't adequately understand?
  26. The National Center for Science Education defends climate science in high schools
    John Hartz#57: I can't find any first-hand source for the story about new Texas education standards. Everyone has quoted the LA Times article, Texas and Louisiana have introduced education standards that require educators to teach climate change denial as a valid scientific position. But there are no citations in this article and a search turns up nothing other than websites and blogs repeating the same story without further details. One source may be from late November, here: At last week’s meeting in Austin, state board members began mapping out the schedule for adopting textbooks and curriculum standards over the next decade. Although they won’t make any final decisions until early next year, board members considered a schedule that would have them adopting new science textbooks in 2013 There's an ongoing struggle for textbook language, with nothing new about climate change education beyond the 2009 textbook standards. There will be an election for the State Board of Education this year; a right-wing takeover could start this ball rolling again, but it appears to be on hold for now. Oklahoma is another story: The bill would, if enacted, require the state board of education to assist teachers and administrators in promoting "critical thinking, logical analysis, open and objective discussion of scientific theories including, but not limited to, evolution, the origin of life, global warming, and human cloning" Louisiana has such legislation on its books since 2008. The buzz words are once again 'teach both sides, let the kids decide,' which is straight out of the ID playbook.
  27. National (US) Strategy Proposed to Respond to Climate Change’s Impacts on Fish, Wildlife, Plants
    Recommended reading: “Obama's Global Warming Plan: Band-Aids for Wildlife” by Edward Flattau, the Huffington Post, Jan 26, 2012 To access this article, click here.
  28. What's Happening To Tuvalu Sea Level?
    Tealy - at comment @46 you claimed that thermal expansion contributed more to current sea level rise. When I asked for a citation at comment @47, you replied with an armflapping response about projections for the 21st century, you did not provide a citation to support your assertion. Your assertion is wrong. The addition of water mass (melt-water from ice sheets and glaciers) to the rate of current sea level rise is over twice that of that of thermal expansion from global warming. See Leuliette & Willis (2011) - Balancing the Sea Level Budget. It is clear from your persistently wrong assertions and unwillingness to learn that you are here simply to create the false impression of doubt, and also to waste people's time. I'm sure you can find other blogs where your commitment to non-learning and erroneous beliefs is appreciated. I would urge other moderators to not tolerate further nonsense -snip-.
    Moderator Response: [Albatross] I share your frustration but please tone it down. Thanks.
  29. Wcalvin@uw.edu at 11:17 AM on 27 January 2012
    NASA scientists expect more rapid global warming in the very near future (part 1)
    Continuing.... Most of the excess CO2 and heat is still in the surface layer. The North Atlantic is the only place with a lot of excess CO2 (and presumably heat) below the thermocline (Sabine et al 2002) and thus kept away from the atmosphere for a thousand years. That is the only part that can be considered to be in long-term storage. So yes, most of the excess CO2 and heat is now in the ocean. But it is only in the wind-stirred surface layer and not really in long-term storage.
  30. New temperature record for the Arctic in 2011
    DB, Yep, lovely. It appears the 'hiatus decade' started at +0.6C and ended above +1.5C. Anyone still saying warming has 'slowed down', 'paused' or whatever needs to explain this graph.
  31. Wcalvin@uw.edu at 11:03 AM on 27 January 2012
    NASA scientists expect more rapid global warming in the very near future (part 1)
    Re times for deep ocean heat to make a difference see Winton, Takahashi, and Held, 2009:  Importance of ocean heat uptake efficacy to transient climate change. J.Clim, 2009 Deep ocean is 98% of the water so there is a 50-fold dilution of whatever excess CO2 and heat is sunk into it by the overturning circulation. Takes about 1000 years to make it back up.
  32. Patrick Michaels Continues to Distort Hansen 1988, Part 2
    Ah, it was before that...
  33. The National Center for Science Education defends climate science in high schools
    @Sphaerica #58: My suggestion that you and Pirate take your discussion off-line had to do with the deteriorating tone of your exchanges. I purposely did not post my suggestion as a Moderator's comment.
  34. New temperature record for the Arctic in 2011
    Then there was this lovely corroborative graphic derived from the BEST datasets from longtime Neven-contributor Wipneus:
  35. The National Center for Science Education defends climate science in high schools
    54, Pirate, The problem with your interpretation of that last bullet point is that you appear to be reading the phrase "to do so we need to understand why climate change is happening" as an implicit admission that "we don't know," when what they are actually saying is "we do know, and we need you as a teacher to convey that knowledge to those that do not know." As far as what the IPCC says about human activities causing climate change, first that is now 5 years old. What they said then you can see here, such as:
    Most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic GHG concentrations.
    But times have changed. Consider these recent posts (Huber and Knutti 2011 and Foster and Rhamstorf) here on Skeptical Science, covering the latest research. The upshot is that when you separate natural and anthropogenic causes, the warming is obvious, and natural factors are most likely to have contributed a net cooling effect. This means that not only is all of the warming you see today anthropogenic in origin, but it would also be even worse if not for the cooling factors. 55, John Hartz, No. This is a post about teaching the science, and Pirate is a science teacher. If this is not an appropriate topic of debate on this site, then what is?
  36. What's Happening To Tuvalu Sea Level?
    @ Tealy
    "ice melt and thermal expansions of oceans contribute to regional differences in sea level, but have not been able to explain why in scientific terms or provide a specific source that says it does."
    Try these papers and articles from around SkS and the web:
    1. Climate related sea-level variations over the past two millennia
    2. Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise
    3. Paleoclimate Implications for Human-Made Climate Change
    4. Sea Level Rise
    5. Global sea level linked to global temperature
    6. Sea levels will continue to rise for 500 years
    7. Sea Level Hockey Stick
    8. The Last Interglacial - An Analogue for the Future?
    9. 2000 Years of Sea Level (+updates)
    10. Melting Threat From West Antarctic Ice Sheet May Be Less Than Expected; But U.S. Coastal Cities At Risk
    11. Reassessment of the Potential Sea-Level Rise from a Collapse of the West Antarctic Ice Sheet
  37. New temperature record for the Arctic in 2011
    It's taken a bit of time to really filter through - the observations of the methane degassing seems to have triggered another round of attention. It's a pity that the IJIS tracking system went down last October - between its 15% baseline and DMI's 30% baseline, there was an easy way to do daily tracking of extent. Do not expect any political action. Brace yourself for the worst-case forecast being the mid-line of possible outcomes. You might as well tell the Conquistadors to stop looking for gold.
  38. What's Happening To Tuvalu Sea Level?
    Tealy, you misread. The trade winds are responsible for the entirety of the phenomena you are calling 'zonal tilting'. What is tiny is the long term change in sea level due to changes in the trade winds. Basically, you are ignoring the two largest factors causing sea level rise (i.e. thermal expansion in the short term and ice melt in the long run) to concentrate obsessively on a factor which disappears in the rounding. Think about it for a moment. Do you really think that the slight increase in sea surface height due to wind blown water, caused by the slight increase in trade wind strength (caused by global warming), is going to be more significant than adding more water and increasing the volume of the water already present? It's like arguing that the water level in a pot isn't rising because the chunk of ice inside is melting and the water is getting hotter... it is rising because there is a slightly stronger breeze blowing over the surface.
  39. The National Center for Science Education defends climate science in high schools
    Here’s another piece of the puzzle… On January 16, the Los Angeles Times revealed that anti-science bills have been popping up over the past several years in statehouses across the U.S., mandating the teaching of climate change denial or "skepticism" as a credible "theoretical alternative" to human caused climate change came. The L.A. Times' Neela Banerjee explained, "Texas and Louisiana have introduced education standards that require educators to teach climate change denial as a valid scientific position. South Dakota and Utah passed resolutions denying climate change. Tennessee and Oklahoma also have introduced legislation to give climate change skeptics a place in the classroom." What the excellent Times coverage missed is that key language in these anti-science bills all emanated from a single source: the American Legislative Exchange Council, or ALEC. Source: “ALEC Model Bill Behind Push to Require Climate Denial Instruction in Schools” by Steve Horn, DeSmog Blog, Jan 27, 2012 To access this detailed expose, click here.
  40. New temperature record for the Arctic in 2011
    Brian, I also saw it on Neven's blog too last week, and although IANACS, was immediately struck by its significance, as well as the its lack of coverage in the media. Hopefully it'll get mainstream airtime soon.
  41. What's Happening To Tuvalu Sea Level?
    Tealy, "Zonal Tilting" appears to be a term that you have made up so it is not surprising that you get no hits. The IPCC projection is outdated and incomplete. Current worldwide sea level rise is about 3.2 mm/yr. The Tuvalu excess is only 2 mm/yr or 4 cm over the past 20 years. That rate could go on for decades. Worldwide average global sea level rise is currently conservatively estimated at 1-2 meters by the year 2100. That is about 15mm/yr over the entire globe (but the rise will not be linear). Obviously, that includes Tuvalu. You suggest that the rise at Tuvalu will be substantially less than that. You must provide evidence for your extraordinary claim. Since you appear to be unaware that 1-2 meters by 2100 is the current projection, you need to read the background so that you can contribute to the discussion.
  42. Patrick Michaels Continues to Distort Hansen 1988, Part 2
    Utahn @26, "Oddly, he often uses your submitted email to reply to any complaint, rather than in the comments.." He is not permitted to do that. Your email on that site is meant to be confidential. If if he has emailed you or someone else in the last week or so), please let me know.
  43. What's Happening To Tuvalu Sea Level?
    CB @ 52 Yes people have told me that ice let and thermal expansions of oceans contribute to regional differences in sea level, but have nnot been able to explain why in scientific terms or provide a specific source that says it does. I have looked to my wits end and cannot find an explanation or source either, hence why I am asking. Zonal tilting is the name for the regional difference that occurs across the pacific, it's the macro regional difference. If trade winds are a tiny cause of the zonal variations, what are the large causes?
  44. New temperature record for the Arctic in 2011
    I first saw this on Neven’s Arctic Sea Ice Blog and it was informative to read ClimateProgress’s further coverage. The accumulated evidence from what’s happening to the planet’s ice and the ever-worsening news coming out of the Arctic show things have reached the point of being excruciatingly obvious but the politicians just continue to stare the other way. The “political” penny should have dropped so heavily about the vanishing ice and global temperatures that it registered above eight on the Richter seismic scale and caused a tsunami of appropriate action. Instead, the denialists are reaching new heights of intentional misinformation, like this “analysis” of what’s happening in the Arctic I came across a couple of weeks ago. “-------The Arctic ice extent is almost back to average, the Arctic has been doing nothing unusual, but they continue to pretend that the Arctic ice is dwindling. I wish they would try addressing the real world rather than their politically-biased fantasies”. This beggars belief because not one single word is true, and manifestly so, starting with the absurd claim about the ice extent. As for “the real world and politically-biased fantasies”, I’ll leave you to work out who’s really off with the fairies – that shouldn’t take very long. http://nsidc.org/data/seaice_index/
  45. Patrick Michaels Continues to Distort Hansen 1988, Part 2
    Martin, if you'd like to bring up something to him, or link to these articles, you can comment at his Forbes "Climate of Fear" website. Ironically named, because the only fear evident is his fear of any government regulation...Oddly, he often uses your submitted email to reply to any complaint, rather than in the comments...
  46. NASA scientists expect more rapid global warming in the very near future (part 1)
    Eric (skeptic)- "How much of the heat that is stored in the deep ocean not coming back in decade timescales?" Probably none. See SkS post on Meehl (2011) - Ocean Heat Poised To Come Back And Haunt Us? It's heat in the surface layers of the ocean that are lost to the atmosphere. That's why the oceans lose heat during El Nino - nothing to do with the deep ocean. Victull @ 15 - The confusion is yours, no point in trying to blame the blog post . In one sentence you point out that heat lost during ENSO must be balance by cooling elsewhere, and the very next you write about the warming rate highlighted in Loeb (2012). You gave yourself a very strong clue toward processing this information, but then failed to connect the two. Sunlight entering the surface layers warms the ocean. La Nina is when there is a large gain in ocean heat, and El Nino is when the heat is lost to the atmosphere. Although the cloud-related changes due to ENSO do affect sunlight reaching the ocean surface, the tilting of the thermocline is essentially a re-distribution of this heat already in the ocean. It's that process which affects surface temperatures so greatly. This information is spelled out in the post.
  47. The National Center for Science Education defends climate science in high schools
    I am sorry to stay off topic, but I think it might be helpful to have a page of climate linked modern extinction events that is regularly updated.
  48. The National Center for Science Education defends climate science in high schools
    apiratelooksat50 & Sphaerica: It would benefit everyone if the two of you would take your Hatfieild-McCoy feud off-line. You guys have previously communicated via email. Please do so again.
  49. Patrick Michaels Continues to Distort Hansen 1988, Part 2
    Thanks Martin. World Climate Report doesn't ever allow comments. It's intended more of a disinformation propagation site than a discussion blog.
  50. What's Happening To Tuvalu Sea Level?
    Tealy, as people have told you several times now, ice melt and thermal expansion do contribute to regional differences in sea level. Your continued insistence that 'zonal tilting' is the only relevant issue for regional (vs average) sea level is simply false. Indeed, changes in the zonal variations caused by the trade winds are comparatively tiny.

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