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News Feeds

Real Climate

  • Nenana Ice Classic 2016 - Just a quick note since I’ve been tracking this statistic for a few years, but the Nenana Ice Classic tripod went down this afternoon (Apr 23, 3:39 Alaska Standard Time). See the earlier post for what this is and why it says something about the climate (see posts on 2014 and 2015 results). With this […]
  • The Volcano Gambit - Anyone reading pundits and politicians pontificating profusely about climate or environmental science will, at some point, have come across the “volcano gambit”. During the discussion they will make a claim that volcanoes (or even a single volcano) produce many times more pollutant emissions than human activities. Often the factor is extremely precise to help give […]
  • Unforced Variations: Apr 2016 - This month’s open thread. Standard rules apply…
  • What drives uncertainties in adapting to sea-level rise? - Guest article by Sally Brown, University of Southampton Let me get this off my chest – I sometimes get frustrated at climate scientists as they love to talk about uncertainties! To be sure, their work thrives on it. I’m someone who researches the projected impacts and adaptation to sea-level rise and gets passed ‘uncertain’ climate […]
  • The Early Anthropocene Hypothesis: An Update - Guest post from Bill Ruddiman, University of Virginia For over a decade, paleoclimate scientists have argued whether the warmth of the last several thousand years was natural or anthropogenic. This brief comment updates that debate, also discussed earlier at RC: Debate over the Early Anthropogenic Hypothesis (2005) and An Emerging View on Early Land Use […]
  • Unforced Variations: Mar 2016 - This month’s open thread. Pros and cons of celebrity awareness-raising on climate? The end of the cherry-picking of ‘pauses’ in the satellite data? Continuing impacts of El Niño? Your choice (except for the usual subjects to be avoided…).
  • Millennia of sea-level change - How has global sea level changed in the past millennia? And how will it change in this century and in the coming millennia? What part do humans play? Several new papers provide new insights. 2500 years of past sea level variations This week, a paper will appear in the Proceedings of the National Academy of […]
  • What is the best description of the greenhouse effect? - What exactly is the greenhouse effect? And what does it look like if we view it from a new angle? Of course, we know the answer, and Raymond Pierrehumbert has written an excellent paper about it (Infrared radiation and planetary temperature). Computer code used in climate models contain all the details. But is it possible […]
  • Marvel et al (2015) Part III: Response to Nic Lewis - The first post in this series gave the basic summary of (henceforth MEA15) and why I think it is an important paper. The second discussed some of the risible immediate media coverage. But there has also been an ‘appraisal’ of the paper by Nic Lewis that has appeared in no fewer than three other climate […]
  • Anti-scientists - Ross McKitrick was so upset about a paper ‘Learning from mistakes in climate research’ that he has written a letter of complaint and asked for immediate retraction of the pages discussing his work. This is an unusual step in science, as most disagreements and debate involve a comment or a response to the original article. […]

Climate Depot

Climate Skeptic

  • My Climate Plan, Wherein a Climate Skeptic Actually Advocates for A Carbon Tax - I am always amazed at how people like to draw conclusions about what I write merely from the title, without actually reading everything I wrote.  This is cross-posted from Coyote Blog, where I already am getting accusations of selling out.  Please read before judging.  I have proposed a carbon tax in a way that would […]
  • Come See My Climate Talk on Wednesday Evening, February 24, at Claremont-McKenna College - I am speaking on Wednesday night at the Athenaeum at Claremont-McKenna College near Pomona on Wednesday, February 24.  It is open to the public and is free.  Come by a say hi if you are in the area.  You can just walk in to the presentation which begins at 6:45 but if you want to attend […]
  • US Average Temperature Trends in Context - Cross-posted from Coyoteblog. There was some debate a while back around about a temperature chart some Conservative groups were passing around. Obviously, on this scale, global warming does not look too scary.  The question is, is this scale at all relevant?  I could re-scale the 1929 stock market drop to a chart that goes from […]
  • Revisiting (Yet Again) Hansen’s 1998 Forecast on Global Warming to Congress - I want to briefly revisit Hansen’s 1998 Congressional forecast.  Yes, I and many others have churned over this ground many times, but I think I now have a better approach.   The typical approach has been to overlay some actual temperature data set on top of Hansen’s forecast (e.g. here).  The problem is that with […]
  • Matt Ridley: What the Climate Wars Did to Science - I cannot recommend Matt Ridley’s new article strongly enough.  It covers a lot of ground be here are a few highlights. Ridley argues that science generally works (in a manner entirely parallel to how well-functioning commercial markets work) because there are generally incentives to challenge hypotheses.  I would add that if anything, the incentives tend […]
  • Manual Adjustments in the Temperature Record - I have been getting inquiries from folks asking me what I think about stories like this one, where Paul Homewood has been looking at the manual adjustments to raw temperature data and finding that the adjustments actually reverse the trends from cooling to warming.  Here is an example of the comparisons he did: Raw, before […]
  • Mistaking Cyclical Variations for the Trend - I titled my very first climate video “What is Normal,” alluding to the fact that climate doomsayers argue that we have shifted aspects of the climate (temperature, hurricanes, etc.) from “normal” without us even having enough historical perspective to say what “normal” is. A more sophisticated way to restate this same point would be to […]
  • Typhoons and Hurricanes - (Cross-posted from Coyoteblog) The science that CO2 is a greenhouse gas and causes some warming is hard to dispute.  The science that Earth is dominated by net positive feedbacks that increase modest greenhouse gas warming to catastrophic levels is very debatable.  The science that man’s CO2 is already causing an increase in violent and severe […]
  • Those Who Follow Climate Will Definitely Recognize This - This issue will be familiar to anyone who has spent time with temperature graphs.  We can ask ourselves if 1 degree of global warming is a lot, when it is small compared to seasonal variations, or even intra-day variation, you would find in most locations.  That is not a trick question.  It might be important, […]
  • Layman’s Primer on the Climate Skeptic Position - I am a “lukewarmer”, which means a skeptic that agrees that man-made CO2 is incrementally warming the Earth but believes that the amount of that warming is being greatly exaggerated.  In addition, I believe that the science behind evidence of current “climate change” is really poor, with folks in the media using observations of tail-of-the-distribution weather […]

Watts Up With That

  • James Hansen gets grilled by attorney in Omaha after spewing nonsense - From the Powerline blog: Nebraska attorney Dave Begley is our faithful Omaha correspondent. Dave reports: (video follows) Friday night in a crowd of 500 to 700 people at Creighton University it appeared that I was not only the only conservative, I was also the only person who was thinking clearly and critically. One of global…
  • Warren Buffett’s Berkshire Hathaway Shareholders Reject Climate Motion - Guest essay by Eric Worrall Shareholders of Warren Buffet’s Berkshire Hathaway have rejected an attempt by activist shareholders, to force the company to write a report about the “dangers” climate change poses to the Insurance business. Berkshire Hathaway shareholders have overwhelmingly rejected a resolution calling for the company to write a report about the risks…
  • The Dogs of Winter - Guest Post by Willis Eschenbach After a very long night, with a ten-hour flight somewhere in the middle, I blew into Fiji at about five in the morning. I was reminded during my trip of the old story about the guy who decided to leave the ocean behind. He said he was going to put…
  • Correlation Between NCEP/NCAR Re-analysis and Other Global Temperature Anomaly Data - Guest Post By Walter Dnes On his website, Nick Stokes has set up an interesting global temperature anomaly visualization, based on NCEP/NCAR re-analysis data. The dry technical details are listed in this blog post. Based on his explanation, I’ve been able to closely duplicate his work to within +/-0.003 Kelvin degree, using different tools. This post…
  • Leonard DiCaprio working on another climate movie, will it bomb as bad as ‘The 11th hour’? - From the NASA Goddard Facebook page, 4/29/16: Academy Award winning actor and environmental activist Leonardo DiCaprio visited Goddard Saturday to talk about NASA Earth science with former astronaut Piers Sellers, the current deputy director of Goddard’s Sciences and Exploration Directorate. They discussed NASA missions studying changes in the Earth’s atmosphere, water and land masses for…
  • Politico: 40% Surge in Orders for New Ice Hardened Petroleum Transporters - Guest essay by Eric Worrall Politico reports that Finland’s Ship Building Industry is experiencing a bumper year, as Paris Climate Agreement signatories celebrate the new global environmental accord, by massively ramping up oil and gas exploration and mining in the Arctic. Finland finds global warming’s upside The country’s icebreaker business is booming as the shrinking…
  • Declassified files released of atomic relic of the Cold War: USS Independence (CVL-22) - Recently declassified documents on the USS Independence freely available online in the Journal of Maritime Archaeology The April issue of Springer’s Journal of Maritime Archaeology (JMA) focuses on a single shipwreck as the lens through which maritime archaeology assesses the advent of the Atomic Age and the Cold War. The wreck is the World War…
  • Claim: We should Print 100s of Billions of Dollars to Finance UN Climate Action - Guest essay by Eric Worrall Michael Metcalfe, a senior merchant banker who gave a TED Talk in 2014 campaigning for money to be printed on a vast scale, to fund global charities, now wants governments to print 100s of billions of dollars, to combat Climate Change. Can we print money for climate finance? Three years…
  • Tracking climate change? Use the daily highs - Above, examples from Las Vegas illustrate the issue, but aren’t part of the original paper. Source: NWS WSFO, Las Vegas. NV. HUNTSVILLE, Ala. (April 29, 2016) — Scientists using long-term surface temperature data to track climate change caused by greenhouse gases would be best served using only daily high temperature readings without the nighttime lows,…
  • Weird: Scientists discover oral sexual encounters in spiders - Normally, I would not carry a science story like this, but it is just so weird, it seemed worth noting. Those with arachnophobia need not read this. Matjaz Gregoric, a research associate at the Scientific Research Centre of the Slovenian Academy of Sciences and Arts (ZRC SAZU), Jovan Hadzi Institute of Biology, and coauthors studied…
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