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News Feeds

Real Climate

  • Boomerangs versus Javelins: The Impact of Polarization on Climate Change Communication - Guest commentary by Jack Zhou, Nicholas School of the Environment, Duke University For advocates of climate change action, communication on the issue has often meant “finding the right message” that will spur their audience to action and convince skeptics to change their minds. This is the notion that simply connecting climate change to the right […]
  • Unforced Variations: June 2016 - June already? Cripes… Usual rules apply.
  • Scientists getting organized to help readers sort fact from fiction in climate change media coverage - Guest post by Emmanuel Vincent While 2016 is on track to easily surpass 2015 as the warmest year on record, some headlines, in otherwise prestigious news outlets, are still claiming that “2015 Was Not Even Close To Hottest Year On Record” (Forbes, Jan 2016) or that the “Planet is not overheating…” (The Times of London, […]
  • Do regional climate models add value compared to global models? - Global climate models (GCM) are designed to simulate earth’s climate over the entire planet, but they have a limitation when it comes to describing local details due to heavy computational demands. There is a nice TED talk by Gavin that explains how climate models work. We need to apply downscaling to compute the local details. […]
  • AMOC slowdown: Connecting the dots - I want to revisit a fascinating study that recently came from (mainly) the Geophysical Fluid Dynamics Lab in Princeton. It looks at the response of the Atlantic Ocean circulation to global warming, in the highest model resolution that I have seen so far. That is in the CM2.6 coupled climate model, with 0.1° x 0.1° […]
  • Recycling Carbon? - Guest commentary by Tony Patt, ETH Zürich This morning I was doing my standard reading of the New York Times, which is generally on the good side with climate reporting, and saw the same old thing: an article about a potential solution, which just got the story wrong, at least incomplete. The particular article was […]
  • Comparing models to the satellite datasets - How should one make graphics that appropriately compare models and observations? There are basically two key points (explored in more depth here) – comparisons should be ‘like with like’, and different sources of uncertainty should be clear, whether uncertainties are related to ‘weather’ and/or structural uncertainty in either the observations or the models. There are […]
  • Unforced variations: May 2016 - This month’s open thread. Usual rules apply.
  • 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 […]

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

  • Close But No Cigar – NINO3.4 SST Anomalies Are a Tick (0.1 deg C) above La Niña Threshold - Guest Post by Bob Tisdale This is a quick ENSO update. NOAA’s weekly sea surface temperature anomaly data for the NINO regions (based on the original Reynolds OI.v2 data) are furnished on Mondays. Today’s update for the week centered on June 22, 2016 shows the sea surface temperature anomalies of the NINO3.4 region (5S-5N, 170W-120W),…
  • Hurricane Main Development Region of North Atlantic – Climate Model-Simulated Sea Surface Temperatures Are Too Cool - And Those Too-Cool Surface Temperatures Create Obvious Problems for Researchers Guest Post by Bob Tisdale The sea surface temperatures of the tropical North Atlantic are one of many factors that contribute to the development and maintenance of hurricanes. In fact, 26 deg C (about 79 deg F) is the sea surface temperature that’s typically quoted…
  • Weekly Climate and Energy News Roundup #230 - The Week That Was: 2016-06-25 (June 25, 2016) Brought to You by SEPP ( The Science and Environmental Policy Project THIS WEEK: By Ken Haapala, President, Science and Environmental Policy Project (SEPP) BREXIT: On June 23rd, the British voted 52% to 48% to exit the European Union. No doubt many political commentators were very surprised.…
  • The Tangled Web of Global Warming Activism - Guest Opinion: Dr. Tim Ball Sir Walter Scott (1771-1832) wrote, “Oh what a tangled web we weave, when first we practice to deceive!” There were several actions required to create the tangled web of deception relating to the claim that human-produced CO2 caused global warming. It involved creating smaller deceptions to control the narrative that…
  • USGS finds data fraud, closes environmental chemistry lab - Misconduct has led to delays and 1 retraction in environmental quality measurements reports By Jessica Morrison (E&CN) Alleged misconduct and data manipulation at a U.S. Geological Survey (USGS) laboratory may have affected thousands of environmental quality measurements processed between 2008 and 2014, according to the Interior Department’s Office of Inspector General (OIG). As many as 24…
  • Brexit: Greenpeace, FOE fears a “Bonfire” of Green Regulations - Guest essay by Eric Worrall Evidence is mounting that Brexit, and possible “contagion” of the British exit from the EU, the empowerment of nationalist movements throughout Europe demanding their own exit referenda, is the worst nightmare come true for green groups which had been counting on the bureaucratic authoritarianism of the European Union to bind…
  • Comparing the Kobashi and Alley Central Greenland Temperature Reconstructions - By Andy May In 2000, Richard Alley released an ice core temperature reconstruction for Central Greenland using Oxygen isotope ratios. He describes the technique used here. I used this ice core proxy data in a previous post “Climate and Civilization for the past 4,000 years.” Since Alley’s data stops at 1855, I spliced the Greenland…
  • Why did agriculture start 13,000 years ago? - WUWT reader Susan Corwin writes: Because it would work as CO2 became plentiful! All the academic articles say: “and then agriculture happened”. The “accepted wisdom”/consensus is: ….here was no single factor, or combination of factors, that led people to take up farming in different parts of the world. But It is simple: it occurred because…
  • Naomi Klein: Trying to link Climate and Racism - Guest essay by Eric Worrall Naomi Klein has attempted to link climate, fossil fuels and racism, but in my opinion Naomi’s piece inadvertently embraces the ugly colonialist paternalism which she tries to insist we should reject. Naomi Klein on the racism that underlies climate change inaction … For the past three decades, since the Intergovernmental…
  • Interesting: California Hitting New Heights with Renewables in 2016 - Many WUWT might think that renewable energy just can’t cut it, and when it comes to certain demand situations that may be a very valid issue. However, there has been quite a surge in installed renewables for daytime generation in California over the last 6 years, and the numbers from CAISO do tell a story…
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