We add some of the CMIP6 models to the updateable MSU [and SST] comparisons. After my annual update, I was pointed to some MSU-related diagnostics for many of the CMIP6 models (24 of them at least) from courtesy of Ben Santer. These are slightly different to what we have shown for CMIP5 in that the diagnostic is the tropical corrected-TMT (following ) which is a better representation of the … Read Full Article about Some new CMIP6 MSU comparisons
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How not to science
A trip down memory lane and a lesson on scientific integrity. I had reason to be reviewing the history of MSU satellite retrievals for atmospheric temperatures recently. It's a fascinating story of technology, creativity, hubris, error, imagination, rivalry, politics, and (for some) a search for scientific consilience - worthy of movie script perhaps? - but I want to highlight a minor little … Read Full Article about How not to science
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Serious mistakes found in recent paper by Connolly et al.
Guest post by Mark Richardson who is a Research Scientist in the Aerosol and Clouds Group at NASA’s Jet Propulsion Laboratory, California Institute of Technology. All opinions expressed are his own and do not in any way represent those of NASA, JPL or Caltech. Should scientists choose to believe … Read Full Article about Serious mistakes found in recent paper by Connolly et al.
New misguided interpretations of the greenhouse effect from William Kininmonth
I have a feeling that we are seeing the start of a new wave of climate change denial and misrepresentation of science. At the same time, CEOs of gas and oil companies express optimism for further exploitation of fossil energy in the wake of Russia’s invasion of Ukraine, at least here in … Read Full Article about New misguided interpretations of the greenhouse effect from William Kininmonth
Unforced variations: March 2023
This month's open thread. Antarctic sea ice anyone? … Read Full Article about Unforced variations: March 2023
The established ground and new ideas
Science is naturally conservative and the scepticism to new ideas ensures high scientific quality. We have more confidence when different scholars arrive at the same conclusion independently of each other. But scientific research also brings about discoveries and innovations, and it typically takes … Read Full Article about The established ground and new ideas
2022 updates to model-observation comparisons
Our annual post related to the comparisons between long standing records and climate models. As frequent readers will know, we maintain a page of comparisons between climate model projections and the relevant observational records, and since they are mostly for the global mean numbers, these get … Read Full Article about 2022 updates to model-observation comparisons
Unforced variations: Feb 2023
This month's open thread for climate related topics. Please be constructive, polite, and succinct. … Read Full Article about Unforced variations: Feb 2023
2022 updates to the temperature records
Another January, another annual data point. As in years past, the annual rollout of the GISTEMP, NOAA, HadCRUT and Berkeley Earth analyses of the surface temperature record have brought forth many stories about the long term trends and specific events of 2022 - mostly focused on the impacts of … Read Full Article about 2022 updates to the temperature records
Unforced variations: Jan 2023
Starting a little slowly this new year, but here is this month's open thread. Look out for various updates of the annual 2022 numbers over the next week or so... … Read Full Article about Unforced variations: Jan 2023
The water south of Greenland has been cooling, so what causes that?
Let’s compare two possibilities by a back-of-envelope calculation. (1) Is it due to a reduced heat transport of the Atlantic Meridional Overturning Circulation (AMOC)? (2) Or is it simply due to the influx of cold meltwater as the Greenland Ice Sheet is losing ice? The latter is often … Read Full Article about The water south of Greenland has been cooling, so what causes that?
Unforced variations: Dec 2022
This month's open thread for climate discussions. Please be constructive and polite. … Read Full Article about Unforced variations: Dec 2022
Unforced variations: Nov 2022
This month's open thread. Anyone read Greta Thunberg's book? or have an opinion about soup? Be substantive, be polite, be talking about climate. … Read Full Article about Unforced variations: Nov 2022