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Climate impacts

Scenarios, schmenarios…

20 May 2026 by Gavin 35 Comments

The fantasy version of the normal updating of scenarios for a new round of CMIP simulations doing the rounds is bad faith BS.

[Read more…] about Scenarios, schmenarios…

Filed Under: Aerosols, Climate impacts, Climate modelling, Climate Science, Featured Story, Greenhouse gases, In the News, IPCC, Reporting on climate, Scientific practice Tagged With: CMIP6, CMIP7, projections, RCP85, SSP585

Who should pay?

30 Nov 2025 by Gavin

Climate risk scores on real estate listings are having an impact on prices and realtors are complaining. But who should pay for these losses?

[Read more…] about Who should pay?

Filed Under: Climate impacts, Climate Science, climate services, downscaling, Featured Story Tagged With: extreme weather, First Street

Lil’ NAS Express

17 Sep 2025 by group

The fast-tracked update of the 2009 EPA Endangerment finding from the National Academies for Science, Engineering and Medicine (NASEM), has now been released.

[Read more…] about Lil’ NAS Express

Filed Under: Climate impacts, Climate Science, Featured Story, Greenhouse gases, In the News, Instrumental Record Tagged With: DOE, Endangerment Finding

DOE CWG Report “Moot”?

10 Sep 2025 by Gavin

Somewhat breaking news. A court filing (from 9/4) from DOE has noted that the Climate Working Group has been disbanded (as of 9/3). This was done to make the EDF/UCS lawsuit moot, but it also means that DOE is withdrawing the report, no-one will respond appropriately to the comments submitted, and (possibly) it becomes irrelevant for the EPA reconsideration of the Endangerment Finding.

What a farce.

Update: Via Andy Revkin, the EDF/UCS’s blistering response to the DOE filing. Pass the popcorn.

Filed Under: Climate impacts, Climate modelling, Climate Science, Featured Story, Instrumental Record, IPCC, Model-Obs Comparisons, Scientific practice

Climate Scientists response to DOE report

2 Sep 2025 by Gavin

As we’ve mentioned, Andrew Dessler and Robert Kopp have been coordinating a scientific peer review of the DOW ‘CWG’ Critique of Climate Science. It is now out.

[Read more…] about Climate Scientists response to DOE report

Filed Under: Arctic and Antarctic, Carbon cycle, Climate impacts, Climate modelling, Climate Science, Featured Story, Greenhouse gases, Hurricanes, Instrumental Record, IPCC, Model-Obs Comparisons, Scientific practice, Sea level rise, Sun-earth connections Tagged With: CWG, DOE, Endangerment Finding

Critiques of the ‘Critical Review’

14 Aug 2025 by group

The first somewhat comprehensive reviews of the DOE critical review are now coming online.

[Read more…] about Critiques of the ‘Critical Review’

Filed Under: Climate impacts, Climate modelling, Climate Science, Communicating Climate, Featured Story, Greenhouse gases, In the News, Instrumental Record, Model-Obs Comparisons, Reporting on climate, skeptics Tagged With: climate change, DOE, Endangerment Finding, EPA

Are direct water vapor emissions endangering anyone?

31 Jul 2025 by group

In the EPA EF reconsideration document there is a section on p62 where they attempt to make the argument that the CO2 endangerment finding would also apply to direct water vapor emissions to the atmosphere, which is (according to them) obviously absurd. But both claims are bogus.

[Read more…] about Are direct water vapor emissions endangering anyone?

Filed Under: Aerosols, Carbon cycle, Climate impacts, Climate Science, Featured Story, Greenhouse gases, hydrological cycle, In the News Tagged With: Endangerment Finding, EPA, Water vapor

The Endangerment of the Endangerment Finding?

29 Jul 2025 by group

The EPA, along with the “Climate Working Group” (CWG) of usual suspects (plus Judith Curry and Ross McKitrick) at DOE, have just put out a document for public comment their attempt to rescind the 2009 Endangerment Finding for greenhouse gas emissions.

[Read more…] about The Endangerment of the Endangerment Finding?

Filed Under: Climate impacts, Climate modelling, Climate Science, Featured Story, Greenhouse gases, In the News, Instrumental Record, IPCC, Model-Obs Comparisons, Reporting on climate Tagged With: DOE, Endangerment Finding, EPA

National Climate Assessment links

21 Jul 2025 by group

For some reason, it has become hard to locate the various National Climate Assessments (NCAs) that have been produced by the USGCRP over the decades (and it’s pretty hard to find the USGRCP as well…). However, the reports are still accessible if you know where to look. So for future reference, here are all the links (and we’ve downloaded the pdfs locally so that they will always be available here).

NCA1 (2000)

  • Full report (via the internet archive) (via gov archive) (local pdf)

NCA2 (2009)

  • Full report (via the internet archive) (via gov archive) (local pdf)

NCA3 (2014)

  • Full Report (via the NOAA library) (local pdf)
  • Climate Science Supplement (via the internet archive) (local pdf)

NCA4 (2017)

  • Volume 1 Climate Science Special Report (via the NOAA library) (local pdf)
  • Volume 2 Impacts, Risks, and Adaptation in the United States (via the NOAA Library) (local pdf)

NCA5 (2023)

  • The NCA5 Atlas (via ESRI)
  • Full report (via the NOAA Library) (local pdf)

NCA6

There is no ongoing NCA6 process, even though it is mandated by Congress to be completed over the next few years. We’ll let you know if that changes.

Filed Under: Climate impacts, Climate Science, climate services, In the News Tagged With: National Climate Assessment, NCA, USGCRP

The most recent climate status

12 May 2025 by rasmus

Fjords and mountains in Northern Norway
Fjords and mountains in Northern Norway

The Arctic Council’s Arctic Monitoring and assessment Programme (AMAP) recently released a Summary for PolicyMakers’ Arctic Climate Change Update 2024. 

[Read more…] about The most recent climate status

Filed Under: Arctic and Antarctic, Climate impacts, Climate Science, Featured Story, Reporting on climate

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