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The need for pluralism in climate modelling

24 Aug 2024 by group

How should we allocate resources for climate modelling if the goal is to improve climate-related decisions? Higher resolution, machine learning and/or storylines? A call for a deeper discussion on how we should develop the climate modelling toolbox.

Guest post by Marina Baldissera Pacchetti, Julie Jebeile and Erica Thompson

[Read more…] about The need for pluralism in climate modelling

Filed Under: Climate modelling, Climate Science, climate services, Solutions Tagged With: CMIP6, GCMs, km-scale, Machine Learning

Unforced variations: Aug 2024

1 Aug 2024 by group

This month’s open thread on climate topics.

Filed Under: Climate Science, Open thread, Solutions

Unforced variations: July 2024

30 Jun 2024 by group

This month’s open thread on climate science topics.

Filed Under: Climate Science, Open thread, Solutions

Unforced variations: June 2024

1 Jun 2024 by group

This month’s open thread on climate topics. Please stay focused, minimize repetitive comments, and maintain a half-way decent level of decorum. Thanks!

Filed Under: Climate Science, Open thread, Solutions

New journal: Nature 2023?

11 May 2024 by Gavin

[Last update Dec 6, 2024] There were a number of media reports today [May 11, 2024] related to Yuan et al. (2024), for instance, New Scientist, The Guardian etc. However, this is really just the beginning of what is likely to be a bit of a cottage industry in the next few months relating to possible causes/influences on the extreme temperatures seen in 2023. So to help people keep track, we’ll maintain a list here to focus discussions. Additionally, we’ll extract out the key results (such as the reported radiative forcing) as a guide to how this will all eventually get reconciled.

[Read more…] about New journal: Nature 2023?

References

  1. T. Yuan, H. Song, L. Oreopoulos, R. Wood, H. Bian, K. Breen, M. Chin, H. Yu, D. Barahona, K. Meyer, and S. Platnick, "Abrupt reduction in shipping emission as an inadvertent geoengineering termination shock produces substantial radiative warming", Communications Earth & Environment, vol. 5, 2024. http://dx.doi.org/10.1038/s43247-024-01442-3

Filed Under: Aerosols, Climate modelling, Climate Science, El Nino, Featured Story, Instrumental Record, Oceans, Sun-earth connections Tagged With: 2023, marine shipping

Unforced Variations: May 2024

30 Apr 2024 by group

This month’s open thread on climate topics. Many eyes will be focused on whether April temperatures will be the 11th month in row of records…

Note that we have updated the data and figures from the Nenana Ice Classic and Dawson City river ice break up pools (the nominal 13th and 5th earliest break-ups (or 15th and 4th, w.r.t. to the vernal equinox) in their respective records)).

And a quick note about moderation: If your comment is a personal attack on another commenter instead of a substantive argument, it will just be deleted. As will your subsequent complaints. Ain’t nobody got time for that.

Filed Under: Climate Science, Open thread, Solutions

Much ado about acceleration

4 Apr 2024 by Gavin

There has been a lot of commentary about perceived disagreements among climate scientists about whether climate change is (or will soon be) accelerating. As with most punditry, there is less here than it might seem.

[Read more…] about Much ado about acceleration

Filed Under: Climate modelling, Climate Science, El Nino, Featured Story, Greenhouse gases, Hurricanes, Instrumental Record, IPCC Tagged With: acceleration, climate change, CMIP6

Unforced variations: Apr 2024

1 Apr 2024 by group

This month’s open thread on climate topics. Lots more discussion about 2023, aerosols, heat content and imbalances to come I expect…

Note, comments should be substantive even if you are arguing with who you perceive to be the worst person in the world. Comments that are mainly personal attacks will just get deleted.

Filed Under: Climate Science, Open thread, Solutions

More solar shenanigans*

7 Mar 2024 by Gavin

Going back a few months, I spent a bit of time pointing out the strategy and nonsense in the various Willie Soon and company’s efforts to blame current warming on solar activity. I specifically pointed out their cultish devotion to a single solar activity reconstruction (Hoyt and Schatten, 1993) (HS93); with an update from Scaffeta (2023), and their increasingly elaborate efforts to create temperature series that correlate to it.

Well, Theodosios Chatzistergos has just published a deep dive into the HS93 reconstruction (Chatzistergos, 2024) (C24) and… let’s say the results will not be surprising to regular readers.

[Read more…] about More solar shenanigans*

References

  1. D.V. Hoyt, and K.H. Schatten, "A discussion of plausible solar irradiance variations, 1700‐1992", Journal of Geophysical Research: Space Physics, vol. 98, pp. 18895-18906, 1993. http://dx.doi.org/10.1029/93JA01944
  2. N. Scafetta, "Empirical assessment of the role of the Sun in climate change using balanced multi-proxy solar records", Geoscience Frontiers, vol. 14, pp. 101650, 2023. http://dx.doi.org/10.1016/j.gsf.2023.101650
  3. T. Chatzistergos, "A Discussion of Implausible Total Solar-Irradiance Variations Since 1700", Solar Physics, vol. 299, 2024. http://dx.doi.org/10.1007/s11207-024-02262-6

Filed Under: Climate modelling, Climate Science, Featured Story, Instrumental Record, Paleoclimate, Sun-earth connections Tagged With: Willie Soon

Unforced variations: March 2024

2 Mar 2024 by group

The month’s open thread on climate topics. More record monthly warmth, but only the second lowest Antarctic sea ice though (growing since 2023!).

Filed Under: Climate Science, Open thread, Solutions

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