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Climate Science

How good have climate models been at truly predicting the future?

4 Dec 2019 by Gavin

A new paper from Hausfather and colleagues (incl. me) has just been published with the most comprehensive assessment of climate model projections since the 1970s. Bottom line? Once you correct for small errors in the projected forcings, they did remarkably well.

[Read more…] about How good have climate models been at truly predicting the future?

Filed Under: Climate modelling, Climate Science, Greenhouse gases, Instrumental Record, Model-Obs Comparisons, statistics

Unforced variations: Dec 2019

1 Dec 2019 by group

This month’s open thread. December already?

Filed Under: Climate Science, Open thread

10 years on

17 Nov 2019 by Gavin

I woke up on Tuesday, 17 Nov 2009 completely unaware of what was about to unfold. I tried to log in to RealClimate, but for some reason my login did not work. Neither did the admin login. I logged in to the back-end via ssh, only to be inexplicably logged out again. I did it again. No dice. I then called the hosting company and told them to take us offline until I could see what was going on. When I did get control back from the hacker (and hacker it was), there was a large uploaded file on our server, and a draft post ready to go announcing the theft of the CRU emails. And so it began.

From “One year later”, 2010.

Many people are weighing in on the 10 year anniversary of ‘Climategate’ – the Observer, a documentary on BBC4 (where I was interviewed), Mike at Newsweek – but I’ve struggled to think of something actually interesting to say.

It’s hard because even in ten years almost everything and yet nothing has changed. The social media landscape has changed beyond recognition but yet the fever swamps of dueling blogs and comment threads has just been replaced by troll farms and noise-generating disinformation machines on Facebook and Twitter. The nominally serious ‘issues’ touched on by the email theft – how robust are estimates of global temperature over the instrumental period, what does the proxy record show etc. – have all been settled in favor of the mainstream by scientists plodding along in normal science mode, incrementally improving the analyses, and yet they are still the most repeated denier talking points.

[Read more…] about 10 years on

Filed Under: Climate Science, Instrumental Record, Paleoclimate, Scientific practice

Sensitive But Unclassified

6 Nov 2019 by Gavin

The US federal government goes to quite a lot of effort to (mostly successfully) keep sensitive but unclassified (SBU) information (like personal data) out of the hands of people who would abuse it. But when it comes to the latest climate models, quite a few are SBU as well.

[Read more…] about Sensitive But Unclassified

Filed Under: Climate modelling, Climate Science, Communicating Climate, Instrumental Record, IPCC

Unforced variations: Nov 2019

1 Nov 2019 by group

This month’s open thread.

Filed Under: Climate Science, Open thread

Do you want to share your views on climate change and reading blogs?

21 Oct 2019 by rasmus

A survey is being conducted by researchers of Cambridge University and Wageningen University. They have asked us to post information about it. Please share your views on climate change and reading blogs by filling out this survey. The data will be used to get a better understanding of climate change blog audiences’ views on climate change and their blog reading behavior.

What’s in it for you?

  • You have a chance on winning a $20 gift card of Amazon;
  • You will get a sneak preview of the preliminary results;
  • You will contribute to research on climate change blogs.

Participation is anonymous, and your answers will be handled confidentially. The data is only used for research purposes.

The Cambridge University and Wageningen University team highly value your input. Please fill out the survey by following this link.

Update (22 Dec 2020): The paper describing the results of this survey has now been published (van Eck et al., 2020).

References

  1. C.W. van Eck, B.C. Mulder, and S. van der Linden, "Echo Chamber Effects in the Climate Change Blogosphere", Environmental Communication, vol. 15, pp. 145-152, 2020. http://dx.doi.org/10.1080/17524032.2020.1861048

Filed Under: Climate Science

More than 500 people misunderstand climate change

16 Oct 2019 by rasmus

A consensus is usually established when one explanation is more convincing than alternative accounts, convincing the majority. This is also true in science. However, science-based knowledge is also our best description of our world because it is built on testing hypotheses that are independently reexamined by colleagues.

[Read more…] about More than 500 people misunderstand climate change

Filed Under: Climate Science

Forced responses: Oct 2019

1 Oct 2019 by group

Bi-monthly open thread on climate solutions. Please try to be civil. Remember, climate science questions can be discussed on the Unforced Variations thread.

Filed Under: Climate Science, Open thread, Solutions

Unforced Variations: Oct 2019

1 Oct 2019 by group

This month’s open thread. Please try to stick to climate science topics.

Filed Under: Climate Science, Open thread

Unforced variations: Sep 2019

1 Sep 2019 by group

This month’s open thread for climate science topics. A new two-part community assessment of tropical storms and climate change is online at BAMS: Knutson et al. (2019a ; 2019b). And for those interested in Arctic Sea Ice, there is always the NSIDC.

References

  1. T. Knutson, S.J. Camargo, J.C.L. Chan, K. Emanuel, C. Ho, J. Kossin, M. Mohapatra, M. Satoh, M. Sugi, K. Walsh, and L. Wu, "Tropical Cyclones and Climate Change Assessment: Part I: Detection and Attribution", Bulletin of the American Meteorological Society, vol. 100, pp. 1987-2007, 2019. http://dx.doi.org/10.1175/BAMS-D-18-0189.1
  2. T. Knutson, S.J. Camargo, J.C.L. Chan, K. Emanuel, C. Ho, J. Kossin, M. Mohapatra, M. Satoh, M. Sugi, K. Walsh, and L. Wu, "Tropical Cyclones and Climate Change Assessment: Part II: Projected Response to Anthropogenic Warming", Bulletin of the American Meteorological Society, vol. 101, pp. E303-E322, 2020. http://dx.doi.org/10.1175/BAMS-D-18-0194.1

Filed Under: Climate Science, Open thread

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