|Filed Under:||Issues & Causes / Climate Change|
|Posts on Regator:||310|
|Posts / Week:||0.8|
|Archived Since:||November 10, 2008|
XKCD, the brilliant and hilarious on-line comic, attempts to answer the question How much CO2 is contained in the world’s stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels? The answer is, enough to cover the Earth with 10 layers of soda cans. However, the […]
I’m writing this post to see if our audience can help out with a challenge: Can we collectively produce some coherent, properly referenced, open-source, scalable graphics of global temperature history that will be accessible and clear enough that we can effectively out-compete the myriad inaccurate and misleading pictures that continually do the rounds on social […]
I am always interested in non-traditional data sets that can shed some light on climate changes. Ones that I’ve discussed previously are the frequency of closing of the Thames Barrier and the number of vineyards in England. With the exceptional warmth in Alaska last month (which of course was coupled with colder temperatures elsewhere), I [...]
Guest commentary from Zeke Hausfather and Robert Rohde Daily temperature data is an important tool to help measure changes in extremes like heat waves and cold spells. To date, only raw quality controlled (but not homogenized) daily temperature data has been available through GHCN-Daily and similar sources. Using this data is problematic when looking at [...]
There has been a veritable deluge of new papers this month related to recent trends in surface temperature. There are analyses of the CMIP5 ensemble, new model runs, analyses of complementary observational data, attempts at reconciliation all the way to commentaries on how the topic has been covered in the media and on twitter. We [...]
This month’s open thread.
A new paper in Nature Climate Change out this week by England and others joins a number of other recent papers seeking to understand the climate dynamics that have led to the so-called “slowdown” in global warming. As we and others have pointed out previously (e.g. here), the fact that global average temperatures can deviate [...]
A little late starting this month’s open thread – must be the weather…
Guest commentary by Tim Osborn and Phil Jones The Climatic Research Unit (CRU) land surface air temperature data set, CRUTEM4, can now be explored using Google Earth. Access is via this portal together with instructions for using it (though it is quite intuitive). We have published a short paper in Earth System Science Data to [...]
Along with David’s online class a number of new climate science MOOCs are now coming online. A new online course from MIT, “Global Warming Science”, introduces the basic science underpinning our knowledge of the climate system, how climate has changed in the past, and how it may change in the future. The course focuses on [...]
The global temperature data for 2013 are now published. 2010 and 2005 remain the warmest years since records began in the 19th Century. 1998 ranks third in two records, and in the analysis of Cowtan & Way, which interpolates the data-poor region in the Arctic with a better method, 2013 is warmer than 1998 (even [...]
Gavin provided a thoughtful commentary about the role of scientists as advocates in his RealClimate piece a few weeks ago. I have weighed in with my own views on the matter in my op-ed today in this Sunday’s New York Times. And, as with Gavin, my own views have been greatly influenced and shaped by [...]
Back in 2007 I wrote a post looking at the closures of the Thames Barrier since construction finished in 1983. Since then there has been another 7 years of data and given that there was a spate of closures last week due to both river and tidal flooding, it seems a good time to revisit [...]
by Michael E. Mann and Gavin Schmidt This time last year we gave an overview of what different methods of assessing climate sensitivity were giving in the most recent analyses. We discussed the three general methods that can be used: The first is to focus on a time in the past when the climate was [...]
First open thread of the new year. A time for ‘best of’s of climate science last year and previews for the this year perhaps? We will have an assessment of the updates to annual indices and model/data comparisons later in the month.
We have often discussed issues related to science communication on this site, and the comment threads frequently return to the issue of advocacy, the role of scientists and the notion of responsibility. Some videos from the recent AGU meeting are starting to be uploaded to the AGU Youtube channel and, oddly, the first video of [...]
Since 1998 the global temperature has risen more slowly than before. Given the many explanations for colder temperatures discussed in the media and scientific literature (La Niña, heat uptake of the oceans, arctic data gap, etc.) one could jokingly ask why no new ice age is here yet. This fails to recognize, however, that the [...]
So, it’s that time of year again. Fall AGU is the largest Earth Science conference on the planet, and is where you will get previews of new science results, get a sense of what other experts think about current topics, and indulge in the more social side of being a scientist. The full scientific program [...]
I was disappointed by the recent summary for policymakers (SPM) of the intergovernmental panel on climate change (IPCC) assessment report 5, now that I finally got around to read it. Not so much because of the science, but because the way it presented the science. The report was written by top scientists, so what went [...]
This month’s open thread. It’s coming to the end of the year and that means updates to the annual time series of observations and models relatively soon. Suggestions for what you’d like to see assessed are welcome… or any other climate science related topic.