Climate and Environment News Feeds
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RealClimate
8th May 2008 > Global Cooling-Wanna Bet?
By Stefan Rahmstorf, Michael Mann, Ray Bradley, William Connolley, David Archer, and Caspar Ammann
Global cooling appears to be the ?flavour of the month?. First, a rather misguided media discussion erupted on whether global warming had stopped, based on the observed temperatures of the past 8 years or so (see our post). Now, an entirely new [...]
30th Apr 2008 > Back to the future
A few weeks ago I was at a meeting in Cambridge that discussed how (or whether) paleo-climate information can reduce the known uncertainties in future climate simulations.
The uncertainties in the impacts of rising greenhouse gases on multiple systems are significant: the potential impact on ENSO or the overturning circulation in the North Atlantic, probable feedbacks [...]
23rd Apr 2008 > Butterflies, tornadoes and climate modelling
Many of you will have seen the obituaries (MIT, NYT) for Ed Lorenz, who died a short time ago. Lorenz is most famous scientifically for discovering the exquisite sensitivity to initial conditions (i.e. chaos) in a simple model of fluid convection, which serves as an archetype for the weather prediction problem. He is most [...]
22nd Apr 2008 > Impressions from the European Geophysical Union conference 2008
Last week, the European Geophysical Union held its annual general assembly, with thousands of geophysicists converging on the city of Vienna, Austria. It was time to take the pulse of the geophysical community.
When registering at the conference, we got a packet called 'Planet Earth; Directions for Use'. As far as I know, this is [...]
18th Apr 2008 > Moulins, Calving Fronts and Greenland Outlet Glacier Acceleration
Guest Commentary by Mauri Pelto
The net loss in volume and hence sea level contribution of the Greenland Ice Sheet (GIS) has doubled in recent years from 90 to 220 cubic kilometers/year has been noted recently (Rignot and Kanagaratnam, 2007). The main cause of this increase is the acceleration of several large outlet glaciers. [...]
10th Apr 2008 > Model-data-comparison, Lesson 2
In January, we presented Lesson 1 in model-data comparison: if you are comparing noisy data to a model trend, make sure you have enough data for them to show a statistically significant trend. This was in response to a graph by Roger Pielke Jr. presented in the New York Times Tierney Lab Blog that compared [...]
7th Apr 2008 > Target CO2
What is the long term sensitivity to increasing CO2? What, indeed, does long term sensitivity even mean? Jim Hansen and some colleagues (not including me) have a preprint available that claims that it is around 6ºC based on paleo-climate evidence. Since that is significantly larger than the 'standard' climate sensitivity we've often talked about, it's [...]
3rd Apr 2008 > Blogs and peer-review
Nature Geoscience has two commentaries this month on science blogging - one from me and another from Myles Allen (see also these blog posts on the subject). My piece tries to make the point that most of what scientists know is "tacit" (i.e. not explicitly or often written down in the technical literature) and it [...]
30th Mar 2008 > Air Capture
Guest Commentary by Frank Zeman
[This is one of an occasional series on the science of mitigation/adaptation/geo-engineering that we hope to continue. Since this isn't our core expertise, we'd especially appreciate balanced contributions from other scientists.]
One of the central challenges of controlling anthropogenic climate change is developing technologies that deal with emissions from small, dispersed [...]
17th Mar 2008 > Venus Unveiled
Something over a week ago I had the pleasure of making my way up to the little ski resort of La Thuile in the Val D'Aosta to learn about the latest results from the Venus Express mission. (You can imagine it was a tough decision to go to La Thuile and hear real [...]
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