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Blog Profile / RealClimate

Filed Under:Issues & Causes / Climate Change
Posts on Regator:466
Posts / Week:1.5
Archived Since:November 10, 2008

Blog Post Archive

The answer is blowing in the wind: The warming went into the deep end

There has been an unusual surge of interest in the climate sensitivity based on the last decade’s worth of temperature measurements, and a lengthy story in the Economist tries to argue that the climate sensitivity may be lower than previously estimated. I think its conclusion is somewhat misguided because it missed some important pieces of [...]

The PAGES-2k synthesis

Guest commentary by Darrell Kaufman (N. Arizona U.) In a major step forward in proxy data synthesis, the PAst Global Changes (PAGES) 2k Consortium has just a suite of continental scale reconstructions of temperature for the past two millennia in Nature Geoscience. More information about the study and its implications are available at the FAQ [...]

Ice hockey

Eric Steig It is well known that ice shelves on the Antarctic Peninsula have collapsed on several occasions in the last couple of decades, that ice shelves in West Antarctica are thinning rapidly, and that the large outlet glaciers that drain the West Antarctic ice sheet (WAIS) are accelerating. The rapid drainage of the WAIS [...]

Verification of regional model trends

Guest post by Geert Jan van Oldenborgh, Francisco Doblas-Reyes, Sybren Drijfhout and Ed Hawkins Climate information for the future is usually presented in the form of scenarios: plausible and consistent descriptions of future climate without probability information. This suffices for many purposes, but for the near term, say up to 2050, scenarios of emissions of [...]

Thin Ice — the movie

Some of my friends have made a film, Thin Ice, which tells the story of CO2 and climate from the standpoint of the climate scientists who are out there in the trenches trying to figure out what is going on. I have a small role in the film myself, and I am sure RealClimate readers [...]

Should regional climate models take the blame?

recently provided a critical review of regional climate models (“RCMs”). I think his views has caused a stir in the regional climate model community. So what’s the fuzz all about? RCMs provide important input to many climate services, for which there is a great deal of vested interest on all levels. On the international stage, [...]

Movie review: SWITCH

This year, the Geological Society of America is rolling out their SWITCH Energy Awareness campaign. The centerpiece of the campaign is a documentary film, SWITCH, which purports to be about the need for a transformation in the world’s energy systems. Recently, I attended the Chicago premier of the film, presented as part of the [...]

Response by Marcott et al.

Readers will be aware of the paper by Shaun Marcott and colleagues, that they published a couple weeks ago in the journal Science. That paper sought to extend the global temperature record back over the entire Holocene period, i.e. just over 11 kyr back time, something that had not really been attempted before. The paper [...]

Climate change and consequences on the groud

The link between extreme weather events, climate change, and national security is discussed in Extreme Realities, a new episode in PBS’ series Journey To Planet Earth hosted by Matt Damon. The video features a number of extreme weather phenomena: hurricanes, tornadoes, floods, wild fires, and flooding. The discussion is about climate change and the consequences [...]

Unforced Variations: March 2013

A new open thread – hopefully for some new climate science topics…

Urban Heat Islands and U.S. Temperature Trends

US temperature trends are not rising because of Urban Heat Island effects. New research using multiple datasets from Zeke Hausfather and other bloggers in collaboration with NCDC scientists.

2012 Updates to model-observation comparions

Time for the 2012 updates! As has become a habit (2009, 2010, 2011), here is a brief overview and update of some of the most discussed model/observation comparisons, updated to include 2012. I include comparisons of surface temperatures, sea ice and ocean heat content to the CMIP3 and Hansen et al (1988) simulations. First, a [...]

The Greenland melt

Last July (2012), I heard from a colleagues working at the edge of the Greenland ice sheet, and from another colleague working up at the Summit. Both were independently writing to report the exceptional conditions they were witnessing. The first was that the bridge over the Watson river by the town of Kangerlussuaq, on the [...]

What to study?

I recently got an email from newly graduated Math(s) major (mildly edited): I am someone with a deep-seated desire to help the planet remain as habitable as possible in the face of the trials humanity is putting it through. I’d like to devote my career to this cause, but am young and haven’t chosen a [...]

Sea-level rise: Where we stand at the start of 2013 — Part 2

This is Part 2 of my thoughts on the state of sea-level research. Here is Part 1. Sea-level cycles? A topic that keeps coming up in the literature is the discussion on a (roughly) 60-year cycle in sea level data; a nice recent paper on this is. One thing I like about this paper [...]

Sea-level rise: Where we stand at the start of 2013

Progress has been made in recent years in understanding the observed past sea-level rise. As a result, process-based projections of future sea-level rise have become dramatically higher and are now closer to semi-empirical projections. Show More Summary

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