Monthly Archives: January 2006

More on Urban Temperatures

A very interesting NASA study has been reported entitled Keeping New York City “Cool” is the Job of NASA’s “Heat Seekers” Thus study illustrates that the González et al tropical study that was discussed on the weblog on January 29th, … Continue reading

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More Evidence for the Diversity of Climate Forcings by Aerosols

A very important research paper has appeared with respect to the effect of aerosols within the climate system. The paper by A. Khain , D. Rosenfeld, and A. Pokrovsky entitled “Aerosol impact on the dynamics and microphysics of deep convective … Continue reading

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Do Urban Areas have Larger Long term Temperature Trends than Other Locations?

A paper that appeared in EOS in October 2005 (subscription required) entitled “Urban Heat Islands Developing in Coastal Tropical Cities” by González et al is very relevant to the subject of long term surface temperature trend analyses such as reported … Continue reading

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Climate Model Problems in Representing Near-Surface Temperatures at Night

An article in the November 1, 2005 Integrated Land Ecosystem-Atmosphere Processes Study (iLEAPS) Newsletter by Professor Bert Holtslag of Wageningen University in the Netherlands entitled “Stable boundary layers and land surface climateâ€? summarizes serious difficulties in the accurate representation of … Continue reading

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Why there is a Warm Bias in the Existing Analyses of the Global Average Surface Temperature

Readers of this weblog know that there have been comments on the warm bias that we have identified, as reported in Matsui and Pielke, GRL, 2005, with respect to the global analysis of surface temperature trends. This is an important … Continue reading

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The Need to Better Assess Uncertainty in Climate Models

The November 2005 issue of GEWEX News (GEWEX is the Global Energy and Water Cycle Experiment) has an excellent article by T. Palmer of the ECMWF entitled “Ensemble Weather and Climate Predictionâ€?. His article states “the representation of model uncertainty … Continue reading

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Effect on Surface Temperature Trends Due to Local Human Alteration of the Landscape

A new paper by John Christy, William Norris, Kelly Redmond and Kevin Gallo, in press with the Journal of Climate, entitled “Methodology and Results of Calculating Central California Surface Temperature Trends: Evidence of a Human-Induced Climate Change” offers important new … Continue reading

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Where are the Newly Recognized Uncertainties Assessed in the 2005 GISS Surface Temperature Record?

Jim Hansen has reported on the GISS temperature analysis for 2005. The GISS summary stated, “The highest global surface temperature in more than a century of instrumental data was recorded in the 2005 calendar year in the GISS annual analysis. … Continue reading

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Land Ecosystem – Atmosphere Processes Conference

From Saturday January 21 though Thursday January 26, 2006 the Integrated Land Ecosystem – Atmosphere Processes Study (iLEAPs) has an international meeting in Boulder, Colorado USA. The meeting schedule and list of talks is available. This meeting highlights the latest … Continue reading

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Is the Report Linking the Extinction of Frogs with Global Warming a Scientifically Balanced Conclusion?

I read the media reports linking global warming to the extinction of frogs with considerable skepticism. (e.g. in the Washington Post). I was even more surprised when I read the first author’s comments on the Nature paper that the media … Continue reading

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