Projecting regional change

Techniques to downscale global climate model (GCM) output and produce high-resolution climate change projections have emerged over the past two decades. GCM projections of future climate change, with typical resolutions of about 100 km, are now routinely downscaled to resolutions as high as hundreds...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2014-12, Vol.346 (6216), p.1461-1462
Main Author: Hall, Alex
Format: Article
Language:English
Subjects:
Atmospheric circulation
Atmospheric models
Best practice
Circulation
Climate
Climate change
Communities
Global climate models
Measuring instruments
Meteorology
Projection
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Summary:Techniques to downscale global climate model (GCM) output and produce high-resolution climate change projections have emerged over the past two decades. GCM projections of future climate change, with typical resolutions of about 100 km, are now routinely downscaled to resolutions as high as hundreds of meters. Pressure to use these techniques to produce policy-relevant information is enormous. To prevent bad decisions, the climate science community must identify downscaling's strengths and limitations and develop best practices. A starting point for this discussion is to acknowledge that downscaled climate signals arising from warming are more credible than those arising from circulation changes.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aaa0629