Global models of the climate system are now the foundation for many important climate studies, but they typically show climate changes at very large geographic scales on the order of 100 to 250 kilometers. Some data sets have scaled that down to about 10 kilometers, but even these make it difficult to analyze climate change impacts on a local or regional scale.
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To generate these high-resolution climate projections, researchers used an innovative scientific collaboration platform called the NASA Earth Exchange (NEX), at NASA’s Ames Research Center in Moffett Field, CA.
These climate projections provide a view of future U.S. temperature and precipitation patterns based on four different greenhouse gas emissions scenarios, spanning the period from 1950 to 2099. The new downscaled climate projections were statistically derived from the results of the latest climate scenarios produced by an ensemble of global climate models for the Inter-Governmental Panel on Climate Change 5th Assessment Report (IPCC AR5) and historical surface observations.
“The NEX-DCP30 dataset provides a higher resolution that will be of great reference to the decision-making of natural resource managers, urban planners and the climate change science community,” said Ramakrishna Nemani, senior Earth science researcher at Ames, and a co-author on the study. Details and availability of the new dataset were published in Eos, Transactions American Geophysical Union on September 10th.
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