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Government Releases Climate Change Viewer

On May 9, 2014, the Secretary of the Interior announced the release of the National Climate Change Viewer. The Cimate Change Viewer is interactive, permitting the user to see two scenarios for changes up through 2099.

The description of the Viewer notes:

“The USGS National Climate Change Viewer (NCCV) includes the historical and future climate projections from 30 of the downscaled models for two of the RCP emission scenarios, RCP4.5 and RCP8.5. RCP4.5 is one of the possible emissions scenarios in which atmospheric GHG concentrations are stabilized so as not to exceed a radiative equivalent of 4.5 Wm-2 after 2100, about 650 ppm CO2 equivalent. RCP8.5 is the most aggressive emissions scenario in which GHGs continue to rise unchecked through the end of the century leading to an equivalent radiative forcing of 8.5 Wm-2, about 1370 ppm CO2 equivalent. To create a manageable number of permutations for the viewer, we averaged the climate and water balance data into four climatology periods: 1950-2005, 2025-2049, 2050-2074, and 2075-2099.”

-Steven Silverberg