National Climate Change Viewer (NCCV) Updates
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The second major version of the National Climate Change Viewer includes the following key additions and improvements:
- We have used the air temperature and precipitation data from the 30 CMIP5 models as input to a simple water-balance model to simulate changes in the surface water balance over the historical and future time periods. The water-balance model provides new variables for snow water equivalent, runoff, soil water storage and evaporative deficit. See Section 4 in the Tutorial and Documentation for information about the water-balance model.
- In addition to states and counties, the application now includes summaries for watersheds using the USGS Hydrologic Units (HUC2, HUC4, and HUC8).
- The downloadable PDF Summary Reports now include the water-balance variables and have been consolidated into an overarching summary for each geographical unit (state, county or watershed). Click here for an example report for Benton County, Oregon.
- The Tutorial and Documentation has been expanded to include background for the new water-balance model variables and has been reformatted as a downloadable PDF document.
The web application has been updated to provide both English and metric units and includes new map cache techniques to provide faster map generation.
Important Information Regarding Mean Model RCP8.5 Precipitation
Issued 12/13/2013 9:24AM PST
The RCP8.5 mean model precipitation time series plots in the viewer and in the PDF and CSV files have been corrected. The previous plots and data for RCP8.5 precipitation were inadvertently based on averages for all models and both the RCP4.5 and RCP8.5 scenarios. As of 12/13/2013 at 9:45AM PST, the viewer and the CSV files have been updated. The revised PDF summaries for the mean model will be available later today.