Tool
National Climate Change Viewer
Description
This tool offers historical (1950-2005) and future (2006-2099) climate and water balance projections derived from 20 downscaled CMIP5 climate models for the RCP4.5 and RCP8.5 scenarios. Updated in 2021, the newest version of the tool adds new measures of statistical significance and a plotting feature that lets users visualize underlying relationships between two selected variables and any number of the 20 climate models.
The NCCV gives users a way to
- visualize projected changes in climate (maximum and minimum air temperature, precipitation, vapor pressure deficit) and water balance (snow water equivalent, runoff, soil water storage, and evaporative deficit) for any state, county and USGS Hydrologic Units (HUC4 and HUC8) using a variety of graphics and tools.
- view annual, seasonal, and monthly time series and averages for the historical period (1981-2010) and three future time periods (2025-2049, 2050-2074, and 2075-2099).
- characterize climate change on maps, climographs (plots of monthly averages), histograms that show the distribution or spread of the model simulations, time series plots, and tables that summarize projected changes.
- generate comprehensive, summary reports in PDF format and CSV files for the climate and water balance variables for each geographic area. Reports include national and regional maps for each variable and scenario
- check the statistical significance of future changes for each region from the data table and model agreement charts.
- export any chart in the NCCV in a range of graphic formats. Chart data can be exported in a compressed JSON format.
About the dataset
The NCCV displays the MACAv2-METDATA dataset, which is based on advanced methods of bias correction and downscaling. The MACAv2-METDATA dataset comprises results from 20 Global Climate Model on a 4 km by 4 km grid over the contiguous U.S.
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Details
Hazards Addressed
Assets
