Overview

The USGS National Climate Change Viewer (NCCV) is a web application for visualizing climate projections from the Climate Model Intercomparison Program (CMIP) that have been statistically downscaled to high spatial resolution for the conterminous United States. 

The NCCV allows users to visualize projected changes in climate (maximum and minimum air temperature, precipitation) and the 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. 

The application provides monthly time series and averages for the historical period (1981-2010) and three future time periods (2025-2049, 2050-2074, and 2075-2099). It also allows user to access comprehensive summary reports in PDF format and CSV files for the climate and water balance variables for each geographic area.

There are two application versions of projection downscaling methods: CMIP6 (current generation) and CMIP5 (previous generation) and users can explore the States model or the Watershed model. Start by selecting a region of interest to display the charts and then use the control options on the left-hand side and right-hand side of the application to select climate variables, month, model, scenario, and time period to display on the map and charts:

• View the NCCV States CMIP6 model 
• View NCCV Watersheds CMIP6 model

Managing Organizations

U.S. Geological Survey (USGS)

The USGS is a science organization that provides impartial information on the health of our ecosystems and environment, the natural hazards that threaten us, the natural resources we rely on, the impacts of climate and land-use change, and the core science systems that help us provide timely, relevant, and useable information.

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