Downscaled climate projections from Scripps Institution Of Oceanography using Localized Constructed Analogs (LOCA). LOCA is a statistical technique that uses past history to add improved fine-scale detail to global climate models. Details are described in Pierce et al., 2014.

Cal-Adapt provides access to 10 of the 32 LOCA downscaled global climate models with two future scenarios RCP 4.5 and RCP 8.5 and a historical modeled scenario through the Cal-Adapt API. These 10 models were selected by California agencies for performance in the California/Nevada region. For more details on this process see Perspectives and Guidance for Climate Change Analysis. Data for 31 models is available in NetCDF format from the Cal-Adapt Data Server.

Additionally, an envelope of modeled variability was generated by selecting the highest and lowest values from annual averages of all 32 LOCA downscaled climate models. This envelope is available as two different time series:

Spatial Resolution and Extent

The spatial resolution of this data is 1/16ยบ (approximately 6 km). The spatial extent available on Cal-Adapt covers entire state of California and Nevada and parts of Oregon, Mexico and Arizona.

Temporal Resolution

Download Data

For large areas or full spatial extent, it is more efficient to download data in NetCDF or GeoTIFF formats and clip to desired spatial extent. For smaller areas, additional options for downloading data in CSV or JSON formats are available through download tool below.


  • Cal-Adapt Data Server (Geopspatial Innovation Facility, UC Berkeley)
  • Green Data Oasis (Lawrence Livermore National Laboratory). Spatial extent includes conterminous US.
  • OpenNEX (NASA). Spatial extent includes conterminous US.
  • Geo Data Portal (USGS). Spatial extent includes central Mexico, US, and southern Canada. THREDDS access.
  • Desert Research Institute (Southwest Climate and Environmental Information Collaborative). Spatial extent includes central Mexico, US, and southern Canada.

Other Formats

Spatial Extent
Climate Variable

Cal-Adapt API