California Local Climate Change Snapshot Tool

The California Local Climate Change Snapshot tool presents localized projections of changes in temperature, precipitation, and wildfire for all locations in California based on climate model output through the year 2100. The Snapshot is designed to be accessible for most or all users, and provides a brief overview of potential climate change impacts within a region.

Obtain localized climate change projections related to temperature, precipitation, or wildfire for an address, census tract, city, county, or watershed in California.

The Snapshot presents localized (at 1/16 of a degree of latitude or longitude; about 3.7 miles) observed and projected changes in temperature, precipitation, and wildfire. Users can enter a specific address or select a city, county, census tract, or watershed to view averages across larger spatial scales.

Users can request information on projections for:

  • Temperature
    • Annual average maximum
    • Annual average minimum
    • Extreme heat days
    • Warm nights
  • Precipitation
    • Maximum 1-day
    • Length of dry spells
    • Annual
  • Annual average area burned in wildfires. (Projections are only provided for locations that have a history of fire.)

Projections, which are presented both as graphs and in table format, are developed from global climate models  based on two emissions scenarios – a very high scenario of climate change (i.e., high greenhouse emissions; RCP 8.5) and a lower scenario (somewhat lower than current emissions trajectory; RCP 4.5). The graph displays a projected range (e.g., number of extreme heat days) for any given year through 2100, while the table format displays change from baseline (i.e., the difference between modeled future and historical values), and 30-year averages and ranges (e.g., number of extreme heat days per year) for both emission scenarios and for mid-century (2035-2064) and late-century (2070-2099) periods. 

Specific climate models are selected to encompass a range of projections. The climate model projections are downscaled to 1/16 degree using the Localized Constructed Analogues (LOCA) method, which combines low resolution climate projections and high-resolution observed climate data.

The Snapshot data is part of the Cal-Adapt set of tools and was developed by the University of California – Berkeley’s Geospatial Innovation Facility. Oversight for the Snapshot data was provided by the California Energy Commission and the California Strategic Growth Council.

Related Organizations:

Resource Category:

Resource Types:

  • Modeling tool

States Affected:

Impacts:

  • Air temperature
  • Heat waves
  • Precipitation changes
  • Wildfires

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