Historical summer precipitation (Alaska) (Image Service)

The National Forest Climate Change Maps project was developed by the Rocky Mountain Research Station (RMRS) and the Office of Sustainability and Climate to meet the needs of national forest managers for information on projected climate changes at a scale relevant to decision making processes, including forest plans. The maps use state-of-the-art science and are available for every national forest in the contiguous United States with relevant data coverage. Currently, the map sets include variables related to precipitation, air temperature, snow (including snow residence time and April 1 snow water equivalent), and stream flow.\n\nHistorical (1975-2005) and future (2071-2090) precipitation and temperature data for the state of Alaska were developed by the Scenarios Network for Alaska and Arctic Planning (SNAP) (https://snap.uaf.edu). Monthly precipitation values (mm) were summed over the season of interest (annual, winter, or summer). These datasets have several important differences from the MACAv2-Metdata (https://climate.northwestknowledge.net/MACA/) products, used in the contiguous U.S. They were developed using different global circulation models and different downscaling methods, and were downscaled to a different scale (771 m instead of 4 km). While these cover the same time periods and use broadly similar approaches, caution should be used when directly comparing values between Alaska and the contiguous United States.\n\nRaster data are also available for download from RMRS site (https://www.fs.usda.gov/rm/boise/AWAE/projects/NFS-regional-climate-change-maps/categories/us-raster-layers.html), along with pdf maps and detailed metadata (https://www.fs.usda.gov/rm/boise/AWAE/projects/NFS-regional-climate-change-maps/downloads/NationalForestClimateChangeMapsMetadata.pdf).\n\n

Data and Resources

Field Value
accessLevel public
bureauCode {005:96}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://www.arcgis.com/home/item.html?id=4c5e8f9648004c34b8ab2580ec77f93c
issued 2019-03-05
landingPage https://data-usfs.hub.arcgis.com/datasets/usfs::historical-summer-precipitation-alaska-image-service
license https://creativecommons.org/licenses/by/4.0/
metadata_type geospatial
modified 2022-08-25
old-spatial -180.0000,49.1064,180.0000,71.4307
programCode {005:059}
progressCode onGoing
publisher U.S. Forest Service
resource-type Dataset
source_datajson_identifier true
source_hash 07e14fcabb176c4dc38a965cc1749dddd902351c72695a4c8a75921f5038ef36
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-180.0000, 49.1064], [-180.0000, 71.4307], [180.0000, 71.4307], [180.0000, 49.1064], [-180.0000, 49.1064]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • air-water-and-aquatic-environments-program
  • alaska
  • awae
  • climate
  • climate-change
  • national-forests
  • office-of-sustainability-and-climate
  • open-data
  • osc
  • precipitation
  • rmrs
  • rocky-mountain-research-station
  • usda-forest-service
  • usfs
  • water-yield
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer USFSEnterpriseContent
maintainer_email SM.FS.data@usda.gov
metadata_created 2025-09-23T17:16:59.391936
metadata_modified 2025-09-23T17:16:59.391942
notes <p>The National Forest Climate Change Maps project was developed by the Rocky Mountain Research Station (RMRS) and the Office of Sustainability and Climate to meet the needs of national forest managers for information on projected climate changes at a scale relevant to decision making processes, including forest plans. The maps use state-of-the-art science and are available for every national forest in the contiguous United States with relevant data coverage. Currently, the map sets include variables related to precipitation, air temperature, snow (including snow residence time and April 1 snow water equivalent), and stream flow.</p>\n\n<p>Historical (1975-2005) and future (2071-2090) precipitation and temperature data for the state of Alaska were developed by the Scenarios Network for Alaska and Arctic Planning (SNAP) (https://snap.uaf.edu). Monthly precipitation values (mm) were summed over the season of interest (annual, winter, or summer). These datasets have several important differences from the MACAv2-Metdata (https://climate.northwestknowledge.net/MACA/) products, used in the contiguous U.S. They were developed using different global circulation models and different downscaling methods, and were downscaled to a different scale (771 m instead of 4 km). While these cover the same time periods and use broadly similar approaches, caution should be used when directly comparing values between Alaska and the contiguous United States.</p>\n\n<p>Raster data are also available for download from RMRS site (https://www.fs.usda.gov/rm/boise/AWAE/projects/NFS-regional-climate-change-maps/categories/us-raster-layers.html), along with pdf maps and detailed metadata (https://www.fs.usda.gov/rm/boise/AWAE/projects/NFS-regional-climate-change-maps/downloads/NationalForestClimateChangeMapsMetadata.pdf).</p>\n\n<p><img alt='Legend image' src='https://farm5.staticflickr.com/4865/47007972151_a9299258f0.jpg' /></p>
num_resources 3
num_tags 23
title Historical summer precipitation (Alaska) (Image Service)