Stand Age Projections 2040-2049

These rasters represent output from the Boreal ALFRESCO (Alaska Frame Based Ecosystem Code) model. Boreal ALFRESCO operates on an annual time step, in a landscape composed of 1 x 1 km pixels, a scale appropriate for interfacing with mesoscale climate and carbon models. The last four digits of the file name specifies the year represented by the raster. For example a file named Age_years_historical_1990.tif represents the year 1990. Cell values represent the age of vegetation in years since last fire, with zero (0) indicating burned area in that year. Coverage of this dataset includes much of the state of Alaska (but does exclude Southeastern AK, Kodiak Island, portions of the Alaska Peninsula, and the Aleutian Islands). ALFRESCO simulates the responses of subarctic and boreal vegetation to transient climatic changes. The model assumptions reflect the hypothesis that fire regime and climate are the primary drivers of landscape-level changes in the distribution of vegetation in the circumpolar arctic/boreal zone. Furthermore, it assumes that vegetation composition and continuity serve as a major determinant of large, landscape-level fires. Files from years 1860-2006 use a variety of historical datasets for model spin up and calibration to most closely match historical wildfire dynamics. Files from years 2007-2099 use the Hadley (HAD_CM3) Global Climate model and the A1B emissions scenario for projecting future vegetation ages. The HAD_CM3 model was chosen based on it being the mean predictor of climate.

Data and Resources

Field Value
accessLevel public
bureauCode {010:00}
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identifier 8336f7b0-0504-40ea-9e84-55339396b3d4
metadata_type geospatial
modified 2019-09-09T02:05:04-08:00
old-spatial {"type": "Polygon", "coordinates": [[[-179.999988541, 51.3761358992], [-121.297507628, 51.3761358992], [-121.297507628, 71.437468666], [-179.999988541, 71.437468666], [-179.999988541, 51.3761358992]]]}
publisher LCC Network
resource-type Dataset
source_datajson_identifier true
source_hash ca1e040b92087bba94d2e09150ad2fa00c2c33ee
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-179.999988541, 51.3761358992], [-121.297507628, 51.3761358992], [-121.297507628, 71.437468666], [-179.999988541, 71.437468666], [-179.999988541, 51.3761358992]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • academics-scientific-researchers
  • amerigeo
  • amerigeoss
  • ckan
  • dynamic-vegetation-ecosystem-models
  • environment
  • federal-resource-managers
  • geo
  • geoss
  • interested-public
  • land-cover
  • landscape-ecology
  • landscape-processes
  • national
  • north-america
  • permafrost
  • soil-temperature
  • united-states
  • wetlands
isopen False
license_id notspecified
license_title License not specified
maintainer (Point of Contact); Arctic Landscape Conservation Cooperative (Point of Contact, Publisher)
maintainer_email lccdatasteward@fws.gov
metadata_created 2025-11-22T01:33:48.747099
metadata_modified 2025-11-22T01:33:48.747103
notes These rasters represent output from the Boreal ALFRESCO (Alaska Frame Based Ecosystem Code) model. Boreal ALFRESCO operates on an annual time step, in a landscape composed of 1 x 1 km pixels, a scale appropriate for interfacing with mesoscale climate and carbon models. The last four digits of the file name specifies the year represented by the raster. For example a file named Age_years_historical_1990.tif represents the year 1990. Cell values represent the age of vegetation in years since last fire, with zero (0) indicating burned area in that year. Coverage of this dataset includes much of the state of Alaska (but does exclude Southeastern AK, Kodiak Island, portions of the Alaska Peninsula, and the Aleutian Islands). ALFRESCO simulates the responses of subarctic and boreal vegetation to transient climatic changes. The model assumptions reflect the hypothesis that fire regime and climate are the primary drivers of landscape-level changes in the distribution of vegetation in the circumpolar arctic/boreal zone. Furthermore, it assumes that vegetation composition and continuity serve as a major determinant of large, landscape-level fires. Files from years 1860-2006 use a variety of historical datasets for model spin up and calibration to most closely match historical wildfire dynamics. Files from years 2007-2099 use the Hadley (HAD_CM3) Global Climate model and the A1B emissions scenario for projecting future vegetation ages. The HAD_CM3 model was chosen based on it being the mean predictor of climate.
num_resources 187
num_tags 19
title Stand Age Projections 2040-2049