BLM REA YKL 2011 Long-Term Future (2060s) 5th Level Hydrologic Units with more than 400 sq km of Permafrost Loss in the Yukon River Lowlands - Kuskokwim Mountains - Lime Hills

Metadata Updated: October 10, 2019

Some of the YKL rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - Areas of continuous permafrost currently exist within the YKL study area, primarily in the northern and eastern sections. However, by the 2060s, the mean annual ground temperature at 1 m depth is expected to rise throughout the planning area. The purpose of this dataset is to identify 5th level hydrologic units from the USGS Watershed Boundary Dataset in which at least 400 sq km of current continuous permafrost will change to discontinuous or no permafrost by the 2060s. Continuous permafrost can be theoretically represented by areas with mean annual ground temperature less than or equal to -1 degree celsius at 1 m depth. Discontinuous permafrost can be theoretically represented by areas with mean annual ground temperature between -1 and 1 (inclusive) degree celsius at 1 m depth. No permafrost (seasonally thawed ground) can be theoretically represented by areas with mean annual ground temperature greater than 1 degree celsius at 1 m depth. The numbers of pixels representing continuous permafrost in the current and long-term future were summed by 5th level hydrologic units. The pixel numbers were then subtracted so that long-term future was subtracted from current. Hydrologic units with 400 sq km or less permafrost loss were not considered significantly changing. The majority of area of current continuous permafrost, primarily in the northern and eastern portions of the study area, is expected to change to discontinuous or no permafrost by the 2060s. This dataset is based on the A2 climate scenario.

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date December 20, 2017
Metadata Created Date October 10, 2019
Metadata Updated Date October 10, 2019
Reference Date(s) September 29, 2014 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from DOI CKAN Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Date December 20, 2017
Metadata Created Date October 10, 2019
Metadata Updated Date October 10, 2019
Reference Date(s) September 29, 2014 (publication)
Responsible Party Alaska Natural Heritage Program, University of Alaska Anchorage (Point of Contact)
Contact Email
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Bbox East Long -150.177998
Bbox North Lat 66.461036
Bbox South Lat 59.068725
Bbox West Long -162.557305
Coupled Resource
Frequency Of Update notPlanned
Guid
Harvest Object Id b71585fc-93fd-457d-85c6-875ad343bd71
Harvest Source Id 34ce571b-cb98-4e0b-979f-30f9ecc452c5
Harvest Source Title DOI CKAN Harvest Source
Licence The BLM assumes no responsibility for errors or omissions. No warranty is made by the BLM as to the accuracy, reliability, or completeness of these data for individual use or aggregate use with other data; nor shall the act of distribution to contractors, partners, or beyond, constitute any such warranty for individual or aggregate data use with other data. Although these data have been processed successfully on computers of BLM, no warranty, expressed or implied, is made by BLM regarding the use of these data on any other system, or for general or scientific purposes, nor does the fact of distribution constitute or imply any such warranty. In no event shall the BLM have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of the use or reliance on the geographic data or arising out of the delivery, installation, operation, or support by BLM.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true

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