BLM REA YKL 2011 Decadal Mean June July August Temperature 2020s A2 Scenario

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. - This set of files includes downscaled projections of decadal means of summer (June-July-August) mean temperatures (in degrees Celsius, no unit conversion necessary) for each month of decades 2010-2019, 2020-2029, 2050-2059, and 2060-2069 at 771x771 meter spatial resolution. Each file represents a seasonal mean in a given decade. The spatial extent is clipped to a YKL REA boundary bounding box. Overview: Most of SNAP’s climate projections come in multiple versions. There are 5 climate models, one 5 model average, 3 climate scenarios, 12 months, and 100 years. This amounts to 21,600 files per variable. Some datasets are derived products such as monthly decadal averages or specific seasonal averages, among others. This specific dataset is one subset of those. Each set of files originates from one of five top ranked global circulation models or is calculated as a 5 Model Average. These models are referred to by the acronyms: cccma_cgcm31, mpi_echam5, gfdl_cm21, ukmo_hadcm3, miroc3_2_medres, or 5modelavg. For a description of the model selection process, please see Walsh et al. 2008. Global Climate Model Performance over Alaska and Greenland. Journal of Climate. v. 21 pp. 6156-6174 Each set of files also represents one projected emission scenario referred to as: sresb1, sresa2, or sresa1b. Emission scenarios in brief: The Intergovernmental Panel on Climate Change (IPCC) Special Report on Emissions Scenarios (SRES) created a range of scenarios to explore alternative development pathways, covering a wide range of demographic, economic and technological driving forces and resulting greenhouse gas emissions. The B1 scenario describes a convergent world, a global population that peaks in mid-century, with rapid changes in economic structures toward a service and information economy. The Scenario A1B assumes a world of very rapid economic growth, a global population that peaks in mid-century, rapid introduction of new and more efficient technologies, and a balance between fossil fuels and other energy sources. The A2 scenario describes a very heterogeneous world with high population growth, slow economic development and slow technological change. These files are bias corrected and downscaled via the delta method using PRISM (http://prism.oregonstate.edu/) 1961-1990 2km data as baseline climate. Absolute anomalies are utilized for temperature variables. Proportional anomalies are utilized for precipitation variables. Please see http://www.snap.uaf.edu/about for a description of the downscaling process.

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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) January 1, 2013 (publication)
Frequency Of Update asNeeded

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) January 1, 2013 (publication)
Responsible Party Scenarios Network for Alaska and Arctic Planning (SNAP) (Point of Contact)
Contact Email
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Bbox East Long -134.04
Bbox North Lat 71.430670
Bbox South Lat 49.106935
Bbox West Long -180.000000
Coupled Resource
Frequency Of Update asNeeded
Guid
Harvest Object Id 61ec62da-ae0f-43dc-a77f-bc5fcb4be09d
Harvest Source Id 34ce571b-cb98-4e0b-979f-30f9ecc452c5
Harvest Source Title DOI CKAN Harvest Source
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Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true

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