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Historical and Projected Decadal Average Monthly Snowfall Equivalent and the Ratio of Snowfall Equivalent to Precipitation 771m CMIP5/AR5/CRU TS3.1

These files include climatological summaries of downscaled historical and projected decadal average monthly derived snow variables and summaries at 771 meter spatial resolution across Alaska.

There are three types of files:

1). The historical and future snowfall water equivalent (SWE) in millimeters, produced by multiplying snow-day fraction by decadal average monthly precipitation and summing over 6 months from October to March to estimate the total SWE on April 1.

2). The historical and future ratio of SWE to total precipitation (SFEtoP) in percent. SFEtoP is calculated as (SWE / total precipitation) and also represents the six month October to March period.

3). The future difference in SWE with respect to the historical baseline (dSWE) in percent. dSWE is calculated as ((future SWE – historical SWE) / historical SWE) * 100. These data are also summary for the six month October to March period.

The historical baseline period is 1970-1999, (file naming convention “H70.99”) and data are calculated from downscaled CRU TS 3.1 data.

Projected variables exist for RCP 4.5 and RCP 8.5 emission scenarios and for 5 GCMs: NCAR-CCSM4, GFDL-CM3, GISS-E2-R, IPSL-CM5, and MRI-CGCM3. The 5-model mean (file naming convention "5MM") was also computed.

Projections exist for three thirty-year climatologies: the 2020s (2010-2039), the 2050s (2040-2069), and the 2080s (2070-2099).

The snow-day fraction data used can be found here:

http://ckan.snap.uaf.edu/dataset/projected-decadal-averages-of-monthly-snow-day-fraction-771m-cmip5-ar5

http://ckan.snap.uaf.edu/dataset/historical-decadal-averages-of-monthly-snow-day-fraction-771m-cru-ts3-0-3-1

The precipitation data used can be found here:

http://ckan.snap.uaf.edu/dataset/projected-monthly-and-derived-precipitation-products-771m-cmip5-ar5

http://ckan.snap.uaf.edu/dataset/historical-monthly-and-derived-precipitation-products-771m-cru-ts

Note: In Littell et al. 2018, "SWE" is referred to as "SFE", and "SFEtoP" as "SFE:P"

Simple

Date (Creation)
2018-11-16
Edition
1.0.0
Credit
Matthew Leonawicz
Credit
Michael Lindgren
Credit
Tom Kurkowski
Credit
John Walsh
Credit
Scott Rupp
Credit
Stephanie McAfee
Credit
Jeremy Littell
Status
On going
Point of contact
  Scenarios Network for Alaska and Arctic Planning
Maintenance and update frequency
As needed
Theme
  • precipitation
  • snow
  • snow water equivalent
  • projected
  • modeled
  • CMIP5
  • historical
  -
Use constraints
License
Spatial representation type
Grid
Distance
771  m
Metadata language
eng
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere
Begin date
1970-10-01
End date
2099-03-31
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W
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Unique resource identifier
EPSG:3338
Number of dimensions
3
Dimension name
Time
Dimension name
Row
Dimension name
Column
Cell geometry
Area
Distribution format
  • ( )

OnLine resource
Historical and Projected Decadal Average Monthly Snowfall Equivalent and the Ratio of Snowfall Equivalent to Precipitation 771m CMIP5/AR5/CRU TS3.1 ( WWW:LINK-1.0-http--link )

URL to web-accessible folder containing downloads for this data set.

OnLine resource
Elsner et al., 2010: Implications of 21st century climate change for the hydrology of Washington State ( WWW:LINK-1.0-http--link )

Publication

OnLine resource
McAfee et al., 2014: Statistically downscaled projections of snow/rain partitioning for Alaska ( WWW:LINK-1.0-http--link )

Publication

OnLine resource
Walsh et al., 2018: Downscaling of climate model output for Alaskan stakeholders ( WWW:LINK-1.0-http--link )

Publication

OnLine resource
Littell et al., 2018: Alaska Snowpack Response to Climate Change: Statewide Snowfall Equivalent and Snowpack Water Scenarios ( WWW:LINK-1.0-http--link )

Publication

OnLine resource
ScienceBase Catalog Record ( WWW:LINK-1.0-http--link )

ScienceBase Catalog Record: "Collection: Historical and Projected Estimates of Snow Fraction and and the Amount of Precipitation that Likely Falls as Snow Across Alaska"

Hierarchy level
Dataset
File identifier
d5ad3b51-3ea7-4f40-ac2e-b835dc95152c XML
Metadata language
English
Character set
UTF8
Date stamp
2022-08-18T09:59:17
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  Scenarios Network for Alaska and Arctic Planning
 
 

Overviews

overview

Spatial extent

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Keywords

CMIP5 historical modeled precipitation projected snow snow water equivalent

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