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Simulated Snowpack During Historical Period

Simulated Snowpack During Historical Period

May 24, 2013

Uploaded by John B. Kim

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Description:: This collection of layers includes summary statistics from input and output data used for simulation of vegetation response to climate change in California. The historical data layers represent the 30 year period from 1961 to 1990. Future data layers represent each four 20 year periods: 2010-2029, 2030-2049, 2060-2079, and 2080-2099. The simulations were performed using MC1 dynamic global vegetation model (DGVM), source code revision 152. The model was parameterized and evaluated by the DGVM research group at the US Forest Service Pacific Northwest Research Station, with support from the Western Wildland Environmental Threat Assessment Center. The model was parameterized to maximize concordance with maps of potential natural vegetation and seasonal patterns of vegetation production for the historical period (1895-2009).

The input data representing historical climate spans 1895 to 2009, and were downscaled by Flint and Flint (2012) from 2.5 arc-minute resolution PRISM data (Daly et al 1994). The input data representing future climate comprise four climate projections, representing two SRES emissions scenarios A2 and B1 simulated by two general circulation models (GCM’s) PCM and GFDL. For details on the selection of the four climate projections, see Cayan et al (2008). PCM’s climate projections span years 2000 to 2009, and GFDL’s climate projections span years 2001 to 2100. The input climate data were originally downscaled to 270 m resolution by Flint and Flint (2012) but aggregated up to 30 arc-second resolution for MC1 simulation. All input and output data cover all of California and the major basins draining into it.

//------------- HISTORICAL ---------------

Layer: Historical_annual_ppt
Units: mm H2O yr-1
Citations: Flint and Flint 2012

Layer: Historical_annual_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: Historical_seasonal_ppt
Units: mm H2O season-1
Citations: Flint and Flint 2012

Layer: Historical_seasonal_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: Historical_annual_consumed
MC1 Variable: CONSUMEDyr
Units: g C m-2 y-1
Citations: USDA Forest Service Pacific Northwest Research Station 2013

Layer: Historical_annual_runoff
MC1 Variable: STREAMFLOWyr
Units: mm H2O y-1
Citations: USDA Forest Service Pacific Northwest Research Station 2013

Layer: Historical_annual_snow_max
MC1 Variable: snow_max
Units: mm H2O
Citations: USDA Forest Service Pacific Northwest Research Station 2013

Layer: Historical_annual_vegtype
MC1 Variable: VTYPEyr
Units: see Table 1 below
Citations: USDA Forest Service Pacific Northwest Research Station 2013

//------------- GFDL A2 ------------------

Layer: GFDL_A2_annual_ppt
Units: mm H2O yr-1
Citations: Flint and Flint 2012

Layer: GFDL_A2_annual_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: GFDL_A2_seasonal_ppt
Units: mm H2O season-1
Citations: Flint and Flint 2012

Layer: GFDL_A2_seasonal_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: GFDL_A2_annual_consumed
MC1 Variable: CONSUMEDyr
Units: g C m-2 y-1
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: GFDL_A2_annual_runoff
MC1 Variable: STREAMFLOWyr
Units: mm H2O y-1
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: GFDL_A2_annual_snow_max
MC1 Variable: snow_max
Units: mm H2O
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: GFDL_A2_annual_vegtype
MC1 Variable: VTYPEyr
Units: see Table 1 below
Citations: USDA Forest Service Pacific Northwest Research Station

//------------- GFDL B1 ------------------

Layer: GFDL_B1_annual_ppt
Units: mm H2O yr-1
Citations: Flint and Flint 2012

Layer: GFDL_B1_annual_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: GFDL_B1_seasonal_ppt
Units: mm H2O season-1
Citations: Flint and Flint 2012

Layer: GFDL_B1_seasonal_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: GFDL_B1_annual_consumed
MC1 Variable: CONSUMEDyr
Units: g C m-2 y-1
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: GFDL_B1_annual_runoff
MC1 Variable: STREAMFLOWyr
Units: mm H2O y-1
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: GFDL_B1_annual_snow_max
MC1 Variable: snow_max
Units: mm H2O
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: GFDL_B1_annual_vegtype
MC1 Variable: VTYPEyr
Units: see Table 1 below
Citations: USDA Forest Service Pacific Northwest Research Station

//------------- PCM A2 ------------------

Layer: PCM_A2_annual_ppt
Units: mm H2O yr-1
Citations: Flint and Flint 2012

Layer: PCM_A2_annual_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: PCM_A2_seasonal_ppt
Units: mm H2O season-1
Citations: Flint and Flint 2012

Layer: PCM_A2_seasonal_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: PCM_A2_annual_consumed
MC1 Variable: CONSUMEDyr
Units: g C m-2 y-1
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: PCM_A2_annual_runoff
MC1 Variable: STREAMFLOWyr
Units: mm H2O y-1
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: PCM_A2_annual_snow_max
MC1 Variable: snow_max
Units: mm H2O
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: PCM_A2_annual_vegtype
MC1 Variable: VTYPEyr
Units: see Table 1 below
Citations: USDA Forest Service Pacific Northwest Research Station

//------------- PCM B1 ------------------

Layer: PCM_B1_annual_ppt
Units: mm H2O yr-1
Citations: Flint and Flint 2012

Layer: PCM_B1_annual_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: PCM_B1_seasonal_ppt
Units: mm H2O season-1
Citations: Flint and Flint 2012

Layer: PCM_B1_seasonal_tmp
Units: degrees Celsius
Citations: Flint and Flint 2012

Layer: PCM_B1_annual_consumed
MC1 Variable: CONSUMEDyr
Units: g C m-2 y-1
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: PCM_B1_annual_runoff
MC1 Variable: STREAMFLOWyr
Units: mm H2O y-1
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: PCM_B1_annual_snow_max
MC1 Variable: snow_max
Units: mm H2O
Citations: USDA Forest Service Pacific Northwest Research Station

Layer: PCM_B1_annual_vegtype
MC1 Variable: VTYPEyr
Units: see Table 1 below
Citations: USDA Forest Service Pacific Northwest Research Station

Table 1. Vegetation Types

Code     Type
1              Barren
2              Alpine
6              Subalpine
7              Maritime Needleleaf Forest
8              Temperate Needleleaf Forest
11           Temperate Warm Mixed Forest
12           Temperate Needleleaf Woodland
15           Temperate Warm Mixed Woodland
16           Temperate Shrubland
17           Temperate Grassland
18           Temperate Desert
21           Subtropical Evergreen Broadleaf Forest
22           Subtropical Mixed Forest
25           Subtropical Evergreen Broadleaf Woodland
26           Subtropical Mixed Woodland
27           Subtropical Shrubland
28           Subtropical Grassland
29           Subtropical Desert

References:

Cayan DR, Maurer EP, Dettinger MD, Tyree M, Hayhoe K (2008) Climate change scenarios for the California region. Climatic Change 87(Suppl 1):S21-S42.

Daly, C., R.P. Neilson, and D.L. Phillips, 1994: A Statistical-Topographic Model for Mapping Climatological Precipitation over Mountanious Terrain. J. Appl. Meteor., 33, 140-158.

Flint, Lorraine E., and Alan L. Flint. "Downscaling future climate scenarios to fine scales for hydrologic and ecological modeling and analysis." Ecological Processes 1.1 (2012): 1-15.

Data Provided By:: US Forest Service Pacific Northwest Research Station and WWETAC

Map Service URL:: http://fs2.bioe.orst.edu:6080/arcgis/rest/services/CA_MC1/Historical_annual_snow_max/MapServer

Content date:: not specified

Spatial Resolution:: 30 arc seconds

Contact Organization:: US Forest Service Pacific Northwest Research Station and WWETAC

Contact Person(s):

John B. Kim

Use Constraints:: This work is licensed under a Creative Commons Attribution 3.0 License.

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Dataset Type:: External Map Service (ArcGIS)

Tags:: snowpack, simulation, climate change, california, model, mc1

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About the Uploader

John B. Kim

Biological Scientist with US Forest Service Pacific Northwest Research Station and WWETAC

I am a biological scientist at the US Forest Service Pacific Northwest Research Station and Western Wildland Environmental Threat Assessment Center (WWETAC). I study climate change impacts to vegetation using dynamic global vegetation models (DGVM's).