MODIS MOD10A2 derived snow persistence and no data index for the western U.S.
|Authors:||John C. Hammond · Freddy A. Saavedra · Stephanie K. Kampf|
|Created:||Feb. 7, 2017, 9:23 p.m.|
|Last updated:||Feb. 8, 2017, midnight by John Hammond|
Snow persistence (SP) or the snow cover index (SCI), is the fraction of time that snow is present on the ground for a defined period. No data index (NDI) is the fraction of time that there is no data, cloud, or sensor saturation for the same period. SP and NDI were calculated on a pixel by pixel basis using MODIS/Terra Snow Cover 8-Day L3 Global 500m Grid, Collection 5 obtained from the National Snow and Ice Data Center (NSIDC). We computed the 1 January – 3 July SP for each year as the fraction of 8-day MODIS images with snow present. The selected period brackets the temporal extent of peak snow accumulation to complete snow ablation in most parts of the western United States. Spatial coverage is for MODIS tiles h08v04, h08v05, h09v04, h09v05, and h10v04. The 3 July date is used because the 8-day MODIS image does not fall on the first of the month in this case. Files are provided in the "USA Contiguous Albers Equal Area Conic USGS" projection. File nomenclature follows the following structure: "MOD10A2_(SCI or NDI)_(Water year the values correspond to, ex. 2001)_eq_alb.tif." Funding provided by NSF grant EAR-1446870.
MODIS,remote sensing,climate change,snow covered index,snow,western U.S.,snow persistence,snow covered area
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This resource is shared under the Creative Commons Attribution CC BY.http://creativecommons.org/licenses/by/4.0/
|Coordinate System/Geographic Projection:||WGS 84 EPSG:4326|
|Coordinate Units:||Decimal degrees|
|John C. Hammond||Colorado State University, Department of Geosciences||Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO, 80523||240-274-7746|
|Freddy A. Saavedra||Colorado State University, Department of Geosciences||Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO, 80523|
|Stephanie K. Kampf||Colorado State University, Department of Ecosystem Science and Sustainability||Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO, 80523||970-491-0931|
This resource was created using funding from the following sources:
|Agency Name||Award Title||Award Number|
|National Science Foundation||Division of Earth Sciences||1446870|
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