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Catalog Record: MODIS Derived Snow Metrics
Filename: imported_locations

Organizations

UAF GINA
Primary
NPS

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MODIS Derived Snow Metrics

The National Park Service and Geographic Information Network of Alaska (GINA) developed an algorithm to derive snow cover climatology for Alaska using the MODIS snow cover daily product. The algorithm is two-fold and involves both data processing and the derivation of snow cover metrics. Terra MODIS snow cover daily 500m grid data (MOD10A1) are processed to reduce cloud obscuration through iterations of cloud reduction methods that include spatial, temporal, and snow cycle filtering. A total of 12 metrics for each pixel are calculated.

Snow-metrics data file defines the following 12 snow metrics: 1) first_snow_day, first day of the full snow season (FSS start day) 2) last_snow_day, last day of the full snow season (FSS end day) 3) fss_range, last_snow_day-first_snow_day +1 4) longest_css_first_day, first day of the longest CSS segment (CSS start day) 5) longest_css_last_day, last day of the longest CSS segment (CSS end day) 6) longest_css_day_range, longest_css_last_day-longest_css_first_day +1 7) snow_days, the number of snow days 8) no_snow_days, the number of no snow days 9) css_segment_num, the number of CSS segments 10) mflag, pixel type (ocean, land, or lake/inland water) and type of snow (no snow, broken snow, or continuous snow) 11) cloud_days, number of cloud days 12) tot_css_days, total number of all days within CSS segments

Complete
2001-01-01
2014-12-31

Data and Resources

  • Download

    Download

    MODIS_Snow_Metrics_Remote Sensing_2015.pdf (11.2 MB)

  • Download

    Download

    2013-asmc-snow-metrics-poster-v3.pdf (2.25 MB)

  • Download

    Download

    2015_49_ASMC.pdf (1.7 MB)

  • Download

    Download :: Image Files (ENVI)

    http://dds.gina.alaska.edu/public/NPS_products/MODIS_snow/

  • View wcs

    WCS :: Snow Metrics WCS

    http://snow.proto.gina.alaska.edu/metrics?

  • View website

    Website :: Project Website

    http://gina.alaska.edu/projects/modis-derived-snow-metrics

Status: Complete
Start Date: 2001/01/01
Type: Data
End Date: 2014/12/31
Data Types: GIS, Web Service, Report
Primary Contacts
Name: Jiang Zhu
Email: jiang@gina.alaska.edu
Other Contacts
Name: Peter Kirchner
Title: NPS Climate and Cryosphere Physical Scientist
Email: peter_kirchner@nps.go
Primary Organizations
Type
UAF Geographic Information Network of Alaska
Academic

Other Organizations
National Park Service

Regions

Direct Record Link
http://nssi.glynx.gina.alaska.edu/catalog/entries/3866-modis-derived-snow-metrics
Direct Full Map Link
http://nssi.glynx.gina.alaska.edu/catalog/entries/3866-modis-derived-snow-metrics/map