Data · collection
Temperate East Asia Snow and Ice Cover
Listed in NASA Earthdata CMR
Description
Twenty-seven 10-day synthesis products of VEGETATON sensor (VGT-S10) on SPOT 4 satellite were acquired for land cover characterization in temperate East Asia. The 10-day VGT-S10 composites have a spatial resolution of 1 km and are generated based on the maximum NDVI values during the 10-day period (see SPOT website, "spot.com", for more info). The primary emphasis of this project was to develop a dataset which describes the spatial distribution and seasonal dynamics of snow and ice cover in the alpine regions of east Asia.
These data are critically needed by the climate and hydrological modeling communities. A Snow/Ice Cover data set is currently available in this collection. The Snow/Ice Cover data set contains two variables: 1) A normalized difference snow and ice index (NDSII) and 2) a snow and ice cover thematic map.
Read the rest (2 more)
The NDSII was calculated from band reflectance data from each of the 27 10-day composites acquired during the time period. Snow and ice coverage maps were generated for each of the 27 composites by assigning snow/ice cover to pixels which had an NDSII >= 0.40 and a Band 3 value (NIR reflectance) > 0.11. Each of the two variables has 27 holdings representing images for each 10-day composite period between March 1, 1999 and November 30, 1999.
These data are provided in the Lambert Azimuthal Equal Area projection at a 1 km resolution.
Links
Get the data
- eos-earthdata.sr.unh.edu /data ↗
EOS-WEBSTER Earth Science Information Partner (ESIP) provides terrestrial ecosystem research data via a web-based search, subset and order system.
download · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214608597-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214608597-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Snow Cover · Snow Cover · Systeme Probatoire Pour l'Observation de la Terre-4 · VEGETATION INSTRUMENT 1 (SPOT 4)
- Inferred from text
- Image 65% · Physical geography and environmental geoscience 70%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214608597-SCIOPS | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3709 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| concepts[instrument].gcmd_instrument:vegetation-1 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/snow-ice/snow-cover | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/terrestrial-hydrosphere/snow-ice/snow-cover | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[platform].gcmd_platform:spot-4 | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |