Data · collection
Long-Term Ecological Research (LTER)/NWTablameantd: Snowpack ablation in alpine couloirs: Mean data
Listed in NASA Earthdata CMR
Description
[For a more detailed metadata record, see: culter.colorado.edu:1030/exec/.extracttoolA?ablamean.td] Lowering of the snowpack surface by ablation (melt) was measured on a bimonthly basis within couloirs above the Green Lakes and Isabelle Valleys during the summer months. One-inch diameter PVC poles were driven into the snowpack to form vertical transects within each couloir. The height difference (cm) between the top of each pole and the snow surface was recorded.
On the subsequent visit the new height difference was recorded and the pole driven into the snow and the reset height was recorded. Poles in a given transect were relocated as necessary during the course of the season. The Niwot Ridge LTER site (40deg.3'N. 105deg.36'W.) is located approximately 35 km west of Boulder, Colorado, with the entire study site lying above 3000 m elevation.
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There is a cirque glacier (Arikaree Glacier [~90K photo and caption]), extensive alpine tundra, a variety of glacial landforms, glacial lakes and moraines, cirques and talus slopes, patterned ground, and permafrost. The research area is bounded on the west by the Continental Divide, with runoff on the two sides being destined for the Colorado and Mississippi Rivers. Information about the Long-Term Ecological Research (LTER) Program can be obtained from: LTER Network Office College of Forest Resources AR-10 University of Washington Seattle, WA 98195 Phone: 206-543-4853 FAX: 206-685-0790 Email: office@lternet.edu lternet.edu or National Science Foundation Division of Environmental Biology Long-Term Projects in Environmental Biology Phone: 703-306-1479 Email: scollins@nsf.gov Information about LTER is also available on-line on most gopher servers and is also available on the World Wide Web (WWW) at lternet.edu/
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214154886-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214154886-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Ablation Zones/Accumulation Zones · Alpine/Tundra · Not provided · Snow Depth · Snow Melt
- Inferred from text
- Glaciology 76%
Provenance · 1 source records, 13 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214154886-SCIOPS | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:field:370902 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (76%) |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecosystems/terrestrial-ecosystems/alpine-tundra | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/ablation-zones-accumulation-zones | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/snow-ice/snow-depth | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/snow-ice/snow-melt | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| 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 |