Data · collection
Ground penetrating radar, snow accumulation and snow pit measurements at McMurdo Ice Shelf and in the catchment basin of Erebus glacier
Listed in NASA Earthdata CMR
The knowledge of the cryosphere's mass balance is fundamental to understanding the impacts of climate change.
Description
Much of the research into the key components of the cryosphere is based on measurements of ice surface height, sea ice thickness, and snow morphology. A large amount of this information is derived from satellites.
In order to make this information reliable it is derived from algorithms developed and tested with robust ground truth data, which is reference data of physical snow and ice properties collected on the ground. The objective of this research is to obtain improved information of the polar cryosphere derived from remote sensing data, in particular from ESA’s Cryosat satellite. Cryosat, one of the European Space Agency’s Earth Explorer missions, will be launched in 2009.
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Internal snow layers of the upper 10m were measured using ground penetrating radar (GPR) in two 800x800m grids at McMurdo Ice Shelf and in one 250x250m grid at Ross Island. Grid spacing is 100m, one bamboo stake was installed at every grid node to measure accumulation directly, to guide GPR measurements, and to measure ice dynamics. Radar frequencies used were 500 and 1000 MHz.
The measurement sites at McMurdo Ice Shelf are located on a Cryosat subsatellite track, in between both sites. 19 additional stakes were installed every 1.6 km and radar data were collected. Snow pit measurements were made at all three measurement sites.
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214594135-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214594135-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Ablation Zones/Accumulation Zones · FIELD INVESTIGATION · FIELD SURVEYS · Glacier Mass Balance/Ice Sheet Mass Balance · GROUND-BASED OBSERVATIONS · Ground Penetrating Radar · Ice Sheets · Not provided
- Inferred from text
- Satellite remote sensing 65%
Provenance · 1 source records, 15 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214594135-SCIOPS | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:gpr | 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/glaciers-ice-sheets/glacier-mass-balance-ice-sheet-mass-balance | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/ice-sheets | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:remote-sensing | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[platform].gcmd_platform:field-investigation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:field-surveys | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:ground-based-observations | 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 |
| 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 |