Table · collection · 2025
SnowEx20 Time Series Snow Change Measurements from Interval Boards V001
Listed in NASA Earthdata CMR
This data set contains snow change measurements from interval boards collected as part of the NASA SnowEx20 time series field campaign.
Description
Surveys were conducted at field sites across the Western United States 9 December 2019 and 22 April 2020. Snow change measurements from interval boards record the height of new snow (HN) and snow water equivalent (SWE) over weekly, and in some cases biweekly, intervals.
Measurements were taken using a 30 cm Snowmetrics Snow Tube and spring scale. Interval boards were positioned nearby snow pit study areas and were checked during the collection of the <a href="doi.org/10.5067/KZ43HVLZV6G4">SNEX20 Time Series Snow Pit data</a>. During each visit, if new snow had accumulated on the board, three samples were collected before the board was cleared and placed at the top of the snow surface.
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Height of new snow was measured to the nearest 0.5 cm and SWE to the nearest mm. Observers also recorded a qualitative Yes/No regarding evidence of melt on the board. These data were collected to provide ground validation for the <a href="nsidc.org/data/snex_uavsar/versions/1"> airborne UAVSAR L-band flights</a>.
Although the variable is referred to as "height of new snow", it represents the change in snow height and SWE depth over a given interval and is therefore subject to snow settlement and/or melt between visits.
Links
Get the data
- nsidc.org /data/data-access-tool/SNEX20_TS_IB/versions/1 ↗
Search data by spatial and/or temporal ranges or file name. Choose from various download options, including a Python script.
download · from NASA CMR
- search.earthdata.nasa.gov /search/granules?p=C3834908328-NSIDC_CPRD ↗
Search and order NASA Earth Science data using spatial and temporal filters. Reformatting, reprojecting, and subsetting options are available for some data sets.
download · from NASA CMR
- cmr.earthdata.nasa.gov /virtual-directory/collections/C3834908328-NSIDC_CPRD ↗
Quickly download a few files using a web browser, or access data through a command-line utility such as WGET.
download · from NASA CMR
- earthaccess.readthedocs.io /en/stable ↗
A Python library to search and access NASA Earth science data with just a few lines of code
download · from NASA CMR
Where it is published
- DOI doi.org/10.5067/mq7gagklwg7o ↗
Provides access to data, documentation, tools, citation information, support, and other resources.
landing page · documentation · DOI / persistent id · from NASA CMR
Documentation and papers
- nsidc.org /sites/default/files/documents/technical-reference/snex20_ts_ib… ↗
SnowEx20 Time Series Snow Change Measurements from Interval Boards, Version 1 Technical Reference
documentation · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C3834908328-NSIDC_CPRD.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C3834908328-NSIDC_CPRD.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- GROUND-BASED OBSERVATIONS · Snow Depth · Snow Water Equivalent · SWE Sampler
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C3834908328-NSIDC_CPRD | 7 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:swe-sampler | 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-water-equivalent | 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 | |
| created_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| publication_date | 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 |