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Snow water equivalent estimates using cosmic-ray neutron sensors in the United Kingdom (2014-2019)

This dataset provides daily estimates of the Snow Water Equivalent (SWE) using data from 46 COSMOS-UK sites across the United Kingdom. One set of estimates is derived from the cosmic ray neutron sensor and provides an estimate of the average SWE within the sensor’s large (>100m) footprint. Other SWE estimates are based on either a snowmelt model, or, for certain sites, either a snow depth sensor or a buried 'SnowFox' neutron sensor. Additionally, daily neutron counts, the albedo, and a collectio

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What's in it

Data offered docs-verified
daily SWE estimates (CRNS-derived, from 46 COSMOS-UK sites) · SWE from snowmelt model · SWE from snow depth sensor (certain sites) · SWE from buried SnowFox neutron sensor (certain sites) · daily neutron counts · albedo · per-snow-event figures
Coverage docs-verified
United Kingdom (46 COSMOS-UK sites) · 2014-12-10 to 2019-04-05
Resolution docs-verified
Spatial: 10000 m as listed in metadata (CRNS footprint >100 m); temporal: daily
Formats docs-verified
CSV · PNG
Access docs-verified
Open access under the Open Government Licence (OGL); whole dataset downloadable as a zip package; no auth stated

Useful for

Use cases llm-inferred
Winter water balance context for FRA baselines in snow-affected upland catchments · Calibration or validation of hydrological models using SWE inputs for UK catchments · Snow-event analysis to support winter flood risk or drainage assessments
Audience llm-inferred
hydrologists · flood risk consultants · water resources engineers · climate and environmental scientists

Limitations

Constraints llm-inferred
Temporal extent ends 2019-04-05, so data are not current · Typical SWE uncertainty (1 SD) stated as under about 4 mm for CRNS and SnowFox, 4 mm for depth-based and 5 mm for snowmelt model · Spatial resolution metadata (10000 m) differs from the stated CRNS footprint (>100 m), so point-scale comparability should be checked · Snow days are detected from albedo effects, so only detected snow days are listed
Licence
Open government licence
Authentication
Unknown — review source docs
GitHub stars
Unknown
Last commit
Unknown
Last successful page check
16/10/2026
Page health
healthy
Package
Not recorded
Verification
Not independently verified

Provenance & evidence

Listed in ukceh-eidc public catalogue API on 2026-10-16; relevance/value screened (haiku).

Metadata observed 14/10/2026 · research sweep: sweep-2026-10-16 (ukceh-eidc)