COSMOS-UK: the UK national soil moisture measurement network – surface observations for EO Cal/Val applications

Evans, Jonathan ORCID: https://orcid.org/0000-0003-4194-1416; Szczykulska, Magdalena. 2022 COSMOS-UK: the UK national soil moisture measurement network – surface observations for EO Cal/Val applications. [Speech] In: The UK National Earth Observation Conference 2022, Leicester, 6-8 Sept 2022.

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Slideshow (COSMOS-UK: The UK National Soil Moisture Measurement Network – EO Cal/Val Applications) UKEO_3P_177_Evans_JG_COSMOS-UK_v2.pdf - Presentation Download (1MB) | Preview

Abstract/Summary

The COSMOS-UK network delivers high quality continuous near real-time monitoring of soil moisture and meteorological variables across the whole of the UK, at 48 long-term field-monitoring locations, from 2013 ongoing. UKCEH operate the network on behalf of the Natural Environment Research Council (NERC), as part of their National Capability programme, for the benefit of the national academic research community and the private sector. Research grade datasets are publically available for comparison with EO products as a ground based calibration and validation (Cal/Val) network. A range of in situ data are available, focusing on large area (0.1 km2) soil moisture measurements using Cosmic Ray Neutron Sensors (CRNS), as well as point soil moisture measurements at various soil depths; and when applicable the CRNS is used to derive snow water equivalent. Phenology camera imagery is processed to provide greenness products, cropping patterns, and other vegetation and land use changes; upwelling longwave radiation measurements can be related to land surface temperatures in addition to soil temperature profiles from near surface to 50 cm soil depth. Shortwave radiometers give albedo and cloudiness. Sonic anemometers not only provide wind speed and direction, but are also processed to give sensible heat fluxes, and evapotranspiration is estimated as the residual of the land surface energy balance using net radiation and soil heat flux measurements. The suite of data is an invaluable resource in testing EO products, primarily for SAR and other combined EO soil moisture products, and with great potential for further Cal/Val applications.

Item Type:	Publication - Conference Item (Speech)
UKCEH and CEH Sections/Science Areas:	Hydro-climate Risks (Science Area 2017-)
Additional Keywords:	soil moisture, earth observation
NORA Subject Terms:	Hydrology Agriculture and Soil Science Meteorology and Climatology Data and Information
Related URLs:	https://cosmos.ceh.ac.uk/
Date made live:	20 Mar 2023 11:52 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/534233

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