Show simple item record Petropoulos, George Ireland, Gareth Srivastava, Prashant K. Ioannou Katidis, Pavlos 2015-06-04T21:02:10Z 2015-06-04T21:02:10Z 2014
dc.identifier.citation Petropoulos , G , Ireland , G , Srivastava , P K & Ioannou Katidis , P 2014 , ' An appraisal of soil moisture operational estimates accuracy from SMOS MIRAS using validated in-situ observations acquired at a Mediterranean environment. ' International Journal of Remote Sensing , vol. 35 , no. 13 , pp. 5239-5250 . en
dc.identifier.issn 0143-1161
dc.identifier.other PURE: 5472599
dc.identifier.other PURE UUID: f2ad48e5-8527-4f0e-a90c-34925bc0e92d
dc.identifier.other Scopus: 84905046248
dc.identifier.other 2160/29546
dc.identifier.uri en
dc.description.abstract Acquiring information on the spatio-temporal variability of soil moisture is of key importance in extending our capability to understand the Earth system’s physical processes, and is also required in many practical applications. Earth observation (EO) provides a promising avenue to observe the distribution of soil moisture at different observational scales, with a number of products distributed at present operationally. Validation of such products at a range of climate and environmental conditions across continents is a fundamental step related to their practical use. Various in situ soil moisture ground observational networks have been established globally providing suitable data for evaluating the accuracy of EO-based soil moisture products. This study aimed at evaluating the accuracy of soil moisture estimates provided from the Soil Moisture and Ocean Salinity Mission (SMOS) global operational product at test sites from the REMEDHUS International Soil Moisture Network (ISMN) in Spain. For this purpose, validated observations from in situ ground observations acquired nearly concurrent to SMOS overpass were utilized. Overall, results showed a generally reasonable agreement between the SMOS product and the in situ soil moisture measurements in the 0–5 cm soil moisture layer (root mean square error (RMSE) = 0.116 m3 m−3). An improvement in product accuracy for the overall comparison was shown when days of high radio frequency interference were filtered out (RMSE = 0.110 m3 m−3). Seasonal analysis showed highest agreement during autumn, followed by summer, winter, and spring seasons. A systematic soil moisture underestimation was also found for the overall comparison and during the four seasons. Overall, the result provides supportive evidence of the potential value of this operational product for meso-scale studies and practical applications. en
dc.format.extent 12 en
dc.language.iso eng
dc.relation.ispartof International Journal of Remote Sensing en
dc.rights en
dc.subject SMOS en
dc.subject soil moisture en
dc.subject operational products en
dc.subject ISMN en
dc.subject REMEDHUS en
dc.title An appraisal of soil moisture operational estimates accuracy from SMOS MIRAS using validated in-situ observations acquired at a Mediterranean environment. en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.description.version authorsversion en
dc.contributor.institution Department of Geography and Earth Sciences en
dc.description.status Peer reviewed en 18-07-20

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