Estimating Basin-Scale Water Budgets with SMAP Soil Moisture Data.

ABSTRACT: Soil Moisture Active Passive (SMAP) Level-2 soil moisture retrievals collected during 2015-2017 are used in isolation to estimate 10-day warm-season precipitation and streamflow totals within 145 medium-sized (2,000-10,000 km²) unregulated watersheds in the conterminous United States. The precipitation estimation algorithm, derived from a well documented approach, includes a locally-calibrated loss function component that significantly improves its performance. For the basin-scale water budget analysis, the precipitation and streamflow algorithms are calibrated with two years of SMAP retrievals in conjunction with observed precipitation and streamflow data and are then applied to SMAP retrievals alone during a third year. While estimation accuracy (as measured by the square of t

SUBMITTER: Koster RD 

PROVIDER: S-EPMC6179158 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature