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Methodology to quantify the role of intense precipitation runoff in soil moisture scarcity: a case study in the U.S. South from 1980-2020
Título : Methodology to quantify the role of intense precipitation runoff in soil moisture scarcity: a case study in the U.S. South from 1980-2020
Autor : Smith, Robert KennedyGuijarro Pastor, José Antonio ORCID RESEARCHERID Autor AEMETChang, Der-ChenChen, Yiming
Palabras clave : Evapotranspiration; Precipitation; Runoff; Soil moisture
Fecha de publicación : 2022
Editor: Society of Agricultural Meteorology of Japan
Citación : Journal of Agricultural Meteorology. 2022, 78(2), p. 78‑87
Versión del editor: https://doi.org/10.2480/agrmet.D-21-00054
Resumen : The northern U.S. Gulf Coast is among the wettest regions in the contiguous United States, with a transition zone from humid to semi-arid climates occurring between the western Gulf Coast and the 100th meridian. As anthropogenic warming induces more frequent extreme wetting events of greater magnitude, a larger proportion of rainfall runs off unsaturated soils rather than being absorbed and replenishing vegetative water supply. This study introduced novel methodology reliant on reconstructed hourly precipitation intensity data from locations with comprehensive records from the past four decades, incorporating these records into a recursive algorithm measuring daily soil moisture levels. To account for runoff, curtailment multipliers for three different soil classes at each site were applied to 24-hour precipitation totals. Soil moisture balance was then obtained from daily evapotranspiration and infiltrated precipitation, and trends from the autoregressive time series modeling were compared.
URI : http://hdl.handle.net/20.500.11765/13635
ISSN : 1881-0136
0021-8588
Colecciones: Artículos científicos 2019-2022


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