Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/20.500.11765/11676
Decorrelation of satellite precipitation estimates in space and time
Título : Decorrelation of satellite precipitation estimates in space and time
Autor : Tapiador, Francisco J.Marcos Martín, Cecilia ORCID RESEARCHERID Autor AEMETNavarro Martínez, AndrésJiménez Alcázar, AlfonsoMoreno Galdón, RaulSanz, Julia
Palabras clave : Precipitation; Geostationary microwave sensors; Polar systems
Fecha de publicación : 2018
Editor: MDPI
Citación : Remote Sensing. 2018, 10(5), 752
Versión del editor: https://dx.doi.org/10.3390/rs10050752
Resumen : Precise estimates of precipitation are required for many environmental tasks, including water resources management, improvement of numerical model outputs, nowcasting and evaluation of anthropogenic impacts on global climate. Nonetheless, the availability of such estimates is hindered by technical limitations. Rain gauge and ground radar measurements are limited to land, and the retrieval of quantitative precipitation estimates from satellite has several problems including the indirectness of infrared-based geostationary estimates, and the low orbit of those microwave instruments capable of providing a more precise measurement but suffering from poor temporal sampling. To overcome such problems, data fusion methods have been devised to take advantage of synergisms between available data, but these methods also present issues and limitations. Future improvements in satellite technology are likely to follow two strategies. One is to develop geostationary millimeter-submillimeter wave soundings, and the other is to deploy a constellation of improved polar microwave sensors. Here, we compare both strategies using a simulated precipitation field. Our results show that spatial correlation and RMSE would be Little affected at the monthly scale in the constellation, but that the precise location of the maximum of precipitation could be compromised; depending on the application, this may be an issue.
Patrocinador: Funding from projects CGL2013-48367-P, CGL2016-80609-R (Ministerio de Economía y Competitividad, Ciencia e Innovación) is gratefully acknowledged.
URI : http://hdl.handle.net/20.500.11765/11676
ISSN : 2072-4292
Colecciones: Artículos científicos 2015-2018


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