TY - JOUR
T1 - Advances in the stochastic modeling of satellite-derived rainfall estimates using a sparse calibration dataset
AU - Greatrex, Helen
AU - Grimes, David
AU - Wheeler, Tim
N1 - Publisher Copyright:
© 2014 American Meteorological Society.
PY - 2014
Y1 - 2014
N2 - As satellite technology develops, satellite rainfall estimates are likely to become ever more important in the world of food security. It is therefore vital to be able to identify the uncertainty of such estimates and for end users to be able to use this information in a meaningful way. This paper presents new developments in the methodology of simulating satellite rainfall ensembles from thermal infrared satellite data. Although the basic sequential simulation methodology has been developed in previous studies, it was not suitable for use in regions with more complex terrain and limited calibration data. Developments in this work include the creation of a multithreshold, multizone calibration procedure, plus investigations into the causes of an overestimation of low rainfall amounts and the best way to take into account clustered calibration data.Acase study of the Ethiopian highlands has been used as an illustration.
AB - As satellite technology develops, satellite rainfall estimates are likely to become ever more important in the world of food security. It is therefore vital to be able to identify the uncertainty of such estimates and for end users to be able to use this information in a meaningful way. This paper presents new developments in the methodology of simulating satellite rainfall ensembles from thermal infrared satellite data. Although the basic sequential simulation methodology has been developed in previous studies, it was not suitable for use in regions with more complex terrain and limited calibration data. Developments in this work include the creation of a multithreshold, multizone calibration procedure, plus investigations into the causes of an overestimation of low rainfall amounts and the best way to take into account clustered calibration data.Acase study of the Ethiopian highlands has been used as an illustration.
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U2 - 10.1175/JHM-D-13-0145.1
DO - 10.1175/JHM-D-13-0145.1
M3 - Article
AN - SCOPUS:84907477343
SN - 1525-755X
VL - 15
SP - 1810
EP - 1831
JO - Journal of Hydrometeorology
JF - Journal of Hydrometeorology
IS - 5
ER -