TY - JOUR
T1 - On the Use of Threshold for the Ground Validation of Satellite Rain Rate
AU - Yoon, Jungsoo
AU - Yoo, Chulsang
AU - Ha, Eunho
N1 - Publisher Copyright:
Copyright © 2015 Jungsoo Yoon et al.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2015
Y1 - 2015
N2 - Ground-truthing is a major problem in the satellite estimation of rain rate. This problem is that the measurement taken by the satellite sensor is fundamentally different from the one it is compared with on the ground. Additionally, since the satellite has the limited capability to measure the light rain rate exactly, the comparison should also consider the threshold value of satellite rain rate. This paper proposes a ground-truth design with threshold for the satellite rain rate. This ground-truth design is the generalization of the conventional ground-truth design which considered the only (zero, nonzero) and (nonzero, nonzero) measurement pairs. The mean-square error is used as an index of accuracy in estimating the ground measurement by satellite measurement. An application to the artificial random field shows that the proposed ground-truth design with threshold is valid as the design bias is zero. The same result is also derived in the application to the COMS (Communication, Ocean, and Meteorological Satellite) rain rate data in Korea.
AB - Ground-truthing is a major problem in the satellite estimation of rain rate. This problem is that the measurement taken by the satellite sensor is fundamentally different from the one it is compared with on the ground. Additionally, since the satellite has the limited capability to measure the light rain rate exactly, the comparison should also consider the threshold value of satellite rain rate. This paper proposes a ground-truth design with threshold for the satellite rain rate. This ground-truth design is the generalization of the conventional ground-truth design which considered the only (zero, nonzero) and (nonzero, nonzero) measurement pairs. The mean-square error is used as an index of accuracy in estimating the ground measurement by satellite measurement. An application to the artificial random field shows that the proposed ground-truth design with threshold is valid as the design bias is zero. The same result is also derived in the application to the COMS (Communication, Ocean, and Meteorological Satellite) rain rate data in Korea.
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U2 - 10.1155/2015/254378
DO - 10.1155/2015/254378
M3 - Article
AN - SCOPUS:84937676300
VL - 2015
JO - Advances in Meteorology
JF - Advances in Meteorology
SN - 1687-9309
M1 - 254378
ER -