GLASS Daytime All-Wave Net Radiation Product: Algorithm Development and Preliminary Validation

作者:Jiang, B (Jiang, Bo)[ 1,2 ] ; Liang, SL (Liang, Shunlin)[ 1,2,3 ] ; Ma, H (Ma, Han)[ 1,2 ] ; Zhang, XT (Zhang, Xiaotong)[ 1,2 ] ; Xiao, ZQ (Xiao, Zhiqiang)[ 1,2 ] ; Zhao, X (Zhao, Xiang)[ 1,2 ] ; Jia, K (Jia, Kun)[ 1,2 ] ; Yao, YJ (Yao, Yunjun)[ 1,2 ] ; Jia, AL (Jia, Aolin)[ 1,2 ]

REMOTE SENSING

卷: 8  期: 3

DOI: 10.3390/rs8030222

出版年: MAR 2016

摘要

Mapping surface all-wave net radiation (R-n) is critically needed for various applications. Several existing R-n products from numerical models and satellite observations have coarse spatial resolutions and their accuracies may not meet the requirements of land applications. In this study, we develop the Global LAnd Surface Satellite (GLASS) daytime R-n product at a 5 km spatial resolution. Its algorithm for converting shortwave radiation to all-wave net radiation using the Multivariate Adaptive Regression Splines (MARS) model is determined after comparison with three other algorithms. The validation of the GLASS R-n product based on high-quality in situ measurements in the United States shows a coefficient of determination value of 0.879, an average root mean square error value of 31.61 Wm(-2), and an average bias of -17.59 Wm(-2). We also compare our product/algorithm with another satellite product (CERES-SYN) and two reanalysis products (MERRA and JRA55), and find that the accuracy of the much higher spatial resolution GLASS R-n product is satisfactory. The GLASS R-n product from 2000 to the present is operational and freely available to the public.

通讯作者地址: Jiang, B (通讯作者)

Beijing Normal Univ, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China.

通讯作者地址: Jiang, B (通讯作者)

Beijing Normal Univ, Sch Geog, Beijing 100875, Peoples R China.

地址:

[ 1 ] Beijing Normal Univ, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China

[ 2 ] Beijing Normal Univ, Sch Geog, Beijing 100875, Peoples R China

[ 3 ] Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA