期刊
出版社
ELSEVIER
DOI: 10.1016/j.jag.2021.102538
关键词
Shortwave radiation; Longwave radiation; Arctic; Antarctic; Qinghai-Tibet Plateau; Three poles; CERES-SYN; ERA5; MCD18A1; GLASS
资金
- National Natural Science Foundation of China (NSFC) [41771387, 42022008]
- Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) [311021008]
This study evaluates and compares the accuracy of eleven shortwave and seven longwave radiation products in the three poles, finding that CERES-SYN and ERA5 show overall better accuracy at daily and 1 degree x 1 degree resolutions in the polar regions.
Global warming has currently become a great concern to the international community, among which the three poles (the Arctic, Antarctic, and Qinghai-Tibet Plateau) are the most serious. In this paper, in order to improve the understanding of the matter and energy cycle in the three poles and even the world, eleven shortwave products, (namely, CERES-SYN, ERA5, MERRA-2, NCEP-CFSR, JRA-55, GLDAS, BESS_Rad, MCD18A1, ISCCPHXG-SSR, GLASS and APP-x), and seven longwave products, (CERES-SYN, ERA5, MERRA-2, NCEP-CFSR, JRA55, GLDAS, and APP-x) are evaluated and inter-compared in terms of accuracy. During the assessment, the ground measurements collected from four independent ground observation networks (BSRN, CEOP, TPDC, and NMC) are used as reference, and the being compared products are aggregated to the same spatial and temporal scales to make them comparable. To better examine their performance, the eleven radiation products are comprehensively compared in multiple spatial (original scale and 1 degrees x 1 degrees) and temporal scales (1-hourly, 3-hourly, daily, and monthly means, and instantaneous). The results show that in the three poles, CERES-SYN and ERA5 show overall better accuracy, at daily, 1 degrees x 1 degrees resolutions. The (r)bias and (r)RMSE are less than (3%)5 W/m2 and (23%)40 W/m2 for SWDR, and less than (3%)7 W/m(2) and (15%)25 W/m(2) for LWDR, respectively, over the polar regions (the Arctic and Antarctic), which are generally better than that of the Qinghai-Tibet Plateau for most products. The remote sensing products and reanalysis products have their own advantages and disadvantages at different regions. In addition, with the spatio-temporal resolution decreasing, the accuracy of radiation products will gradually increase, except for the products of MCD18A1, ISCCP-HXG-SSR, NCEP-CFSR and GLDAS.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据