PROGRESS IN GEOGRAPHY ›› 2021, Vol. 40 ›› Issue (2): 304-313.doi: 10.18306/dlkxjz.2021.02.011

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Assessment of satellite-retrieved solar ultraviolet radiation in the Black Gobi desert of eastern Xinjiang

ZHAO Xueshang1,3, Hajigul Sayit2, Ali Mamtimin3, LIU Yongqiang1,*(), WANG Yu3, GAO Jiacheng1,3, YANG Fan3, HUO Wen3, ZHOU Chenglong3   

  1. 1. College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China
    2. Xinjiang Meteorological Society, Urumqi 830002, China
    3. Desert Meteorology Field Experiment Station of CMA, Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China
  • Received:2020-01-19 Revised:2020-05-19 Online:2021-02-28 Published:2021-04-28
  • Contact: LIU Yongqiang E-mail:lyqxju@163.com
  • Supported by:
    Central Scientific Research Institute of the Public Basic Scientific Research Business Professional, No(IDM2017001);National Natural Science Foundation of China, No(41875023);National Natural Science Foundation of China, No(41675011)

Abstract:

:In this study, we compared the 2017 ground-based surface ultraviolet radiation in the UVA and the UVB bands of the Hongliuhe Black Gobi desert in Hami region of eastern Xinjiang Autonomous Region with the CERES_SYN1 deg_Ed4A product data provided by the NASA Langley Research Center Atmospheric Science Data Center. The results show that: 1) On a daily scale, the coefficient of correlation between the ground-based and the satellite-retrieved UVA and UVB fluxes is above 0.9. The daily mean bias of the ground-based observed data and the satellite-retrieved UVA and UVB fluxes are 1.15 W·m -2 and 0.03 W·m -2 under all-sky conditions, and 0.93 W·m -2and 0.03 W·m -2under clear sky. 2) Seasonally, the difference of UVA and UVB observed and retrieved by satellite is the largest in the summer, at 2.04 W·m -2 and 0.05 W·m -2 respectively, followed by the spring and the winter, and is the smallest in the autumn. 3) The Hongliuhe area was greatly affected by aerosol optical depth (AOD) in the spring and the summer, showing a significant negative correlation. 4) The degree of ultraviolet radiation attenuation increases with the cloud cover. Under cloudy conditions, the mean bias of ground measurements and satellite-retrieved data of UVA and UVB are the largest, at 1.73 W·m -2 and 0.05 W·m -2 respectively.

Key words: Ultraviolet radiation, CERES data product, Black Gobi desert, Hongliuhe area