Climate Change Research ›› 2020, Vol. 16 ›› Issue (6): 706-713.doi: 10.12006/j.issn.1673-1719.2019.204

• Changes in Climate System • Previous Articles     Next Articles

The differences in the trends of ozone and atmospheric temperature in spring over the Tibetan Plateau

WANG Qing1,2, HUANG Fu-Xiang2,3(), XIA Xue-Qi1   

  1. 1 School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China
    2 National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China
    3 Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration, Beijing 100081, China
  • Received:2019-09-05 Revised:2019-10-22 Online:2020-11-30 Published:2020-12-03
  • Contact: HUANG Fu-Xiang E-mail:huangfx@cma.gov.cn

Abstract:

Based on the ozone remote sensing data of SBUV(/2), combined with ERA-Interim and MERRA-2 reanalysis data, the trends of ozone and atmospheric temperature in Lhasa and Gonghe were investigated in spring during 1979-2018. The results show that the reversal trend of ozone and atmospheric temperature in Lhasa and Gonghe both occurred in 1999. Compared with the overall ozone changing rate of the Tibetan Plateau after 2008 (4.5 DU/(10 a)), the rate of Lhasa is faster, which is 5.9 DU/(10 a), and the rate of Gonghe is relatively slow, which is 3.7 DU/(10 a). Since 1999, the atmospheric temperature in the lower stratosphere (100-30 hPa) in Lhasa and Gonghe in spring have increased with the rates of 0.5-1.4℃/(10 a) and 0.01-0.9℃/(10 a), respectively, while the atmospheric temperature in the upper troposphere (250-175 hPa) have decreased with the rates of 0.2-1.5℃/(10 a) and 0.2-1.2℃/(10 a), respectively. Compared with the overall atmospheric temperature change of the plateau in 2008, the temperature increase rate is slower than that of the lower stratosphere (125-70 hPa, 1-2℃/(10 a)), and faster than that of the upper troposphere (225-175 hPa, 0.4-1.1℃/(10 a)). In view of the correlation coefficient and regression coefficient between the temperature and ozone, the different recovery rates of ozone in Lhasa and Gonghe in spring after 1999 may lead to the different rates of stratospheric-tropospheric temperature reversal in the same period.

Key words: Total ozone, Vertical ozone profiles, Atmospheric temperature, Trends

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