Preprints
https://doi.org/10.5194/amt-2022-282
https://doi.org/10.5194/amt-2022-282
 
14 Oct 2022
14 Oct 2022
Status: this preprint is currently under review for the journal AMT.

Long-term detection, mapping, and interpretation of the trend of ozone in China (1978–2020) by constructing long-term consistent ozone datasets

Rongqi Tang1, Xiaodan Wu1, Jingping Wang1, Dujuan Ma1, Qicheng Zeng1, Jianguang Wen2, and Qing Xiao2 Rongqi Tang et al.
  • 1College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
  • 2State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China

Abstract. The ozone distribution characteristics in the stratosphere or troposphere are worth to be clarified due to their positive/negative impact on climate and human health. Nevertheless, the vertical distribution characteristics of ozone in China have not been fully understood either due to the limited time period of individual satellite records or the inconsistency of the accuracy of ozone products between different satellite records. In response to this challenge, this study first identified the vertical sensitivity of AIRS in detecting trends and verified the sensitivity in the near ground using in-situ measurements. Moreover, these different satellite records were cross-validated in order to check their consistency. In order to construct long-term, consistent ozone datasets dating back to the 1970s was constructed by intercalibrating the ozone products of different satellites using the cumulative distribution function with consideration of the vertical sensitivity. The distribution of ozone in the stratosphere and troposphere was then identified at several altitude layers (i.e., 3 km, 5 km, 12 km, 26 km, 31 km, and 34 km) with obvious interannual variation. The results indicate the seasonal variation of ozone is more significant in the troposphere while the interannual variation of ozone is more significant in the stratosphere. The spatiotemporal variation of ozone in the stratosphere shows a strong dependence on altitudes, and opposite results can be found at different altitudes. The ozone in the troposphere does not present significant interannual variations but shows distinct regional distribution characteristics in the Qinghai Tibet Plateau and Inner Mongolia.

Rongqi Tang et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2022-282', Anonymous Referee #1, 14 Nov 2022
  • RC2: 'Comment on amt-2022-282', Anonymous Referee #2, 26 Nov 2022

Rongqi Tang et al.

Rongqi Tang et al.

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Short summary
The vertical distribution characteristics of ozone in China have not been fully understood. This study first identified the vertical sensitivity of AIRS in detecting trends and verified the sensitivity in the near ground using in-situ measurements. Then a consistent ozone datasets dating back to the 1970s was constructed. we found that the spatiotemporal variation of ozone in the stratosphere shows a strong dependence on altitudes, and opposite results can be found at different altitudes.