文献类型：期刊文献

英文题名：Combined Effects of the ENSO and the QBO on the Ozone Valley over the Tibetan Plateau

作者：Chang, Shujie[1,2];Li, Yongchi[1];Shi, Chunhua[3];Guo, Dong[3,4]

机构：[1]Guangdong Ocean Univ, Key Lab Climate Resources & Environm Continental, South China Sea Inst Marine Meteorol, Coll Ocean & Meteorol,Dept Educ Guangdong Prov,La, Zhanjiang 524088, Peoples R China;[2]Minist Nat Resources, Key Lab Space Ocean Remote Sensing & Applicat, Beijing 100081, Peoples R China;[3]Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Joint Int Res Lab Climate & Environm Change ILCEC, Key Lab Meteorol Disaster,Minist Educ KLME, Nanjing 210044, Peoples R China;[4]Nanjing Univ Informat Sci & Technol, Reading Acad, Nanjing 210044, Peoples R China

年份：2022

卷号：14

期号：19

外文期刊名：REMOTE SENSING

收录：SCI-EXPANDED(收录号：WOS:000867280500001)、、EI(收录号：20224212984773)、WOS

基金：This research was funded by the National Natural Science Foundation of China (42005063), Integration Project of the National Natural Science Foundation of China Major Research Program (91837311), Major Projects of the National Natural Science Foundation of China (42192512), Program for Scientific Research Start-Up Funds of Guangdong Ocean University (060302032107), Projects (Platforms) for Construction of Top-Ranking Disciplines of Guangdong Ocean University (231419022), Guangdong Provincial College Innovation Team Project (2019KCXTF021) and First-Class Discipline Plan of Guangdong Province (080503032101 and 231420003).

语种：英文

外文关键词：ozone valley; Tibetan Plateau; ENSO; QBO

外文摘要：The El Nino-Southern Oscillation (ENSO) and the quasi-biennial oscillation (QBO) are two major interannual variations observed in the tropics, yet the joint modulation of the ENSO and QBO on the ozone valley over the Tibetan Plateau (TP) in summer has not been performed. This study investigates the combined effects of the ENSO and the QBO on the interannual variations of the ozone valley over the TP using the ERA5 reanalysis data from 1979 to 2021. The results show that the ENSO leads the zonal deviation of the total column ozone (TCO*) over the TP by about 6 months. This means the TCO* in the summer of the following year is affected by the ENSO in the current year. This is consistent with the theory of recharge oscillation. In terms of dynamic conditions, the anomalous circulation resulting from the combined effect of El Nino and the easterly phase of the QBO (EQBO) lead to strengthened and upward anomalies of the South Asian high (SAH) over the TP, followed by reduced ozone valley with more negative anomalies over the TP in summer. As to thermodynamic conditions, affected by both El Nino and the EQBO, the atmospheric stability shows positive anomalies from the lower troposphere to the upper troposphere, and the positive anomaly areas are larger than those in other conditions. These findings indicate an unstable atmosphere, where convection is more likely to cause ozone exchange. The turbulent mixing of ozone at low levels and high levels leads to the ozone valley over the TP, with more negative anomalies in the upper troposphere and lower stratosphere (UTLS).