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arctic ozone loss in early spring and its impact on the stratospheretroposphere coupling

Earth and Planetary Physics 2022年第2期6卷 177-190页

作者： ShuYang Yu Jian Rao Dong Guo Key Laboratory of Meteorological Disaster Ministry of Education(KLME)/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science and TechnologyNanjing 210044China School of Atmospheric Science Nanjing University of Information Science and TechnologyNanjing 210044China Reading Academy Nanjing University of Information Science and TechnologyNanjing 210044China

The tropospheric impact of arctic ozone loss events is still *** this study we investigate that question,using the ERA5 reanalysis and long-term integration by a climate-chemistry coupled model(CESM2-WACCM).We begin with the frequency of arctic ozone loss *** average,such events occur once in early spring every 14−15 years in ERA5 data and in the model,both of which estimate that roughly 40%of the strong polar vortex events in March are coupled with arctic ozone loss,the remaining 60%being *** composite difference between the two samples might be attributed to the pure impact of the arctic ozone loss-that is,to ozone loss alone,without the concurrent impact of strong polar *** ozone loss is accompanied by an increase in total ozone in midlatitudes,with the maximum centered in the Central North *** arctic ozone loss events with pure strong polar vortex events that are uncoupled with ozone loss,observations confirm that the stratospheric Northern Annular Mode reverses earlier for the *** pure strong vortex events in early spring(without arctic ozone loss),the cold anomalies can extend from the stratosphere to the middle troposphere;when such events are strong,the near surface warm anomalies are biased toward the *** contrast,during the other 40%of strong early-spring polar vortex events,those coupled with ozone loss,a concurrent and delayed warming of the near surface over the arctic and its neighboring areas is observed,due to vertical redistribution of solar radiation by the change in the ozone.

关键词： arctic ozone loss strong polar vortex CESM2-WACCM historical run

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Record arctic ozone loss in Spring 2020 is Likely Caused by North Pacific Warm Sea Surface Temperature Anomalies

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Advances in Atmospheric Sciences 2021年第10期38卷 1723-1736页

作者： Yan XIA Yongyun HU Jiankai ZHANG Fei XIE Wenshou TIAN College of Global Change and Earth System Science Beijing Normal UniversityBeijing 100875China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100871China College of Atmospheric Sciences Lanzhou UniversityLanzhou 730000China

Record ozone loss was observed in the arctic stratosphere in spring *** study aims to determine what caused the extreme arctic ozone *** and simulation results are examined in order to show that the extreme arctic ozone loss was likely caused by record-high sea surface temperatures(SSTs)in the North *** is found that the record arctic ozone loss was associated with the extremely cold and persistent stratospheric polar vortex over February-April,and the extremely cold vortex was a result of anomalously weak planetary wave *** analysis reveals that the weak wave activity can be traced to anomalously warm SSTs in the North *** observations and simulations show that warm SST anomalies in the North Pacific could have caused the weakening of wavenumber-1 wave activity,colder arctic vortex,and lower arctic *** results suggest that for the present-day level of ozone-depleting substances,severe arctic ozone loss could form again,as long as certain dynamic conditions are satisfied.

关键词： arctic ozone loss stratospheric polar vortex sea surface temperature planetary-scale wave climate change

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Anomalously low ozone of 1997 and 2011 arctic spring: Monitoring results and analysis

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Advances in Polar Science 2012年第2期23卷 82-86页

作者： ZHANG Yan WANG Weihe LI Xiaojing ZHANG Xingying ZHENG Zhaojun LIU Ruixia Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites China Meteorological Admini-stration(LRCVES/CMA)Beijing 100081China National Satellite Meteorological Center China Meteorological AdministrationBeijing 100081China

Total ozone observations from the Total ozone Unit （TOU） aboard the Chinese second generation polar orbiting mete- orological satellite, Fengyun-3/A （FY-3/A）, revealed that total column ozone over the arctic declined rapidly from the beginning of March 2011. An extensive region of low column amount formed around mid March; monthly mean total column ozone in March 2011 was about 30% lower than the average observed during 1979-2010. Daily total column density of ozone near the center of low ozone area in mid March was less than 240 Dobson units, about half the total column ozone amount observed during the same period of the prior 10 years. We analyzed total column ozone data from different satellites during 1979-2011. Results show that the arctic depletion of ozone in spring 2011 was initiated by the cold polar vortex in the lower stratosphere. The March mean total ozone over the arctic has shown a decreasing trend over the past 32 years, and its variation is strongly correlated with the polar vortex. A similar low ozone process of spring 1997 was compared to that of 2011, but daily variations of total ozone in March over the Northern Hemisphere in 1997 and 2011 have different patterns.

关键词： arctic ozone loss polar vortex ozone hole polar stratospheric clouds

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