冶磊. 2017. 南极大陆沿岸地面臭氧损耗事件的研究[J]. 气象学报, ():-, doi:10.11676/qxxb2017.027
南极大陆沿岸地面臭氧损耗事件的研究
Study On Surface Ozone Depletion Episode On the Antarctic Coast
投稿时间:2016-07-15  最后修改时间:2016-10-28
DOI:10.11676/qxxb2017.027
中文关键词:  南极,臭氧损耗事件,冰间水道或冰间湖,活性溴
英文关键词:Antarctic, Ozone  Depletion Episode (ODE), open  leads or  polynyas, reactive  bromine
基金项目:
作者单位E-mail
冶磊 南京信息工程大学 blg@camscma.cn 
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中文摘要:
      利用南极大陆沿岸中山站2008-2013年的地面臭氧连续观测数据和相关资料,对地面臭氧损耗事件(Ozone Depletion Episode,ODE)进行研究。结果显示,春季南极中山站常发生ODE。在ODE发生期间,气象要素有明显的突变过程,包括温度明显下降,风向有偏东风转变为偏北风,风速随之下降。来自海冰区的偏北风增多,风速很小,使臭氧浓度维持在较低水平。ODE主要与南极沿岸海冰区的活性溴(BrO)浓度有关。春季南极大陆沿岸海冰冻融过程中形成的冰间水道和冰间湖,在低温的作用下会再次冻结,形成薄冰和霜花。卫星资料能够观测到薄冰区释放的活化海盐溴高浓度区,活性溴与臭氧发生化学反应过程形成ODE。其现象是在未受到人为影响的自然状态下发生的,与中高纬度地区光化学反应导致臭氧消耗有所不同。
英文摘要:
      Antarctic Ozone Depletion Episode (ODE) is studied based on the data observed surface ozone in Zhongshan station over Antarctic continent coast and relative data during 2008-2013. It is show that ODEs in spring is frequently occurred in Antarctic coast region. During ODEs, weather process has suddenly change, at the same time air temperature dropping, northerly wind with lower speed increasing from sea ice area. Happening of ODE is mainly related with reactive bromine (BrO) concentration of sea ice area. In spring, open leads and polynyas are formed by the freezing and thawing process of sea ice, then young ice and frost flower is produced by cool air onset on Antarctic coast. Satellite has monitored high concentration active bromine derived from sea salt released in young ice area, and reactive bromine react with ozone to account for ODE. The phenomenon is under natural condition without anthropic pollution, which is different from ozone depletion by photo-chemical reaction in mid-high latitudes.
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