| 1988年8月下旬南极平流层暴发性增温及其与臭氧的关系 |
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| 引用本文： | 邹捍.1988年8月下旬南极平流层暴发性增温及其与臭氧的关系[J].极地研究,1990,2(2):61-66. |
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| 作者姓名： | 邹捍 |
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| 作者单位： | 中国科学院大气物理研究所 北京 |
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| 摘 要： | 本文利用昭和基地(69°00′S,39°35′E)的探空和臭氧原始资料,分析研究了1988年8月下旬的一次南极平流层暴发性增温过程。本文分析了这一增温过程中的臭氧总量、30hPa气温、增温率及西风风速的变化关系。发现在这次南极冬季平流层暴发性增温中30hPa气温、30hPa西风风速与臭氧总量之间存在着非常好的正相关,同时发现臭氧总量的变化与30hPa增温率的变化之间存在着滞后关系。而在平流层发生暴发性增温之前,在对流层有一次大的西风扰动。由此,可以认为这次平流层暴发性增温的原因可能是对流层西风扰动引起的行星波上传,而臭氧的加热不可能是这次平流层暴发性增温的原因。
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| 关 键 词： | 暴发性增温 臭氧 西风扰动 南极 |
STRATOSPHERIC SUDDEN WARMING AND ITS RELATIONSHIP WITH OZONE ON ANTARCTICA IN AUGUST, 1988 |
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| Zou Han.STRATOSPHERIC SUDDEN WARMING AND ITS RELATIONSHIP WITH OZONE ON ANTARCTICA IN AUGUST, 1988[J].Chinese Journal of Polar Research,1990,2(2):61-66. |
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| Authors: | Zou Han |
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| Abstract: | An attempt was made to study the stratospheric sudden warming on Antarctica in August, 1988. In this paper, the variations in total ozone, 30hPa temperature, 30hPa 24-hour temperature change and westly wind are given by using a processing of original data provided by Japanese Antarctic Research Expedition 29 (JARE29).
From the preliminary analysis, it's obvious that a sudden warming occurs in lower
stratosphere over Syowa Station, in which the 30hPa temperature increases by 40.9℃,
from-71.1℃ to-30.2℃, in the period of August 26-30, and maximum 24-hour warming
reaches 21.7℃/day.
From correlation analysis, good correlations between 30hPa temperature, 30hPa westly wind and total ozone in this sudden warming period are found. In the period of Aug.
15-Sep. 6, 1988, the correlation coefficient of 30 hPa temperature is 0.96 with total ozone and 0.88 with 30 hPa westly wind. This result is very close to that former authors got.
In ordor to study the ozone heating role in this sudden warming, the correlation between 30hPa 24-hour temperature variation and total ozone is studied. The correlation is quite different from that between 30 hPa temperature and total ozone. The high correlation coefficient disappears. It's only about 0.03. But during August 15-Sep. 6, the correlation coefficient between 4-day delayed total ozone and 30hPa temperature variation looks to be high, reaching 0.64. This fact means that the ozone heating effect is not the cause of the sudden warming in this period. The ozone variation is only caused by the fluctuation of circulation due to the sudden warming.
In order to study the other cause of the sudden warming, for the transfer of planetary-wave enegy, a correlation between the all-layer westly wind speed and sohPa warming is analysed. It can be found that the all-layer westly wind occurs on about August 22,1988, 5-day before the date of the sudden warming. According to the theory of planetary wave, all-layer westly wind supplies the situation for planetary wave in troposphere transferring to stratosphere. The transferring planetary wave energy causes the sudden warming. Therefore, the all-layer westly wind may shows a possibility that the direct cause for this sudden warming is upward transfer of planetary wave in troposphere.
Because there is not grided data used in this paper, the further research should be needed to prove the effect of the upward transferring planetary wave on the sudden warming in the stratosphere of Antarctica. |
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| Keywords: | sudden warming ozone westly wind Antarctica |
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