Analysis of correlation between sea ice concentration and cloudiness in the central Arctic

Ji Xupeng; Zhao Jinping

doi:10.3969/j.issn.0253-4193.2015.11.009

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Ji Xupeng, Zhao Jinping. Analysis of correlation between sea ice concentration and cloudiness in the central Arctic[J]. Haiyang Xuebao, 2015, 37(11): 92-104. doi: 10.3969/j.issn.0253-4193.2015.11.009

Citation:

Ji Xupeng, Zhao Jinping. Analysis of correlation between sea ice concentration and cloudiness in the central Arctic[J]. Haiyang Xuebao, 2015, 37(11): 92-104. doi: 10.3969/j.issn.0253-4193.2015.11.009

Ji Xupeng, Zhao Jinping. Analysis of correlation between sea ice concentration and cloudiness in the central Arctic[J]. Haiyang Xuebao, 2015, 37(11): 92-104. doi: 10.3969/j.issn.0253-4193.2015.11.009

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Analysis of correlation between sea ice concentration and cloudiness in the central Arctic

doi: 10.3969/j.issn.0253-4193.2015.11.009

Key Laboratory of Physical Oceanography, Ministry of Education, Ocean University of China, Qingdao 266100, China

Received Date: 2015-04-16

Abstract

Abstract

Correlation between sea ice concentration and cloudiness in the central Arctic is studied. The running correlation coefficients of daily sea ice concentration averaged for whole central Arctic with the daily averaged low cloud, medium cloud and high cloud are calculated. During the melting period in spring (April and May) and the freezing period in autumn (October and November), sea ice concentration and low cloud present significant negative correlation. This could be explained that the low clouds were formed by strong evaporation from the open water in gaps of sea ice during these periods. In the same period, sea ice concentration is negatively correlated with medium cloud only during the freezing period in autumn, which suggests that in autumn the low cloud could upwell to form medium cloud, but in spring the upwell is much week because of its stable stratification. There is no a significant correlation between sea ice concentration and high cloud, which is speculated that sea ice can't influence the high cloud and the high cloud is not formed by local eveporation and the influence of high cloud on sea ice is not ice concentration, but is ice thickness. In the periods of significant correlation between ice concentration and low cloud, there still exist some occasional inconsistent betweeen them. The exchanges of sea ice or cloud between the central Arctic and adjacent regions is suggested to cause the inconsistent.
- central Arctic Ocean,
- sea ice concentration,
- cloudiness,
- running correlation

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References(26)

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