基于Himawari-8氣象衛(wèi)星的東亞夏季冰云云頂特征分布

doi:10.12306/2020jms.0004

首頁 > 過刊瀏覽>2021年第41卷第1期 >50-59. DOI:10.12306/2020jms.0004

基于Himawari-8氣象衛(wèi)星的東亞夏季冰云云頂特征分布
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                        10.12306/2020jms.0004
                    
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中圖分類號(hào):P426.5
基金項(xiàng)目:國家自然科學(xué)基金資助項(xiàng)目（41590873）

The ice cloud top characteristic distributions over East Asia in summer based on Himawari-8 meteorological satellites

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利用Advanced Himawari Imager （AHI）/Himawari-8（HW8）云產(chǎn)品分析2017年夏季東亞地區(qū)不同下墊面條件對冰云云頂特征的影響，針對不同下墊面條件選擇了9個(gè)研究區(qū)域。結(jié)果表明，冰云最常出現(xiàn)在青藏高原和南亞季風(fēng)區(qū)。冰云的發(fā)生頻率存在南北遞減的趨勢，并在日本附近有高值中心。冰云云頂?shù)拇怪狈植几叨纫蕾囉诰暥龋送膺€有地形和海陸熱力差異的作用。青藏高原和南亞季風(fēng)區(qū)冰云最常發(fā)生在6~9 km和6~15 km；冰云云頂溫度在南北之間存在明顯差異，不同高度的冰云形成方式也存在不同；青藏高原和南亞季風(fēng)區(qū)的冰云光學(xué)厚度較高，且冰云光學(xué)厚度與發(fā)生頻率呈正相關(guān)。在冰云云頂屬性垂直分布中，中國東部冰云發(fā)生頻率相對于其他區(qū)域較低，冰云粒子半徑表現(xiàn)出隨高度增加先增大后減小的趨勢，海洋上的平均冰云粒子半徑相對于其他研究區(qū)域最大；在中國西部地區(qū)，冰云光學(xué)厚度存在雙峰結(jié)構(gòu)，而其他相對平坦的區(qū)域只有一個(gè)單峰。

Abstract:

The vertical distributions of ice clouds top properties in summer of 2017 were analyzed by using the Advanced Himawari Imager(AHI)/Himawari-8 (HW8) cloud products. Nine research areas were selected based on different terrain and land-sea aspects. Results show that ice clouds occur most frequently in the Tibetan Plateau and the South Asian monsoon region. There is a steep gradient of ice clouds occurrence frequency extending from southern to northern China. The vertical distributions of ice clouds top are highly dependent on latitude, in addition to the important roles of terrain, land-sea thermal contrast,and monsoons. In the Tibetan Plateau, the frequency of ice clouds top is maximum at 6 to 9 km,and in the monsoon region, ice clouds are widely distributed from 6 to 15 km. There is a significant difference of temperature of the ice clouds top between the north and the south. The Tibet Plateau and the monsoon region are consistent with the above studies, and the eastern part of China is lower than other research areas. The radius of ice cloud particles shows a trend of increasing first and then decreasing with height. The radius of ice cloud particles is the largest relative to other research areas over the ocean area. The double-peak structure of ice cloud optical thickness exists in western China, in other relatively flat areas, there is only one single peak.

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范學(xué)偉,鄭有飛,王立穩(wěn).基于Himawari-8氣象衛(wèi)星的東亞夏季冰云云頂特征分布.氣象科學(xué),2021,41(1):50-59 FAN Xuewei, ZHENG Youfei, WANG Liwen. The ice cloud top characteristic distributions over East Asia in summer based on Himawari-8 meteorological satellites. Journal of the Meteorological Sciences,2021,41(1):50-59

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收稿日期:2019-09-10
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在線發(fā)布日期: 2021-03-20
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