基于AMDAR資料應(yīng)用于中國周邊海域飛機(jī)顛簸的統(tǒng)計(jì)分析

doi:10.3969/2012jms.0157

首頁 > 過刊瀏覽>2014年第34卷第1期 >17-24. DOI:10.3969/2012jms.0157

基于AMDAR資料應(yīng)用于中國周邊海域飛機(jī)顛簸的統(tǒng)計(jì)分析
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                        10.3969/2012jms.0157
                    
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基金項(xiàng)目:國家自然科學(xué)基金資助項(xiàng)目（41275113）

AMDAR based statistical analysis on the features of cross-ocean airplane turbulence over China’s surrounding sea areas

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摘要:

基于2002—2011年共10 a的AMDAR資料，用于中國周邊海域（0 ~35 °N，110 ~150 °E）越洋飛行飛機(jī)顛簸的時(shí)空分布和變化規(guī)律分析。研究指出：南海比西北太平洋海域更容易發(fā)生重度以上的飛機(jī)顛簸；全年中6月最容易發(fā)生顛簸，而9月至次年2月發(fā)生重度和嚴(yán)重顛簸的百分率明顯減??；5 km以下，發(fā)生輕度和重度顛簸的百分率隨高度增大而減小，8 km以上重度顛簸的發(fā)生百分率穩(wěn)定在0.2%左右，邊界層頂和對流層頂附近容易發(fā)生嚴(yán)重顛簸，發(fā)生的百分率分別為0.27%和0.18%；隨著風(fēng)速增大發(fā)生顛簸的概率一般也增大，在對流層上層風(fēng)速大于40 m/s時(shí)，發(fā)生重度和嚴(yán)重顛簸的百分率都明顯增大，達(dá)到0.2%左右。冷半年風(fēng)向?yàn)镹NE以及暖半年風(fēng)向?yàn)镾SW時(shí)，發(fā)生重度顛簸的百分率達(dá)4%左右；嚴(yán)重顛簸發(fā)生在暖半年的概率較大，暖半年吹SSE至ESE風(fēng)時(shí)，發(fā)生百分率為0.25%~0.3%，但暖半年吹正北風(fēng)或冷半年吹正南風(fēng)時(shí)，也易發(fā)生嚴(yán)重顛簸。

Abstract:

Based on AMDAR data from 2002 to 2011, the spatial distribution and variation rule of cross-ocean airplane turbulence over China's surrounding sea areas(0-35 °N, 110-150 °E) are explored statistically. The result suggests that heavy airplane turbulence occurs more often in the South China Sea and the nearby sea areas than in the northwest Pacific; heavy airplane turbulence occurs most in June while the percentage of turbulence distinctly decreases from September to the next February; when the altitude is limited below 5 000 m, the percentage of heavy turbulences occurrence reduces with the airplane altitude increases, while planes fly to the altitude above 8 000 m, a stable percentage of heavy turbulences occurrence is about 0.2%; severe turbulence often occurs at the top of boundary layer(0.27%) and the tropopause(0.18%); the probability of airplane turbulence increases with wind speeds. When wind speed is greater than 40 m/s in the upper troposphere, the occurrence of heavy and severe turbulence increases significantly, reaching to about 0.2%. The percentage of heavy turbulence reaches about 4% when the wind direction is NNE in the cold half year and SSW in the warm half year. The severe turbulence occurs more often in the warm half year with a percentage of 0.25%-0.3% when the wind direction is from SSE to ESE. However, the severe turbulence occurs more easily in the due north direction in the warm half year than in the due south direction in the cold half year.

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吳炎成,周林,劉科峰,黃超凡,舒展.基于AMDAR資料應(yīng)用于中國周邊海域飛機(jī)顛簸的統(tǒng)計(jì)分析.氣象科學(xué),2014,34(1):17-24 WU Yancheng, ZHOU Lin, LIU Kefeng, HUANG Chaofan, SHU Zhan. AMDAR based statistical analysis on the features of cross-ocean airplane turbulence over China’s surrounding sea areas. Journal of the Meteorological Sciences,2014,34(1):17-24

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收稿日期:2012-09-04
最后修改日期:2012-11-02
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在線發(fā)布日期: 2014-02-21
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