| 2017年夏季北冰洋浮冰区海雾特征分析 |
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| 引用本文： | 陈志昆,魏立新,李志强,刘凯,丁明虎.2017年夏季北冰洋浮冰区海雾特征分析[J].海洋预报,2019,36(2):77-87. |
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| 作者姓名： | 陈志昆 魏立新 李志强 刘凯 丁明虎 |
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| 作者单位： | 中国气象科学研究院,北京100081;国家海洋环境预报中心,北京100081;国家海洋环境预报中心,北京,100081;中国气象科学研究院,北京,100081 |
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| 基金项目： | 国家重点研发计划;国家重点研发计划;国家重点研发计划;基本科研业务费项目 |
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| 摘 要： | 首先利用中国第八次北极考察队期间获取的走航观测数据分析了环北极考察的海雾特征。接下来利用在北冰洋密集浮冰区海雾加密观测实验期间获取的GPS探空观测数据和NCEP再分析资料,研究了北冰洋浮冰区海雾生成的气象要素特征、边界层特征和大气环流形势特征,发现浮冰区冰雪面之上的冷空气穹丘使得大气易于达到饱和,为北冰洋不同种类海雾的出现造了有利条件。平流雾、辐射雾和蒸汽雾生消的机理和影响期间边界层气象特征各不相同,并且根据特定环流形势对3种海雾进行预报是可行的。
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| 关 键 词： | 北极浮冰区 海雾 GPS探空 边界层 |
Sea fog characteristics over the Arctic pack ice in summer 2017 |
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| CHEN Zhi-kun,WEI Li-xin,LI Zhi-qiang,LIU Kai,DING Ming-hu.Sea fog characteristics over the Arctic pack ice in summer 2017[J].Marine Forecasts,2019,36(2):77-87. |
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| Authors: | CHEN Zhi-kun WEI Li-xin LI Zhi-qiang LIU Kai DING Ming-hu |
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| Institution: | (Chinese academy of meteorological sciences,Beijing 100081 China;National Marine Environmental Forecasting Center,Beijing 100081 China) |
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| Abstract: | GPS radiosonde data and NCEP reanalysis data observed over the Arctic pack ice during the 8th Arctic Expedition in summer 2017 are used to characterize the sea fog and its source mechanisms. It is found that the atmosphere tends to saturate due to the cold air dome over the pack ice, which is favorable for the formation of sea fog. The formation and dissipation mechanism among advection fog, radiation fog and steam fog are different, so does the meteorological condition of the boundary layer when they occur. Three types of sea fog corresponded to different synoptic conditions at 500 hPa, which could be used to enhance the ability of sea fog forecasting. |
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| Keywords: | Arctic pack ice sea fog GPS radiosonde boundary layer |
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