| 2010年夏季北极冰情变化及大气环流场演变 |
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| 引用本文： | 隋翠娟,张占海,凌铁军,吴辉碇,于乐江.2010年夏季北极冰情变化及大气环流场演变[J].极地研究,2011,23(3):205-216. |
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| 作者姓名： | 隋翠娟 张占海 凌铁军 吴辉碇 于乐江 |
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| 作者单位： | 1. 国家海洋环境预报中心;
2. 中国极地研究中心;
3. 南京信息工程大学应用水文气象研究院 |
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| 基金项目： | 国家重点自然科学基金，863项目 |
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| 摘 要： | 利用美国冰雪中心(NSIDC)资料分析2010年夏季中国第4次北极科学考察期间北极海冰的冰情变化,并通过NCEP再分析资料对同时期的大气环流演变进行分析,发现6月与8月环流形势为偶极子正异常,加速了海冰的融化,其中2010年6月的海冰覆盖范围达到有历史记录以来的6月最低值;7月为低压控制,减缓了海冰覆盖范围的进一步减少...
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| 关 键 词： | 海冰范围海冰密集度偶极子异常EOF分析海冰漂移 |
| 收稿时间： | 2010-12-29 |
STATUS OF ARCTIC SEA ICE AND ATMOSPHERIC CIRCULATION IN SUMMER 2010 |
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| Sui Cuijuan,Zhang Zhanhai,Ling Tiejun,Wu Huiding,Yu Lejiang.STATUS OF ARCTIC SEA ICE AND ATMOSPHERIC CIRCULATION IN SUMMER 2010[J].Chinese Journal of Polar Research,2011,23(3):205-216. |
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| Authors: | Sui Cuijuan Zhang Zhanhai Ling Tiejun Wu Huiding Yu Lejiang |
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| Institution: | 1. National Marine Environmental Forecasting Center;
2. Polar Research Institute of China;
3. Applied Hydrometeorological Research Institute, Nanjing University of information Science & Technology |
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| Abstract: | Based on the data from National Sea Ice Data Center (NSIDC), we presented the Arctic sea ice extent and concentration during the Fourth Chinese Arctic Research Expedition 2010, and analyzed the corresponding atmospheric circulation using NCEP/NCAR reanalysis data. It was found that the positive dipole anomaly caused the increase of ice melt rates in June and August. The ice extent in June of this year reached the minimum of historical records in June. The melt rate was reduced in July due to the control of low pressure. In August, leads and polynyas presented in large area spanning the North Pole from Pacific Ocean to Atlantic Ocean where the ice concentration is lower than 80%. We therefore made the conclusion that the ice extent and concentration were significantly affected by the atmospheric circulation. Additionally, we also pointed out that the earlier clearing of sea ice along the Northwest Passage was caused by the abnormally higher temperature during springtime in the Canadian Arctic area. |
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| Keywords: | Ice drift |
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