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| Lightning activity on the central Tibetan Plateau and its response to convective available potential energy | |
| 引用本文： | QIEXiushu R.Toumi 等. Lightning activity on the central Tibetan Plateau and its response to convective available potential energy[J]. 科学通报(英文版), 2003, 48(3): 296-299. DOI: 10.1007/BF03183302 |
| 作者姓名： | QIEXiushu R.Toumi 等 |
| 作者单位： | [1]ColdandAridRegionsEnvironmentalandEngineeringResearchInstitute.ChineseAcademyofSciences,Lanzhou730000,China [2]ColdandAridRegionsEnvironmentalandEngineeringResearchInstitute.ChineseAcademyofSciences,Lanz |
| 基金项目： | 国家自然科学基金，中国科学院资助项目 |
| 摘 要： | Lightning flash activities on the central Tibetan Plateau have been studied by using the satellite-based Lightning Imaging Sensor(LIS)database from January 1998 to July 2002.The lightning activity shows a clear diurnal variation on the central Plateau.The peak lightning activity appears at about 17:00 which is 3 h earlier than that in Jingxhou,Hubei in the same latitude belt nearby,indicating that the lightning activity is a sensitive indicator of solar heating on the Plateau.The lightning discharge is weaker on the Plateau than Jingzhou.Hubei and other low-altitude continental regions because of the lower convective available potential energy(CAPE)on the Plateau.The CAPE on the Plateau is 12 times lower than that in Jingzhou,Hubei,and 20 times lower than that in the sea-level region,such as Guangzhou and Florida.However,the sensitivity of lightning activity to CAPE changes on the Plateau is up to 30 times more sensitive than other prominent low-altitude regions. |
| 关 键 词： | 青藏高原中部 闪电活动 对流性电势能 卫星图片 气候资料 |
| 收稿时间： | 2002-09-25 |
Lightning activity on the central Tibetan Plateau and its response to convective available potential energy |
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| Xiushu Qie,R. Toumi,Yunjun Zhou. Lightning activity on the central Tibetan Plateau and its response to convective available potential energy[J]. Chinese science bulletin, 2003, 48(3): 296-299. DOI: 10.1007/BF03183302 | |
| Authors: | Xiushu Qie R. Toumi Yunjun Zhou |
| Affiliation: | QIE Xiushu1, R. Toumi2 & ZHOU Yunjun1 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Department of Physics, Imperial College, London SW7 2BZ, UK |
| Abstract: | Lightning flash activities on the central Tibetan Plateau have been studied by using the satellite-based Lightning Imaging Sensor (LIS) database from January 1998 to July 2002. The lightning activity shows a clear diurnal variation on the central Plateau. The peak lightning activity appears at about 17︰00 which is 3 h earlier than that in Jingzhou, Hubei in the same latitude belt nearby, indicating that the lightning activity is a sensitive indicator of solar heating on the Plateau. The lightning discharge is weaker on the Plateau than Jingzhou, Hubei and other low-altitude continental regions because of the lower convective available potential energy (CAPE) on the Plateau. The CAPE on the Plateau is 12 times lower than that in Jingzhou, Hubei, and 20 times lower than that in the sea-level region, such as Guangzhou and Florida. However, the sensitivity of lightning activity to CAPE changes on the Plateau is up to 30 times more sensitive than other prominent low-altitude regions. |
| Keywords: | Tibetan Plateau lightning activity optical radiance convective available potential energy. |
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