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| 南极近地层大气的热量逆梯度输送现象 | |
| 引用本文： | 朱蓉,徐大海,卞林根,李宗恺.南极近地层大气的热量逆梯度输送现象[J].气象学报,2000,58(2):214-222. |
| 作者姓名： | 朱蓉 徐大海 卞林根 李宗恺 |
| 作者单位： | 1. 北京大学地球物理系,北京,100871 2. 中国气象科学研究院,北京,100081 3. 南京大学大气科学系,南京,210093 |
| 基金项目： | 国家自然科学基金!( 494 752 4 7和 4 973 51 80 )，国家南极“九五”攻关项目 |
| 摘 要： | 根据南极中山站观测结果 ,分析了南极地区近地层热量逆梯度输送的现象。结果表明南极地区在近地层逆温较明显时 ,常会出现热量逆梯度输送的现象 ;同时也探讨了近地层在稳定层结条件下 ,热量逆梯度输送通量的多尺度计算方法。计算结果表明 ,逆梯度输送的感热通量主要是由浮力湍涡的穿越能力决定的 ,而经典的梯度输送公式在该场合下无法使用。 |
| 关 键 词： | 逆梯度输送 热通量 湍涡 时间尺度 |
| 收稿时间： | 1998/3/30 0:00:00 |
| 修稿时间： | 1999/2/23 0:00:00 |
THE COUNTERGRADIENT HEAT FLUX IN THE ATMOS-PHERIC SURFACE LAYER IN THE SOUTH POLE |
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| Zhu Rong,Xu Dahai,Bian Lin''gen and Li Zongkai.THE COUNTERGRADIENT HEAT FLUX IN THE ATMOS-PHERIC SURFACE LAYER IN THE SOUTH POLE[J].Acta Meteorologica Sinica,2000,58(2):214-222. | |
| Authors: | Zhu Rong Xu Dahai Bian Lin'gen and Li Zongkai |
| Institution: | Department of Geophysics, Peking University, Beijing, 100871;Chinese Academy of Meteorological Sciences, Beijing, 100081;Chinese Academy of Meteorological Sciences, Beijing, 100081;Department of Atmospheric Sciences, Nanjing University, Nanjing, 210093 |
| Abstract: | Countergradient heat flux in the surface layer in South Pole is analyzed based on the data obtained from the field experiments near China Zhongshan Observatory in South Pole. The analyses show that the countergradient heat flux often occurs in the stable atmospheric surface layer even when the inversion strength is fairly strong. A multiscaling method of calculating the countergradient heat flux is also discussed at the stable stratification in the surface layer. The calculating result makes it known that the countergradient heat flux is mainly caused by the penetration of buoyancy turbulence eddy and the flux nearly is so independent to the temperature gradient that the classic gradient transfer formula is fail to be useful in that cases above stated. |
| Keywords: | Countergradient transfer Heat flux Turbulence eddy Time scale |
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