| 污染大气边界层的长波冷却率模式 |
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| 引用本文： | 田文寿,陈长和,黄建国.污染大气边界层的长波冷却率模式[J].气象学报,1997,55(1):66-76. |
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| 作者姓名： | 田文寿 陈长和 黄建国 |
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| 作者单位： | 兰州大学大气科学系 |
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| 摘 要： | 考虑大气气溶胶在长波窗区的散射和吸收作用以及水汽的连续吸收作用，建立了一个适用于污染大气边界层的长波冷却率模式。计算结果表明：当单位面积气柱中气溶胶含量为７８５．９ｍｇ／ｍ２时，气溶胶的作用可使到达地面的长波向下辐射增大３９Ｗ／ｍ２。在大气窗区，大气气溶胶和水汽的连续吸收对长波冷却率的影响是同等重要的。在水汽含量和气溶胶浓度较大的大气边界层内，水汽连续吸收的冷却率最大时可达１．３Ｋ／ｄ，气溶胶的冷却率最大时可达到１．６６Ｋ／ｄ，二者对长波冷却率的贡献均不容忽视
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| 关 键 词： | 大气气溶胶，水汽连续吸收，长波冷却率 |
| 收稿时间： | 1995/6/22 0:00:00 |
| 修稿时间： | 1996/4/18 0:00:00 |
LONGWAVE COOLING RATE MODEL FOR POLLUTED ATMOSPHERIC BOUNDARY LAYER |
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| Tian Wenshou,Chen Changhe and Huang jianguo.LONGWAVE COOLING RATE MODEL FOR POLLUTED ATMOSPHERIC BOUNDARY LAYER[J].Acta Meteorologica Sinica,1997,55(1):66-76. |
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| Authors: | Tian Wenshou Chen Changhe and Huang jianguo |
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| Affiliation: | Department of Atmospheric Sciences of Lanzhou University, Lanzhou, 730000;Department of Atmospheric Sciences of Lanzhou University, Lanzhou, 730000;Department of Atmospheric Sciences of Lanzhou University, Lanzhou, 730000 |
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| Abstract: | Taking account of the scattering and absorption of atmospheric aerosol and water vapor continuum, a longwave cooling rate model for polluted atmospheric boundary layer was established in this paper. The calculated results show that the aerosol with a content of 785.9mg/m 2 leads to an increase of 39W/m in the surface downward infrared radiative flux.The effects of the atmospheric aerosol and continuum absorption on longwave cooling can be of equal importance.When the water contents and aerosol concentration are high in the atmospheric boundary layer, the maximum cooling rate due to water vapour continuum and aerosol can amount to 1.3K/d and 1.66K/d, respectively,and the contributions of aerosol and continuum absorption to longwave cooling rate can not be ignored. |
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| Keywords: | Atmospheric aerosol Water vapor continuum absorption Longwave cooling rate |
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