Global climatologies of solar radiation budgets at the surface and in the atmosphere from 5 years of ERBE data
Global climatologies of solar radiation budgets at the surface and in the atmosphere from 5 years of ERBE data
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DOI：
10.1029/93jd00003
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发表时间：
1993-03
影响因子：
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通讯作者：
Zhanqing Li;H. Leighton
中科院分区：
文献类型：
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作者：
Zhanqing Li;H. Leighton
由于最近的卫星观测项目，对大气层顶部辐射收支的认识有了很大的提高。相比之下，对地表和大气辐射收支的了解几乎没有改善。基于简单的参数化方法，利用5年地球辐射收支实验资料和欧洲中期天气预报中心的湿度资料，建立了地表和大气太阳辐射收支的全球气候学。这两个数据集在2.5°× 2.5°网格上具有全球覆盖。地表太阳辐射收支的全球分布给出了副热带海洋净太阳辐射超过300 W m−2的最大季节值。大气中的最大季节吸收约为120 W m−2。还推导了地面和大气中的短波云强迫。云使季节平均地表净太阳辐射减少了175 W m−2，而使大气中的季节净太阳辐射增加了不到15 W m−2。大气和地表的全球和年平均净太阳辐射收支分别为83和157 W m−2。以大气顶部太阳辐射入射的百分比表示，这些值对应于大气和地表的全球和年平均吸收量分别为24.3%和46.0%，行星反照率为29.7%。
As a result of recent satellite-based observation programs, knowledge of the radiation budget at the top of the atmosphere has improved substantially. In comparison, there has been little improvement in knowledge of the radiation budgets at the surface and in the atmosphere. Based on a simple parameterization, global climatologies of the solar radiation budget at the surface and in the atmosphere are developed from 5 years of Earth Radiation Budget Experiment data and European Centre for Medium Range Weather Forecasts humidity data. Both data sets have global coverage on 2.5° × 2.5° grids. Global distributions of the solar radiation budget at the surface give maximum seasonal values of the net solar radiation for the subtropical oceans of more than 300 W m−2. The maximum seasonal absorption in the atmosphere is about 120 W m −2. Shortwave cloud forcing at the surface and in the atmosphere is also derived. Clouds reduce the seasonally averaged surface net solar radiation by up to 175 W m−2, whereas they increase seasonal net solar radiation in the atmosphere by less than 15 W m−2. The globally and annually averaged net solar radiation budgets in the atmosphere and at surface are 83 and 157 W m−2, respectively. Expressed as percentages of the solar radiation incident at the top of the atmosphere, these values correspond to a globally and annually averaged absorption in the atmosphere and at the surface of 24.3% and 46.0%, respectively, and a planetary albedo of 29.7%.