On the Earth's surface energy exchange determination from ERS satellite ATSR data: Part 2. Short-wave radiation
On the Earth's surface energy exchange determination from ERS satellite ATSR data: Part 2. Short-wave radiation
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DOI：
10.1080/014311600750037462
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发表时间：
2000-01
影响因子：
3.4
通讯作者：
Yong Xue;D. Llewellyn-Jones;S. Lawrence;C. Mutlow
中科院分区：
文献类型：
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作者：
Yong Xue;D. Llewellyn-Jones;S. Lawrence;C. Mutlow
这是讨论根据 ERS 卫星沿轨扫描辐射计 (ATSR) 数据确定地球表面能量交换的系列论文中的第二篇。该论文主要研究海洋和陆地表面的短波辐射。本文采用三种方法利用 ERS ATSR-2 数据来确定太阳辐照度。我们将它们称为“D 方案”、“T 方案”和“O 方案”。对三个方案进行了比较。该计划适用于陆地和海域。可见光和近红外反射率是通过使用Xue和Cracknell开发的大气辐射传输模型从ERS-2 ATSR-2光谱带得出的。通过使用加权平均方案将窄带反射率组合成表面反照率的测量值。该计划适用于英国的陆地和海域以及巴西的森林砍伐地区。 D方案可以给出太阳光谱辐照度，但由于传感器可见光波段的波长限制，不能给出宽带太阳辐照度。 T方案和O方案可以给出良好的宽带太阳辐照度，但不能给出太阳光谱辐照度。 O 方案由 Oberhuber 开发，用于为 GCM 创建气候数据集。 O 方案还包括湿度和表面温度的影响。 O 方案更适合用于日或月平均太阳辐射。还可以开发其他两种方案来确定每小时或每天的太阳辐照度。结果表明，现在可以从 ATSR-2 数据中获取长期表面太阳辐照度，这可用于气候和水文研究。然而，我们当前的分析仅限于小范围的条件，需要扩展到更大的数据集。
This is the second in a series of papers which discusses determination of the Earth's surface energy exchange from ERS satellite Along-Track Scanning Radiometer (ATSR) data. The paper concentrates on short-wave radiation on sea and land surfaces. In this paper, three methods were used to determine solar irradiance by using ERS ATSR-2 data. We referred to them as 'D scheme', 'T scheme' and 'O scheme'. Intercomparisons of the three schemes were carried out. The schemes were applied to the land and sea areas. The visible and near-infrared reflectances were derived from ERS-2 ATSR-2 spectral bands by using the atmospheric radiative transfer model developed by Xue and Cracknell. The narrowband reflectances are combined into a measure of surface albedo by use of a weighted averaged scheme. The schemes were applied to the land and sea areas in UK and deforestation area in Brazil. The D scheme can give solar spectral irradiance but can not give broadband solar irradiance because of the wavelength limit of sensor visible bands. The T scheme and O scheme can give good broadband solar irradiance but can not give solar spectral irradiance. The O scheme was developed by Oberhuber, which was used to create climatological datasets for GCMs. The O scheme also includes the effects of humidity and surface temperature. The O scheme is better used for daily or monthly averaged solar radiation. The other two schemes can also be developed to determine the hourly or daily solar irradiance. The results show that it is now possible to derive longterm surface solar irradiance from ATSR-2 data which can be useful in climate and hydrological studies. However, our current analysis is restricted to a small range of conditions and needs to be extended to a larger dataset.