S-SEBI: A simple remote sensing algorithm to estimate the surface energy balance
S-SEBI: A simple remote sensing algorithm to estimate the surface energy balance
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DOI：
10.1016/s1464-1909(99)00128-8
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发表时间：
2000-01-01
期刊：
影响因子：
--
通讯作者：
Menenti, M
中科院分区：
文献类型：
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作者：
Roerink, GJ;Su, Z;Menenti, M
1997年8月在意大利托斯卡纳的Piano di罗西亚地区进行了一次小型的实地宣传活动。的辐射平衡和表面能量平衡的条款进行了测量的几种技术和几个现场。这些数据加上1997年8月23日同一地区的大地卫星TM图像，为深入研究从点到区域的辐射和能量通量之间的相互作用提供了极好的机会。一种新的方法来获得地表能量通量的遥感测量，称为简化的表面能量平衡指数（S-SEBI），开发，测试和验证与现有的数据。如果该地区的大气条件可以被认为是恒定的，并且该地区反映了地表水文条件的充分变化，则可以在除了遥感图像本身之外没有任何进一步信息的情况下计算通量。结果表明，相对简单的S-SEBI方法可以高精度地估计表面能量平衡参数。测量的和估计的蒸发分数值具有8%的最大相对差异。(C)2000 Elsevier Science Ltd.版权所有。
A small field campaign was conducted during August 1997 in the Piano di Rosia area in Tuscany, Italy. The terms of both the radiation balance and the surface energy balance were measured by several techniques and for several field sites. Together with a LANDSAT-TM scene of 23 August 1997 of the same area, these data give an excellent opportunity for a profound study of interaction between the radiation and energy fluxes from point to regional scale. A new method to derive the surface energy fluxes from remote sensing measurements, called the Simplified Surface Energy Balance Index (S-SEBI), is developed, tested and validated with the available data. If the atmospheric conditions over the area can be considered constant and the area reflects sufficient variations in surface hydrological conditions the fluxes can be calculated without any further information than the remote sensing image itself. The results of this case study show that with the relative simple S-SEBI method the surface energy balance parameters can be estimated with a high precision. The measured and estimated evaporative fraction values have a maximum relative difference of 8%. (C) 2000 Elsevier Science Ltd. Al rights reserved.