1. WATER VAPOR RETRIEVAL OVER CLOUD COVER AREA ON LAND Dabin Ji, Jiancheng Shi, Shenglei Zhang Institute for Remote Sensing Applications Chinese Academy of Sciences, China
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8. Sensitivity Analysis Using MODIS water vapor products (MOD07) under clear sky condition, the surface emissivities can be derived Relationships of surface emissivity at frequency 18.7 and 23.8GHz estimated from the South Great Plain in USA. V-POL H-POL V - H Jan, 2007
Make sure if there is microwave product from other sensors, such as SSMI, check NOAA sites
Is ΔTb 18.7 /ΔTb 23.8 used by other researchers? Or is it used only by us （ including Wang Yongqian)? 这个 ΔTb 18.7 /ΔTb 23.8 最早在 Deeter, M. N. 2007 提出，王永前师哥也是在此基础上做的。不是我们独创！
Are 23.5 GHz and 89 GHz commonly used for water vapor retrieval? I do not understand why it increases as water vapor increases? 1. 23.5GHz ， 89 GHz ， 37GHz ， 19GHz 等单通道，或他们的组合最要用于 SSM/I 反演海洋上空的水汽。主要是线性或多元线性回归的方法。 2. ……
Plot a histogram of estimated Δε 18.7 /Δε 23.8 由于没有空间，新放的直方图会覆盖原先的图，我让散点图和直方图分次进入，效果会好一些。 2007 年一月份的我放在了上一页，效果也是如此。
Why do we need to use 7-day average for cloudy case, one cloudy day in 7-days or need all 7-cloudy-days? Description of 1-D Microwave Radiative transfer Model (refs?) Is it used to generate LUT? 1 ）我在文献（ Thomas J. Greenwald, et al, 1997 ）中看到地表发射率在 7 天内是相对稳定的，所以对于某一天云覆盖地区，用同一区域相邻的 7 天的晴空下的数据的平均值来作为这一天云覆盖地区的估算值。 2 ） 1DMRTM 的介绍放在了下一页，参考文献也加上了。这里主要是用这个模型建立查找表，查找表包含 4 个字段：地表温度，地表发射率，大气透过率，以及对应的卫星接收到的亮温。每一个频率建立一个查找表。
When Δε 18.7 /Δε 23.8 fixed, water vapor does not change monotonously as ΔTb 18.7 /ΔTb 23.8 increasing? What is this mean? Have a figure to show?
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