Method and system for processing atmospheric temperature and humidity profiles under cloud cover
A technology of atmospheric temperature and coverage, applied in meteorology, using multiple variables to indicate weather conditions, measuring devices, etc., can solve the problems of low resolution of temperature and humidity profiles, affecting the scope of application, etc.
Active Publication Date: 2018-01-12
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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[0004] This application provides a method and system for processing atmospheric temperature and humidity profiles under cloud cover, which is used to solve the problem that the resolution of atmospheric vertical temperature and humidity profiles in existing microwave remote sensing data is too low and affects its application range
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[0027] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0028] refer to figure 1 , which shows the flow of an embodiment of the method for processing atmospheric temperature and humidity profiles under cloud cover in the present application. This preferred method embodiment includes the following steps:
[0029] Step S101: interpolating the atmospheric temperature and humidity profile of the passive microwave remote sensing data according to the vertical air pressure of the atmospheric temperature and humidity profile of the optical remote sensing data under clear sky conditions, so that the two are matched layer by layer in the vertical direction;
[0030] In a further preferred embodiment, the optical remote sensing data can be selected from MODIS data, and...
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The application provides an atmospheric temperature and humidity profile line processing method under the cloud cover and a system thereof. The method comprises the steps that interpolation is performed on microwave atmospheric temperature and humidity profile lines according to vertical atmospheric pressure of atmospheric temperature and humidity profile lines of optical remote sensing data under the condition of clear sky; the following steps are cyclically performed on each microwave image element with the microwave image elements acting as units: whether the current microwave image elements are all covered by clouds is judged, the atmospheric temperature and humidity profile lines under the clouds within a current microwave image element area are substituted by passive microwave remote sensing data profile lines after interpolation if the judgment result is yes; and the degree of the cloud cover of the current microwave image element area is calculated by utilizing cloud mask data in the optical remote sensing data if the judgment result is no, and fusion calculation is performed on all layers of the atmospheric temperature and humidity profile lines under the clouds according to temperature fusion parameters and humidity fusion parameters respectively so that the atmospheric temperature and humidity profile lines under the clouds within the microwave image element area are generated. With application of the aforementioned method, fusion of the optical and microwave data profile lines can be realized.
Description
technical field [0001] The present application relates to the technical field of remote sensing data processing, in particular, to a method and system for processing atmospheric temperature and humidity profiles under cloud cover. Background technique [0002] Optical remote sensing refers to the remote sensing technology in which the working band of the sensor is in the optical band range. The atmospheric profile with high spatial resolution can be obtained through optical remote sensing data. However, since optical sensors, such as MODIS (MODerate resolution Imaging Spectroradiometer), can only work in the optical band, it is difficult to penetrate clouds, and only obtain atmospheric data under clear sky conditions. [0003] Microwave remote sensing is a remote sensing technology in which the working wavelength of the sensor is in the microwave spectrum region. The working mode of microwave remote sensing includes active microwave remote sensing (active) and passive microw...
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IPC IPC(8): G01W1/02
CPCG01W1/02
Inventor 王天星施建成姬大彬
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI