Satellite-borne detection data global ocean rainfall type discrimination device and method

A technology for detecting data and oceans, applied in the field of microwave remote sensing, which can solve the problems of less rainfall radiation characteristics, mixing, and low resolution, and achieve the effect of overcoming the problem of rainfall type discrimination, improving diversification, and accurate and reliable calculation results.

Pending Publication Date: 2022-02-08
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the low observation resolution of the current on-orbit microwave instruments, the observation pixels are too large, an

Method used

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  • Satellite-borne detection data global ocean rainfall type discrimination device and method
  • Satellite-borne detection data global ocean rainfall type discrimination device and method
  • Satellite-borne detection data global ocean rainfall type discrimination device and method

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Embodiment 1

[0052] figure 1 It is a schematic diagram of the global ocean rainfall type discrimination device of the satellite-borne microwave imager of the present invention. In the embodiment of the present invention, in order to realize accurate precipitation type discrimination in the microwave imager pixel of the global ocean, the device implementation process includes the following modules, ocean rainfall Pixel discrimination module, data quality control module, rainfall index value calculation module, convective rain probability calculation module, data processing module and rainfall type discrimination module, in which:

[0053] The marine rainfall pixel discrimination module is used to obtain the L2 level marine rainfall product data of the microwave imager, and use the marine rainfall identification provided by the microwave imager L2 level marine rainfall product data to determine whether there is rain in the pixel of the microwave imager. If the imager pixel has rain, then the...

Embodiment 2

[0061] combine figure 1 and 2 As shown, the present invention also discloses a method for discriminating the type of global oceanic rainfall from spaceborne detection data, using the above-mentioned device for discriminating the type of global marine rainfall from spaceborne detection data, including the following steps:

[0062] Step 1: The marine rainfall discrimination module collects the marine rainfall product data of the microwave imager to form whether there is rain in the pixel of the microwave imager; if there is rain in the pixel, the rainy pixel point is passed to the data quality control module; No rain, pass the rain-free pixel to the rainfall type discrimination module;

[0063] Step 2: The marine data quality control module collects microwave imager brightness temperature data and active radar rainfall product data, performs data quality control and data matching, forms active and passive data sets, and passes the active and passive data sets to the rainfall in...

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Abstract

The invention discloses a satellite-borne detection data global ocean rainfall type discrimination device and method. The device comprises an ocean rainfall pixel discrimination module based on microwave imager ocean rainfall product data, a data quality control module in the ocean area based on satellite-borne microwave data, a rainfall type rain index value calculation module for observing brightness temperature based on a microwave imager, a convection rain probability calculation module in a microwave imager pixel, a data processing module for a rainfall index value data set and a tropospheric rainfall probability data set, and a rainfall type discrimination module in a microwave imager observation pixel. The influence factors of the microwave imager for observing the ocean surface rainfall type discrimination are disclosed, a new method is provided for research and development of business products such as rainfall types of the FY-3 microwave imager in China, and a foundation is laid for improving the subsequent rainfall inversion precision.

Description

technical field [0001] The invention relates to the field of microwave remote sensing, in particular to a device and method for discriminating global ocean rainfall types from satellite-borne detection data. Background technique [0002] Rainfall is the main source of power in the water cycle and is essential to human life. Tropical rainfall accounts for more than two-thirds of global rainfall, and latent heat is released / absorbed through phase changes corresponding to rainfall. Tropical rainfall provides the main energy source for global atmospheric circulation, so accurate estimates of tropical rainfall and its rainfall patterns are critical to enhancing our studies of Earth-atmosphere-hydrosphere system and atmospheric-scale climate change. Tropical rainfall often occurs as mesoscale convective systems characterized by a distinction between convective and stratiform regions. Convective regions range in size from a few kilometers to 30 kilometers, with strong updrafts an...

Claims

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Application Information

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IPC IPC(8): G01S13/95G01S13/86G01J5/48
CPCG01S13/95G01S13/86G01J5/00G01J2005/0077Y02A90/10
Inventor 张软玉孟婉婷李雪李恩晨王韶飞
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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