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1. chinaXiv:201703.00257 [pdf]

Precipitation Retrievals in typhoon domain combining of FY3C MWHTS Observations and WRF Predicted Models

HE Jieying; ZHANG Shengwei; LI Na
Subjects: Geosciences >> Space Physics

A passive sub-millimeter precipitation retrievals algorithm is provided based on Microwave Humidity and Temperature Sounder (MWHTS) onboard the Chinese Feng Yun 3C (FY-3C) satellite. Using the validated global reference physical model NCEP/WRF/ VDISORT), NCEP data per 6 hours are downloaded to run the Weather Research and Forecast model WRF, and derive the typical precipitation data from the whole world. The precipitation retrieval algorithm can operate either on land or on seawater for global. To simply the calculation procedure and save the training time, principle component analysis (PCA) was adapted to filter out the redundancy caused by scanning angle and surface effects, as well as system noise. According to the comparison and validation combing with other precipitation sources, it is demonstrated that the retrievals are reliable for surface precipitation rate higher than 0.1 mm/h at 15km resolution.

submitted time 2017-03-10 Hits753Downloads365 Comment 0

2. chinaXiv:201605.00290 [pdf]

RESEARCH ON GLOBAL PROFILES AND PRECIPITATION RETRIEVALS FOR FY-3C MWHTS

He, Jieying; Zhang, Shengwei
Subjects: Geosciences >> Space Physics

The paper develops a passive sub-millimeter atmospheric profile and precipitation retrievals algorithm for Microwave Humidity and Temperature Sounder (MWHTS) onboard the Chinese Feng Yun 3C (FY-3C) satellite. The retrieval algorithm employs a number of neural network estimators trained and evaluated using the validated global reference physical model NCEP/WRF/ARTS, and works for land and seawater with latitude between -30 to 30 degree. To simply the calculation procedure and save the training time, principle component analysis was adapted to filter out the redundancy caused by scanning angle and surface effects, as well as system noise. NCEP data per 6 hours are downloaded to run the Weather Research and Forecast model WRF, and derive the typical precipitation data from the whole world. The Atmospheric Radiative Transfer Simulator ARTS is feasible for performing simulations of atmospheric radiative transfer.

submitted time 2016-05-03 Hits885Downloads536 Comment 0

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