Abstract We first verify the accuracy of water vapor products provided by the FY-4A satellite advanced geostationary radiation imager(AGRI) using radiosonde data. Then, we analyze the characteristics of water vapor anomaly changes using water vapor, land surface temperature and quantitative precipitation estimation provided by AGRI in the epicenter region of 2023-02-06 Türkiye earthquakes. The results show that: 1) The correlation coefficient between AGRI water vapor and radiosonde water vapor is 0.90, and the RMSE and mean bias are 2.51 mm and -0.06 mm respectively. 2) Prior to the earthquake, the variance of AGRI water vapor increased to 0.029~0.156 mm, with intensified fluctuations. After the earthquake, AGRI water vapor exhibited a distinct sharp rise and fall process. 3) Using the AGRI land surface temperature and quantitative precipitation estimation of AGRI data, we estimate that the reason for the water vapor anomaly may be that the increased thermal action of the ground after the earthquake caused water vapor to rise and form precipitation at the peak, resulting in a sharp drop in water vapor.
ZHOU Yi,WANG Xinzhi,XU Chang. Research on Water Vapor Anomaly of 2023-02-06 Türkiye Earthquakes Based on FY-4A AGRI Data[J]. jgg, 2023, 43(12): 1294-1299.
ZHOU Yi,WANG Xinzhi,XU Chang. Research on Water Vapor Anomaly of 2023-02-06 Türkiye Earthquakes Based on FY-4A AGRI Data[J]. jgg, 2023, 43(12): 1294-1299.