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Table 2 Correspondence in zonal wind at the 850 hPa level over Hanoi to those over surrounding stations around Hanoi in heavy-rain days when rainfall is greater than 50 mm day −1 in at least one grid point within the analyzed region shown in Fig. 1a in either VnGP or GSMaP

From: Precipitation estimation performance by Global Satellite Mapping and its dependence on wind over northern Vietnam

    cPOD for    
Compared Latitude Longitude Smaller-u days Larger-u days Number of
radiosonde stations    at Hanoi at Hanoi analyzed days
Vinh 18 41’ 105 40’ 74% 75%   746  
Bach Long Vi 20 08’ 107 43’ 80% 86%   522  
Dien Bien Phu 21 24’ 103 01’ 83% 84%   762  
Nanning 22 38’ 108 13’ 79% 78%   1300  
Mengzi 23 23’ 103 23’ 59% 59%   1293  
Baise 23 54’ 106 36’ 68% 68%   1296  
  1. The analyzed months are May, June, July, and August from 2007 to 2017. We show values corresponding to probability of detection (cPOD) by regarding zonal wind component (u) at Hanoi and six compared stations surrounding Hanoi as observed and forecasted values, respectively. Categories for cPOD are larger and smaller than the u medians, which are decided for the heavy-rain days