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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