GUIDE WAVE ANALYSIS AND FORECASTING - WMO

24
GUIDE TO WAVE ANALYSIS AND FORECASTING
TABLE 2.4
Geostrophic wind table
Speed is given (in knots) as a function of latitude and distance (in degrees of latitude)
for 4 hPa change in pressure; pressure is 1015.0 hPa; temperature is 285 K; density is 0.001241 gm/cm 3
Dist. Latitude (°)
(°lat.) 20 25 30 35 40 45 50 55 60 65 70
1.0 113 92 77 68 60 55 51 47 45 43 41
1.1 103 83 70 61 55 50 46 43 41 39 37
1.2 94 76 65 56 50 46 42 39 37 36 34
1.3 87 70 60 52 46 42 39 36 34 33 32
1.4 81 65 55 48 43 39 36 34 32 31 29
1.5 75 61 52 45 40 37 34 32 30 28 27
1.6 71 57 48 42 38 34 32 30 28 27 26
1.7 67 54 46 40 35 32 30 28 26 25 24
1.8 63 51 43 38 33 30 28 26 25 24 23
1.9 60 51 43 38 33 30 28 26 25 24 23
2.0 57 46 39 34 30 27 25 24 22 21 21
2.1 54 44 37 32 29 26 24 23 21 20 20
2.2 51 42 35 31 27 25 23 21 20 19 19
2.3 49 40 34 29 26 24 22 21 19 19 18
2.4 47 38 32 28 25 23 21 20 19 18 17
2.5 45 37 31 27 24 22 20 19 18 17 16
2.6 44 35 30 26 23 21 19 18 17 16 16
2.7 42 34 29 25 22 20 19 18 17 16 15
2.8 40 33 28 24 22 20 18 17 16 15 15
2.9 39 32 27 23 21 19 17 16 15 15 14
3.0 38 31 26 23 20 18 17 16 15 14 14
3.1 37 30 25 22 19 18 16 15 14 14 13
3.2 35 29 24 21 19 17 16 15 14 13 13
3.3 34 28 23 20 18 17 15 14 14 13 12
3.4 33 27 23 20 18 16 15 14 13 13 12
3.5 32 26 22 19 17 16 14 14 13 12 12
3.6 31 25 22 19 17 15 14 13 12 12 11
3.7 31 25 21 18 16 15 14 13 12 12 11
3.8 30 24 20 18 16 14 13 12 12 11 11
3.9 29 23 20 17 15 14 13 12 11 11 11
4.0 28 23 20 17 15 14 13 12 11 11 10
4.2 27 22 18 16 14 13 12 11 11 10 10
4.4 26 21 18 15 14 12 11 11 10 10 9
4.6 25 20 17 15 13 12 11 10 10 9 9
4.8 24 19 16 14 13 11 11 10 9 9 9
5.0 23 18 15 14 12 11 10 9 9 9 8
5.2 22 18 15 13 12 11 10 9 9 8 8
5.4 21 17 14 13 11 10 9 9 8 8 8
5.6 20 16 14 12 11 10 9 8 8 8 7
5.8 20 16 13 12 10 9 9 8 8 7 7
6.0 19 15 13 11 10 9 8 8 7 7 7
6.2 18 15 12 11 10 9 8 8 7 7 7
6.4 18 14 12 11 9 9 8 7 7 7 6
6.6 17 14 12 10 9 8 8 7 7 6 6
6.8 17 13 11 10 9 8 7 7 7 6 6
7.0 16 13 11 10 9 8 7 7 6 6 6
8.0 14 11 10 8 8 7 6 6 6 5 5
9.0 13 10 9 8 7 6 6 5 5 5 5
10.0 11 9 8 7 6 5 5 5 4 4 4