186 



MALKUS 



[CHAP. 4 



Wymon Data 



(a) 



R= 69 ot 10.8 knots 



(b) 



R = 84° at 7 knots 



Scole of Wind Percentages 



Weather Stiip "C" 



Pilot Chart 

 February Av. 



(d) / 



Pilot Chort 

 March Av. 



» -®— ^ 



R = 15 ot 16 knots 



R = 237 at 19 knots 



R = 237°ot 17 knots 



.^ 



Tq-T, (°C) 



Fig. 44. Conditions for test computations of oceanic shearing stress. 



(a-e) Wind roses : Length of arrow proportional to percentage of time wind blows 

 from each compass direction. Barbs (one for each Beaufort number) give mean strength 

 of wind in that directional range. Figure at center is percentage of calms. R is vector 

 resultant wind. 



(a) Wind rose from Wyman research vessel in tropics (19° 30'N, 66°W) April, 1946. 



(b) Mean climatological wind rose for April for location of Wyman research vessel. 

 (After U.S. Hydrographic Office Pilot Charts.) 



(c) Wind rose constructed from Weather Ship C data February 26-March 19, 1960. 



(d) Mean climatological wind rose for February for location of Weather Ship C 

 (52° 45'N, 35" 30'W). (After U.S. Hydrographic Office Pilot Charts.) 



(e) Mean climatological wind rose for March for location of Weather Ship C. (After 

 U.S. Hydrographic Office Pilot Charts. ) 



(f ) Histogram of air-sea temperature difference in °C at Weather Ship C, February 

 26-March 19, 1960. 



