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INDIAN INSTITUTEOF

SCIENCEBANGALORE - 560012

ResearchProgram

EntrancePaper

:Atmospheric

Sciences

Paper Code : AS

Day & Date

SUNDAY, 25THAPRIL 2010

Time

9.00 A.M. TO 12.00 NOON

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19. 10mheight wind speed and direction respectively are 5 d s nd 225" at latitude of15"N overa tropical ocean. The wind direction at 1km height is likely to be(A) 270'(B) 180" .(C) 360'(D) 4 5 O

20. Latent heat flux from ocean at a certain time is measured as 250 W ma2.The rate ofevaporation inmmday-' is close to(A) 25.0@) 12.5(C) 8.4

(D) 9.6END OFPART A

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6. Change in ocean temperature, in absence ofadvection, depends on the net flux ofenergy at its surface. You have coIlected the following data on a given day: th e nctflux ofenergy into the oceanfom a1l sources except evaporation is 300W rn-2; Rateofevaporation st the occ&surface is 8 x l ~ - ~kg m-'