A) What is the surface air pressure? B) What is the dewpoint temperature at 500

Question

A) What is the surface air pressure?

B) What is the dewpoint temperature at 500 mb?

C) At what pressure level would you find the tropopause?

D) Did this weather balloon pass through a cloud as it ascended?

E) What is the wind speed and direction of the fastest wind measured by the rawinsondes?

74560 ILX Lincoln 5 6 100 SLAT 40.15 SLON-89.33 SELV 178.0 SHOW 14.37 LIFT 14.53 LFTV 14.60 SWET 63.99 KINX 1.70 ???? 9.00 VTOT 21.00 TOTL 30.00 CAPE 0.00 CAPV 0.00 CINS 0.00 CINV 0.00 EQLV-9999 EQTV-9999 LFCT -9999 LFCV-9999 BRCH 0.00 BRCV 0.00 LCLT 262.1 LCLP 808.7 MLTH 278.5 MLMR 2.05 THCK 5346 PWAT 9.36 400 7040m 500 600 700 800 1422 753 1000 -70 -60 50 -40 -10 0 10 30 00Z 10 Mar 2018 University of Wyoming

Explanation / Answer

Answer:

From the above Skew-T diagram, we get the following informations:

A) The surface air pressure is little greater than 1000 mb.

B) The dew point temperature at 500 mb is -29o C.

C) At 150 mb pressure level, the tropopause is found because it has an average height of 10 km which corresponds to 7 miles.

D) Yes, the weather balloon passed through the clouds as it ascended. The cloud is generally present between 700 mb and 500 mb pressure levels, which is also true here as it is indicated by the closeness of dew point temperature curve (the left one) and temperature curve (the right one).

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