METR 2413 HOMEWORK ASSIGNMENT #2

DUE Wednesday January 28, 2004

This homework assignment is designed to familiarize you with how radiosonde data is coded, decoded and plotted.

Upper air data is available on rossby via the “Weather” command.

At the WEATHER> prompt

type ‘/UA’ to access the raw coded data.
type ‘/UADECODE’ to access tables of decoded observations

for Norman, type ‘oun l’ to get the latest sounding data.


Your assignment is to decode the following data:

TTAA 71123 72357 99981 00637 00000 00204 ///// /////
92834 02256 32508 85511 01917 30012 70044 05729 28029 50559
23961 27534 40719 34573 26560 30917 43971 26114 25037 52169
20180 57567 15363 56373 10615 64371 88183 59567 ///// 77298
26114 413// 51515 10164 00010 10194 32008 28523=

TTBB 71120 72357 00981 00637 11937 02257 22864 01507
33801 03900 44762 05701 55757 04529 66742 04111 77717 04523
88528 20950 99464 26969 11400 34573 22348 35977 33241 53768
44222 53567 55183 59567 66172 51970 77168 52172 88144 58172
99100 64371 31313 45202 81105 41414 856//=

PPBB 71120 72357 90023 00000 31009 33008 90467 31009 28517
27521 9089/ 28025 28028 91246 28034 28036 27534 919// 27534
92059 27543 26579 26113 9302/ 26114 26100=

TTCC 7112/ 72357 70833 67369 50036 66569 88999 77999=

TTDD 7112/ 72357 11977 64770 22940 63772 33902 62971 44849
64370 55/// ///// 66774 65570 77736 66369 88425 69169 99417
67969=

PPDD 71120 72357 XMTD =

The following link will assist you:
http://www.ems.psu.edu/Courses/Meteo200/lesson5/decode.htm

Decode the data above and plot on the skew-T ln p diagram given to you. Please list the pressure, temperature, dewpoint, wind speed, and wind direction as well as the height values for the mandatory levels. Locate any inversions on the skew-T.
You will hand in one sheet of decoded data and one skew-T diagram, with a cover sheet, stapled together.