Meteorology 400/800

 

 

Laboratory Exercise 2

 

 

Radiosonde Code and Sounding Plot

 

 

 

 

 

 

 

 

 

 

Insert in ringed-three hole binder.  Work not

turned in in binder will not be accepted.

 

Point deductions for sloppy or late work.

 

 

 

 

 

 

 

 

 

 

 

 


 

 

PROCEDURE

 

Supporting Reading


 

The TLH sounding below can be decoded using the reading as a guide.  As you read through the readings you will find that the information following the TTAA group represents the mandatory level information;  that following the TTBB group represents the significant level information;  that following the PPBB group represents the winds aloft information.

TTAA 67121 72214 99019 24003 36003 00187 23803 08511 92872 22205 18017
85605 18221 17516 70245 09861 15514 50595 06969 14501 40766 17363 18004
30975 32156 12002 25101 42356 30503 20248 54356 32514 15427 65156 35013
10668 72556 04025 88113 73356 03024 77999 51515 10164 00051 10194 15515 17013=

TTBB 67120 72214 00019 24003 11000 23803 22979 24603 33891 19412
44885 20630 55784 13816 66737 12257 77714 10457 88706 10462 99642
04661 11610 01250 22569 01756 33561 02519 44557 02756 55549 03160
66539 04345 77527 05356 88516 05763 99502 06763 11496 06771 22490
07562 33482 08173 44473 09362 55442 11772 66408 16370 77387 19361
88381 20356 99378 20557 11376 20564 22370 21156 33358 22759 44352
23567 55320 28167 66293 33544 77271 37557 88175 61756 99113 73356
11100 72556 31313 01102 81102=

PPBB 67120 72214 90012 36003 15017 17517 90346 18517 18016 17015
90789 17012 17512 17013 91124 15014 15513 16512 916// 16507 9205/
14001 18004 9305/ 09501 29002 94039 32513 32013 01017 9504/ 02019
03024=

TTCC 67125 72214 70881 66757 09520 50087 60358 08536 88999
77999=

TTDD 6712/ 72214 11978 72556 22838 71156 33792 67157 44339
54163=

PPDD 67120 72214 95579 04025 04525 08526 96247 09518 07020 07535
9705/ 09535 08535=


(Truncated)

 

For the mandatory level information, there is a way of helping yourself (visually) from getting too confused.  From the reading in the reading you will note that the "67121" represents the station designator in WMO code for Tallahessee, Florida.  This information is repeated in the fourth group on the right (top line).  Immediately after this will come station pressure or height, temperature, dewpoint depression, wind direction and speed information for each of the MANDATORY LEVELS (see your Lab 1).  Put parentheses around these groups to visually separate them. 

 

Here is an  example of what I mean:

 

Mandatory Level Data, KOAK sounding, 10/2/09, 12 UTC:

USUS46 KMTR 021200

MANOAK

72493 TTAA 52121 72493 99014 13656 03003 00119 16860 15503

92787 19678 35001 85507 15071 35007 70122 05668 30509 50578

12766 27529 40744 25556 28023 30947 39559 27534 25070 47960

26540 20214 55159 26055 15396 59159 25070 10645 64558 26043

88210 55359 26047 88121 64958 26066 77145 25571 40906 31313

58708 81100 51515 10164 00009 10194 03001 31511=

 

 

                            Date/Time                           Surface data                                             1000 mb data

72493 TTAA 52121 72493 (99014 13656 03003) ( 00119 16860 15503 )

            925 mb data                  850 mb data                      700 mb data

(92787 19678 35001) ( 85507 15071 35007) (70122 05668 30509) etc

 

The information contained in the sounding is used to plot the weather information at different levels. Check

out the KOAK weather information plotted on the 850 mb, 700 mb, and 500 mb plots, respectively, and the

KOAK hodograph. We'll explore the latter using the program RAOB.

 

The balance of reading is devoted to a detailed step by step guide on decoding raw soundings.

Using the reading as a guide, decode the sounding by completing the tables on the following pages.

 

Plot the sounding on the Skew-T Log P diagram distributed (in xerox form) in class. 

MAFMANMAF

72265 TTAA  60121 72265 99914 22232 16508 00065 ///// /////

92762 ///// ///// 85499 20850 20028 70158 11267 21013 50587

06750 26515 40757 18546 24015 30966 33161 26014 25091 43959

27026 20237 56158 27031 15416 63759 26044 10659 69360 27012

88114 72359 28024 77999

MAFSGLMAF

72265 TTBB  6012/ 72265 00914 22232 11874 20015 22844 20656

33826 22265 44774 18060 55754 16869 66689 10060 77683 09665

88669 08263 99632 04023 11596 00624 22560 01550 33556 01559

44538 03356 55528 03960 66522 04357 77514 05160 88506 06347

99465 10557 11457 11545 22441 13557 33411 17523 44381 21356

55365 23535 66336 27935 77288 34962 88106 71960

PPBB  60120 72265 90034 16508 17011 18531 90678 21023 22014

21013 909// 20515 91246 22513 25513 24513 92035 26514 23515

24015 93015 25514 26012 26522 9436/ 28038 26547 9504/ 27032

28012

 

 

 

 


 

 

 

Mandatory Level Information

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Station Location

 

 

 

 

 

 

 

 

Date/Time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Surface

 

850 mb

 

400 mb

 

200 mb

 

Other Info:

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

 

Temperature

 

Temperature

 

Temperature

 

Temperature

 

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

 

Wind Direction

 

Wind Direction

 

Wind Direction

 

Wind Direction

 

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

 

 

 

 

 

 

 

 

 

 

1000 mb

 

700 mb

 

300 mb

 

150 mb

 

 

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

 

Temperature

 

Temperature

 

Temperature

 

Temperature

 

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

 

Wind Direction

 

Wind Direction

 

Wind Direction

 

Wind Direction

 

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

 

 

 

 

 

 

 

 

 

 

925 mb

 

500 mb

 

250 mb

 

100 mb

 

 

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

 

Temperature

 

Temperature

 

Temperature

 

Temperature

 

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

 

Wind Direction

 

Wind Direction

 

Wind Direction

 

Wind Direction

 

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

 

 


 

 

 

Significant Level Information

 

 

 

 

 

 

 

 

 

 

 

Station Location

 

 

 

 

 

 

Date/Time

 

 

 

 

 

 

 

 

 

 

 

 

 

Surface

 

Level 4

 

Level 8

 

Note: May be More

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

Information Given

Temperature

 

Temperature

 

Temperature

 

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

Continue Below as Needed:

 

 

 

 

 

 

 

Level 1

 

Level 5

 

Level 9

 

 

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

 

Temperature

 

Temperature

 

Temperature

 

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

 

 

 

 

 

 

 

 

Level 2

 

Level 6

 

Level 10

 

 

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

 

Temperature

 

Temperature

 

Temperature

 

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

 

 

 

 

 

 

 

 

Level 3

 

Level 7

 

Level 11

 

 

Height (or pressure)

 

Height (or pressure)

 

Height (or pressure)

 

 

Temperature

 

Temperature

 

Temperature

 

 

Dew Pt Depression

 

Dew Pt Depression

 

Dew Pt Depression

 

 

 

 

 

 

 


 

 

 

Winds Aloft Information

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Station Location

 

 

 

 

 

 

 

 

Date/Time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Surface

 

7000 feet

 

13000 feet

 

25000 feet

 

36000 feet

Wind Dir

 

Wind Dir

 

Wind Dir

 

Wind Dir

 

Wind Dir

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

 

 

 

 

 

 

 

 

3000 feet

 

8000 feet

 

14000 feet

 

26000 feet

 

38000 feet

Wind Dir

 

Wind Dir

 

Wind Dir

 

Wind Dir

 

Wind Dir

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

 

 

 

 

 

 

 

 

4000 feet

 

9000 feet

 

16000 feet

 

30000 feet

 

50000 feet

Wind Dir

 

Wind Dir

 

Wind Dir

 

Wind Dir

 

Wind Dir

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

 

 

 

 

 

 

 

 

6000 feet

 

12000 feet

 

20000 feet

 

35000 feet

 

52000 feet

Wind Dir

 

Wind Dir

 

Wind Dir

 

Wind Dir

 

Wind Dir

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed

 

Wind Speed