SNFILE Sounding data file $GEMPAK/data/hrcbob.snd
AREA Data area @chh
DATTIM Date/time 910820/0000
SNPARM Sounding parameter list brbk;tmpc;;hght;;dwpc
STNDEX Stability indices lift;kinx
LEVELS Vertical levels 300
VCOORD Vertical coordinate type thta
OUTPUT Output device (TPF) T
MRGDAT Merge data file flag/part type no
GEMPAK-SNLIST>r
STID = CHH STNM = 74494 TIME = 910820/0000
SLAT = 41.66 SLON = -69.96 SELV = 16.0
TTAA 0
PRES TMPC DWPC DRCT SPED HGHT
999.00 21.60 20.90 250.00 21.00 -9999.00
1000.00 -9999.00 -9999.00 -9999.00 -9999.00 7.00
850.00 14.20 11.70 275.00 38.00 1400.00
700.00 8.00 3.80 250.00 37.00 3026.00
500.00 -4.10 -23.10 240.00 31.00 5740.00
400.00 -15.50 -32.50 230.00 36.00 7470.00
300.00 -29.70 -43.70 215.00 38.00 9590.00
250.00 -37.90 -50.90 210.00 33.00 10860.00
200.00 -50.10 -9999.00 200.00 31.00 12360.00
150.00 -63.50 -9999.00 200.00 22.00 14180.00
100.00 -61.30 -9999.00 205.00 10.00 16680.00
TTBB 0
PRES TMPC DWPC
999.00 21.60 20.90
996.00 21.20 18.60
925.00 16.80 15.00
808.00 11.40 10.40
748.00 11.80 7.10
640.00 2.60 0.80
614.00 3.00 -3.00
602.00 4.00 -15.00
597.00 4.40 -15.60
521.00 -3.50 -22.50
500.00 -4.10 -23.10
238.00 -39.90 -51.90
187.00 -54.70 -9999.00
142.00 -65.30 -9999.00
129.00 -60.50 -9999.00
111.00 -64.70 -9999.00
100.00 -61.30 -9999.00
PPBB 0
HGHT DRCT SPED
0.00 250.00 21.00
1219.00 275.00 38.00
1829.00 270.00 38.00
2134.00 265.00 36.00
2438.00 260.00 35.00
2743.00 255.00 35.00
3048.00 250.00 37.00
3658.00 250.00 37.00
4267.00 250.00 35.00
4877.00 240.00 34.00
6096.00 235.00 30.00
7620.00 230.00 35.00
9144.00 215.00 39.00
10668.00 215.00 33.00
12802.00 195.00 29.00
15240.00 205.00 16.00
16459.00 205.00 12.00
TTCC 0
PRES TMPC DWPC DRCT SPED HGHT
70.00 -58.30 -9999.00 215.00 4.00 18910.00
TTDD 0
PRES TMPC DWPC
97.90 -59.90 -9999.00
79.70 -60.90 -9999.00
58.20 -56.30 -9999.00
PPDD 0
HGHT DRCT SPED
16764.00 205.00 10.00
18593.00 220.00 6.00
19812.00 140.00 3.00
Parameters requested: SNFILE,AREA,DATTIM,SNPARM,STNDEX,LEVELS,VCOORD,OUTPUT,
MRGDAT.
GEMPAK-SNLIST>
Now, let's list the data in merged format. I chose to calculate the Lifted
Index, the Showalter Index, and the K-Index. You may have chosen others from
the list in phelp stndex.
Note that if the data needed to calculate a stability index is not present,
the index will not be calculated.
SNFILE Sounding data file $GEMPAK/data/hrcbob.snd
AREA Data area @chh
DATTIM Date/time 910820/0000
SNPARM Sounding parameter list sped;drct;hght;tmpk
STNDEX Stability indices lift;show;kinx
LEVELS Vertical levels all
VCOORD Vertical coordinate type pres
OUTPUT Output device (TPF) T
MRGDAT Merge data file flag/part type yes
GEMPAK-SNLIST>r
SNPARM = PRES;SPED;DRCT;HGHT;TMPK
STNPRM = LIFT;SHOW;KINX
STID = CHH STNM = 74494 TIME = 910820/0000
SLAT = 41.66 SLON = -69.96 SELV = 16.0
STIM = 0
LIFT = 6.35 SHOW = 6.53 KINX = 25.80
PRES SPED DRCT HGHT TMPK
999.00 21.00 250.00 16.00 294.76
1000.00 -9999.00 -9999.00 7.00 -9999.00
996.00 21.36 250.54 42.19 294.36
925.00 30.33 263.72 680.10 289.96
868.26 38.00 275.00 1219.00 288.01
850.00 38.00 275.00 1400.00 287.36
808.00 38.00 270.03 1826.85 284.56
807.79 38.00 270.00 1829.00 284.56
778.93 36.00 265.00 2134.00 284.75
751.19 35.00 260.00 2438.00 284.94
748.00 35.00 259.42 2473.73 284.96
724.20 35.00 255.00 2743.00 283.11
700.00 37.00 250.00 3026.00 281.16
698.12 37.00 250.00 3048.00 281.00
647.98 37.00 250.00 3658.00 276.51
640.00 36.67 250.00 3759.48 275.76
614.00 35.56 250.00 4095.68 276.16
602.00 35.04 250.00 4255.87 277.16
601.18 35.00 250.00 4267.00 277.23
597.00 34.91 249.08 4323.67 277.56
557.19 34.00 240.00 4877.00 273.56
521.00 32.14 240.00 5415.35 269.66
500.00 31.00 240.00 5740.00 269.06
477.56 30.00 235.00 6096.00 266.71
400.00 36.00 230.00 7470.00 257.66
391.94 35.00 230.00 7620.00 256.66
318.72 39.00 215.00 9144.00 246.45
300.00 38.00 215.00 9590.00 243.46
256.99 33.00 215.00 10668.00 236.50
250.00 33.00 210.00 10860.00 235.26
238.00 32.56 207.80 11197.53 233.26
200.00 31.00 200.00 12360.00 223.06
187.00 29.03 195.08 12795.32 218.46
186.80 29.00 195.00 12802.00 218.42
150.00 22.00 200.00 14180.00 209.66
142.00 20.09 201.59 14515.71 207.86
129.00 16.74 204.38 15108.04 212.66
126.27 16.00 205.00 15240.00 212.06
111.00 13.39 205.00 16036.49 208.46
103.65 12.00 205.00 16459.00 210.69
100.00 10.00 205.00 16680.00 211.86
98.66 10.00 205.00 16764.00 212.75
97.90 9.89 205.40 16812.39 213.26
79.70 7.08 215.94 18096.64 212.26
73.63 6.00 220.00 18593.00 213.85
70.00 4.00 215.00 18910.00 214.86
60.69 3.00 140.00 19812.00 216.41
58.20 -9999.00 -9999.00 20076.46 216.86
Parameters requested: SNFILE,AREA,DATTIM,SNPARM,STNDEX,LEVELS,VCOORD,OUTPUT,
MRGDAT.
GEMPAK-SNLIST>
Now let's see that same data, but only on the mandatory pressure levels.
SNFILE Sounding data file $GEMPAK/data/hrcbob.snd
AREA Data area @chh
DATTIM Date/time 910820/0000
SNPARM Sounding parameter list sped;drct;hght;tmpk
STNDEX Stability indices lift;show;kinx
LEVELS Vertical levels man
VCOORD Vertical coordinate type pres
OUTPUT Output device (TPF) T
MRGDAT Merge data file flag/part type yes
GEMPAK-SNLIST>r
SNPARM = PRES;SPED;DRCT;HGHT;TMPK
STNPRM = LIFT;SHOW;KINX
STID = CHH STNM = 74494 TIME = 910820/0000
SLAT = 41.66 SLON = -69.96 SELV = 16.0
STIM = 0
LIFT = 6.35 SHOW = 6.53 KINX = 25.80
PRES SPED DRCT HGHT TMPK
999.00 21.00 250.00 16.00 294.76
1000.00 -9999.00 -9999.00 7.00 -9999.00
925.00 30.33 263.72 680.10 289.96
850.00 38.00 275.00 1400.00 287.36
700.00 37.00 250.00 3026.00 281.16
500.00 31.00 240.00 5740.00 269.06
400.00 36.00 230.00 7470.00 257.66
300.00 38.00 215.00 9590.00 243.46
250.00 33.00 210.00 10860.00 235.26
200.00 31.00 200.00 12360.00 223.06
150.00 22.00 200.00 14180.00 209.66
100.00 10.00 205.00 16680.00 211.86
Parameters requested: SNFILE,AREA,DATTIM,SNPARM,STNDEX,LEVELS,VCOORD,OUTPUT,
MRGDAT.
GEMPAK-SNLIST>
OK, now let's look at the same data, but this time on isentropic (theta) levels.
SNFILE Sounding data file $GEMPAK/data/hrcbob.snd
AREA Data area @chh
DATTIM Date/time 910820/0000
SNPARM Sounding parameter list sped;drct;hght;tmpk
STNDEX Stability indices lift;show;kinx
LEVELS Vertical levels all
VCOORD Vertical coordinate type thta
OUTPUT Output device (TPF) T
MRGDAT Merge data file flag/part type yes
GEMPAK-SNLIST>r
SNPARM = THTA;SPED;DRCT;HGHT;TMPK
STNPRM = LIFT;SHOW;KINX
STID = CHH STNM = 74494 TIME = 910820/0000
SLAT = 41.66 SLON = -69.96 SELV = 16.0
STIM = 0
LIFT = 6.35 SHOW = 6.53 KINX = 25.80
THTA SPED DRCT HGHT TMPK
294.84 21.00 250.00 16.00 294.76
294.70 21.36 250.54 42.19 294.36
296.49 30.33 263.72 680.10 289.96
299.88 38.00 275.00 1219.00 288.01
301.02 38.00 275.00 1400.00 287.36
302.43 38.00 270.03 1826.85 284.56
302.46 38.00 270.00 1829.00 284.56
305.82 36.00 265.00 2134.00 284.75
309.21 35.00 260.00 2438.00 284.94
309.61 35.00 259.42 2473.73 284.96
310.45 35.00 255.00 2743.00 283.11
311.32 37.00 250.00 3026.00 281.16
311.38 37.00 250.00 3048.00 281.00
313.00 37.00 250.00 3658.00 276.51
313.26 36.67 250.00 3759.48 275.76
317.46 35.56 250.00 4095.68 276.16
320.41 35.04 250.00 4255.87 277.16
320.61 35.00 250.00 4267.00 277.23
321.64 34.91 249.08 4323.67 277.56
323.31 34.00 240.00 4877.00 273.56
324.88 32.14 240.00 5415.35 269.66
327.99 31.00 240.00 5740.00 269.06
329.42 30.00 235.00 6096.00 266.71
334.77 36.00 230.00 7470.00 257.66
335.41 35.00 230.00 7620.00 256.66
341.67 39.00 215.00 9144.00 246.45
343.42 38.00 215.00 9590.00 243.46
348.68 33.00 215.00 10668.00 236.50
349.60 33.00 210.00 10860.00 235.26
351.53 32.56 207.80 11197.53 233.26
353.29 31.00 200.00 12360.00 223.06
352.71 29.03 195.08 12795.32 218.46
352.75 29.00 195.00 12802.00 218.42
360.51 22.00 200.00 14180.00 209.66
363.06 20.09 201.59 14515.71 207.86
381.77 16.74 204.38 15108.04 212.66
383.03 16.00 205.00 15240.00 212.06
390.65 13.39 205.00 16036.49 208.46
402.64 12.00 205.00 16459.00 210.69
409.04 10.00 205.00 16680.00 211.86
412.34 10.00 205.00 16764.00 212.75
414.24 9.89 205.40 16812.39 213.26
437.26 7.08 215.94 18096.64 212.26
450.61 6.00 220.00 18593.00 213.85
459.33 4.00 215.00 18910.00 214.86
481.90 3.00 140.00 19812.00 216.41
488.72 -9999.00 -9999.00 20076.46 216.86
Parameters requested: SNFILE,AREA,DATTIM,SNPARM,STNDEX,LEVELS,VCOORD,OUTPUT,
MRGDAT.
GEMPAK-SNLIST>
Rather impressive, since we know that this data was not measured on theta
levels. GEMPAK did all the interpolation, and I'll bet you didn't even
notice the time it took to do the computations.
Well, how did you do? If you are confused about something, take a look back to the tutorial section. Also, you can use your User's Manual, or the on-line help.
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