[Wrf-users] WRF DFFA OBS_DOMAIN format
Brian Reen
reenb at meteo.psu.edu
Fri Jul 15 14:55:24 MDT 2011
Andre,
It looks like you are specifying that there are 32 levels in the
observation, but only providing 31 levels. Try changing 32 to 31 in the
header (at the end of the line that starts with "FM-35 TEMP").
Also, it looks like you have your temperatures in the wrong units. I
believe the temperature should be in K, so the lowest level in your ob
has a temperature of 2.4 K.
You may want to format the obs for input to OBSGRID
(http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap7.htm)
so that it can do QC, etc., and then it will output the OBS_DOMAIN file.
For information on the data format to put into OBSGRID see section
6.12 in:
http://www.mmm.ucar.edu/mm5/documents/MM5_tut_Web_notes/OA/OA.htm
Thanks,
Brian
On 7/15/2011 12:52 PM, Andre Pattantyus wrote:
> Hi all,
>
> I am having trouble finding out how to format observation data correctly in
> fdda. I have my own example set to go off of and I made a new OBS_DOMAIN
> with only one sounding in it. When I run wrf however I get an error when the
> file gets read in during intialization when it looks for data in file. It
> says something like error reading end of file. The documentation I found by
> cindy bruyere from NCAR mentions that this is a necessary part of the file.
> This data is not visible in either my example file I am working off of or
> the example given by wrf, found here
> http://www.mmm.ucar.edu/wrf/src/OBS_DOMAIN. So how do I correct this and fix
> my obs_domain file so it is read in? Thanks.
>
> Here is what my OBS_DOMAINS look like:
>
> 20040119120000
> 31.87 -106.70
> 99001 Maybe more site info UA MET FROM KEPZ
> FM-35 TEMP 1252. T F 32
> 878.000 0.000 1252.000 0.000 2.400
> 0.000 1.450 129.000 0.528 129.000 90.000
> 0.000
> 855.000 0.000 1466.000 0.000 6.000
> 0.000 4.700 129.000 2.092 129.000 71.000
> 0.000
> 850.000 0.000 1513.000 0.000 6.000
> 0.000 5.129 129.000 2.392 129.000 70.000
> 0.000
> 835.000 0.000 1659.000 0.000 5.800
> 0.000 5.440 129.000 1.560 129.000 61.000
> 0.000
> 726.000 0.000 2785.000 0.000 -3.300
> 0.000 3.535 129.000 0.687 129.000 76.000
> 0.000
> 700.000 0.000 3074.000 0.000 -3.100
> 0.000 2.417 129.000 0.880 129.000 54.000
> 0.000
> 693.000 0.000 3153.000 0.000 -3.700
> 0.000 2.862 129.000 1.156 129.000 46.000
> 0.000
> 681.000 0.000 3291.000 0.000 -3.500
> 0.000 3.264 129.000 1.522 129.000 16.000
> 0.000
> 669.000 0.000 3431.000 0.000 -3.700
> 0.000 3.600 129.000 1.995 129.000 25.000
> 0.000
> 660.000 0.000 3538.000 0.000 -3.300
> 0.000 3.926 129.000 2.454 129.000 10.000
> 0.000
> 641.000 0.000 3768.000 0.000 -4.300
> 0.000 4.109 129.000 3.096 129.000 36.000
> 0.000
> 629.000 0.000 3917.000 0.000 -4.700
> 0.000 3.598 129.000 2.914 129.000 23.000
> 0.000
> 603.000 0.000 4246.000 0.000 -7.700
> 0.000 2.960 129.000 2.859 129.000 41.000
> 0.000
> 566.000 0.000 4735.000 0.000 -10.900
> 0.000 5.144 129.000 0.000 129.000 31.000
> 0.000
> 562.000 0.000 4790.000 0.000 -10.500
> 0.000 5.125 129.000 -0.448 129.000 10.000
> 0.000
> 546.000 0.000 5011.000 0.000 -11.100
> 0.000 5.763 129.000 -2.212 129.000 14.000
> 0.000
> 500.000 0.000 5680.000 0.000 -15.900
> 0.000 7.951 129.000 -2.130 129.000 9.000
> 0.000
> 400.000 0.000 7320.000 0.000 -28.100
> 0.000 10.535 129.000 -7.377 129.000 13.000
> 0.000
> 390.000 0.000 7502.000 0.000 -29.100
> 0.000 10.535 129.000 -7.377 129.000 6.000
> 0.000
> 331.000 0.000 8652.000 0.000 -39.500
> 0.000 15.852 129.000 -7.392 129.000 27.000
> 0.000
> 300.000 0.000 9320.000 0.000 -44.300
> 0.000 18.853 129.000 -6.862 129.000 20.000
> 0.000
> 250.000 0.000 10520.000 0.000 -53.300
> 0.000 20.870 129.000 -5.592 129.000 22.000
> 0.000
> 229.000 0.000 11078.000 0.000 -56.300
> 0.000 21.012 129.000 -1.838 129.000 24.000
> 0.000
> 209.000 0.000 11659.000 0.000 -53.300
> 0.000 22.292 129.000 3.931 129.000 13.000
> 0.000
> 200.000 0.000 11940.000 0.000 -55.300
> 0.000 21.785 129.000 3.841 129.000 10.000
> 0.000
> 188.000 0.000 12335.000 0.000 -56.700
> 0.000 25.457 129.000 6.347 129.000 9.000
> 0.000
> 167.000 0.000 13091.000 0.000 -55.500
> 0.000 23.094 129.000 -1.615 129.000 6.000
> 0.000
> 150.000 0.000 13770.000 0.000 -60.300
> 0.000 17.937 129.000 1.569 129.000 6.000
> 0.000
> 127.000 0.000 14802.000 0.000 -61.100
> 0.000 16.460 129.000 0.287 129.000 5.000
> 0.000
> 107.000 0.000 15850.000 0.000 -66.100
> 0.000 12.920 129.000 3.462 129.000 5.000
> 0.000
> 100.000 0.000 16260.000 0.000 -65.300
> 0.000 14.411 129.000 3.861 129.000 6.000
> 0.000
>
>
> Andre
>
>
>
>
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