[gradsusr] Getting SREF Probability Variables To Plot In GrADS

Jennifer Adams jma at cola.iges.org
Fri Jun 6 12:15:39 EDT 2014 

OK, so what about the output from gribmap with the new TDEF?  --Jennifer


On Jun 6, 2014, at 12:12 PM, Perry, Aaron @ LSC wrote:

> Sorry about that.
> 
> Specifically, I am trying to get the QPF probabilities GRIB2, which to my understanding is located at:http://ftp.ncep.noaa.gov/data/nccf/com/sref/prod/sref.20140604/15/ensprod/sref.t15z.pgrb132.prob_3hrly.grib2
> 
> I've then been using g2ctl/gribmap to create the necessary .ctl/.idx files, though more recently with all this troubleshooting, I've just been editing one control file. 
> 
> Originally, I tried using the method that was posted here (http://gradsusr.org/pipermail/gradsusr/2011-November/031529.html)
> 
> 
> Onward and Upward,
> 
> Aaron D. Perry
> Atmospheric Sciences
> Lyndon State College
> Class of 2016
> Boston, MA 
> Twitter: @AaronPerryLSC
> Mobile: 617-780-4312
> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org] on behalf of Jennifer Adams [jma at cola.iges.org]
> Sent: Friday, June 06, 2014 11:03 AM
> To: GrADS Users Forum
> Subject: Re: [gradsusr] Getting SREF Probability Variables To Plot In GrADS
> 
> Aaron, there are quite a file subdirectories under http://ftp.ncep.noaa.gov/data/nccf/com/sref/prod/sref.20140604/15. Could you please be completely specific about the URL that points to the file you are trying to read?  Also, your TDEF starts 00z01jun with only 10 3-hour time steps -- this will not cover the apparent time range of your data, it won't even come close to the initial time of your forecast: 15z4jun2014. 
> 
> What is the output from gribmap -v on you descriptor with a tdef that looks like like this: 
> 
> TDEF 27 linear 15z4jun2014 3hr 
> 
> This time axis starts at the initial date of your data file and extend to 21z07jun2014, which is the apparent valid time of the final record in your file. 
> 
> --Jennifer
> 
> 
> 
> 
> 
> 
> 
> On Jun 6, 2014, at 6:40 AM, Perry, Aaron @ LSC wrote:
> 
>> Hi Jennifer,
>> 
>> Here's my data source:
>> 
>> http://ftp.ncep.noaa.gov/data/nccf/com/sref/prod/
>> 
>> 
>> 
>> Onward and Upward,
>> 
>> Aaron D. Perry
>> Atmospheric Sciences
>> Lyndon State College
>> Class of 2016
>> Boston, MA 
>> Twitter: @AaronPerryLSC
>> Mobile: 617-780-4312
>> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org] on behalf of Jennifer Adams [jma at cola.iges.org]
>> Sent: Friday, June 06, 2014 6:31 AM
>> To: GrADS Users Forum
>> Subject: Re: [gradsusr] Getting SREF Probability Variables To Plot In GrADS
>> 
>> Can you point me to the source of your data file? --Jennifer
>> 
>> On Jun 5, 2014, at 1:29 PM, Perry, Aaron @ LSC wrote:
>> 
>>> Jennifer,
>>> 
>>> After carrying out your suggestions, I am still getting the "Data Request Warning/Cannot Contour" errors.
>>> 
>>> I've attached the control file and the GrADS script that I'm using to try and plot, at this point, anything.
>>> 
>>> 
>>> 
>>> Onward and Upward,
>>> 
>>> Aaron D. Perry
>>> Atmospheric Sciences
>>> Lyndon State College
>>> Class of 2016
>>> Boston, MA 
>>> Twitter: @AaronPerryLSC
>>> Mobile: 617-780-4312
>>> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org] on behalf of Jennifer Adams [jma at cola.iges.org]
>>> Sent: Thursday, June 05, 2014 6:49 AM
>>> To: GrADS Users Forum
>>> Subject: Re: [gradsusr] Getting SREF Probability Variables To Plot In GrADS
>>> 
>>> Looks like you need to change your time axis to be 3 hourly and extend it to 00z21jun. --Jennifer
>>> On Jun 4, 2014, at 8:46 PM, Perry, Aaron @ LSC wrote:
>>> 
>>>> Hi Jennifer,
>>>> 
>>>> I just went back and fixed those variables in the control file.
>>>> 
>>>> Here's the output from gribmap -v:
>>>> 
>>>> 1.1: lev1=1,0 a1,1.27 var=0,1,8,1 MATCH
>>>> 2.1: lev1=1,0 a1,12.7 var=0,1,8,1 MATCH
>>>> 3.1: lev1=1,0 a1,0.25 var=0,1,8,1 valid time 2014060606:00 (t=7.5) has non-integer grid index
>>>> 4.1: lev1=1,0 a1,38.1 var=0,1,8,1 valid time 2014060612:00 (t=8.5) has non-integer grid index
>>>> 5.1: lev1=1,0 a1,2.54 var=0,1,8,1 valid time 2014060700:00 (t=10.5) is outside grid limits
>>>> 6.1: lev1=1,0 a1,101.6 var=0,1,8,1 valid time 2014060709:00 (t=12) is outside grid limits
>>>> 7.1: lev1=1,0 a1,12.7 var=0,1,8,1 valid time 2014060721:00 (t=14) is outside grid limits
>>>> 
>>>> Looks like variables 5-7 are giving me issues, possibly THE issue?
>>>> 
>>>> 
>>>> Onward and Upward,
>>>> 
>>>> Aaron D. Perry
>>>> Atmospheric Sciences
>>>> Lyndon State College
>>>> Class of 2016
>>>> Boston, MA 
>>>> Twitter: @AaronPerryLSC
>>>> Mobile: 617-780-4312
>>>> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org] on behalf of Jennifer Adams [jma at cola.iges.org]
>>>> Sent: Wednesday, June 04, 2014 6:36 PM
>>>> To: GrADS Users Forum
>>>> Subject: Re: [gradsusr] Getting SREF Probability Variables To Plot In GrADS
>>>> 
>>>> Hi, Aaron -- 
>>>> You don't need the alias syntax with grib data. The var1.1 syntax is just a dummy variable name that is designed to be unique to the record. You can use use "p1" instead of "var1.1=>p1". 
>>>> 
>>>> What is the output from gribmap -v? 
>>>> --Jennifer
>>>> 
>>>> 
>>>> On Jun 4, 2014, at 6:25 PM, Perry, Aaron @ LSC wrote:
>>>> 
>>>>> I took a look at the suggestion documentation and ran grib2scan. Below is a copy/paste link of the output. After reviewing the output, I was able to come up with this modified control file:
>>>>> 
>>>>> grib2scan Output: http://paste2.org/zE92be26
>>>>> 
>>>>> Modified Control File (Not working):
>>>>> 
>>>>> dset /home/aaron/grads/data/sref_prob/20140604/15Z/sref_prob.20140604.15z.grib2
>>>>> index /home/aaron/grads/data/sref_prob/20140604/15Z/sref_prob.20140604.15z.grib2.idx
>>>>> undef 9.999E+20
>>>>> title /home/aaron/grads/data/sref_prob/20140604/15Z/sref_prob.20140604.15z.grib2
>>>>> * produced by g2ctl v0.0.9
>>>>> * command line options: /home/aaron/grads/data/sref_prob/20140604/15Z/sref_prob.20140604.15z.grib2
>>>>> * griddef=1:0:(697 x 553):grid_template=30:winds(grid): Lambert Conformal: (697 x 553) input WE:SN output WE:SN res 8 Lat1 1.000000 Lon1 214.500000 LoV 253.000000 LatD 50.000000 Latin1 50.000000 Latin2 50.000000 LatSP 0.000000 LonSP 0.000000 North Po
>>>>> dtype grib2
>>>>> pdef 697 553 lccr 1.000000 214.500000 1 1 50.000000 50.000000 253.000000 16232.000000 16232.000000
>>>>> xdef 1415 linear 148.637041 0.147586114443721
>>>>> ydef 573 linear 0.896436 0.147563636363636
>>>>> tdef 10 linear 15Z04jun2014 6hr
>>>>> zdef 1 linear 1 1
>>>>> vars 7
>>>>> var1.1=>p1 0,1,0 a1,1.27 0,1,8,1 Probability of event above 1.27
>>>>> var2.1=>p2 0,1,0 a1,12.7 0,1,8,1 Probability of event above 12.7
>>>>> var3.1=>p3 0,1,0 a1,0.25 0,1,8,1 Probability of event above 0.25
>>>>> var4.1=>p4 0,1,0 a1,38.1 0,1,8,1 Probability of event above 38.1
>>>>> var5.1=>p5 0,1,0 a1,2.54 0,1,8,1 Probability of event above 2.54
>>>>> var6.1=>p6 0,1,0 a1,101.6 0,1,8,1 Probability of event above 101.6
>>>>> var7.1=>p7 0,1,0 a1,12.7 0,1,8,1 Probability of event above 12.7
>>>>> ENDVARS
>>>>> 
>>>>> Unfortunately, I am still receiving the "Cannot Contour Grid/Data Request Warning" errors. None of the variables will plot. 
>>>>> 
>>>>> 
>>>>> 
>>>>> Onward and Upward,
>>>>> 
>>>>> Aaron D. Perry
>>>>> Atmospheric Sciences
>>>>> Lyndon State College
>>>>> Class of 2016
>>>>> Boston, MA 
>>>>> Twitter: @AaronPerryLSC
>>>>> Mobile: 617-780-4312
>>>>> From: gradsusr-bounces at gradsusr.org [gradsusr-bounces at gradsusr.org] on behalf of Jennifer Adams [jma at cola.iges.org]
>>>>> Sent: Wednesday, June 04, 2014 11:31 AM
>>>>> To: GrADS Users Forum
>>>>> Subject: Re: [gradsusr] Getting SREF Probability Variables To Plot In GrADS
>>>>> 
>>>>> Aaron, 
>>>>> Have a look at the doc page on descriptor file elements, under 'vars' and then 'additional codes'.  grib2scan in verbose mode should give you a suitable entry for the descriptor file. 
>>>>> --Jennifer
>>>>> 
>>>>> 
>>>>> 
>>>>> On Jun 4, 2014, at 8:50 AM, Perry, Aaron @ LSC wrote:
>>>>> 
>>>>>> Good Morning All,
>>>>>> 
>>>>>> I've followed the steps that were outlined in this post (http://gradsusr.org/pipermail/gradsusr/2011-November/031529.html) a while back regarding getting SREF probabilities to plot in GrADS. I keep getting the "Cannot contour grid/data request" error and I was wondering if someone might know of solution.
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> Onward and Upward,
>>>>>> 
>>>>>> Aaron D. Perry
>>>>>> Atmospheric Sciences
>>>>>> Lyndon State College
>>>>>> Class of 2016
>>>>>> Boston, MA 
>>>>>> Twitter: @AaronPerryLSC
>>>>>> Mobile: 617-780-4312
>>>>>> _______________________________________________
>>>>>> gradsusr mailing list
>>>>>> gradsusr at gradsusr.org
>>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>> 
>>>>> --
>>>>> Jennifer M. Adams
>>>>> Center for Ocean-Land-Atmosphere Studies (COLA)
>>>>> 111 Research Hall, Mail Stop 2B3
>>>>> George Mason University
>>>>> 4400 University Drive
>>>>> Fairfax, VA 22030 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> _______________________________________________
>>>>> gradsusr mailing list
>>>>> gradsusr at gradsusr.org
>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>> 
>>>> --
>>>> Jennifer M. Adams
>>>> Center for Ocean-Land-Atmosphere Studies (COLA)
>>>> 111 Research Hall, Mail Stop 2B3
>>>> George Mason University
>>>> 4400 University Drive
>>>> Fairfax, VA 22030 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> _______________________________________________
>>>> gradsusr mailing list
>>>> gradsusr at gradsusr.org
>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>> 
>>> --
>>> Jennifer M. Adams
>>> Center for Ocean-Land-Atmosphere Studies (COLA)
>>> 111 Research Hall, Mail Stop 2B3
>>> George Mason University
>>> 4400 University Drive
>>> Fairfax, VA 22030 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> <sref_prob.20140604.15z.ctl><sref_qpf_prob.gs>_______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>> 
>> --
>> Jennifer M. Adams
>> Center for Ocean-Land-Atmosphere Studies (COLA)
>> 111 Research Hall, Mail Stop 2B3
>> George Mason University
>> 4400 University Drive
>> Fairfax, VA 22030 
>> 
>> 
>> 
>> 
>> 
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
> 
> --
> Jennifer M. Adams
> Center for Ocean-Land-Atmosphere Studies (COLA)
> 111 Research Hall, Mail Stop 2B3
> George Mason University
> 4400 University Drive
> Fairfax, VA 22030 
> 
> 
> 
> 
> 
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr

--
Jennifer M. Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
111 Research Hall, Mail Stop 2B3
George Mason University
4400 University Drive
Fairfax, VA 22030 





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