[ncl-talk] Joining files together with varying dimension sizes

[Andrew Kren - NOAA Affiliate]

I tried both just now. With CDO, it worked on some variables, because the
time dimension on those was in the leftmost dimension. But the others, the
variables I also need, has time in the rightmost dimension. Can CDO also
work with this?

On Tue, Apr 26, 2016 at 1:07 PM, Guido Cioni <guidocioni at gmail.com> wrote:

> It shouldn't be a problem, along_track is still an integer as dimension...
> Did you try with the command suggested on the webpage that I sent you? Did
> you try with CDO, which sometime is smarter with “complicated" files?
> Otherwise you can try to open the nc file with ncl or fortran and manually
> modify the name of the dimensions to something more default.
>
> Are you files big? Otherwise I can have a look On them and see what it's
> working
> Il 26 apr 2016 8:58 PM, "Andrew Kren - NOAA Affiliate" <
> andrew.kren at noaa.gov> ha scritto:
>
> Hi Guido,
>
> I tried NCO, but it gave me this error, presumably because my time
> coordinate is called "along_track" and not "time". Is there a workaround
> for this?
>
> On Tue, Apr 26, 2016 at 11:27 AM, Guido Cioni <guidocioni at gmail.com>
> wrote:
>
>> Hi Andrew,
>> I would suggest you to merge data together BEFORE reading them into NCL.
>> You can easily do that either with NCO and the command ncrcat (see here
>> http://research.jisao.washington.edu/data_sets/nco/#example8) or using
>> CDO with the merge option (see here for the complete guide
>> https://www.rsmas.miami.edu/users/rajib/cdo.pdf). These methods will
>> work *without* problems as long as you have a well-defined time
>> coordinate in your files and the vertical levels are always the same.
>> Cheers
>>
>> Guido Cioni
>> http://guidocioni.altervista.org
>>
>>
>>
>>
>> Il giorno 26 apr 2016, alle ore 19:22, Andrew Kren - NOAA Affiliate <
>> andrew.kren at noaa.gov> ha scritto:
>>
>> Dear NCL Talk,
>>
>> I have data that is netcdf format of various aircraft microwave
>> retrievals. These retrievals of temperature, moisture, etc, are in units of
>> (lev,time) in each file. I want to join all of the files together so that I
>> can compare the data to dropsondes. However, when I do the addfiles
>> feature, and grab the data using temp_hamsr = factor*(short2flt(q[:]->ham_airT))-273.15,
>> it gives me this error:
>>
>> warning:File
>> /scratch4/BMC/shout/Andrew.Kren/hamsr_data/2011/HS3/L2/HAMSR_L2_20110908T185915_20110909T185423_v01.nc
>> dimension sizes do not conform to others in list; skipping file
>> warning:A valid instance of variable ham_airT was not found in one or
>> more elements of the file list
>>
>> I know what this error means after looking it up online and on the NCL
>> help page. It is because my leftmost dimension is not time (level instead),
>> which is required to merge them together. Is there any workaround to do
>> this, like reorder when reading in, with what format my data is in?
>> Basically I want to make my code portable so I can join any number of files
>> for a particular storm case, since not all cases have the same amount of
>> time retrievals.
>>
>> I also attached an ncl_filedump output of the format of the data I am
>> reading. The along track metadata refers to time dimension in this case.
>>
>> Thanks,
>>
>> --
>> Andrew Kren, PhD
>> Research Scientist I, Global Observing Systems Analysis (GOSA) Group
>> NOAA ESRL Global Systems Division (Rm 3C515)
>> 325 Broadway, Boulder, CO 80305
>> (303) 497-5418
>> <format_file.txt><compare_AVAPS_HAMSR_HS3_2011.ncl>
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>>
>>
>
>
> --
> Andrew Kren, PhD
> Research Scientist I, Global Observing Systems Analysis (GOSA) Group
> NOAA ESRL Global Systems Division (Rm 3C515)
> 325 Broadway, Boulder, CO 80305
> (303) 497-5418
>
>


-- 
Andrew Kren, PhD
Research Scientist I, Global Observing Systems Analysis (GOSA) Group
NOAA ESRL Global Systems Division (Rm 3C515)
325 Broadway, Boulder, CO 80305
(303) 497-5418
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