[ncl-talk] Vertical wind shear calculation within 400 km radius of TC

[Dennis Shea]

Also, the just released NCL 6.5.0 contains:


https://www.ncl.ucar.edu/Document/Functions/Contributed/geolocation_circle.shtml

Radii can be specified as degrees or km.

The two examples have some figures to illustrate

      https://www.ncl.ucar.edu/Applications/Images/geolocation_circle.png
and
      https://www.ncl.ucar.edu/Applications/Images/geolocation_circle_2.png


On Fri, Jul 20, 2018 at 7:35 AM, Carl Schreck <cjschrec at ncsu.edu> wrote:

> Here is code that I used for something similar. It calculates the radius
> around a storm (starting at line 85). Of course, you first have to read the
> storm location. IBTrACS <https://www.ncdc.noaa.gov/ibtracs/> has great
> resources for that.
> https://k3.cicsnc.org/carl/carl-ncl-tools/blob/master/
> filter/remove_tc_davis.ncl
>
> On Fri, Jul 20, 2018 at 9:30 AM Md. Jalal Uddin <dmjalal90 at gmail.com>
> wrote:
>
>> Hi,
>>
>> I already calculated and plotted vertical wind shear for 850-200 hPa
>> level. Please find this script in the attachment. Now, I want to calculate
>> the vertical wind shear within 400 km radius of a Tropical cyclone. Could
>> anyone give me the formula or idea? Then, I can modify my code.
>>
>> Best regards,
>> Jalal
>>
>> On Wed, Jul 18, 2018 at 11:11 PM Rick Brownrigg <brownrig at ucar.edu>
>> wrote:
>>
>>> Hi,
>>>
>>> Unfortunately, the script you sent does not align with the line numbers
>>> of the error messages -- line 47 is a blank line.  In any case, the error
>>> message is pretty self-explanatory -- you are making reference to a 3D
>>> variable as though it were a 2D variable. You might place a few strategic
>>> "printVarSummary()" statements for the variables involved to make sure your
>>> variables are what you think they are.
>>>
>>> Hope that helps...
>>> Rick
>>>
>>> On Tue, Jul 17, 2018 at 5:14 PM, Md. Jalal Uddin <dmjalal90 at gmail.com>
>>> wrote:
>>>
>>>> Hi all,
>>>>
>>>> I wanted to calculate mean vertical wind shear for each pressure level
>>>> (950-100mb). I used u and v wind component from the NCEP Climate Forecast
>>>> System Reanalysis (CFSR) 6-hourly Products.
>>>>
>>>> I am getting the following errors:
>>>> fatal:Number of subscripts do not match number of dimensions of
>>>> variable,(2) Subscripts used, (3) Subscripts expected
>>>> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 41 in
>>>> file test_vws_eachlevel.ncl
>>>>
>>>> Number of subscripts do not match number of dimensions of variable,(2)
>>>> Subscripts used, (3) Subscripts expected
>>>> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 47 in
>>>> file test_vws_eachlevel.ncl
>>>>
>>>> Please help.
>>>>
>>>> Cheers,
>>>> Jalal
>>>> --
>>>> *Md. Jalal Uddin*
>>>> MSc in Applied Meteorology (English Language)
>>>> Nanjing University of Information, Science and Technology, China
>>>> Jasmine Jiangsu Government Scholar
>>>> Cell: +8613260859092
>>>> Office: WMO RMTC building in middle campus
>>>>
>>>> *AND *
>>>> B.Sc. in Disaster Management (Hons.)
>>>> Patuakhali Science and Technology University, Bangladesh.
>>>> Cell: +8801792052662, +8801838613203
>>>> Email: dmjalal90 at gmail.com
>>>> Web: www.dmjalal90.weebly.com
>>>> Facebook: jalal.hossen.39
>>>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>>>> Twitter: dmjalal90
>>>> Skype: dmjalal90
>>>>
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>>>>
>>>
>>
>> --
>> *Md. Jalal Uddin*
>> MSc in Applied Meteorology (English Language)
>> Nanjing University of Information, Science and Technology, China
>> Jasmine Jiangsu Government Scholar
>> Cell: +8613260859092
>> Office: WMO RMTC building in middle campus
>>
>> *AND *
>> B.Sc. in Disaster Management (Hons.)
>> Patuakhali Science and Technology University, Bangladesh.
>> Cell: +8801792052662, +8801838613203
>> Email: dmjalal90 at gmail.com
>> Web: www.dmjalal90.weebly.com
>> Facebook: jalal.hossen.39
>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>> Twitter: dmjalal90
>> Skype: dmjalal90
>> _______________________________________________
>> ncl-talk mailing list
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>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>
>
> --
>
> <https://ncics.org/> *Carl J. Schreck III, PhD*
> *Research Scholar*
> North Carolina State University <http://ncsu.edu/>
> North Carolina Institute for Climate Studies (NCICS) <https://ncics.org/>
> 151 Patton Ave, Asheville, NC 28801
> e: cjschrec at ncsu.edu
> o: +1 828 257 3140
> c: +1 828 484 1702
> Publications
> <http://scholar.google.com/citations?hl=en&user=th8ONEcAAAAJ&view_op=list_works&sortby=pubdate>
> ncics.org/mjo
> CycloneCenter.org <https://www.cyclonecenter.org/>
>
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