[ncl-talk] Change "Valid Time" on WRF NCL Plots

[Mohd Noor'Arifin Bin Hj Yussof]

Dear Dave,


Thank you for the input.


So for example, in my NCL Script I would have a code that reads in the time values like this:

times = wrf_user_getvar(f,"times",-1)  ; get all times in the file

How then would I add the 8 hours to the "times" which I have read into memory?

?

Kind Regards,

Arifin Yussof
Meteorological Officer
Officer in Digital Product Support and Numerical Weather Prediction (DSNP),
Strategy and Development Division,
Brunei Darussalam Meteorological Department, Ministry of Transport and Infocommunications

Address: Block B23, Anggerek Desa Flat , Simpang 32-37, Kampung Anggerek Desa, Brunei Darussalam BB3713

Telephone number: (+673) 2381342 ext 233 - Website: http://www.met.gov.bn - Instagram/Facebook: @bruneiweather - Mobile App: Brunei WX

Helping you understand weather better
________________________________
From: Dave Allured - NOAA Affiliate <dave.allured at noaa.gov>
Sent: 05 July 2020 5:32 AM
To: Mohd Noor'Arifin Bin Hj Yussof
Cc: ncl-talk at ucar.edu
Subject: Re: [ncl-talk] Change "Valid Time" on WRF NCL Plots

It is better to not change your data files for something like this.  I do not think NCL has a function that can handle time zone translation. If anyone knows of such a function, please let us know.

However, you can adjust Valid Time in your NCL plot program, after you read the WRF data into memory.  Simply add 8 hours.  The actual number to add must be scaled to the input time units, such as "days" or "hours".

If Valid Time is string rather than numeric, you must translate it to numeric time coordinates before adding the offset.


On Sat, Jul 4, 2020 at 9:04 AM Mohd Noor'Arifin Bin Hj Yussof via ncl-talk <ncl-talk at mailman.ucar.edu<mailto:ncl-talk at mailman.ucar.edu>> wrote:

Dear NCL Experts,


How do I change the time on the "Valid Time" on WRF NCL Plots? The time in the wrfout files are all in UTC and I want to change it to my local time by adding +8 hours to it. How can I do this easily?


Thanks in advance!


Kind Regards,

Arifin Yussof
Meteorological Officer
Officer in Digital Product Support and Numerical Weather Prediction (DSNP),
Strategy and Development Division,
Brunei Darussalam Meteorological Department, Ministry of Transport and Infocommunications

Address: Block B23, Anggerek Desa Flat , Simpang 32-37, Kampung Anggerek Desa, Brunei Darussalam BB3713

Telephone number: (+673) 2381342 ext 233 - Website: http://www.met.gov.bn - Instagram/Facebook: @bruneiweather - Mobile App: Brunei WX



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