[ncl-talk] Problem with calculation of wet bulb temperature

[Barry Lynn]

Except the wet bulb temperature itself.

I wonder if it could be easily added, since the rest of the work has been
done.

Barry

On Wed, Aug 29, 2018 at 4:02 AM Dennis Shea <shea at ucar.edu> wrote:

> Many of Jonathan's heat stress metrics [ HumanIndexMod ] are available
> from 6.4.0 onward:
>
>    * http://www.ncl.ucar.edu/Document/Functions/heat_stress.shtml*
> <http://www.ncl.ucar.edu/Document/Functions/heat_stress.shtml>
>
> On Tue, Aug 28, 2018 at 12:52 PM, Buzan, Jonathan <jbuzan at purdue.edu>
> wrote:
>
>> Hi Barry,
>>
>> The wet bulb calculation requires EPT  for initial estimation (the
>> algorithm uses an accelerated Newtonian convergence method). The
>> HumanIndexMod uses the best available fast method for calculating EPT (from
>> Bolton 1980), and is part of the out variables from the module.  It's like
>> a 2 for one deal! ;).  The module also produces a battery of heat stress
>> metrics, but can be manually turned off in the NCL routine.
>>
>> -Jonathan
>>
>>
>> On Aug 28, 2018, at 11:25, Barry Lynn <barry.h.lynn at gmail.com> wrote:
>>
>> Hi Jonathan:
>>
>> Thanks very much.  This is probably the best approach.
>>
>> What did you mean by the "recommended equivalent temperature algorithm?"
>> Do you mean that I should use it to calculate the equivalent potential
>> temperature?
>>
>> Barry
>>
>> On Tue, Aug 28, 2018 at 8:43 PM Buzan, Jonathan <jbuzan at purdue.edu>
>> wrote:
>>
>>> Hi Barry,
>>>
>>> There are new algorithms in the NCL code for calculating wet bulb
>>> temperature, but probably one of the fastest accurate calculations
>>> available is the Davies-Jones 2008 method.  I coded this up, and it is now
>>> part of the Community Land Model version 5.
>>>
>>> Attached is a the Fortran routine, HumanIndexMod, that is set up to work
>>> with NCL (using WRAPIT).  This also calculates the recommended equivalent
>>> potential temperature algorithm, too.
>>>
>>> -Jonathan
>>>
>>>
>>
>> --
>> Barry H. Lynn, Ph.D
>> Senior Associate Scientist, Lecturer,
>> The Institute of the Earth Science,
>> The Hebrew University of Jerusalem,
>> Givat Ram, Jerusalem 91904, Israel
>> Tel: 972 547 231 170
>> Fax: (972)-25662581
>>
>> C.E.O, Weather It Is, LTD
>> Weather and Climate Focus
>> http://weather-it-is.com
>> Jerusalem, Israel
>> Local: 02 930 9525
>> Cell: 054 7 231 170
>> Int-IS: x972 2 930 9525
>>
>>
>> _______________________________________________
>> ncl-talk mailing list
>> ncl-talk at ucar.edu
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>>
>

-- 
Barry H. Lynn, Ph.D
Senior Associate Scientist, Lecturer,
The Institute of the Earth Science,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

C.E.O, Weather It Is, LTD
Weather and Climate Focus
http://weather-it-is.com
Jerusalem, Israel
Local: 02 930 9525
Cell: 054 7 231 170
Int-IS: x972 2 930 9525
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20180829/3006e5b4/attachment.html>