[ncl-talk] solar radiation

[Jared Lee]

Hi Komal,

In WRF-Solar (and in recent versions of the standard WRF release), here are
some of the irradiance variables you can output:

SWDOWN = GHI (this has been in WRF for quite awhile)
SWDOWNC = Clear-sky GHI (gives what the clear-sky GHI would have been,
accounting for attenuation from whatever aerosols/AOD are imposed on WRF)
SWDDNI = DNI
SWDDNIC = Clear-sky DNI
SWDDIF = Diffuse horizontal irradiance

Jared

On Fri, Jan 25, 2019 at 3:46 AM Barry Lynn <barry.h.lynn at gmail.com> wrote:

> Hi:
>
> That's with option 4 for sw.
>
> SWDDNI and SWDDNIC
>
> On Fri, Jan 25, 2019 at 11:52 AM Komal Shukla <komalshukla1992 at gmail.com>
> wrote:
>
>> Hi Barry,
>>
>> Thank you, what parameter do we take to calculate direct normal?
>> kim
>>
>>
>> On Thu, Jan 24, 2019 at 11:28 PM Barry Lynn <barry.h.lynn at gmail.com>
>> wrote:
>>
>>> Please try taking SWDOWN by itself.
>>>
>>> If you need direct normal then write again.
>>>
>>> Barry
>>>
>>> On Thu, Jan 24, 2019 at 2:15 PM Komal Shukla <komalshukla1992 at gmail.com>
>>> wrote:
>>>
>>>> Dear NCL team,
>>>>
>>>> I am trying to extract solar radiaion (w/m2) from my wrf  outputs, and
>>>> compare it with ground observation.
>>>>
>>>> SWDOWN = wrf_user_getvar(aa,"SWDOWN", -1 )      ; 3D tc
>>>>
>>>> GLW = wrf_user_getvar(aa,"GLW", -1 )      ; 3D tc
>>>> I am taking total of swdown and glw and comparing it with ground obs.
>>>> The total(GLW+SWDOWN = around 1000 w/m2 in summer noon) is way high
>>>> than the actual observation (around 340 w/m2 in summer noon).
>>>>
>>>> My ncl script is
>>>>
>>>> rh2 = wrf_user_getvar(aa,"SWDOWN", -1 )      ; 3D tc
>>>>
>>>>  rh2_day=new(24,float)
>>>>
>>>>  rh2_dd=new((/numFILES,24/),float)
>>>>
>>>> rh2_day_ist=new(24,float) ; f
>>>>
>>>>  rh2_t=rh2(:,Y1,X1)
>>>>
>>>>   print(rh2_t)
>>>>
>>>> asciiwrite("rh_pb_720", rh2_t)
>>>>
>>>>   do id=0,(numFILES-1)
>>>>
>>>>   do ih=0,23
>>>>
>>>>       idh=ih+id*24
>>>>
>>>>       rh2_dd(id,ih)=rh2_t(idh)
>>>>
>>>>   end do
>>>>
>>>>   end do
>>>>
>>>>  rh2_day_m=dim_avg_n(rh2_dd,0)
>>>>
>>>>
>>>> Is there some other way to calculate surface solar radiation?
>>>> I'd appreciate any help.
>>>>
>>>> Kim
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>>>
>>>
>>> --
>>> 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
>>>
>>>
>
> --
> 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
>


-- 
===============================
Jared A. Lee, Ph.D.
Project Scientist II
Research Applications Laboratory
National Center for Atmospheric Research
Boulder, Colorado, USA

Member, AMS Planning Commission

Email: jaredlee at ucar.edu (w)
Phone: 303.497.8485 (w)
Web: https://staff.ucar.edu/users/jaredlee
===============================
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