[ncl-talk] calculating EP flux from JRA55

[Dennis Shea]

A wild guess: I speculate there is a *scaling issue*.
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https://www.ncl.ucar.edu/Document/Functions/Contributed/epflux.shtml

The NCL epflux function code can be examined by looking at contributed.ncl
[ 6.4.0 ]
The NCL function was based upon code developed by scientists at NOAA/PSD.
NCL's results match.

%> less $NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl

"function epflux"  is the user interface but the "function epflux4" is the
function that does the work. T

*As you can see, there is *nothing* that is NCEP specific.*

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Are t 'plev' you are inputting 'plev' as  hPa or Pa ?

Some additional information:

http://www.met.reading.ac.uk/~pn904784/snap/ep_flux_calculations.html
http://www.met.reading.ac.uk/~pn904784/snap/ssw20122013.html
http://esrl.noaa.gov/psd/data/epflux/images/EP_Flux_Calculation_and_Display.pdf"

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On Wed, Nov 30, 2016 at 11:20 PM, Sitan Heyl <heylsitan at gmail.com> wrote:

> Hi, All
>    I am calculating the ep flux using NCL function and get a reasonable
> result from NCEP data. But when I calculate the ep flux from Japanese
> 55-years Reanalysis, the result is so ridiculous. so I compare the ep flux
> on 2008/08/01 from two datasets. I found the Fp in JRA is much more than
> that in NCEP and I think this is the wrong place. So I wonder is there any
> notice needed when using epflux function? can it be used on the other
> dataset beside NCEP?
>
> Bests,
> Yongli
>
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