HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Thanks for the info .. I will postpone including roughness for the moment since it seems quite complicated.
James Hamilton -- Met Eireann

Thanks .. I am running on pressure levels with ECMWF data. At the surface I just have
10-metre wind, 2-metre temperature, surface pressure. I also extract roughness but I
did not know how to use it. I dont have friction velocity and/or surface momentum flux.

Thanks .. I will try making that modification to grib2arl.
After that do I need to change things to get hysplit to
read and use the new surface roughness ?
James Hamilton - Met Eireann

Hi,

I want to extract surface roughness data from ecmwf and use it with hysplit. I am using the
grib2arl converion program [with a few local changes]. I cannot find any mention of
roughness in the program [e.g. boundary layer has the code PBLH, precipitation
has the code TPP6 etc but I can't find ...

Thanks .. just saw the reply .

Hi,

ECMWF is increasing their number of levels in the next few months and the model level data will only be
available in GRIB2. Are there any plans to convert GRIB2ARL [and other conversion programs] to use
GRIB2 or will I just have to convert the ECMWF data to GRIB1 before using it.

Thanks

James ...

Here are details of the modifications I made to the AMPS2ARL tprogram to get it to work with
the Harmonie model ..

**************************************************************************************************

diff harm2arl.f amps2arl.f
2d1
< ! Postby roland.draxler » February 28th, 2013, 5:21 ...

Many thanks, I have got your program running with the harmonie data [on pressure levels] and I am now adding in rainfall. I will post a copy of the final program whan I have finished modifying it.
James Hamilton

I am trying to run hysplit using data from the harmonie model. This is
a model developed by the hirlam/aladin community. The version I am
using runs on a 2.5 Km grid centerred at arrrox. 54N 6W and
covering an area of about 1000Km x 1000Km. It uses the lambert
conformal projection.

The grid is ...

Hi,

I am trying to run hysplit with data from the "harmonie" model .. the model runs on
a lambert conformal projection with [in my case] a grid spacing of 2.5km. It is a
limited area model used by the Hirlam/Aladin community.

When I run grib2arl it gives me the following values ..

"...
Input ...