Re: conflict between LSM and initial data on sea ice

Subject: Re: conflict between LSM and initial data on sea ice
From: Peter Paul Smolka (
Date: Mon Aug 20 2001 - 07:48:06 MDT

On Fri, 17 Aug 2001, Xuguang Wang wrote:

> Date: Fri, 17 Aug 2001 12:24:05 -0400 (EDT)
> From: Xuguang Wang <>
> To: ccm-users@UCAR.EDU
> Subject: conflict between LSM and initial data on sea ice
> Dear ccm3 users,
> I initialize ccm3 with NCEP/NCAR reanalysis. It seems there is a conflict
> on sea ice between LSM sfc data and the initial data obtained from the
> reanalysis. The error message is
> *************************************************************************
> LSM sfc data says land, initial data says sea ice at i,lat= 61
> 3 LSM data will be used
> *************************************************************************
> Although the model still runs, I am still worried about it. Has any of you
> had the same problem? What does this mean? How do you initialize ORO or
> SICTHK with the reanalysis?

Dear Xuguang,

the question has two aspects:

1) How to initialize Oro etc. and 2) How to tell the LSM to use other data

For the fist part:

I recommend:

a) Transfer the history file to ascii / the netCDF file to ascii
(depending on what applies),
b) exchange in clear ascii the respective data (but don t go beyond
col 78) and
c) transfer it back.

For that you can use in case of netCDF ncdump, ncgen with the respecive
flags.For the ascii/history version I can send you something.

The 2nd part I have to look up in the inst. (I never had any
problems with it although I use quite different orographies etc.).

> Thanks for your help.
> Xuguang
Best regards, Peter

Dr. Peter P. Smolka
University Muenster
Geological Institute
Corrensstr. 24
D-48149 Muenster

Tel.: +49/251/833-3989 +49/2533/4401
Fax: +49/251/833-3989 +49/2533/4401

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