[gradsusr] error with zinterp.gs and gfs_hd nomads

[Adrian Scherzinger]

hi

i have to make wind maps on a certain height above ground with gradsdods 
and the nomads gfs_hd (0.5) data. To solve this, i use the zinterp.gs 
function for an area which is quite big (lat 40 70, lon -15 40). The 
calculation of one timestep takes around 20 minutes.
however, after one or two timesteps, the zinterp.gs function just takes 
a few seconds and gradsdods just delivers "entire grid empty" data.
the same script with nomads gfs 1 degree or 2.5 degree data is working 
fine for all timesteps.

what is going wrong?

thanks for any help
adrian

-- 
___________________________
Adrian Scherzinger
Stv. Leiter Wetterprognosen

Genossenschaft METEOTEST
Fabrikstrasse 14, CH-3012 Bern
Tel +41 (0)31 307 26 26
Fax +41 (0)31 307 26 10
adrian.scherzinger at meteotest.ch
http://www.meteotest.ch

******************************************************************
METEOFON - Wetterauskünfte im direkten Dialog mit dem Prognostiker
0900 57 61 52 (CHF 3.13/Min ab Festnetz) So-Fr 5-17:30, Sa 5-13:30
******************************************************************