Many of you have read it, but no one tell us his opinion about the problem.
It`s no special European problem!
Today we want to ask the US and Canadian User:
What do you think about this problem?
Do you ever have noticed it?
Here is the script
ANALYZE,CONT EQUA=5400 COLOR=55:90:250 LINE=2 CONT LSTN=5400 COLOR=55:90:250 CONT CINT=60 DASH COLOR=200:0:0 SDIF=1:2 STOR=2 HGHT H000 STOR=1 HGHT H500
#ANALYZE,HILO CONT CINT=4 LINE=2 SLPR HSFC
#product,plf,0,Surface Plots
If the 1000 hPa-level is negative, the WMO sets a "5" in front of the coded level and a "6" if the level is more than 100 meters below the station-level.
So the term "509" means a level of "-9" gpdm.
In the calculation of the "1000-500 hPa thickness" the term "509" are subtracted from the full 500-hPa-level with some very curious maps (see the following map).
You can make the corrections with the "Quality Control Panel".
You mark the area with the wrong data and start the "Quality Control Panel".
You will find some stations with values like "549" in the field "Height".
You delete the value "5" and set a "minus" instead of it, Accept Entry and afterwards make a new run of the script and you will have the corrected map.
Anyone else who has made these experiences?
With best regards,
Stefan Lichius + Jens Waterboer
