[Wrf-users] ERA-Interim SST in WRF

[Eric Altshuler]

WRF is masking SST over land points (SST=0 on land). Try masking out areas where SST is too low to be a valid physical value (SST < 270 K never occurs):

'd maskout(sst,sst-270)'

You should now see the normal range of SST displayed (273 - 300 K).

----- Original Message -----
From: "Satyaban Bishoyi Ratna" <satyaban_2001 at rediffmail.com>
To: "Wrf Users" <wrf-users at ucar.edu>
Cc: "wrfhelp" <wrfhelp at ucar.edu>
Sent: Tuesday, May 29, 2012 9:44:20 PM
Subject: [Wrf-users] ERA-Interim SST in WRF



Dear User, 
I am trying to prescribe (update) ERA-Interim SST for a month long simulation with WRF3.4. I found that the METGRID program is wrongly reading the SST value. I have used the "read_wrf_nc" utility to read the METGRID outputs and found that the SST value ranges from 0 to 300.98 which are different than the input SST value. 



read_wrf_nc met_em.d01.2000-11-01_00:00:00.nc -v SST 
INPUT FILE IS: met_em.d01.2000-11-01_00:00:00.nc 
Field : SST 
FieldType : 104 
Description : Sea-Surface Temperature 
Units : K 
Stagger : M 
Total times in file : 1 
Dimensions : 214 (x) 149 (y) 1 (z) 

2000-11-01_00:00:00 : MIN = 0.000000000 MAX = 300.9088440 
--- End of input file --- 



Could you please suggest how to overcome this error. 
I have run the model and found this wrong SST value in the postprocessed output. Please find herewith attached the plots for the differences observed in the input SST value and SST in the WRF model. 


Thanks. 
Regards 
SBR 

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