Hi. I was wondering if I could get some help on how to set up a WRF run with nudging. According to the what I have been able to find in the WRF users' pages, I have added the following lines to my namelist.input to obtain nudging:
REAL.exe works fine and generates the wrffdda_d01 file as expected. WRF.exe also runs, however, the results are exactly the same as without nudging. Differences between nudged and unnudged 9-day runs are equal to zero for all fields for all output times.
Inspection of the log files indicates that nudging is apparently happening (see below):
What am I doing wrong? My namelist is attached.
I also noticed that, despite setting "gfdda_end_h = 48", the wrffdda_d01 file covers the entire length of the run, which is 9 days. It seems like WRF is ignoring gfdda_end_h.
Any help will be much appreciated. Cheers
Code:
&fdda
grid_fdda = 1,
gfdda_inname = "wrffdda_d01",
gfdda_interval_m = 360,
gfdda_end_h = 48,
io_form_gfdda = 2,
/REAL.exe works fine and generates the wrffdda_d01 file as expected. WRF.exe also runs, however, the results are exactly the same as without nudging. Differences between nudged and unnudged 9-day runs are equal to zero for all fields for all output times.
Inspection of the log files indicates that nudging is apparently happening (see below):
Code:
D01 3-D analysis nudging reads new data at time = 0.000 min.
D01 3-D analysis nudging bracketing times = 0.00 360.00 min.
D01 3-D analysis nudging reads new data at time = 360.000 min.
D01 3-D analysis nudging bracketing times = 360.00 720.00 min.What am I doing wrong? My namelist is attached.
I also noticed that, despite setting "gfdda_end_h = 48", the wrffdda_d01 file covers the entire length of the run, which is 9 days. It seems like WRF is ignoring gfdda_end_h.
Any help will be much appreciated. Cheers