Hello all,

I was running RegCM-4.4.5.2 wich CLM45, when and only when I use RRTM,

They’re two variables having zero values : 

1. rsnl : Surface net upward longwave flux 

2. rsnscl : Clearsky surface net downward shortwave flux

For example, rsnl:

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[☃ 09:02 ~]>> ncks  -v rsnl EIN15_RAD.2001110100.monmean.nc | head -n 50

rsnl: type NC_DOUBLE, 3 dimensions, 5 attributes, chunked? no, compressed? no, packed? no

rsnl size (RAM) = 2*87*221*sizeof(NC_DOUBLE) = 38454*8 = 307632 bytes

rsnl dimension 0: time, size = 2 NC_DOUBLE (Record coordinate is time)

rsnl dimension 1: y, size = 87 (Non-coordinate dimension)

rsnl dimension 2: x, size = 221 (Non-coordinate dimension)

rsnl attribute 0: long_name, size = 32 NC_CHAR, value = Surface net upward longwave flux

rsnl attribute 1: standard_name, size = 32 NC_CHAR, value = surface_net_upward_longwave_flux

rsnl attribute 2: units, size = 5 NC_CHAR, value = W m-2

rsnl attribute 3: coordinates, size = 9 NC_CHAR, value = xlon xlat

rsnl attribute 4: cell_methods, size = 12 NC_CHAR, value = time: point

time: type NC_DOUBLE, 1 dimension, 2 attributes, chunked? no, compressed? no, packed? no

time size (RAM) = 2*sizeof(NC_DOUBLE) = 2*8 = 16 bytes

time dimension 0: time, size = 2 NC_DOUBLE (Record coordinate is time)

time attribute 0: units, size = 31 NC_CHAR, value = hours since 1949-12-01 00:00:00

time attribute 1: calendar, size = 8 NC_CHAR, value = standard

xlat: type NC_FLOAT, 2 dimensions, 4 attributes, chunked? no, compressed? no, packed? no

xlat size (RAM) = 87*221*sizeof(NC_FLOAT) = 19227*4 = 76908 bytes

xlat dimension 0: y, size = 87 (Non-coordinate dimension)

xlat dimension 1: x, size = 221 (Non-coordinate dimension)

xlat attribute 0: long_name, size = 24 NC_CHAR, value = Latitude on Cross Points

xlat attribute 1: units, size = 13 NC_CHAR, value = degrees_north

xlat attribute 2: standard_name, size = 8 NC_CHAR, value = latitude

xlat attribute 3: _CoordinateAxisType, size = 3 NC_CHAR, value = Lat

xlon: type NC_FLOAT, 2 dimensions, 4 attributes, chunked? no, compressed? no, packed? no

xlon size (RAM) = 87*221*sizeof(NC_FLOAT) = 19227*4 = 76908 bytes

xlon dimension 0: y, size = 87 (Non-coordinate dimension)

xlon dimension 1: x, size = 221 (Non-coordinate dimension)

xlon attribute 0: long_name, size = 25 NC_CHAR, value = Longitude on Cross Points

xlon attribute 1: units, size = 12 NC_CHAR, value = degrees_east

xlon attribute 2: standard_name, size = 9 NC_CHAR, value = longitude

xlon attribute 3: _CoordinateAxisType, size = 3 NC_CHAR, value = Lon

time[0]=455831 y[0] x[0] rsnl[0]=-0 W m-2

time[0]=455831 y[0] x[1] rsnl[1]=-0 W m-2

time[0]=455831 y[0] x[2] rsnl[2]=-0 W m-2

time[0]=455831 y[0] x[3] rsnl[3]=-0 W m-2

time[0]=455831 y[0] x[4] rsnl[4]=-0 W m-2

time[0]=455831 y[0] x[5] rsnl[5]=-0 W m-2

time[0]=455831 y[0] x[6] rsnl[6]=-0 W m-2

time[0]=455831 y[0] x[7] rsnl[7]=-0 W m-2

time[0]=455831 y[0] x[8] rsnl[8]=-0 W m-2

time[0]=455831 y[0] x[9] rsnl[9]=-0 W m-2

time[0]=455831 y[0] x[10] rsnl[10]=-0 W m-2

time[0]=455831 y[0] x[11] rsnl[11]=-0 W m-2

time[0]=455831 y[0] x[12] rsnl[12]=-0 W m-2

time[0]=455831 y[0] x[13] rsnl[13]=-0 W m-2

time[0]=455831 y[0] x[14] rsnl[14]=-0 W m-2

...

...

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other variables in RAD file are fine with reasonable non-zero values.

And using RRTM Without CLM45 or CCM with/without CLM45 simulations work well.

Does anyone have any idea?

namelist.in file is attached here.