大家好，请教一个问题。我在做wrf的集合预报，利用gen_be_ensmean.exe 将几个集合成员生成平均场的时候，遇到问题如下log文件所示：
[1] Initialize information.
Directory = .
filename = wrfout_d01_2006-10-28_00:00:00
Number of ensemble members = 10
Number of variables to average = 7
List of variables to average = U V W PH T MU QVAPOR
[2] Extract necessary fields from WRF ensemble forecasts.
Computing ensemble mean for variable U
APM open
./wrfout_d01_2006-10-28_00:00:00.e001


---------------------------- FATAL ERROR -----------------------
---------------------------- FATAL ERROR -----------------------
Fatal error in file: gen_be_ensmean.b LINE: 128
Fatal error in file: gen_be_ensmean.b LINE: 128
U variable is not in input file
U variable is not in input file

报的错就是 U, '' variable is not in input file'' 请教一下大家有没有遇到过这种情况。部分代码如下：

write(6,''(/a)'')'' [2] Extract necessary fields from WRF ensemble forecasts.''
!---------------------------------------------------------------------------------------------
do v = 1, nv ! Loop over variables to average:
var = cv(v)
write(6,''(2a)'')'' Computing ensemble mean for variable '', var
do member = 1, num_members
write(UNIT=ce,FMT=''(i3.3)'')member
! Open file:
input_file = trim(directory)//''/''//trim(filename)//''.e''//trim(ce)
print *, ''APM open '',input_file
length = len_trim(input_file)
rcode = nf_open( input_file(1:length), NF_NOWRITE, cdfid )
if ( member == 1 ) then
! Get variable ID:
rcode = nf_inq_varid ( cdfid, var, id_var )
! Check variable is in file:
if ( rcode /= 0 ) then
write(UNIT=message(1),FMT=''(A,A)'') &
var, '' variable is not in input file''
call da_error(__FILE__,__LINE__,message(1:1))
end if
检查了输入的nc文件没有问题（是wrf生成的结果文件），包含u这个变量。卡了几天了，跪求大神指点，感激不尽。qq1271135716.

去气象家园问吧