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大家好,我在用ERA Interim资料转wrfda,结果显示运行成功,但为什么迭代过程都为NaN。
run to f. reject
n= 835
will run to 4.0 preconditioning
will run to 5.0 prepare bias files
success run da_get_innov_vector_radiance
Writing radiance iv ascii
Minimize cost function using CG method
Starting outer iteration : 1
Starting cost function: NaN, Gradient= NaN
For this outer iteration gradient target is: NaN
----------------------------------------------------------
Iter Cost Function Gradient Step
Options: set CLOUD_CV and cloud_cv_options to 2 or 3 !
1 NaN NaN 0.00000000D+00
Options: set CLOUD_CV and cloud_cv_options to 2 or 3 !
2 NaN NaN 0.00000000D+00
Options: set CLOUD_CV and cloud_cv_options to 2 or 3 !
3 NaN NaN 0.00000000D+00
Options: set CLOUD_CV and cloud_cv_options to 2 or 3 !
Inner iteration stopped after 200 iterations
Options: set CLOUD_CV and cloud_cv_options to 2 or 3 !
Final: 200 iter, J= NaN, g= NaN
----------------------------------------------------------
Options: set CLOUD_CV and cloud_cv_options to 2 or 3 !
Diagnostics
Final cost function J = NaN
Total number of obs. = 6926
Final value of J = NaN
Final value of Jo = NaN
但结果显示成功了啊。
end of deallocate iv%polaramv()
end of deallocate iv%pilot()
end of deallocate iv%bogus()
end of deallocate iv%radar()
end of deallocate iv%info()
begin of da_deallocate_background_errors
end of da_deallocate_background_errors
*** WRF-Var completed successfully ***
请问有人知道咋回事吗?
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