The 18th BMB-NCAR Project Meeting
Time: 02:00~03:45 pm, Feb 16, 2006
Participants:
Dr. Huang, Dr. Guo, and Jiqin Zhong
1.
Discuss
the project progress
Jiqin compared the analysis
increment using WRF 12 hour forecast as background with that using AVN 12
hour forecast as background. Results showed that the amplitude of analysis
increment of most fields using WRF 12 hour forecast as background is smaller
than that using AVN 12 hour forecast as background. The observation used in
those experiments included AWS and GPS PWV. Dr. Huang pointed out that the
former should be more reasonable than the latter.
Jiqin also made experiments to tune
surface observation errors for sfc_assi=2 with which we could get equivalent
analysis increment as that got with sfc_assi=1 with original observation
errors.
Jiqin continued the serial
experiments with the EXP15 and EXP16.
|
EXP15: |
avn12f, MM5 model, WRFVAR passed=4,
var_scaling=1, len_scaling=1, check_rh=2, sfc_assi=2 t_err=2C,
p_err=100pa, v_err=1.1m/s rh_err=10% |
|
EXP16: |
avn12f, MM5 model, WRFVAR passed=4,
var_scaling=1, len_scaling=1, check_rh=2, sfc_assi=2 t_err=1.3C,
p_err=100pa, v_err=0.9m/s rh_err=6% |
The verification results showed
the scores with sfc_assi option set to 1 is higher than that with sfc_assi
option set to 2.
Dr. Guo Yong-Run had provided the
verification package on the website.
2.
Make
a task list
Learn to set up the verification package and verify the
serial experiment result.
Redo the EXP11 with WRF (marked as EXP11_WRF_AVN12F) and
compare the performance of MM5 model and WRF model by the verification result.
Redo EXP11 with WRF and use WRF 12 hour forecast as
background (marked as EXP11_WRF_WRF12F). Compare the performance of
EXP11_WRF_WRF12F with that of EXP11_WRF_AVN12F by the verification result.
Do EXP11 joining with assimilation of AWS, GPSPW and wind
profiler data respectively. Try to find the contribution of these local data to
the forecast by the verification result.
3. Next meeting
The next meeting will be at 2:00 pm, Feb 28, 2006.