Hi,<br><br>When i researching about differnece component of WRF, i have the following question:<br><br>What is the differennce between WRFVAR and OBSGRID ? <br>From the WRF user manual, i see that the input of the first guess and observeration data (I use the observation data in the LITTLE_R format) needed for both of the da_wrfvar.exe and obsgrid.exe. And from the process flow from<br>
<br>From WRFVAR<br><a href="http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3.1/users_guide_chap6_files/image002.png">http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3.1/users_guide_chap6_files/image002.png</a><br><br>
and <br><br>From ObsGrid<br><a href="http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3.1/users_guide_chap7_files/image002.gif">http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3.1/users_guide_chap7_files/image002.gif</a><br>
<br>I see the final output is to the WRF block. So what is the linkage between WRFVAR and OBSGRID ?<br><br>Thank you very much,<br>Patrick<br>