<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255); ">Greetings,<div><br></div><div>I'm a Spanish Chemical Engineering student.</div><div>I'm writting you because I'm trying to run OBSGRID but I have a doubt with the ingestion of observational data. </div>
<div><br></div><div>As I understand in the manual, I have concatenated upper air observations and surface observations in the same file (concretely NCEP ADP data for both). I want to run it with FD4=.TRUE., and I set intf4d=3600.</div>
<div><br></div><div>Then when I run OBSGRID, it looks like the program doesn't process periods 00 06 12 18 for surface fdda, but does it only for 03 09 15 21.</div><div><br></div><div>My question is, Am I doing it right? do I have to copy the 00 file and rename it with 03 so that the program can process it? In MM5 it was possible to set surface observations apart from upper air ones and also the program didn't need a file for each period of time, that's why I'm a bit confused.</div>
<div><br></div><div>Awainting your soonest reply</div><div><br></div><div>Thank You very much</div></span>