One way I know how to convert netcdf to grib is by using the WRF Post Processor (generally only works if the model you're running is the WRF though).<br><br>Regarding the linear interpolation of time between sets, I don't think you can create new files that have interpolated data in them, but you can always compute the interpolated values yourself in Grads and just display them. For example, if you have wind speed 24 hours apart, you could compute a linearly interpolated value of wind speed at a given hour in between by defining a variable this way:<br>
<br>define dwinddt = windspeed(t=t1) - windspeed(t=t0)/(24 hours, 1440 minutes, 86400 s)<br>display windspeed(t=t0) + dwinddt*(1 hr, 60 min, or 3600 s depending on what unit you want to use)<br><br>Hope this helps.<br><br>
Jeff Duda<br><br><div class="gmail_quote">On Fri, Feb 12, 2010 at 3:20 PM, Jason Snyder <span dir="ltr"><<a href="mailto:jmssnyder@ucdavis.edu">jmssnyder@ucdavis.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>I am running an aerosol puff model that can only use GRIB data sets and also needs the data to be in hourly time steps. The data I currently have is in daily time steps and I was wondering if I could interpolate this data to have to display in hourly time steps. </div>
<div> </div>
<div>Also how do I convert netcdf to grib?</div>
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<div>Thanks,</div>
<div> </div><font color="#888888">
<div>Jason</div>
</font></blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Iowa State University<br>Meteorology Graduate Student<br>3134 Agronomy Hall<br><a href="http://www.meteor.iastate.edu/~jdduda">www.meteor.iastate.edu/~jdduda</a><br>