<div dir="ltr"><div><div>Yes, The GEOS5 output diagnostics for the MERRA data do not extrapolate data for pressure levels greater than the surface pressure, near topography. Care must be taken when comparing MERRA to other data that do extrapolate underground.<br>
<br><a href="http://gmao.gsfc.nasa.gov/research/merra/pressure_surface.php">http://gmao.gsfc.nasa.gov/research/merra/pressure_surface.php</a><br><br></div>There is a third party routine to fill those data:<br><br><a href="https://reanalyses.org/atmosphere/extrapolation-merra-reanalyses-obtain-continuous-fields">https://reanalyses.org/atmosphere/extrapolation-merra-reanalyses-obtain-continuous-fields</a><br>
<br></div>Mike<br><div><div><br><br></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Apr 5, 2013 at 9:51 AM, avi kojokro <span dir="ltr"><<a href="mailto:kojokroavi@gmail.com" target="_blank">kojokroavi@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="rtl"><div dir="ltr" style="text-align:left">HI mike<br><br><span lang="en"><span>Thanks for the reply</span><span>.</span><br>
<br><span>I know</span> <span>that in</span> <span>this</span> <span>server</span> <span>has the</span> <span>monthly average</span> <span>is ready for use</span><br>
<br><span><a href="http://goldsmr2.sci.gsfc.nasa.gov/dods/MATMNXSLV.info" target="_blank">http://goldsmr2.sci.gsfc.nasa.gov/dods/MATMNXSLV.info</a></span><br><br><span>I'm doing</span> <span>a monthly average</span> <span>of March</span><span>,</span> <span>from</span> <span>1979</span> <span>to 2012</span> <span>and then</span> <span>compare that</span> <span>to the monthly average</span> <span>of March</span> <span>2013</span></span>.<br>
<br><span lang="en"><span>I have another</span> <span>question about</span> <span>MERRA</span><span>.</span><br><br> <span>Why in</span> <span>this</span> <span>server</span><span>:</span><br>
<br> <span><a href="http://goldsmr2.sci.gsfc.nasa.gov/dods/MAT1NXSLV.info" target="_blank">http://goldsmr2.sci.gsfc.nasa.gov/dods/MAT1NXSLV.info</a></span><br><br> <span>And also</span> <span>on this server</span><span>:</span><br>
<br> <span><a href="http://goldsmr2.sci.gsfc.nasa.gov/dods/MATMNXSLV.info" target="_blank">http://goldsmr2.sci.gsfc.nasa.gov/dods/MATMNXSLV.info</a></span><br><br> <span>there is missing data</span> <span>on the</span> <span>level of</span> <span>700</span> <span>MB ?.<span class="HOEnZb"><font color="#888888"><br>
<br></font></span></span></span></div><span class="HOEnZb"><font color="#888888"><div dir="ltr" style="text-align:left"><span lang="en"><span>avi.<br></span></span></div><div dir="ltr" style="text-align:left"><br><br></div>
</font></span></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra">
<br><br><div class="gmail_quote"><div dir="ltr">2013/4/5 Mike Bosilovich <span dir="ltr"><<a href="mailto:mike.bosilovich@gmail.com" target="_blank">mike.bosilovich@gmail.com</a>></span></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Avi,<br>
<br>
The procedure we use to release data is discussed here:<br>
<a href="http://gmao.gsfc.nasa.gov/research/merra/faq.php" target="_blank">http://gmao.gsfc.nasa.gov/research/merra/faq.php</a><br>
<br>
question 1, on the FAQ list :-) However, in reviewing that, I think<br>
it's become dated. The near real time data are intended to be<br>
processed within two weeks of the end of a month. After that, data and<br>
automated quality checks are reviewed for problems. In January, we did<br>
have to hold data for apparent problems during the processing.<br>
<br>
In going back through emails, February data was released by the GMAO<br>
on Mar 19. After which, the GES DISC registers the data on their<br>
servers. While it all takes some time, and the people who are doing<br>
it have other tasks as well. This is a stable way to routinely update<br>
the data, and ensure we are not posting data with problems. While<br>
problems are rare, its best to look at the data before releasing to<br>
the community.<br>
<br>
Thanks for your interest in MERRA. Oh, and I notice that you are<br>
computing monthly means, and wanted to be sure you know that we have<br>
precomputed monthly averages on hat server. While there are many<br>
reasons to do this for yourself, if you just need monthlies, then<br>
using the precomputed data would be more efficient.<br>
<br>
mike<br>
<div><div><br>
On Fri, Apr 5, 2013 at 6:38 AM, avi kojokro <<a href="mailto:kojokroavi@gmail.com" target="_blank">kojokroavi@gmail.com</a>> wrote:<br>
> Hello, Does anyone know the products of MERRA at this link?.<br>
><br>
> <a href="http://goldsmr2.sci.gsfc.nasa.gov/dods/" target="_blank">http://goldsmr2.sci.gsfc.nasa.gov/dods/</a><br>
><br>
><br>
> I use the number 10 and number 16 to make monthly average calculation.<br>
> The question is, does anyone know when these servers are updated?, We are<br>
> now in early April, but these servers is updated by the end of February.<br>
><br>
> Regards<br>
><br>
> avi.<br>
><br>
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