[gradsusr] Reanalysis Question

[avi kojokro]

Hello mike.

I think I did not frame my question properly, or did not understand you.
I asked why there is no temperature data or height of  level 700 hpa?. I am
attaching a screenshot:
I circled in red marks what  missing t700 and h700?.


2013/4/5 Mike Bosilovich <mike.bosilovich at gmail.com>

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