Ancillary Global O3_AURAOMI and/or MET_NCEP not available.

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joaofelipecsantos
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Ancillary Global O3_AURAOMI and/or MET_NCEP not available.

by joaofelipecsantos » Mon Jan 15, 2024 10:11 am America/New_York

Dear,
I am using the ancillary files "N*_O3_AURAOMI_24h.hdf" and the 4 files "N*_MET_NCEP_6h.hdf. I am downloading from the Direct Data access (e.g. https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Ancillary/GLOBAL/2022/365/). These ancillary files were all available until December 31st of 2022. But, for the year 2023 these files are not all available. For example:
- January 1st of 2023: the directory has 4 files of "MET_NCEP_6h.hdf" but does not have the "O3_AURAOMI_24h.hdf" file (https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Ancillary/GLOBAL/2023/001/).
- March 1st of 2023: all ancillary files "N*_MET_NCEP_6h.hdf" and "N*_O3_AURAOMI_24h.hdf" not available (https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Ancillary/GLOBAL/2023/060/).
- March 28th of 2023: the directory does not have the 4 files of "N*_MET_NCEP_6h.hdf" but has the "N*_O3_AURAOMI_24h.hdf" file (https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Ancillary/GLOBAL/2023/087/).
My last access to the links above: January 15th of 2024.

I would like to know if these ancillary files will be available (and when) in the Data Access directory. Or if they are available in another website/directory. Or if they are no more available. Or if these datasets are no more provided (what could I use to replace these files?), etc.
Thank you in advance for the attention and help. Sincerely,
João.

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OB ODPS - towens
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Re: Ancillary Global O3_AURAOMI and/or MET_NCEP not available.

by OB ODPS - towens » Tue Jan 16, 2024 9:30 am America/New_York

Since R2022 we have switched to using the NRT GMAO FPIT and Refined MERRA2 products for our ancillary meteorological data.
I continued the NCEP data processing for a year to allow users time to make the transition.
We will no longer be staging the NCEP or Aura OMI data.
The latest NRT MET/OZ: https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Ancillary/GLOBAL/2024/015/
GMAO_FP.20240115T210000.MET.NRT.nc

You can also start using:
GMAO_IT.20240115T200000.MET.NRT.nc which is slated to replace GMAO_FP sometime in 2024.

The latest refined:
https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Ancillary/GLOBAL/2023/335
GMAO_MERRA2.20231130T100000.MET.nc

The refined MET/OZ is released in 1-month batches - typically on the 20th of the following month.

Tommy

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