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MERRA 3-Hourly History Data Collections (3D)


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The MERRA is a NASA reanalysis for the satellite era using a major new version (V5) of the Goddard Earth Observing System (GEOS) Data Assimilation System (DAS). The MERRA focuses on historical analyses of the hydrological cycle on a broad range of weather and climate time scales.

This MERRA Instance of Giovanni focuses on visualizing and analyzing the MERRA 3-hourly 3D data from the MERRA HISTORY COLLECTIONS. All data used here are at MERRA reduced resolution of 1.25 longitude by 1.25 latitude degrees, with 42 vertical pressure levels.

Currently this instance contains only part of the MERRA 3-hourly 3D variables. The rest of them will be added in the future releases.


Select:
Parameters
         
Parameter Data Product Info
  3D cloud fraction MAT3CPRAD.5.2.0 MERRA 1979/01/01 - 2014/02/28
Parameter Data Product Info
  Air temperature MAI3CPASM.5.2.0 MERRA 1979/01/01 - 2014/02/28
  Eastward wind component MAI3CPASM.5.2.0 MERRA 1979/01/01 - 2014/02/28
  Ertel potential vorticity MAI3CPASM.5.2.0 MERRA 1979/01/01 - 2014/02/28
  Geopotential height MAI3CPASM.5.2.0 MERRA 1979/01/01 - 2014/02/28
  Northward wind component MAI3CPASM.5.2.0 MERRA 1979/01/01 - 2014/02/28
  Ozone mixing ratio MAI3CPASM.5.2.0 MERRA 1979/01/01 - 2014/02/28
  Relative humidity MAI3CPASM.5.2.0 MERRA 1979/01/01 - 2014/02/28
  Specific humidity MAI3CPASM.5.2.0 MERRA 1979/01/01 - 2014/02/28
Vertical Profile
Select a vertical profile range. The range selection is disabled unless a qualifying parameter is selected. In order to enable this option (and populate the list with values), select a parameter.
NOTE:  Selected 3D parameters must have the same 3rd dimension (e.g., pressure, altitude, wavelength, etc.) units in order to enable the vertical level menu.
Temporal
(Date Begin: 01 Jan 1979)
(Date End: 28 Feb 2014)
When applying the time-averaged data, the hour selection is stamped on the beginning of the interval over which the data are averaged.
NASA Responsible NASA Official: Steven.J.Kempler@nasa.gov
Web Curator: M. Hegde ‹gsfc-giovanni-disc@lists.nasa.gov›

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