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MERRA Hourly History Data Collections (2D)

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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 hourly 2D data from the MERRA HISTORY COLLECTIONS. All data used here are at GEOS-5 native resolution of 2/3 longitude by 1/2 latitude degrees.

Currently this instance contains only part of the MERRA hourly 2D variables. The rest of them will be added in the future releases.

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Parameters

Display: Data Product Info Units

Atmospheric single-level diagnostics (2/3 x 1/2 horizontal grids, hourly time-averaged)

Parameter	Parameter Units	Data Product Info
Cloud-top pressure	hPa	MAT1NXSLV.5.2.0	MERRA	1979/01/01 - 2013/04/30
Cloud-top temperature	K	MAT1NXSLV.5.2.0	MERRA	1979/01/01 - 2013/04/30
Sea level pressure	hPa	MAT1NXSLV.5.2.0	MERRA	1979/01/01 - 2013/04/30
Surface skin temperature	K	MAT1NXSLV.5.2.0	MERRA	1979/01/01 - 2013/04/30

Surface turbulent flux diagnostics (2/3 x 1/2 horizontal grids, hourly time-averaged)

Parameter	Parameter Units	Data Product Info
Latent heat flux (positive upward)	W/m2	MAT1NXFLX.5.2.0	MERRA	1979/01/01 - 2013/04/30
Sensible heat flux (positive upward)	W/m2	MAT1NXFLX.5.2.0	MERRA	1979/01/01 - 2013/04/30
Surface evaporation	kg/m2/s	MAT1NXFLX.5.2.0	MERRA	1979/01/01 - 2013/04/30
Total surface precipitation flux	kg/m2/s	MAT1NXFLX.5.2.0	MERRA	1979/01/01 - 2013/04/30

Surface and TOA radiation fluxes (2/3 x 1/2 horizontal grids, hourly time-averaged)

Parameter	Parameter Units	Data Product Info
Surface albedo	fraction	MAT1NXRAD.5.2.0	MERRA	1979/01/01 - 2013/04/30
Surface emissivity	fraction	MAT1NXRAD.5.2.0	MERRA	1979/01/01 - 2013/04/30

Vertical integrals of quantities (2/3 x 1/2 horizontal grids, hourly instantaneous)

Parameter	Parameter Units	Data Product Info
Total Q vapor (Total precipitable water)	kg/m2	MAI1NXINT.5.2.0	MERRA	1979/01/01 - 2013/04/30

Spatial

Please type in the spatial coordinates instead of selecting them via mouse. Enable JavaScript for better map features.

Enter latitude/longitude coordinates in the fields below.

West Longitude:		North Latitude:		South Latitude:		East Longitude:

Temporal

Begin Date	Year Month Day Hour (Date Begin: 01 Jan 1979)
End Date	Year Month Day Hour (Date End: 30 Apr 2013)
When applying the time-averaged data, the hour selection is stamped on the beginning of the interval over which the data are averaged.

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Responsible NASA Official: Steven.J.Kempler@nasa.gov
Web Curator: M. Hegde ‹gsfc-giovanni-disc@lists.nasa.gov›

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