degrees_north Latitude latitude /latitude level satellite channel channels satellite channel up levels /levels degrees_east Longitude longitude /longitude time standard time minutes since 20040101 06:00:00 06:00:00 20040101 time /time channel wavelength micrometers 9.999999870e+14 sensor_band_central_radiation_wavelength wavelength /wavelength grid01 linear instantaneous omf K airs_aqua brightness temperature mean O-minus-F 9.999999870e+14 mean_omf /mean_omf grid01 linear instantaneous bias K airs_aqua brightness temperature mean bias 9.999999870e+14 mean_bias /mean_bias grid01 linear instantaneous bias K airs_aqua brightness temperature square root of variance bias 9.999999870e+14 stdv_bias /stdv_bias grid01 linear instantaneous obs K airs_aqua brightness temperature square root of variance observations 9.999999870e+14 stdv_obs /stdv_obs grid01 linear instantaneous obs K airs_aqua brightness temperature mean observations 9.999999870e+14 mean_obs /mean_obs grid01 linear instantaneous oma K airs_aqua brightness temperature mean O-minus-A 9.999999870e+14 mean_oma /mean_oma grid01 linear instantaneous omf K airs_aqua brightness temperature square root of variance O-minus-F 9.999999870e+14 stdv_omf /stdv_omf channel frequency gigahertz 9.999999870e+14 frequency /frequency grid01 linear instantaneous oma K airs_aqua brightness temperature square root of variance O-minus-A 9.999999870e+14 stdv_oma /stdv_oma grid01 linear instantaneous obs airs_aqua brightness temperature number observations count 9.999999870e+14 nobs_obs /nobs_obs standard File geos/das gsfc MERRA-2 Monthly Gridded Innovations and Observations airs_aqua M2_AIRS_AQUA MERRA-2 Monthly Gridded Innovations and Observation AIRS_AQUA 1 NetCDF-4 4 NASA Global Modeling and Assimilation Office These binned observations include parameters for bias and difference from analysis and first-guess. These data represent the observations assimilated during the processing of MERRA-2, which have been binned to the MERRA-2 grid. https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/ Geographic latitude/longitude WGS-84 merra2.airs_aqua.200401_06z.nc4 global NASA Global Modeling and Assimilation Office -180.0 179.375 0.5 0.625 0.5x0.625 10.5067/MEASURES/MERRA2_AIRS_AQUA merra2.airs_aqua.200401_06z.nc4 2004-01-01 03:00:00.000000 2004-01-31 08:59:59.999999 CF-1-8 2025-09-08T13:17:58Z https://doi.org -90.0 90.0 time