MERRA2_400.tavg1_2d_aer_Nx.20160101.nc4

M2T1NXAER (or tavg1_2d_aer_Nx) is an hourly time-averaged 2-dimensional data collection in Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). This collection consists of assimilated aerosol diagnostics, such as column mass density of aerosol components (black carbon, dust, sea salt, sulfate, and organic carbon), surface mass concentration of aerosol components, and total extinction (and scattering ) aerosol optical thickness (AOT) at 550 nm. The total PM1.0, PM2.5, and PM10 may be derived with the formula described in the FAQs under the Documentation tab of this page. The data field is time-stamped with the central time of an hour starting from 00:30 UTC, e.g.: 00:30, 01:30, … , 23:30 UTC. MERRA-2 is the latest version of global atmospheric reanalysis for the satellite era produced by NASA Global Modeling and Assimilation Office (GMAO) using the Goddard Earth Observing System Model (GEOS) version 5.12.4. The dataset covers the period of 1980-pres

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Поље Вредност
Последње измене јун 1, 2025, 23:15 (UTC)
Креирано јун 1, 2025, 23:15 (UTC)
CheckSumType CRC32
CheckSumValue 2444722872
EastBoundingCoordinate 180.0
GranuleID MERRA2_400.tavg1_2d_aer_Nx.20160101.nc4
InsertDateTime 2019-07-08 07:09:58
InstrumentShortName MERRA-2
LocalGranuleID MERRA2_400.tavg1_2d_aer_Nx.20160101.nc4
LongName MERRA2 tavg1_2d_aer_Nx: 2d,1-Hourly,Time-averaged,Single-Level,Assimilation,Aerosol Diagnostics
NorthBoundingCoordinate 90.0
PSAName Comment
PSAValue GMAO filename: d5124_m2_jan10.tavg1_2d_aer_Nx.20160101.nc4
PlatformShortName MERRA-2
ProductionDateTime 2016-01-19 17:26:10
RangeBeginningDate 2016-01-01
RangeBeginningTime 00:00:00.000000
RangeEndingDate 2016-01-01
RangeEndingTime 23:59:59.000000
ShortName M2T1NXAER
SizeBytesDataGranule 500322425
SouthBoundingCoordinate -90.0
URL /data/MERRA2/M2T1NXAER.5.12.4/M2T1NXAER_5.12.4_dif.xml
VersionID 5.12.4
WestBoundingCoordinate -180.0
dataset-DOI: 10.5067/KLICLTZ8EM9D
dataset-Data Resolution
dataset-File Size: 481 MB per file
dataset-Format: netCDF
dataset-Longname: MERRA-2 tavg1_2d_aer_Nx: 2d,1-Hourly,Time-averaged,Single-Level,Assimilation,Aerosol Diagnostics V5.12.4
dataset-Shortname: M2T1NXAER
dataset-Spatial Coverage: -180.0,-90.0,180.0,90.0
dataset-Spatial: 0.5 ° x 0.625 °
dataset-Temporal Coverage: 1980-01-01 to  2025-05-01
dataset-Temporal: 1 hour
dataset-Version: 5.12.4
dataset-documentation-url https://goldsmr4.gesdisc.eosdis.nasa.gov/data/MERRA2/M2T1NXAER.5.12.4/doc/
dataset-name MERRA-2 tavg1_2d_aer_Nx: 2d,1-Hourly,Time-averaged,Single-Level,Assimilation,Aerosol Diagnostics 0.625 x 0.5 degree V5.12.4 (M2T1NXAER) at GES DISC
dataset-url https://doi.org/10.5067/KLICLTZ8EM9D
date-published 2015-07-07
file_type NetCDF-4
variables [{"Variable": "longitude ", "Shortname": "lon", "Units": "degrees_east"}, {"Variable": "latitude ", "Shortname": "lat", "Units": "degrees_north"}, {"Variable": "time ", "Shortname": "time", "Units": "minutes since 2024-06-01 00:30:00"}, {"Variable": "Black Carbon Angstrom parameter [470-870 nm] ", "Shortname": "BCANGSTR", "Units": "1"}, {"Variable": "Black Carbon Column Mass Density ", "Shortname": "BCCMASS", "Units": "kg m-2"}, {"Variable": "Black Carbon Extinction AOT [550 nm] ", "Shortname": "BCEXTTAU", "Units": "1"}, {"Variable": "Black Carbon column u-wind mass flux ", "Shortname": "BCFLUXU", "Units": "kg m-1 s-1"}, {"Variable": "Black Carbon column v-wind mass flux ", "Shortname": "BCFLUXV", "Units": "kg m-1 s-1"}, {"Variable": "Black Carbon Scattering AOT [550 nm] ", "Shortname": "BCSCATAU", "Units": "1"}, {"Variable": "Black Carbon Surface Mass Concentration ", "Shortname": "BCSMASS", "Units": "kg m-3"}, {"Variable": "DMS Column Mass Density __ENSEMBLE__ ", "Shortname": "DMSCMASS", "Units": "kg m-2"}, {"Variable": "DMS Surface Mass Concentration __ENSEMBLE__ ", "Shortname": "DMSSMASS", "Units": "kg m-3"}, {"Variable": "Dust Angstrom parameter [470-870 nm] ", "Shortname": "DUANGSTR", "Units": "1"}, {"Variable": "Dust Column Mass Density ", "Shortname": "DUCMASS", "Units": "kg m-2"}, {"Variable": "Dust Column Mass Density - PM 2.5 ", "Shortname": "DUCMASS25", "Units": "kg m-2"}, {"Variable": "Dust Extinction AOT [550 nm] - PM 2.5 ", "Shortname": "DUEXTT25", "Units": "1"}, {"Variable": "Dust Extinction AOT [550 nm] ", "Shortname": "DUEXTTAU", "Units": "1"}, {"Variable": "Dust column u-wind mass flux ", "Shortname": "DUFLUXU", "Units": "kg m-1 s-1"}, {"Variable": "Dust column v-wind mass flux ", "Shortname": "DUFLUXV", "Units": "kg m-1 s-1"}, {"Variable": "Dust Scattering AOT [550 nm] - PM 2.5 ", "Shortname": "DUSCAT25", "Units": "1"}, {"Variable": "Dust Scattering AOT [550 nm] ", "Shortname": "DUSCATAU", "Units": "1"}, {"Variable": "Dust Surface Mass Concentration ", "Shortname": "DUSMASS", "Units": "kg m-3"}, {"Variable": "Dust Surface Mass Concentration - PM 2.5 ", "Shortname": "DUSMASS25", "Units": "kg m-3"}, {"Variable": "Organic Carbon Angstrom parameter [470-870 nm] __ENSEMBLE__ ", "Shortname": "OCANGSTR", "Units": "1"}, {"Variable": "Organic Carbon Column Mass Density __ENSEMBLE__ ", "Shortname": "OCCMASS", "Units": "kg m-2"}, {"Variable": "Organic Carbon Extinction AOT [550 nm] __ENSEMBLE__ ", "Shortname": "OCEXTTAU", "Units": "1"}, {"Variable": "Organic Carbon column u-wind mass flux __ENSEMBLE__ ", "Shortname": "OCFLUXU", "Units": "kg m-1 s-1"}, {"Variable": "Organic Carbon column v-wind mass flux __ENSEMBLE__ ", "Shortname": "OCFLUXV", "Units": "kg m-1 s-1"}, {"Variable": "Organic Carbon Scattering AOT [550 nm] __ENSEMBLE__ ", "Shortname": "OCSCATAU", "Units": "1"}, {"Variable": "Organic Carbon Surface Mass Concentration __ENSEMBLE__ ", "Shortname": "OCSMASS", "Units": "kg m-3"}, {"Variable": "SO2 Column Mass Density __ENSEMBLE__ ", "Shortname": "SO2CMASS", "Units": "kg m-2"}, {"Variable": "SO2 Surface Mass Concentration __ENSEMBLE__ ", "Shortname": "SO2SMASS", "Units": "kg m-3"}, {"Variable": "SO4 Column Mass Density __ENSEMBLE__ ", "Shortname": "SO4CMASS", "Units": "kg m-2"}, {"Variable": "SO4 Surface Mass Concentration __ENSEMBLE__ ", "Shortname": "SO4SMASS", "Units": "kg m-3"}, {"Variable": "Sea Salt Angstrom parameter [470-870 nm] ", "Shortname": "SSANGSTR", "Units": "1"}, {"Variable": "Sea Salt Column Mass Density ", "Shortname": "SSCMASS", "Units": "kg m-2"}, {"Variable": "Sea Salt Column Mass Density - PM 2.5 ", "Shortname": "SSCMASS25", "Units": "kg m-2"}, {"Variable": "Sea Salt Extinction AOT [550 nm] - PM 2.5 ", "Shortname": "SSEXTT25", "Units": "1"}, {"Variable": "Sea Salt Extinction AOT [550 nm] ", "Shortname": "SSEXTTAU", "Units": "1"}, {"Variable": "Sea Salt column u-wind mass flux ", "Shortname": "SSFLUXU", "Units": "kg m-1 s-1"}, {"Variable": "Sea Salt column v-wind mass flux ", "Shortname": "SSFLUXV", "Units": "kg m-1 s-1"}, {"Variable": "Sea Salt Scattering AOT [550 nm] - PM 2.5 ", "Shortname": "SSSCAT25", "Units": "1"}, {"Variable": "Sea Salt Scattering AOT [550 nm] ", "Shortname": "SSSCATAU", "Units": "1"}, {"Variable": "Sea Salt Surface Mass Concentration ", "Shortname": "SSSMASS", "Units": "kg m-3"}, {"Variable": "Sea Salt Surface Mass Concentration - PM 2.5 ", "Shortname": "SSSMASS25", "Units": "kg m-3"}, {"Variable": "SO4 Angstrom parameter [470-870 nm] __ENSEMBLE__ ", "Shortname": "SUANGSTR", "Units": "1"}, {"Variable": "SO4 Extinction AOT [550 nm] __ENSEMBLE__ ", "Shortname": "SUEXTTAU", "Units": "1"}, {"Variable": "SO4 column u-wind mass flux __ENSEMBLE__ ", "Shortname": "SUFLUXU", "Units": "kg m-1 s-1"}, {"Variable": "SO4 column v-wind mass flux __ENSEMBLE__ ", "Shortname": "SUFLUXV", "Units": "kg m-1 s-1"}, {"Variable": "SO4 Scattering AOT [550 nm] __ENSEMBLE__ ", "Shortname": "SUSCATAU", "Units": "1"}, {"Variable": "Total Aerosol Angstrom parameter [470-870 nm] ", "Shortname": "TOTANGSTR", "Units": "1"}, {"Variable": "Total Aerosol Extinction AOT [550 nm] ", "Shortname": "TOTEXTTAU", "Units": "1"}, {"Variable": "Total Aerosol Scattering AOT [550 nm] ", "Shortname": "TOTSCATAU", "Units": "1"}]
xml-url https://goldsmr4.gesdisc.eosdis.nasa.gov/data/MERRA2/M2T1NXAER.5.12.4//2016/01//MERRA2_400.tavg1_2d_aer_Nx.20160101.nc4.xml