MERRA-2 M2T1NXAER: Aerosol Diagnostics V5.12.4

NASA/GSFC/MERRA/aer/2
Dataset Availability
1980-01-01T00:00:00Z–2024-11-01T23:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NASA/GSFC/MERRA/aer/2")
Cadence
1 Hour
Tags
aerosol carbon dust mass merra nasa sea-salt so2 so4

Description

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 in the FAQ

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-present with the latency of ~3 weeks after the end of a month.

Bands

Resolution
69375 meters

Y Resolution
55000 meters

Bands

Name Units Description
BCANGSTR

Black carbon angstrom parameter [470-870 nm]
BCCMASS kg/m^2

Black carbon column mass density
BCEXTTAU

Black carbon extinction AOT [550 nm]
BCFLUXU kg/m/s

Black carbon column u-wind mass flux
BCFLUXV kg/m/s

Black carbon column v-wind mass flux
BCSCATAU

Black carbon scattering AOT [550 nm]
BCSMASS kg/m^3

Black carbon surface mass concentration
DMSCMASS kg/m^2

Dms column mass density
DMSSMASS kg/m^3

Dms surface mass concentration
DUANGSTR

Dust angstrom parameter [470-870 nm]
DUCMASS25 kg/m^2

Dust column mass density - PM2.5
DUCMASS kg/m^2

Dust column mass density
DUEXTT25

Dust extinction AOT [550 nm] - PM2.5
DUEXTTAU

Dust extinction AOT [550 nm]
DUFLUXU kg/m/s

Dust column u-wind mass flux
DUFLUXV kg/m/s

Dust column v-wind mass flux
DUSCAT25

Dust scattering AOT [550 nm] - PM2.5
DUSCATAU

Dust scattering AOT [550 nm]
DUSMASS25 kg/m^3

Dust surface mass concentration - PM2.5
DUSMASS kg/m^3

Dust surface mass concentration
OCANGSTR

Organic carbon angstrom parameter [470-870 nm]
OCCMASS kg/m^2

Organic carbon column mass density
OCEXTTAU

Organic carbon extinction AOT [550 nm]
OCFLUXU kg/m/s

Organic carbon column u-wind mass flux
OCFLUXV kg/m/s

Organic carbon column v-wind mass flux
OCSCATAU

Organic carbon scattering AOT [550 nm]
OCSMASS kg/m^3

Organic carbon surface mass concentration
SO2CMASS kg/m^2

So2 column mass density
SO2SMASS kg/m^3

So2 surface mass concentration
SO4CMASS kg/m^2

SO4 column mass density
SO4SMASS kg/m^3

SO4 surface mass concentration
SSANGSTR

Sea salt angstrom parameter [470-870 nm]
SSCMASS25 kg/m^2

Sea salt column mass density - PM2.5
SSCMASS kg/m^2

Sea salt column mass density
SSEXTT25

Sea salt extinction AOT [550 nm] - PM2.5
SSEXTTAU

Sea salt extinction AOT [550 nm]
SSFLUXU kg/m/s

Sea salt column u-wind mass flux
SSFLUXV kg/m/s

Sea salt column v-wind mass flux
SSSCAT25

Sea salt scattering AOT [550 nm] - PM2.5
SSSCATAU

Sea salt scattering AOT [550 nm]
SSSMASS25 kg/m^3

Sea salt surface mass concentration - PM2.5
SSSMASS kg/m^3

Sea salt surface mass concentration
SUANGSTR

SO4 angstrom parameter [470-870 nm]
SUEXTTAU

SO4 extinction AOT [550 nm]
SUFLUXU kg/m/s

SO4 column u-wind mass flux
SUFLUXV kg/m/s

SO4 column v-wind mass flux
SUSCATAU

SO4 scattering AOT [550 nm]
TOTANGSTR

Total aerosol angstrom parameter [470-870 nm]
TOTEXTTAU

Total aerosol extinction AOT [550 nm]
TOTSCATAU

Total aerosol scattering AOT [550 nm]

Terms of Use

Terms of Use

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Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('NASA/GSFC/MERRA/aer/2')
                  .filter(ee.Filter.date('2022-02-01', '2022-02-02'));
var black_carbon_column_u_wind_mass_flux = dataset.select('BCFLUXU');
var bccVis = {
  min: -0.0000116,
  max: 0.0000165,
  palette: ['001137', '01abab', 'e7eb05', '620500']
};
Map.setCenter(-95.62, 39.91, 2);
Map.addLayer(black_carbon_column_u_wind_mass_flux, bccVis);
Open in Code Editor
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, …
NASA/GSFC/MERRA/aer/2, aerosol,carbon,dust,mass,merra,nasa,sea-salt,so2,so4
1980-01-01T00:00:00Z/2024-11-01T23:00:00Z
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