MERRA-2 M2T1NXAER: Aerosol Diagnostics V5.12.4

Stay organized with collections Save and categorize content based on your preferences.
NASA/GSFC/MERRA/aer/2
Dataset Availability
1980-01-01T00:00:00Z–2022-10-31T23:00:00
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NASA/GSFC/MERRA/aer/2")
Tags
aerosol carbon mass merra nasa sea-salt so2 so4
aer
dust

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

NASA promotes the full and open sharing of all data with research and applications communities, private industry, academia, and the general public.