102 NASA_GMAO

Project metadata
Project Title NASA_GMAO
Owners Global Modeling And Assimiliation Office - NASA
Project Abstract To support NASA’s satellite missions and field experiments, GMAO generates near-real-time atmospheric products using GEOS-5 and distributes them to a broad community of users.

102.1 MERRA-2_2000_2020

Accessibility Provision Status Licence
CARDAT Published other
Metadata fields
Short Name MERRA-2_2000_2020
Title MERRA-2_2000_2020
Creators Global Modeling And Assimiliation Office - NASA
Contact Email
Abstract

The Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) provides data beginning in 1980 and runs a few weeks behind real time. Alongside the meteorological data assimilation using a modern satellite database, MERRA-2 includes an interactive analysis of aerosols that feed back into the circulation, uses NASA’s observations of stratospheric ozone and temperature (when available), and takes steps towards representing cryogenic processes.

The initial published version was missing values for September 2020, so the corresponding data derived is also not present. This data was downloaded using the R package MERRAbin, and in particular the R function getMERRADataBox

Updated 2022-08-10: Updated version (designated r401) of September 2020 data downloaded and PM2.5 derived. Various other empty or corrupted data files replaced. Updated 2022-11-11: Derived daily aggregate data (mean of AEST 00:00 to 23:00 day) for each MERRA-2 variable, and calculated daily PM2.5 off daily means. Stored in data_derived_daily

https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/

The following variables from tavg1_2d_aer_Nx (M2T1NXAER): Aerosol Diagnostics (https://gmao.gsfc.nasa.gov/pubs/docs/Bosilovich785.pdf) were downloaded:

And stored in \data_provided

  1. BCSMASS: Black Carbon Surface Mass Concentration
  2. DUSMASS25: Dust Surface Mass Concentration - PM 2.5
  3. OCSMASS: Organic Carbon Surface Mass Concentration
  4. SO4SMASS: SO4 Surface Mass Concentration
  5. SSSMASS25: Sea Salt Surface Mass Concentration - PM 2.5
  6. TOTEXTTAU: Total Aerosol Extinction AOT [550 nm]
  7. TOTSCATAU: Total Aerosol Scattering AOT [550 nm]

daily PM2.5 was estimated using the following equation:

(DUSMASS25 + SSSMASS25 + BCSMASS + 1.4OCSMASS + 1.375SO4SMASS)*1e9

ref: https://www.sciencedirect.com/science/article/pii/S1352231015305136?via%3Dihub

And stored in \data_derived_daily/pm25
Study Extent Hourly 2000-2020, Australia.
Associated Parties Nicolas Borchers
Repository Path Environment_General/NASA_GMAO/MERRA-2_2000_2020
Repository Link https://cloud.car-dat.org/index.php/apps/files/?dir=/Environment_General/NASA_GMAO/MERRA-2_2000_2020
External Link
Recommended Citation Global Modeling and Assimilation Office (GMAO) (2015): MERRA-2 tavg1_2d_aer_Nx: 2d,1-Hourly,Time-averaged,Single-Level,Assimilation,Aerosol Diagnostics V5.12.4, Greenbelt, MD, USA, Goddard Earth Sciences Data and Information Services Center (GES DISC). Data downloaded from CARDAT. (Dataset). https://cloud.car-dat.org/index.php/apps/files/?dir=/Environment_General/NASA_GMAO/MERRA-2_2000_2020

102.2 MERRA-2_2021_2023

Accessibility Provision Status Licence
CARDAT Published other
Metadata fields
Short Name MERRA-2_2021_2023
Title MERRA-2_2021_2023
Creators Global Modeling And Assimiliation Office - NASA
Contact Email
Abstract

The Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) provides data beginning in 1980 and runs a few weeks behind real time. Alongside the meteorological data assimilation using a modern satellite database, MERRA-2 includes an interactive analysis of aerosols that feed back into the circulation, uses NASA’s observations of stratospheric ozone and temperature (when available), and takes steps towards representing cryogenic processes.

https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/

The following variables from tavg1_2d_aer_Nx (M2T1NXAER): Aerosol Diagnostics (https://gmao.gsfc.nasa.gov/pubs/docs/Bosilovich785.pdf) were downloaded and stored in \data_provided

  1. BCSMASS: Black Carbon Surface Mass Concentration
  2. DUSMASS25: Dust Surface Mass Concentration - PM 2.5
  3. OCSMASS: Organic Carbon Surface Mass Concentration
  4. SO4SMASS: SO4 Surface Mass Concentration
  5. SSSMASS25: Sea Salt Surface Mass Concentration - PM 2.5
  6. TOTEXTTAU: Total Aerosol Extinction AOT [550 nm]
  7. TOTSCATAU: Total Aerosol Scattering AOT [550 nm]

daily PM2.5 was estimated using the following equation:

(DUSMASS25 + SSSMASS25 + BCSMASS + 1.4OCSMASS + 1.375SO4SMASS)*1e9

ref: https://www.sciencedirect.com/science/article/pii/S1352231015305136?via%3Dihub

And stored in \data_derived_daily/pm25
Study Extent Hourly raw, daily derived, 2021-2023, Australia.
Associated Parties Nicolas Borchers, Cassandra Yuen
Repository Path Environment_General/NASA_GMAO/MERRA-2_2021_2023
Repository Link https://cloud.car-dat.org/index.php/apps/files/?dir=/Environment_General/NASA_GMAO/MERRA-2_2021_2023
External Link
Recommended Citation Global Modeling and Assimilation Office (GMAO) (2015): MERRA-2 tavg1_2d_aer_Nx: 2d,1-Hourly,Time-averaged,Single-Level,Assimilation,Aerosol Diagnostics V5.12.4, Greenbelt, MD, USA, Goddard Earth Sciences Data and Information Services Center (GES DISC). Data downloaded from CARDAT. (Dataset). https://cloud.car-dat.org/index.php/apps/files/?dir=/Environment_General/NASA_GMAO/MERRA-2_2021_2023