AERDB_D3_GEOLEO_Merged - MODIS+AHI+ABI+VIIRS/GEO-LEO Merged Deep Blue Aerosol daily 1x1 degree grid



The Level-3 (L3) Geostationary Earth Orbit (GEO)-Low-Earth Orbit (LEO) Merged Deep Blue Aerosol Daily 1 x 1-degree Gridded dataset is part of a 12-product suite produced by an Earth Science Research from Operational Geostationary Satellite Systems (ESROGSS)-funded project. The 12 products in this project include nine derived from three Geostationary Earth Observation (GEO) instruments and three from merged data from GEO and Low-Earth Orbit (LEO) instruments as summarized in the following table:

Platform Instrument Temporal Cadence Spatial Res. Product
GOES-16 Advanced Baseline Imager 30 Min. 10 km AERDB_L2_ABI_G16
GOES-17 Advanced Baseline Imager 30 Min. 10 km AERDB_L2_ABI_G17
Himawari-8 Advanced Himawari Imager 30 Min. 10 km AERDB_L2_AHI_H08
GOES-16 Advanced Baseline Imager Daily 1°×1° AERDB_D3_ABI_G16
GOES-17 Advanced Baseline Imager Daily 1°×1° AERDB_D3_ABI_G17
Himawari-8 Advanced Himawari Imager Daily 1°×1° AERDB_D3_AHI_H08
GOES-16 Advanced Baseline Imager Monthly 1°×1° AERDB_M3_ABI_G16
GOES-17 Advanced Baseline Imager Monthly 1°×1° AERDB_M3_ABI_G17
Himawari-8 Advanced Himawari Imager Monthly 1°×1° AERDB_M3_AHI_H08
Multiple* ABI, AHI, VIIRS, MODIS* 30 Min. 0.25°×0.25° AERDB_L2G_GEOLEO_Merged
Multiple* ABI, AHI, VIIRS, MODIS* Daily 1°×1° AERDB_D3_GEOLEO_Merged
Multiple* ABI, AHI, VIIRS, MODIS* Monthly 1°×1° AERDB_M3_GEOLEO_Merged
  • Includes G16-ABI, G17-ABI, H08-AHI, SNPP-VIIRS, NOAA20-VIIRS, Terra MODIS & Aqua MODIS

The L3 GEO-LEO Merged Deep Blue Aerosol daily product contains gridded Aerosol Optical Thickness (AOT) at 550 nm reference wavelength that are composited from the L2G product (AERDB_L2G_GEOLEO_Merged) using best-estimate AOT values. Please note that while the individual standalone gridded data layer for each instrument is calculated as the arithmetic mean, the merged AOT layer is derived via an error-weighted average approach. The final retrievals used in the aggregation process are QA-filtered best-estimate values for cells that are measured on the day of interest. Further, at least three such retrievals are required to render the validity of a grid cell on any given day. Each L3 daily aggregated datafile is spatially comprised of a 1˚ x 1˚ horizontal grid that exists for every 30 minutes. This first release of these products spans from May 2019 through April 2020 with a potential to generate additional temporal coverage in the future.

Each L3 GEO-LEO Merged Deep Blue Aerosol daily datafile contains the following Science Data Sets (SDS):

  GEO-LEO Merged Group SDS
1 Aerosol_Optical_Thickness_550_Count_Land
2 Aerosol_Optical_Thickness_550_Count_Land_Ocean
3 Aerosol_Optical_Thickness_550_Count_Ocean
4 Aerosol_Optical_Thickness_550_Land
5 Aerosol_Optical_Thickness_550_Land_Ocean
6 Aerosol_Optical_Thickness_550_Maximum_Land
7 Aerosol_Optical_Thickness_550_Maximum_Land_Ocean
8 Aerosol_Optical_Thickness_550_Maximum_Ocean
9 Aerosol_Optical_Thickness_550_Minimum_Land
10 Aerosol_Optical_Thickness_550_Minimum_Land_Ocean
11 Aerosol_Optical_Thickness_550_Minimum_Ocean
12 Aerosol_Optical_Thickness_550_Ocean
13 Aerosol_Optical_Thickness_550_Standard_Deviation_Land
14 Aerosol_Optical_Thickness_550_Standard_Deviation_Land_Ocean
15 Aerosol_Optical_Thickness_550_Standard_Deviation_Ocean
16 Solar_Zenith_Angle
  GEO SDSs (G16/ABI, G17/ABI, H08/AHI) & LEO SDSs (T/A: MODIS, SNPP/NOAA-20: VIIRS)
1 Aerosol_Optical_Thickness_550_Count_Land
2 Aerosol_Optical_Thickness_550_Count_Land_Ocean
3 Aerosol_Optical_Thickness_550_Count_Ocean
4 Aerosol_Optical_Thickness_550_Expected_Uncertainty_Land
5 Aerosol_Optical_Thickness_550_Expected_Uncertainty_Land_Ocean
6 Aerosol_Optical_Thickness_550_Expected_Uncertainty_Ocean
7 Aerosol_Optical_Thickness_550_Land
8 Aerosol_Optical_Thickness_550_Land_Ocean
9 Aerosol_Optical_Thickness_550_Ocean
10 Aerosol_Optical_Thickness_550_Standard_Deviation_Land
11 Aerosol_Optical_Thickness_550_Standard_Deviation_Land_Ocean
12 Aerosol_Optical_Thickness_550_Standard_Deviation_Ocean
13 Relative_Azimuth_Angle
14 Solar_Zenith_Angle
15 Viewing_Zenith_Angle

Links


Shortname: AERDB_D3_GEOLEO_Merged
Platform: GOES-16+GOES-17+Himawari-8+Aqua+Terra+NOAA-20+Suomi-NPP
Instrument: MODIS+AHI+ABI+VIIRS
Processing Level: Level-3
Data Format: netCDF4
Spatial Resolution: 1deg
Temporal Resolution: DAY=1
ArchiveSets: 5019
Collection: GEO-LEO Dark Target Aerosol and Deep Blue Aerosol Data Collection 1 (ArchiveSet 5019)
PGE Number: NONE
File Naming Convention:

Syntax: ESDT.AYYYYDDD.CCC.YYYYDDDHHMMSS.Format
Example: AERDB_D3_GEOLEO_Merged.A2020080.001.2024080022800.nc

  • ESDT Earth Science Data Type or Shortname
  • A Stands for Acquisition
  • YYYYDDD Data acquisition year and Day-of-year per the Julian Calendar
  • CCC Version ID of the data collection
  • YYYYDDDHHMMSS Processing year, Day-of-year, UTC time (hour, minutes, seconds)
  • Format File format suffix, which in the above case represents netCDF4
Keywords: GEO-LEO Merged, L3 Daily, AOT, ESROGSS GEO Deep Blue Aerosol project
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