Dataset
Swansea University Aerosol Algorithm: (Advanced) Along-track Scanning Radiometers Monthly Collated Level-3 Product v4.35.1
Abstract
This dataset provides global Aerosol Optical Depth (AOD) from the Along-Track Scanning Radiometer-2 (ATSR-2) and Advanced Along-Track Scanning Radiometer (AATSR), presented on a 1° latitude-longitude grid, running from 1995-2003 (ATSR-2) and 2002-2012 (AATSR).
The product contains the monthly mean and standard deviation of the total AOD and fine-mode AOD at 550nm retrieved within each grid cell. An uncertainty estimate is provided for the total AOD. It also includes a number of associated quantities determined consistently with the retrieval: AOD at 670nm, 870nm and 1600nm; surface reflectance at 550nm, 670nm, 870nm and 1600nm; Angstrom exponent, non-spherical dust AOD, absorbing AOD and single scattering albedos all at 550nm; and the cloud and land fractions.
The data here are part of a set of data that have been produced by Swansea University as part of the Earth Observation Climate Information Service (EOCIS) project, using algorithms developed under the European Space Agency’s (ESA) Climate Change Initiative for Aerosol project. The combined data collection covers the periods 1995-2012 and 2016 to present.
Data are made freely and openly available under a Creative Commons License by Attribution (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
When citing this dataset please also cite the associated data paper:
Pearson, K.J., North, P.R.J., Heckel, A., Hornero, A., Kinne, S., Popp, T., Sogacheva, L., Griesfeller, J., Atmospheric aerosol measurements from the ATSR-SLSTR series of dual-view satellite instruments 1995-2002. Scientific Data, 12, 410 https://doi.org/10.1038/s41597-025-04694-6
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s): http://creativecommons.org/licenses/by/4.0/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
This dataset was produced by Swansea University in the context of the Earth Observation Climate Information Service project, using algorithms developed under the European Space Agency’s (ESA) Climate Change Initiative for Aerosol project. |
| Data Quality: |
For information on the data quality see the related documentation
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| File Format: |
Data are in NetCDF format
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Related Documents
Process overview
Instrument/Platform pairings
| Along Track Scanning Radiometer 2 (ATSR-2) | Deployed on: European Remote Sensing satellite 2 - ERS-2 |
| Advanced Along-Track Scanning Radiometer (AATSR) | Deployed on: Envisat |
Computation Element: 1
| Title | Derivation of the Swansea University Global Aerosol Optical Depth products from the Along-Track Scanning Radiometers and Sea and Land Surface Temperature Radiometers |
| Abstract | For information on the derivation of the Swansea University Global Aerosol Optical Depth products see the associated documentation. |
| Input Description | None |
| Output Description | None |
| Software Reference | None |
| Output Description | None |
- units: 1
- long_name: Mean of L2 Uncertainty on AOT at 670 nm
- var_id: AOD670_uncertainty_mean
- units: 1
- long_name: Mean of L2 uncertainty on AOT at 1600 nm
- var_id: AOD1600_uncertainty_mean
- units: 1
- long_name: Mean of L2 uncertainty on AOT at 550 nm
- var_id: AOD550_uncertainty_mean
- units: 1
- long_name: Mean of L2 uncertainty on AOT at 870 nm
- var_id: AOD870_uncertainty_mean
- units: 1
- standard_name: atmosphere_optical_thickness_due_to_ambient_aerosol
- long_name: absorbing AOD
- var_id: AAOD550_mean
- units: 1
- standard_name: atmosphere_optical_thickness_due_to_ambient_aerosol
- long_name: aerosol optical thickness at 1600 nm
- var_id: AOD1600_mean
- units: 1
- standard_name: atmosphere_optical_thickness_due_to_ambient_aerosol
- long_name: aerosol optical thickness at 550 nm
- var_id: AOD550_mean
- units: 1
- standard_name: atmosphere_optical_thickness_due_to_ambient_aerosol
- long_name: aerosol optical thickness at 670 nm
- var_id: AOD670_mean
- units: 1
- standard_name: atmosphere_optical_thickness_due_to_ambient_aerosol
- long_name: aerosol optical thickness at 870 nm
- var_id: AOD870_mean
- units: 1
- standard_name: angstrom_exponent_of_ambient_aerosol_in_air
- long_name: angstrom exponent computed on AOD550nm and AOD870nm
- var_id: ANG550_870_mean
- units: 1
- standard_name: atmosphere_optical_thickness_due_to_ambient_aerosol
- long_name: fine mode AOD
- var_id: FM_AOD550_mean
- units: 1
- long_name: maximum L2 Uncertainty on AOT at 670 nm
- var_id: AOD670_uncertainty_max
- units: 1
- long_name: maximum L2 uncertainty on AOT at 1600 nm
- var_id: AOD1600_uncertainty_max
- units: 1
- long_name: maximum L2 uncertainty on AOT at 550 nm
- var_id: AOD550_uncertainty_max
- units: 1
- long_name: maximum L2 uncertainty on AOT at 870 nm
- var_id: AOD870_uncertainty_max
- units: 1
- long_name: mean bidirectional surface reflectance (nadir)
- var_id: surface_reflectance1600_mean
- units: 1
- standard_name: cloud_area_fraction
- long_name: mean fraction of cloud flagged pixels in 10km bin
- var_id: cloud_fraction_mean
- units: 1
- standard_name: land_area_fraction
- long_name: mean land fraction
- var_id: surface_type_number_mean
- units: 1
- long_name: minimum L2 Uncertainty on AOT at 670 nm
- var_id: AOD670_uncertainty_min
- units: 1
- long_name: minimum L2 uncertainty on AOT at 1600 nm
- var_id: AOD1600_uncertainty_min
- units: 1
- long_name: minimum L2 uncertainty on AOT at 550 nm
- var_id: AOD550_uncertainty_min
- units: 1
- long_name: minimum L2 uncertainty on AOT at 870 nm
- var_id: AOD870_uncertainty_min
- units: 1
- standard_name: atmosphere_optical_thickness_due_to_ambient_aerosol
- long_name: non-spherical dust AOD
- var_id: D_AOD550_mean
- units: 1
- long_name: number of retrieval pixels in grid cell
- var_id: pixel_count
- units: 1
- var_id: AOD870_uncertainty
- long_name: propagated L2 uncertainty aerosol optical thickness at 870 nm
- units: 1
- var_id: AOD1600_uncertainty
- long_name: propagated L2 uncertainty in aerosol optical thickness at 1600 nm
- units: 1
- var_id: AOD550_uncertainty
- long_name: propagated L2 uncertainty in aerosol optical thickness at 550 nm
- units: 1
- var_id: AOD670_uncertainty
- long_name: propagated L2 uncertainty in aerosol optical thickness at 670 nm
- units: 1
- long_name: single scattering albedo at 550nm
- var_id: SSA550_mean
- units: 1
- long_name: standard deviation absorbing AOD
- var_id: AAOD550_sdev
- units: 1
- long_name: standard deviation aerosol optical thickness at 1600 nm
- var_id: AOD1600_sdev
- units: 1
- long_name: standard deviation aerosol optical thickness at 550 nm
- var_id: AOD550_sdev
- units: 1
- long_name: standard deviation aerosol optical thickness at 670 nm
- var_id: AOD670_sdev
- units: 1
- long_name: standard deviation aerosol optical thickness at 870 nm
- var_id: AOD870_sdev
- units: 1
- long_name: standard deviation angstrom exponent computed on AOD550nm and AOD870nm
- var_id: ANG550_870_sdev
- units: 1
- long_name: standard deviation fine mode AOD
- var_id: FM_AOD550_sdev
- units: 1
- long_name: standard deviation mean bidirectional surface reflectance (nadir)
- var_id: surface_reflectance670_sdev
- units: 1
- long_name: standard deviation mean fraction of cloud flagged pixels in 10km bin
- var_id: cloud_fraction_sdev
- units: 1
- standard_name: land_area_fraction
- long_name: standard deviation mean land fraction
- var_id: surface_type_number_sdev
- units: 1
- long_name: standard deviation non-spherical dust AOD
- var_id: D_AOD550_sdev
- units: 1
- long_name: standard deviation of L2 Uncertainty on AOT at 550 nm
- var_id: AOD550_uncertainty_sdev
- units: 1
- long_name: standard deviation of L2 Uncertainty on AOT at 670 nm
- var_id: AOD670_uncertainty_sdev
- units: 1
- long_name: standard deviation of L2 uncertainty on AOT at 1600 nm
- var_id: AOD1600_uncertainty_sdev
- units: 1
- long_name: standard deviation of L2 uncertainty on AOT at 870 nm
- var_id: AOD870_uncertainty_sdev
- units: 1
- long_name: standard deviation of SSA
- var_id: SSA550_sdev
Co-ordinate Variables
- units: degrees_north
- standard_name: latitude
- var_id: latitude
- long_name: latitude
- units: degrees_east
- standard_name: longitude
- var_id: longitude
- long_name: longitude
Temporal Range
1995-06-01T00:00:00
2012-04-08T23:59:59
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
|
-90.0000° |