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Aeolus EOL L2C Products
The Aeolus End-of-Life (EOL) Level 2C (L2C) product provides Aeolus-assisted wind vector profile data from the EOL activities phase. Satellite and instruments test where performed during the EOL activities phase after the end of the nominal Aeolus mission from 1 May 2023 to 5 July 2025 and before the re-entry of the Aeolus satellite on 28 July 2025. The Aeolus Level 2C (L2C) product provides Aeolus-assisted wind vector profile data. The Aeolus L2C product is the result of the data assimilation of L2B products by the ECMWF Numerical Weather Predication (NWP) model. and contains the ECMWF model wind profiles of the zonal and meridional wind components at the Aeolus observation location after assimilation of Aeolus Level 2B wind along the orbit. The L2C product is provided both on observation scale (~87 km) and on smaller group scales (horizontal accumulation of measurements between ~3 km and ~87 km). The product ALD_U_N_2C is available as binary data block file (.DBL) with an additional header file (.HDR). L2C Rayleigh wind velocity result on observation resolution from seven orbits from 22 August 2022. Graphic obtained from VirES.
Aeolus L2B Products
The Aeolus Level 2B (L2B) product provides meteorologically representative Horizontal Line-of-sight (HLOS) wind components, derived from Aeolus Level 1B data. It is designed for the use in Numerical Weather Prediction (NWP) models and atmospheric scientific research. The L2B product is generated by processing Level 1B data, applying geophysical corrections and classification algorithms to produce high-quality wind observations. Wind retrievals are performed separately for the Mie and Rayleigh channels, resulting in four types of HLOS winds: Rayleigh-clear, Rayleigh-cloudy, Mie-clear, and Mie-cloudy. These are classified based on atmospheric optical properties, distinguishing between clear and cloudy conditions. Rayleigh HLOS winds undergo several corrections, e.g. the Rayleigh-Brillouin Correction (RBC) to account for temperature and pressure dependence of molecular backscatter using auxiliary meteorological data (AUX_MET and AUX_RBC), and the correction for Mie contamination addressing signal cross-talk for Rayleigh cloudy winds. Mie HLOS winds, by contrast, do not require auxiliary meteorological data. Additionally, a bias-correction is performed for orbital-varying wind biases. The L2B product is provided both on observation scale (~87 km) and on smaller group scales (horizontal accumulation of measurements between ~3 km and ~87 km). The product ALD_U_N_2B is available as binary data block file (.DBL) with an additional header file (.HDR). L2B Rayleigh wind velocity normalised by the orbit pass direction on observation resolution from seven orbits from 12 March 2019. Graphic obtained from VirES. Close up of the L2B Rayleigh wind velocity normalised by the orbit pass direction on observation resolution from the last orbit over Europe at the end of nominal Aeolus mission on 30 April 2023. Graphic obtained from VirES.
Aeolus EOL L2B Products
The Aeolus End-of-Life (EOL) Level 2B (L2B) product provides meteorologically representative Horizontal Line-of-sight (HLOS) wind components derived from Aeolus Level 1B data from the EOL activities phase. Satellite and instruments test where performed during the EOL activities phase after the end of the nominal Aeolus mission from 1 May 2023 to 5 July 2025 and before the re-entry of the Aeolus satellite on 28 July 2025.
Aeolus L2B BUFR Products
The Aeolus Level 2B (L2B) Binary Universal FoRmat (BUFR) product contains a subset of the of the L2B product in the World Meteorological Organisation (WMO) BUFR format to be used in Numerical Weather Prediction (NWP) data assimilation.
Aeolus L2A Products
The Aeolus Level 2A (L2A) product (ALD_U_N_2A) provides supplementary binary geophysical data on cloud and aerosol optical properties retrieved from the Level 1B (L1B) data. The L2A products contains e.g. geolocated consolidated backscatter and extinction profiles, lidar ratio, scene classification information, and attenuated backscatter signals. These optical properties are provided from different retrieval algorithms (SCA: Standard Correct Algorithm, MLE: Maximum Likelihood Estimator, and AEL-PRO: Aeolus Profile Algorithm). The L2A product is provided both on observation scale (~87 km) and on smaller group scales (horizontal accumulation of measurements between ~3 km and ~87 km) after applying scene classification. The product ALD_U_N_2A is available as binary data block file (.DBL) with an additional header file (.HDR). L2A Standard Correct Algorithm (SCA) mid bin backscatter on observation resolution from seven orbits from 12 March 2019. Graphic obtained from VirES. Close up of the L2A Standard Correct Algorithm (SCA) mid bin extinction on observation resolution from the last orbit over Europe at the end of nominal Aeolus mission on 30 April 2023. Graphic obtained from VirES.
Aeolus EOL L2A Products
The Aeolus End-of-Life (EOL) Level 2A (L2A) product provides supplementary binary geophysical data on cloud and aerosol optical properties retrieved from the Level 1B (L1B) data from the EOL activities phase. Satellite and instruments test where performed during the EOL activities phase after the end of the nominal Aeolus mission from 1 May 2023 to 5 July 2025 and before the re-entry of the Aeolus satellite on 28 July 2025.
Aeolus L1B Products
The Aeolus Level 1B (L1B) products (ALD_U_N_1B) provides binary geolocated calibrated observational data. The Aeolus L1B product is calibrated using information on instrument offsets and dark currents, corrections for solar background and the instrument responses in both channels. It contains, amongst others, both Rayleigh and Mie signals from the Rayleigh channel filters and Mie channel spectrometer counts, the signal-to-noise ratios SNR´s, the scattering ratio, and the uncorrected Horizontal Line-of-Sight (HLOS) wind with respect to atmospheric temperature and pressure effects. The L1B product is provided at both the measurement (~3 km) and observation (~87 km) horizontal resolution. The basic granularity is one L1B product file per orbit. The product ALD_U_N_1B is available as binary data block file (.DBL) with an additional header file (.HDR). L1B summed Rayleigh channels A and B signal intensity in Least Significant Bits (LSB) from seven orbits from 12 March 2019. Graphic obtained from VirES. Close up of L1B summed Rayleigh channels A and B signal intensity in Least Significant Bits (LSB) from the last orbit over Europe at the end of nominal Aeolus mission on 30 April 2023. Graphic obtained from VirES.
Aeolus L1A Products
The Aeolus Level 1A (L1A) product (ALD_U_N_1A) provides binary geolocated unprocessed data. The L1A product is an intermediate output of the Level 0 (L0) to Level 1B (L1B) processing chain and contains the geolocation, the satellite and instrument house-keeping data, and the Rayleigh and Mie spectrometer counts on the pixel scale of the Accumulation Charge-Coupled Devise (ACCD) detector. The L1A data is provided on measurement (~3 km) horizontal resolution. The basic granularity is one L1A product file per orbit. The product ALD_U_N_1A is available as binary data block file (.DBL) with an additional header file (.HDR). Illustration of seven geolocated orbits from 28 November 2022. Graphic obtained from VirES.
Aeolus L1A NetCDF Products
The Aeolus Level 1A (L1A) netCDF product (ALDUN1A_NC) provides a converted version of the L1A binary data block file (.DBL) to a netCDF file.
Aeolus L0 Products
The Aeolus Level 0 (L0) product (ALD_U_N_0) provides a cleaned and time-ordered version of the raw instrument data. The L0 product contains downlinked instrument, platform, orbit and scientific data sorted into measurement data sets. The basic granularity is one L0 product file per orbit. The product ALD_U_N_0 is available as binary data block file (.DBL) with an additional header file (.HDR).
Aeolus Additional Products
The Aeolus collection of additional products comprises the Annotated Instrument Source Packages (AISP), orbits files and a variety of auxiliary files for calibration and configuration used in the Aeolus products processing chain. The Aeolus AISP data product (TLMX__VC1) is the raw data downlinked from satellite and is available as binary data block file (.DBL) with an additional header file (.HDR). The auxiliary files cover the instrument and satellite characterization data (AUX_CHAR), the harmonic and range-dependent bias correction data (AUX_HBE, AUX_RDB), the in-flight calibration data (AUX_RRC, AUX_MRC, AUX_RBC, AUX_DCMZ, AUX_ZWC…), and the algorithm configuration parameters and settings (AUX_PAR). Furthermore, information on the atmospheric state (e.g. pressure, temperature, humidity etc. from the ECMWF Numerical Weather Predication (NWP) model) (AUX_MET) and an atmospheric backscatter-to-extinction ratio climatology (AUX_CLM) are available. The Aeolus auxiliary files are provided in Earth Explorer Format (.EEF).
Aeolus EOL L1A Products
The Aeolus End-of-Life (EOL) Level 1A (L1A) product (ALD_U_N_1A) provides binary geolocated unprocessed data. The L1A product is an intermediate output of the Level 0 (L0) to Level 1B (L1B) processing chain and contains the geolocation, the satellite and instrument house-keeping data, and the Rayleigh and Mie spectrometer counts on the pixel scale of the Accumulation Charge-Coupled Devise (ACCD) detector. Satellite and instrument tests were performed during the EOL activities phase after the end of the nominal Aeolus mission from 1 May 2023 to 5 July 2023 and before the re-entry of the Aeolus satellite on 28 July 2023. Illustration of seven geolocated orbits from 28 November 2022. Graphic obtained from VirES.
ERS SAR & Envisat ASAR Pyrenees mountains - L1 (IM/AP)
This is a thematic collection containing bulk processed ERS-1/2 SAR and Envisat ASAR Image- and Alternating Polarisation Mode Level 1 products covering the full available mission archives from 1991 to 2012 over the Pyrenees mountains. The collection is composed of the following product types nominally available via the ESA (A)SAR On-the-fly (OTF) processing service: SAR_IMP_1P - Level 1 Precision Image [ERS] ASA_IMP_1P - Level 1 Precision Image [Envisat] ASA_APP_1P - Level 1 AP Precision Image [Envisat] Detailed product characteristics and format information is available on the linked data description pages for each of the above listed datasets. The bulk processed Level 1 data are frame-based standard products normally covering approximately 15 seconds of acquisition. The products are distributed to users in Envisat format. The size of the full collection is approximately 2.1 TB.
ERS SAR & Envisat ASAR Scandinavia mountains - L1 (IM/AP)
This is a thematic collection containing bulk processed ERS-1/2 SAR and Envisat ASAR Image- and Alternating Polarisation Mode Level 1 products covering the full available mission archives from 1991 to 2012 over the Scandinavian mountains. The collection is composed of the following product types nominally available via the ESA (A)SAR On-the-fly (OTF) processing service: SAR_IMP_1P - Level 1 Precision Image [ERS] ASA_IMP_1P - Level 1 Precision Image [Envisat] ASA_APP_1P - Level 1 AP Precision Image [Envisat] Detailed product characteristics and format information is available on the linked data description pages for each of the above listed datasets. The bulk processed Level 1 data are frame-based standard products normally covering approximately 15 seconds of acquisition. The products are distributed to users in Envisat format. The size of the full collection is approximately 23.7 TB.
ERS SAR Svalbard coverage - L1 (IM)
This is a thematic collection containing bulk processed ERS-1/2 SAR Image Mode Level 1 products covering the full available mission archives from 1991 to 2011 over Svalbard, Norway. The collection is composed of the following product type nominally available via the ESA (A)SAR On-the-fly (OTF) processing service: SAR_IMS_1P - Level 1 Single Look Complex [ERS] Detailed product characteristics and format information is available on the linked data description page for the above listed dataset. The bulk processed Level 1 data are frame-based standard products normally covering approximately 15 seconds of acquisition. The products are distributed to users in Envisat format. The size of the full collection is approximately 10.3 TB.
ERS SAR & Envisat ASAR Austria coverage - L1 (IM)
This is a thematic collection containing bulk processed ERS-1/2 SAR and Envisat ASAR Image Mode Level 1 products covering, or intersecting, the full available mission archives from 1991 to 2012 over the area of Austria. The collection is composed of the following product types nominally available via the ESA (A)SAR On-the-fly (OTF) processing service: SAR_IMS_1P - Level 1 Single Look Complex [ERS] SAR_IMP_1P - Level 1 Precision Image [ERS] ASA_IMS_1P - Level 1 Single Look Complex [Envisat] ASA_IMP_1P - Level 1 Precision Image [Envisat] Detailed product characteristics and format information is available on the linked data description pages for each of the above listed datasets. The bulk processed Level 1 products over Austria are segment based. They have a variable size (with a duration from approximately 15 to approximately 108 seconds) and are usually longer than the equivalent frame-based standard products generated by the ESA (A)SAR On-the-fly (OTF) service normally covering approximately 15 seconds of acquisition. The products are distributed to users in Envisat format. The size of the full collection is approximately 4 TB.
ERS SAR & Envisat ASAR Iceland mountains - L1 (IM/AP)
This is a thematic collection containing bulk processed ERS-1/2 SAR and Envisat ASAR Image- and Alternating Polarisation Mode Level 1 products covering the full available mission archives from 1991 to 2012 over the Iceland mountains. The collection is composed of the following product types nominally available via the ESA (A)SAR On-the-fly (OTF) processing service: SAR_IMP_1P - Level 1 Precision Image [ERS] ASA_IMP_1P - Level 1 Precision Image [Envisat] ASA_APP_1P - Level 1 AP Precision Image [Envisat] Detailed product characteristics and format information is available on the linked data description pages for each of the above listed datasets. The bulk processed Level 1 data are frame-based standard products normally covering approximately 15 seconds of acquisition. The products are distributed to users in Envisat format. The size of the full collection is approximately 2.6 TB.
ERS SAR & Envisat ASAR Italy volcanoes - L1 (IM)
This is a thematic collection containing bulk processed ERS-1/2 SAR and Envisat ASAR Image Mode Level 1 products over the Italian volcanoes. The collection is covering the full available mission archives for Envisat Phase 2 / ASAR swath 2 matching the ERS SAR passes during the period 1992 to 2011. The collection is composed of the following product types nominally available via the ESA (A)SAR On-the-fly (OTF) processing service: SAR_IMS_1P - Level 1 Single Look Complex [ERS] ASA_IMS_1P - Level 1 Single Look Complex [Envisat] Detailed product characteristics and format information is available on the linked data description pages for each of the above listed datasets. The bulk processed Level 1 data are frame-based standard products normally covering approximately 15 seconds of acquisition. The products are distributed to users in Envisat format. The size of the full collection is approximately 3.5 TB.
ERS SAR & Envisat ASAR Alps mountains - L1 (IM/AP)
This is a thematic collection containing bulk processed ERS-1/2 SAR and Envisat ASAR Image- and Alternating Polarisation Mode Level 1 products covering the full available mission archives from 1991 to 2012 over the European Alps. The collection is composed of the following product types nominally available via the ESA (A)SAR On-the-fly (OTF) processing service: SAR_IMP_1P - Level 1 Precision Image [ERS] ASA_IMP_1P - Level 1 Precision Image [Envisat] ASA_APP_1P - Level 1 AP Precision Image [Envisat] Detailed product characteristics and format information is available on the linked data description pages for each of the above listed datasets. The bulk processed Level 1 data are frame-based standard products normally covering approximately 15 seconds of acquisition. The products are distributed to users in Envisat format. The size of the full collection is approximately 9.6 TB.
ERS SAR & Envisat ASAR Alaska mountains - L1 (IM/AP)
This is a thematic collection containing bulk processed ERS-1/2 SAR and Envisat ASAR Image- and Alternating Polarisation Mode Level 1 Precision products covering the full available mission archives from 1991 to 2012 over the Alaska mountains. The collection is composed of the following product types nominally available via the ESA (A)SAR On-the-fly (OTF) processing service: SAR_IMP_1P - Level 1 Precision Image [ERS] ASA_IMP_1P - Level 1 Precision Image [Envisat] ASA_APP_1P - Level 1 AP Precision Image [Envisat] Detailed product characteristics and format information is available on the linked data description pages for each of the above listed datasets. The bulk processed Level 1 data are frame-based standard products normally covering approximately 15 seconds of acquisition. The products are distributed to users in Envisat format. The size of the full collection is approximately 15.1 TB.