Synergetic Daily Aerosol Mass, Optical Depth and Type

Daily Aerosol Mass, Optical Depth and Type over Europe and Africa from AATSR/SCIAMACHY (ENVISAT)

ENVISAT daily aerosol parameters (particle mass concentrations, optical depth and type) on a 60x30 km2 resolution are provided in near-real time (approximately 12 hours after acquisition) over Europe and Africa. These results are retrieved from a synergetic exploitation of 2 sensors onboard ENVISAT, the spectrometer SCIAMACHY and the radiometer AATSR. Due to the scan mode and swath width of the instruments full cloud-free coverage at the equator is achieved after 12 days.

To avoid outliers following exclusion criteria shall be applied, where each pixel is excluded, if one or more of the 4 following criteria is met: a) lalb670 > 0.25, b) xerr > 0.02, c) aod550_error > 0.14, d) cloud_fraction > 0.35

Latest results

Daily Aerosol Mass Concentrations over Europe

Daily Aerosol Optical Depth at 550nm over Europe	Daily Aerosol Type over Europe

Daily Aerosol Optical Depth at 550nm over Europe and Africa	Daily Aerosol Type over Europe and Africa
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Archives

Documentation

SYNAER algorithm:

• algorithm specification document
• HDF data file description
• publications
• future plans and improvements
• processing status overview table (monthly, daily)
• version explanation

Validation

SYNAER ENVISAT version 2.0 validation

• case study validation

Background information

• Major users

Thomas Holzer-Popp, last modified: October 2005