What question did this study set out to answer?

The aim is to enhance the HETEAC aerosol classification model to include stratospheric aerosol features.

April 13, 20260 citations

Introduction of stratospheric aerosol features in EarthCARE's aerosol classification model

AFAthena A. Floutsi HBHolger Baars GMGeorg H. Müller

Key Points

The aim is to enhance the HETEAC aerosol classification model to include stratospheric aerosol features.
Extended the HETEAC model to include stratospheric targets.
Defined a set of basic feature types for scattering calculations.
Selected microphysical representations based on agreement with ground-based lidar observations.
Ensured consistency with the CALIPSO approach for satellite record harmonization.
HETEAC model 2.0 includes sulfate, volcanic ash, and smoke particles.
Extended model successfully accounts for polar stratospheric clouds (PSCs).
Model aligns well with optical properties from ground-based observations.

Abstract

The extension of the Hybrid End-To-End Aerosol Classification (HETEAC) model with respect to stratospheric targets is presented. The methodology follows the HETEAC approach, i.e., a suitable set of basic feature types is defined to allow for scattering calculations. The most appropriate microphysical representation is selected based on the agreement between optical properties derived from scattering calculations and ground-based lidar observations. The extended HETEAC model (2.0), considers stratospheric features such as sulfate, volcanic ash, and smoke particles and also polar stratospheric clouds (PSCs). HETEAC 2.0 ensures consistency with the CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) approach, which is of great importance for the harmonization of long-term satellite records.

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