ALG Product Description

Atmospheric look-up tables made easy

Atmospheric Radiative Transfer models (RTMs) have become important tools for the analysis and processing of optical Earth observation data, providing meaningful links between radiometry and atmospheric composition for applications, such as aerosol radiative forcing, air quality, and atmospheric correction. However, the complexity of these RTMs limit their use and applicability for the broader scientific community.

The Atmospheric Look-up table Generator (ALG) toolbox is a standalone software package that can be use independently of ARTMO. ALG allows generating and analyzing look-up tables (LUT) based on a suite of atmospheric RTMs, facilitating consistent and intuitive user interaction, thereby streamlining model setup, running and storing RTM data for any spectral configuration in the optical domain.

Key Features

    • Configure and run atmospheric RTMs in an intuitive way through a single graphical user interface with input options to insert single values or value ranges. This includes the definition of multiple combinations of key input atmospheric (e.g., aerosol-related, gas concentration profiles, clouds) and geometric (e.g., sensor height, surface height, illumination/viewing angles) variables.
    • Couple atmospheric RTMs with the OPAC aerosol database.
    • Set the spectral range and resolution of the output RTM data at non-contiguous spectral intervals.
    • Run efficiently parallel executions of multiple instances of an atmospheric RTM as a third-party software.
    • Process and store a massive quantity of spectral output data based on a LUT approach in a relational database.

Applications

    The broader scientific community can subsequently use ALG for a wide variety of applications such as: