The TROPOMI Aerosol Layer Height (ALH) product focuses on retrieval of vertically localized aerosol layers in the free troposphere, such as desert dust, biomass burning aerosol, or volcanic ash plumes in layers for cloud-free scenes. Applications include radiative forcing studies, long-range transport modeling and studies of cloud formation processes, and are of use for aviation safety. Retrieval of aerosol height is based on absorption in the O2 A band in the near-infrared wavelength range (759 and 770 nm). The figure below is from the KNMI UV Lidar at Cabauw, NL that captured a volcanic aerosol plume on 18 April 2010. It is anticipated the TROPOMI ALH data product will retrieve mid-pressure layer heights for this type of plumes.
|Version number||Version Effective Date||Summary of Changes|
|1.0.0||6 months post-launch to next update||Post-Phase E1 updates|
|0.11.8||21-Dec-2017 to present||Minor fixes and updates|
|0.11.4||launch to 20-Dec-2017||First product release|
USER DOCUMENTATION: ATBD, PUM, README, & SAMPLE DATA
The Algorithm Theoretical Basis Document (ATBD) can be found by clicking here and the Product User Manual (PUM) link is located on the right under Documentation. Sample data can be downloaded at the bottom of this page.
After launch, preliminary product results will be provided during the Commissioning Phase E1 and the Operational Phase. Product README (PRF) files will be created during Phase E1 in preparation for the Operational Phase.