A5081790661- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Urban Heat Island Mitigation
- Meteorological Phenomena and Simulations
- Atmospheric aerosols and clouds
Université Libre de Bruxelles
2023-2024
Abstract. Satellite measurements play an increasingly important role in the study of atmospheric ammonia (NH3). Here, we present version 4 Artificial Neural Network for IASI (ANNI; IASI: Infrared Atmospheric Sounding Interferometer) retrieval NH3. The main change is introduction total column averaging kernels (AVKs), which can be used to undo effect vertical profile shape assumption retrieval. While equations matched term with analogous ones UV/Vis retrievals other minor absorbers, derive...
High-spectral resolution infrared sounders on board satellites can measure atmospheric trace gases confined to the planetary boundary layer (PBL). However, their sensitivity PBL depends temperature difference between surface and atmosphere, so-called thermal contrast (TC). After reviewing physical aspects of TC how it drives measurement sensitivity, we characterize global temporal behavior in clear-sky conditions. Combining land temperatures from Copernicus Global Land Services dataset with...
Abstract. Satellite measurements play an increasingly important role in the study of atmospheric ammonia (NH3). Here, we present version 4 Artificial Neural Network for IASI (ANNI) retrieval NH3. The main change is introduction total column averaging kernels (AVKs), which can be used to undo effect vertical profile shape assumption retrieval. While equations matched term with analogous ones UV/Vis retrievals other minor absorbers, derive formalism from ground up, as its applicability thermal...
Short-lived atmospheric pollutants mainly reside in the planetary boundary layer (PBL). In recent years, sensitivity of high-resolution infrared sounders to PBL has been amply demonstrated, most notably through observations local emission sources sulphur dioxide (SO2), carbon monoxide (CO) and ammonia (NH3). However, varies strongly as a function thermal contrast (TC), temperature difference between Earth’s skin atmosphere. Enhanced contrast, typically seen during daytime when...