The session focuses on the latest developments in spectroscopic and optical instrumentation and technologies from the UV to THz spectral regions and their use in atmospheric applications. These applications include observation of spatial and temporal changes in the concentrations and optical properties of atmospheric constituents, as well as the study of atmospheric processes in laboratories, atmospheric simulation chambers, and field deployments.

As the scattering and absorption of radiation by atmospheric particles are central to Earth’s radiation balance, this session facilitates an exchange of insights between the measurement and modeling communities. Accurately quantifying these radiative effects remains a challenge. Specifically, uncertainties in morphology and the computational cost of modeling complex particles necessitate novel and efficient approaches.

The session aims to be a forum for sharing information on the state-of-the-art and emerging developments in atmospheric sensing measurements and modeling. We welcome contributions from atmospheric scientists, engineers, and industry. Topics include developments and applications of novel spectroscopic methods (such as frequency comb, cavity-enhanced, and photoacoustic spectroscopies) dedicated to measuring aerosols, isotopologues, and trace gases, as well as advances in the measurement and modeling of atmospheric particle optics. Approaches using ground and airborne platforms, simulation chambers, and new data analysis tools (including deep learning) are also encouraged.