Per la serie di seminari in meteorologia ambientale dell’Università di Trento, venerdì 15 dicembre alle ore 11:30, Daniel Cziczo, direttore del Department of Earth, Atmospheric, and Planetary Sciences della Purdue University terrà un seminario dal titolo: New insights on upper tropospheric and stratospheric aerosols from single particle measurements. Il seminario si terrà in presenza nell’aula 1P (primo piano) al DICAM – Università di Trento, in via Masiano 77, e sarà possibile seguirlo in streaming su Zoom al seguente link: https://unitn.zoom.us/j/85650715877(Meeting ID: 856 5071 5877, Passcode: 985207) Si riporta l’abstract del seminario e la biografia del prof. Cziczo. Abstract The composition of particles found in the upper tropospheric / lower stratospheric (UTLS) has now been studied in situ and in real time for a quarter century. First deployed in 1998, the Particle Analysis by Laser Mass Spectrometry (PALMS) instrument showed the complex internal and external mixing state of aerosols in this region of the atmosphere. Developed in 2020, the updated PALMS-Next Generation (-NG) instrument was deployed in 2021 and 2022 on the NASA ER-2 aircraft for the Dynamics and Chemistry of the Summer Stratosphere (DCOTSS) study. DCOTSS specifically targeted summer convection and stratospheric overshooting over continental North America while also allowing a general survey of this region of the atmosphere. The expanded capabilities of PALMS-NG allowed us to better understand the sources and mixing state of UTLS particles with an emphasis on the understudied regions impacted by deep convection. Among our findings are the transport of particles across the tropopause and their interaction with material already in the lower stratosphere. Bio Daniel Cziczo is professor and head of the Department of Earth, Atmospheric, and Planetary Sciences at Purdue University. He is a leading expert on the relationship between different types of atmospheric particles and the clouds they form –and the subsequent impact on climate. He has received numerous awards, and was named a 2023 Karlsruhe Institute of Technology (KIT) International Excellence Fellow. His research utilizes laboratory and field studies to determine how atmospheric particles interact with water vapor droplets and ice crystals which are important players in the Earth’s climate system. His extensive field work includes working with NASA’s Dynamic and Chemistry of the Summer Stratosphere (DCOTSS), and atmospheric research with the National Oceanic and Atmospheric Administration (NOAA).
