I am an instrumental (metrological) scientist, and my research focus is mainly on the processes driving stratospheric water vapor modulation. In the upper troposphere and lower stratosphere (UTLS), water vapor is of particular importance because of its impact on the ozone stratospheric layer through chemical and radiative processes and its impact on the global radiative equilibrium, through the stratospheric water vapor feedback. However, measuring stratospheric water vapor remains to date, a technical challenge. In this frame, I coordinated several initiatives with the aim of evaluating and validating atmospheric hygrometers within the community, and potentially in sight of TransNational Access (TNA) flights within a future European infrastructure (E.g. AQUAVIT-4, AsA 2022, AsA 2024). Such instruments could be, in the near future, accessible to the community.

My research activity relies largely on balloon-borne observations using the Pico-SDLA instruments, that I will describe, and complementary observations from various airborne and satellite instruments, as well as model outputs. Such activity concerns the transport, dynamical and microphysical processes in the TTL and their interplays (DEEP CONVECT proposal), preparation and Cal/Val activities (E.g. future ESA FORUM mission, validation EarthCare…) (ATMOSFER project), and subsequent evaluation of Climate Data Records and models (E.g. Integrated Forecast systems, CCI WV-strato, CDR-3 of ESA).

To fill the gap of upper air in situ measurements, I coordinated the European FERGUSSON proposal aiming to propose cutting-edge technologies for the in-situ observation of the stratosphere and the UTLS in complement of current European research infrastructures capabilities. Taking a step forward, I am currently coordinating the creation of a European airborne research infrastructure (AIRLIFTS project) to create a coordinated framework for sustainable access to complementary airborne platforms for science. I will soon undertake the responsibility of the French counterpart of AIRLIFTS, IN-AIR.

In my presentation, I will then give an overview of my current research activities and research perspectives in the frame of my integration in LATMOS.

Mélanie Ghysel-Dubois est chercheuse en instrumentation au CNRS, et ses travaux portent principalement sur les processus entrainant la modulation de la vapeur d’eau stratosphérique.

Lieu
LATMOS (Jussieu)
Grande Salle)

Visio
https://uvsq-fr.zoom.us/j/91924227118?pwd=mY2yWFW7WEzGaJ0wIo0pDibIwXMpZH.1
ID de réunion: 919 2422 7118
Code secret: 860573