Amal Farji

Background

• Bachelor in Enviromental Physics-Chemistry, ISSTE (Tunis) (2012-2015)
• Master in Physics, ENSIT (University of Tunis) (2015-2017)
• Master thesis "Determination of the transition dipole moments of the ammonia 2v4 band" (2017)
• PhD in Sciences, in the frame of a cotutelle between ULB and the University of Tunis (2017-present)

PhD project

High resolution methane spectrometry for the atmosphere of the Earth

Methane (CH4) is the most abundant anthropogenic greenhouse gas after CO2 in the atmosphere of the Earth. To properly assess its impact on the climate and to measure its concentration in the atmosphere using remote sensing techniques, detailed knowledge of the infrared absorption spectrum of methane is crucial. This spectrum is complex. Despite numerous laboratory studies devoted to them, the spectroscopic parameters characterizing the effects of pressure on the profile of methane lines can still be improved. Our project aims to contribute to the improvement of this important information. It focuses on the measurement of air broadening, shift and line mixing coefficients for methane lines observed in the infrared range, starting with the pentad region between 2500 and 3300 cm-1, using Fourier transform spectroscopy and multi-spectrum fitting techniques. The temperature dependence of these parameters will also be measured.