Mesure du protoxyde d'azote (N2O) depuis l'espace

Abstract : This thesis focuses on the measurement of nitrous oxide (N2O) from space sensors. Firstly, we studied the transport and emission processes of N2O from Asia to the Mediterranean Basin (MB). For this study, we used N2O profiles over the period 2010-2013 retrieved from TANSO-FTS (Thermal And Near infrared Sensor for carbon Observation Fourier Transform Spectrometer) observations onboard the platform GOSAT (Greenhouses gases Observing SATellite) . We also used outputs of the chemistry-transport model LMDz-Or-INCA over the same period. Secondly, we built an algorithm to retrieve N2O profiles using observations from IASI (Infrared Atmospheric Sounding Interferometer) onboard the MetOp platforms. This algorithm was validated by comparing the retrieved profiles with in-situ measurements from HIPPO (High performance Instrumented airborne platform for environmental research Pole-to-Pole Observations) airborne campaigns. Finally, we performed a theoretical intercomparison between IASI-NG (IASI-New Generation) and IASI concerning the tropospheric N2O measurements.
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Kouadio Guy Yannick Kangah. Mesure du protoxyde d'azote (N2O) depuis l'espace. Océan, Atmosphère. Université Paul Sabatier - Toulouse III, 2017. Français. ⟨NNT : 2017TOU30323⟩. ⟨tel-01990627⟩



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