The team

Pascal Prunet

Pascal holds a Master’s Degree in Physics and External Geophysics and a Ph.D. in Geophysical Sciences with a thesis focused on oceanic carbon cycle. During his postDoc he specialised in atmosphere sounding from space for chemistry and climate. Atmospheric radiative transfer modelling and spectroscopy are two of Pascal’s domains of expertise. Beside being Spascia’s CEO, Pascal delivers on several projects including the preparation of the future MicroCarb mission with CNES, the evaluation of the added-value and limitations of present and future satellite instruments (IASI, IASI-NG, IRS) for air quality monitoring.

Anne Boynard

Anne holds a M.Sc. in Ocean, Atmosphere, Climate and Remote Sensing (2006) and a PhD in Environment Sciences (2009). She performed a post-doc at NCAR (Boulder, USA) for 3 years, which was focused on the study of air quality using both satellite data and modeling. She is passionate about satellite observation analysis and interpretation for the monitoring of the atmospheric composition and its evolution, under the influence of human activities. She has contributed to assess the benefits and limitations of current and future satellite instruments (IASI, IASI-NG) for air quality monitoring. Her current research focuses on the validation and improvement of the IASI ozone retrievals. She also contributes to provide scientists with easy, free and open access to IASI atmospheric composition data along with quicklooks via the IASI/AERIS website ( 

Yannick Kangah

Yannick studied Meteorology and Atmospheric Sciences in Casablanca (Morocco) and Toulouse (France). Convinced of the growing importance of spaceborne measurements for on the one hand improving meteorological forecast and on the other hand monitoring pollution, he completed his training with a Ph.D. in that field in 2017. At the moment, Yannick collaborates with the French Space Agency (CNES) on monitoring and improving the performances of IASI, one of the reference spaceborne instruments in atmospheric sciences. 

Andrzej Klonecki

Andrzej holds a bachelor degree in chemistry and a Ph.D. in Atmospheric and Oceanic Sciences. His thesis and post-doctoral work focused on modelling tropospheric chemistry with global chemistry transport models. Since, he continued using chemistry transport models at various spatial scales, going from regional to local, in the framework of studies preparing and specifying future Earth observation missions. Andrzej’s interest is the development of methods that rely on space-based observations to provide information on anthropogenic emissions, such as CO2 emissions from power plants.  He also works on the development of new methodologies for the retrieval of geophysical products from space measured radiances and on using historical satellite observations (pre-1979) to provide additional valuable information to constrain past climate.  

Olivier Lezeaux

Olivier holds a M.Sc. in Physics (1994) and a Ph.D. in GeoPhysic Sciences (1999). Olivier is specialised in atmospheric remote sounding from space for the purpose of monitoring Earth’s atmosphere, e.g. climate change, air quality, meteorology. His expertise include infrared spectroscopy, atmospheric radiative transfer, atmospheric modelling, inverse techniques, and classification methods. Olivier’s current work is twofold. On the one hand he exploits S5P’s data in order to characterise emission sources. On the other hand he collaborates at the preparation of spatial missions (MicroCarb, GeoCarb) in order to estimate Human emissions of green-house gases (carbon dioxide, methane) and pollutants (nitrogen dioxide, carbon monoxide, ozone).

Nicolas Nesme

Nicolas holds 2 M.Sc. in Astrophysics, and is currently completing his Ph.D. thesis under the joint supervision of Spascia and ONERA. Nicolas’s research consists in improving methane emissions detection by leveraging airborne and satellite images produced by methane sensitive instruments. Nicolas is passionate about his work because methane is a green house gas that is a recognised threat for life on Earth; in other words, improving methane detection will save human lives. Nicolas enjoys working at Spascia because of the wealth of knowledge available in the group. What does Nicolas dream to do after his thesis? As most of Earth atmosphere observation satellites provide a daily coverage of the Earth, Nicolas’ goal is to keep improving the detection of the ever growing number of methane emission sources, on the basis of daily satellite observations, with innovative and robust methods that people will trust. 

Sarah Pipien

Sarah holds a M.Sc. in Cosmos, fields and particles and a Ph.D. in Astrophysics and Cosmology. During her Ph.D. and postDoc, she specialised in image processing through the analysis of large astronomical data sets. Believing in the importance of environmental monitoring, Sarah shifted her focus from space observations from Earth, to Earth observations from space. In this new domain, she gathered first hand experience on instruments as an electrical engineer on the assembly, integration and testing of optical instruments onboard satellites dedicated to Earth observations (Thales Alenia Space). At Spascia, she is currently working with CNES on developing a processing scheme for identifying extreme atmospheric events that can be detected with IASI data, such as volcanic eruptions, wildfires or high pollution episodes.

Adrien Vu Van

Adrien holds a Master in Climate and environnement (2018). He is currently completing his Ph.D. thesis in Climate and Atmospheric Composition under the joint supervision of Spascia and LATMOS. Adrien aims at making satellite data easier to understand and useful to the general public. His current research work aims at automatically and precisely detect and characterise extreme events that impact Earth’s atmosphere. For that purpose Adrien articulates spectroscopy and statistical analysis into an innovative method.

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