Claire Delon

Researcher

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Tel :0561332744

Bureau :A034, OMP Belin

Status :permanent

Adresse professionnelle :

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CV / functions

Current position:

– Researcher at Laboratoire d’Aerologie since 2002.

– LEETCHIE Team Leader : The Exchanges and Transformations of Chemical Species and Energy

– H2020 INSA project coordinator

Education and background

Habilitation à Diriger les Recherches (HDR) – July 2014 – Université Paul Sabatier, TOULOUSE
PhD in physical-chemistry of the atmosphere, EXPRESSO program at Laboratoire d’Aérologie. June 1999
DEA Ocean Atmosphere Biosphere, 1996.
M2 Physics, Environment and remote sensing, 995.
M1 Physics, 1994.
DEUG A option Physique-Chimie, 1993.

PhD Students

– Fredi Agbohessou 2021-2024 : co encadrée avec Olivier Roupsard (CIRAD). Sujet : « Modélisation du bilan de gaz à effet de serre par les paysages sahéliens (bétail et arbres inclus) : de la parcelle au paysage ».

– Adama Bakayoko 2018-2021 : thèse co-encadrée avec Corinne Galy-Lacaux (LA) et Véronique Yoboué (UFHB, Abidjan, Côte d’Ivoire). Sujet : « Etude des interactions surface-atmosphère des composés azotés : cas des écosystèmes africains ».

– Laurent Bigaignon 2017-2020 : thèse co-encadrée avec Tiphaine Tallec (Cesbio). Sujet : « Etude de l’impact de la variabilité climatique et de la pression anthropique liée à l’agriculture sur les émissions de N₂O »

– Romain Baghi 2009-2013: Thèse co-encadrée avec Pierre Durand et Corinne Jambert. Sujet: « Émissions biogéniques de composés organiques volatils en région méditerranéenne : développement instrumental, mesures et modélisation ». Romain est actuellement en CDI à Toulouse.

– Marcellin Adon 2006-2009 : officiellement je n’ai pas fait partie des encadrants de Marcellin. En revanche, j’ai beaucoup travaillé avec lui pendant cette période, et j’ai participé à la relecture de son manuscrit. Marcellin est actuellement en CDD au Latmos.

– Richard Dupont 2005-2008. Thèse co-encadrée avec Dominique Serça. Sujet : « Emissions biogéniques de NO par les sols. Impact sur la chimie atmosphérique ». Richard est actuellement en CDI à l’IRSN de Dunkerque.

Post-Doctorat

Federica Pacifico (septembre 2016 – Décembre 2017). Programme DACCIWA. Rôle des émissions biogéniques sur la chimie de l’atmosphère en Afrique de l’Ouest.
Richard Dupont, (janvier-juillet 2008), en collaboration avec INRA-Grignon et Airparif. Impact de l’organisation de l’espace en zone périurbaine sur la pollution atmosphérique, modélisation des concentrations d’ozone et d’oxydes d’azote, et des dépôts.

Master students

Communication

– Conférence Quai des Savoirs (Toulouse) : « Nitrogen in Africa: too much or too litte ? », June 2019.

– Interview Radio Campus « L’azote en Afrique : trop ou trop peu ? », mai 2019.

– Intervention classe de 5eme collège de Labarthe/Lèze (31) : « le métier de chercheur », mai 2016

– Intervention classe de 5eme collège de Muret (31) : « le métier de chercheur », mai 2013

– Animation sur la Mousson Africaine dans le cadre de la Fête de la Science, UPS, Toulouse. Juin 2010.

– Organisation du pôle conférence du festival Afriqu’à Muret (Muret 31), sur le thème de la Mousson Africaine, juin 2010.

– Animation sur la Mousson Africaine dans le cadre du Festival « La Novela » Toulouse. Novembre 2009.

– Intervention classe de CM2 (Toulouse) : « Les gaz à effet de serre », juin 2007

Research

Research topics:

Exchanges of nitrogen compounds between the surface and the atmosphere, in African tropical areas.

Key subjects:

African ecosystems
Sudy of processes in the soil and budgets at the surface atmosphere interface
Skills:
- Modeling: development of parameterizations, adaptation of parameterizations in tropical systems
- Measurements: Field campaign organization in remote areas, definition of experimetal strategies
Interface between biogeochemistry and physical-chemistry of the atmosphere

Responsibilities

– Member of Comité de Spécialistes Océan Atmosphère (CSOA)

– Coordinator of H2020-MSCA-RISE GA871944 Integrated Nitrogen Studies in Africa 2020-2024 program.

Multidisciplinary study of nitrogen in Africa: Exchanges of nitrogen compounds between the different terrestrial compartments (biosphere, atmosphere, continental hydrosphere ).
Financial budget 1.242 M€, 270 PM, 16 institutions et 125 persons involved

– Task leader 2.1.2 « Greenhouse gas fluxes modeling at the regional scale » in program EU-Desira CASSECS 2020-2024: Carbon Sequestration and greenhouse gas emissions in (agro) Sylvopastoral Ecosystems in the sahelian CILSS States

– Coordinator «Cycle de l’azote au Sahel» project INSU LEFE-CHAT 2013-2014.

– Coordinator « Cycle de l’Azote entre la Surface et l’Atmosphère en afriQUE (CASAQUE) » project LEFE-EC2CO 2017-2018.

Participation in programs :

– Service National d’Observation (SNO) International Network to study Deposition and Atmospheric composition in Africa (INDAAF) in Infrastructure de Recherche INSU-ACTRIS-Fr. Contribution to the implementation and scientific analysis of results.

– International Nitrogen Management System (INMS) from the International Nitrogen Initiative (INI), which gather international actors involved in nitrogen management, for a research, society, ecomomy and politics point of view. Focused on the African contribution.

Publications

Bakayoko A., C. Galy-Lacaux, V. Yoboué, J. Hickman, F. Roux, E. Gardrat, F. Julien, and C. Delon, Dominant contribution of nitrogen compounds in precipitation chemistry in the Lake Victoriacatchment (East Africa). Environmental Research Letters, IOP Publishing, In press, 2021, 10.1088/1748-9326/abe25c.

Ossohou M., C. Galy-Lacaux, V. Yoboué, M. Adon, C. Delon, E. Gardrat, I. Konaté, A. Ki, R. Zouzou†, Long-term atmospheric inorganic nitrogen deposition in West African savanna over 16-year period (Lamto, Côte d’Ivoire), Environ. Res. Lett. 16 015004, 2021; https://doi.org/10.1088/1748-9326/abd065

Laouali D., C. Delon, M. Adon, O. Ndiaye, I. Saneh, E. Gardrat, M. Dias-Alves, T. Tagesson, R. Fensohlt and C. Galy-Lacaux, Source contributions in precipitation chemistry and analysis of atmospheric nitrogen deposition in a Sahelian dry savanna site in West Africa, Atmospheric Research 251, 105423, 2020. https://doi.org/10.1016/j.atmosres.2020.

Bigaignon L., C. Delon, O. Ndiaye, C. Galy-Lacaux, D. Serça, F. Guérin, T. Tallec, L. Merbold, T. Tagesson, R. Fensholt, S. André and S. Galliau, Understanding N2 O Emissions in African Ecosystems: Assessments from a Semi-Arid Savanna Grassland in Senegal and Sub-Tropical Agricultural Fields in Kenya, Sustainability, 12, 8875; doi:10.3390/su12218875, 2020.

Bigaignon L., R. Fieuzal, C. Delon, T. Tallec, Combination of two methodologies, artificial neural network and linear interpolation, to gap-fill daily nitrous oxide flux measurements, Agricultural and Forest Meteorology, 29, 1108037, https://doi.org/10.1016/j.agrformet.2020.108037, 2020.

Delon, C., Galy-Lacaux, C., Serça, D., Personne, E., Mougin, E., Adon, M., Le Dantec, V., Loubet, B., Fensholt, R., and Tagesson, T.: Modelling land atmosphere daily exchanges of NO, NH3, and CO2 in a semi-arid grazed ecosystem in Senegal, Biogeosciences, 16, 2049–2077, https://doi.org/10.5194/bg-16-2049-2019, 2019.

Pacifico F., C. Delon, C. Jambert, P. Durand, E. Morris, M. J. Evans, F. Lohou, S. Derrien, V. H. E. Donnou, A. V. Houeto, I. Reinares Martinez, and P.-E. Brilouet, Measurements of nitric oxide and ammonia soil fluxes from a wet savanna ecosystem site in West Africa during the DACCIWA field campaign, Atmos. Chem. Phys., 19, 2299-2325, https://doi.org/10.5194/acp-19-2299-2019, 2019.

Diawara M.O., P. Hiernaux , E. Mougin , M. Grippa , C. Delon et H.S. Diakité, Effets de la pâture sur la dynamique de la végétation herbacée au Sahel (Gourma, Mali) : une approche par modélisation, Cah. Agric., 27, 15010, https://doi.org/10.1051/cagri/2018002, 2018.

Freney E., K. Sellegri, M. Chrit, K. Adachi, J. Brito, A. Waked, A. Borbon, A. Colomb, R. Dupuy, J-M Pichon, L. Bouvier, C. Delon, C. Jambert, P. Durand, T. Bourianne, C. Gaimoz, S. Triquet, A Féron, M. Beekmann, F. Dulac, and K. Sartelet, Aerosol composition and the contribution of SOA formation over Mediterranean forests, Atmos. Chem. Phys.,18(10): 7041-7056. Doi:10.5194/acp-18-7041-2018, 2018.

Delon, C. Galy-Lacaux, D. Serça, B. Loubet, N. Camara, E. Gardrat, , I. Saneh, R. Fensholt, T. Tagesson, V. Le Dantec, B. Sambou, C. Diop, E. Mougin, Soil and vegetation-atmosphere exchange of NO, NH₃, and N₂O from field measurements in a semi arid grazed ecosystem in Senegal, Atmospheric Environment 156, 36-51., 2017.

Yannick Kangah, Philippe Ricaud, Jean-Luc Attié, Naoko Saitoh, Didier A. Hauglustaine, Laaziz El Amraoui, Régina Zbinden, Claire Delon, Summertime mid-to-upper tropospheric nitrous oxide over the Mediterranean as a footprint of Indian subcontinent emissions, . Geophys. Res. Atmos., 122, 4746–4759, doi:10.1002/2016JD026119., 2017.

Torbern Tagesson, Rasmus Fensholt, Idrissa Guiro, Ford Cropley, Cheikh Mbow, Stephanie Horion, Andrea Ehammer, Eric Mougin, Claire Delon, Corinne Galy-Lacaux, Jonas Ardö, Very high carbon exchange fluxes for a grazed semi-arid savanna ecosystem in West Africa, Geografisk Tidsskrift-Danish Journal of Geography, http://dx.doi.org/10.1080/00167223.2016.1178072, 2016.

Pierre C., L. Kergoat, G. Bergametti, E. Mougin, C. Baron; A. Abdourhamane Toure, J.-L. Rajot; P. Hiermaux, B. Marticorena, C. Delon, Modeling vegetation and wind erosion from a millet field and from a rangeland: two sahelian case studies, Aeolian Research 19, 97–111, 2015.

Delon C., E. Mougin , D. Serca , M. Grippa , P. Hiernaux , M. Diawara , C. Galy-Lacaux , and and L. Kergoat, Modelling the effect of soil moisture and organic matter degradation on biogenic NO emissions from soils in Sahel rangeland (Mali), Biogeosciences, 12, 3253–3272, 2015.

Akpo Aristide, C. Galy-Lacaux, D. Laouali, C. Delon, C. Liousse, M. Adon, E. Gardrat, A. Mariscal, C. Darakpa, Precipitation chemistry and wet deposition in a remote wet savanna site in West Africa: Djougou (Benin), Atmospheric Environment 115, 110-123, 2015.

Galy-Lacaux C. and C. Delon, Nitrogen Emission and Deposition Budget in West and Central Africa. Special issue of Environmental Research Letters (erl.iop.org) entitled: “Focus on Nitrogen Management Challenges: From Global to Local Scales” INI 6th international conference paper, Environ. Res. Lett. 9, 125002, doi:10.1088/1748-9326/9/12/125002, 2014.

Deshmukh C., D. Serça, C. Delon, R Tardif, M. Demarty, C. Jarnot, Y. Meyerfeld, V. Chanudet, P. Guédant, W. Rode, S. Descloux, and F. Guérin, Physical controls on CH₄ emissions from a newly flooded subtropical freshwater hydroelectric reservoir: Nam Theun 2, Biogeosciences., 11, 4251-4269, 2014.

Oswald R., T. Behrendt, M. Ermel, D. Wu1, H. Su, Y. Cheng, C. Breuninger, A. Moravek, E. Mougin, C. Delon, B. Loubet, A. Pommerening-Röser, M. Sörgel, U. Pöschl, T. Hoffmann, M.O. Andreae, F.X. Meixner and I. Trebs, HONO emissions from soil bacteria as a major source of atmospheric reactive nitrogen, Science, 341, 1233 (2013); DOI: 10.1126/science.1242266, 2013.

Adon M., C. Galy-Lacaux, C. Delon, V. Yoboué, F. Solmon, A. T. Kaptue Tchuente. Dry deposition of nitrogen compounds (NO₂, HNO₃, NH₃), sulfur dioxide and ozone in West and Central African ecosystems using the inferential method. Atmos. Chem. Phys. 13, 11351–11374, 2013.

Baghi R., Durand, P., Jambert, C., Jarnot, C., Delon, C., Serça, D., Striebig, N., Ferlicoq, M., and Keravec, P.: A new disjunct eddy-covariance system for BVOC flux measurements – validation on CO₂ and H₂O fluxes, Atmos. Meas. Tech., 5, 3119–3132, 2012.

Laouali, C. Galy-Lacaux, B. Diop, C.Delon, D. Orange, J.P. Lacaux, A. Akpo , F. Lavenu, P. Hiernaux, E. Gardrat and P. Castera, Long term monitoring of precipitation chemical composition and wet deposition over three Sahelian savannas, Atmos. Environ, 50, 314-327, DOI: 10.1016/j.atmosenv.2011.12.004, 2012.

Delon, C., Galy-Lacaux, C., Adon, M., Liousse, C., Serça, D., Diop, B., and Akpo, A.: Nitrogen compounds emission and deposition in West African ecosystems: comparison between wet and dry savanna, Biogeosciences, 9, 385-402, DOI: 10.5194/bg-9-385-2012, 2012.

Mari, C. E. Reeves, K. S. Law, G. Ancellet, L. AndresHernandez, B. Barret, J. Bechara, A. Borbon, I. Bouarar, F. Cairo, R. Commane, C. Delon, M. J. Evans, F. Fierli, C. Floquet, C. GalyLacaux, D. E. Heard, C. D. Homan, T. Ingham, N. Larsen, A. C. Lewis, C. Liousse, J. G. Murphy, E. Orlandi, D.E. Oram, M. Saunois, D. Serça, D.J. Stewart, D. Stone, V. Thouret, P. van Velthoven, J. E. Williams, Atmospheric composition of West Africa: highlights from the AMMA program, Atmospheric Science Letters, doi :10.1002/asl.289, 2010.

Minga A., V. Thouret, M. Saunois, C. Delon, D. Serça, C. Mari, B. Sauvage, A. Mariscal, M. Leriche, B. Cros, What caused extreme ozone concentrations in Cotonou in December 2005 ?, Atmos. Chem. Phys., 10, 895-907, 2010.

Delon, C. Galy-Lacaux, A. Boone, C. Liousse, D. Serça, M. Adon, B. Diop, A. Akpo, F. Lavenu, E. Mougin, F. Timouk, Atmospheric Nitrogen budget in Sahelian dry savannas, Atmos. Chem. Phys., 10, 2691-2708, 2010.

Adon M., C. Galy-Lacaux, C. Delon, V. Yoboué, C. Liousse , J.P Lacaux, K. Pienaar, H. Al Ourabi, L. Dungall, B. Diop, L. Sigha, F. Lavenu, E. Mougin, Long-term measurements of sulphur dioxide, nitrogen dioxide, ammonia, nitric acid and ozone in Africa using passive samplers, Atmos. Chem. Phys., 10, 7467-7487, 2010.

Mougin E., P. Hiernaux, L. Kergoat, M. Grippa, P. De Rosnay, F. Timouk, V. Le Dantec, V. Demarez, M. Arjounin, F. Lavenu, N. Soumaguel, E. Ceschia, B. Mougenot; F. Baup, F. Frappart, P.L. Frison, J. Gardelle, C. Gruhier, L. Jarlan, S. Mangiarotti, B. Sanou, Y. Tracol, F. Guichard, V. Trichon, L. Diarra, A. Soumaré, M. Koité, F. Dembélé, C. Lloyd, N. P. Hanan, C. Damesin, C. Delon, D. Serça, C. Galy-Lacaux, J. Seghiéri, S. Becerra, H. Dia, F. Gangneron, P. Mazzega, The AMMA-CATCH Gourma observatory site in Mali: Relating climatic variations to changes in vegetation, surface hydrology, fluxes and natural resources, J. of Hydrology, AMMA-CATCH Special issue, doi :10.1016/j.jhydrol.2009.06.045, 2009.

Delon C., C. E. Reeves, D. J. Stewart, D. Sera, R. Dupont, C. Mari, J.-P. Chaboureau, and P. Tulet, Biogenic nitrogen oxide emissions from soils : impact on NOx and ozone over West Africa during AMMA (African Monsoon Multidisciplinary Experiment): modelling study, Atmos. Chem. Phys., 8, 2351-2363, 2008.

Dupont R., . K. Butterbach-Bahl, C. Delon, N. Bruggemann, D. Serça, Neural network treatment of 4 years long NO measurement in temperate rain forest, Geophys. Res., 113, G04001, doi:10.1029/2007JG000665, 2008.

Delon C., D. Serça, C. Boissard, R. Dupont, A. Dutot, P. Laville, P. De Rosnay, R. Delmas., Soil NO emissions modelling using Artificial Neural Network, Tellus B, 59B, 502-513, 2007.

Guérin F., G. Abril, D. Serça, C. Delon, S. Richard, R. Delmas, A. Tremblay, L. Varfaly, Gas transfer velocities of CO₂ and CH₄ in a Tropical Reservoir and its River Downstream, Journal of Marine Systems 66, 161-172, 2007.

De Coëtlogon G., C. Frankignoul, M. Bentsen, C. Delon, H. Haak, S. Masina and A. Paerdens, Gulf stream variability in five Oceanic General Circulation Models, Journal of Physical Oceanography, 2119-2135, 2006.

Cros, B., C. Delon, C. Affre, Th. Marion, A. Druilhet, P. Perros and A. Lopez, Sources and sinks of ozone in savanna and forest areas during EXPRESSO : Airborne turbulent flux measurements., J. Geophys. Res., 105, 29347-29358, 2000.

Delon C., A. Druilhet, R. Delmas, P. Durand, Dynamic and thermodynamic structure of the lower troposphere above rain forest and wet savanna during the EXPRESSO campaign., J. Geophys.Res. 105 14,823-14,840, 2000.

Delon C., A. Druilhet, R. Delmas, J.P. Greenberg, Aircraft assessment of trace compounds fluxes in the atmosphere with Relaxed Eddy Accumulation. Sensitivity to the conditions of selection., J. Geophys.Res., 105, 20,461-20,472, 2000.

Greenberg, J. P. ; A.B. Guenther, S. Madronich, W. Baugh, P. Ginoux, A. Druilhet; R. Delmas, and C. Delon,, Biogenic volatile organic compound emissions in central Africa during the Experiment for the Regional Sources and Sinks of Oxidants (EXPRESSO) biomass burning season., J. Geophys. Res. Vol. 104 , No. D23 , p. 30659-30672, 1999.

Cautenet S., D. Poulet, C. Delon, R. Delmas, J.M. Grégoire, J.M. Pereira, S. Cherchali, O. Amram, G. Flouzat, Simulation of pollutant redistribution over central Africa during biomass burning events (EXPRESSO experiment)., J. Geophys.Res., 104 (D23), 30641-30658,1999

Delmas R., A. Druilhet, B. Cros, P. Durand, C. Delon, J.P. Lacaux, J.M. Brustet, D. Serça, C. Affre, A. Guenther, J. Greenberg, W. Baugh, P. Harley, L. Klinger, P. Ginoux, G. Brasseur, P.R. Zimmerman, J.M. Grégoire, E. Janodet, A. Tournier, P. Perros, Th. Marion, A. Gaudichet, H. Cachier, S. Ruellan, P. Masclet, S. Cautenet, D. Poulet, C. Bouka Biona, D. Nganga, J.P. Tathy, A. Minga, J. Loemba-Ndembi, P. Ceccato, Experiment for Regional Sources and Sinks of Oxidants (EXPRESSO) : An overview., J. Geophys.Res., 104 (D23), 30609-30624,1999.

Projects

H2020-MSCA-RISE Integrated Nitrogen Studies in Africa: https://h2020-insa.aeris-data.fr/ (@AfricaNitrogen)

CASSECS: Carbon Sequestration and greenhouse gas emissions in (agro) Sylvopastoral Ecosystems in the sahelian CILSS States: https://www.ppzs.org/actualites/cassecs, https://twitter.com/projetcassecs

GEF UNEP International Nitrogen Management System: https://www.inms.international/

Claire Delon

Rechercher