School of Earth and Environment

Geoffrey Bessardon Geoffrey Bessardon

Postgraduate Researcher

Email address: eegb@leeds.ac.uk
Room: FH 1.13

Affiliation: Institute for Climate and Atmospheric Science

Qualifications

2011-2013:Master Degree in Environmental Fluid Mechanics , Joseph Fourier University, Grenoble, France

2008 -2011:Bachelor in Mechanical Engineering, Joseph Fourier University, Grenoble, France

Research Interests

The summer-time boundary layer in the West African Monsoon: mixing process and the transport of pollutants

Teaching Interests

SOEE2210 Atmosphere and Ocean Dynamics

Supervisors

Funding

Dynamics-aerosol-chemistry-cloud interactions in West Africa (DACCIWA) project ist funded by the European Union 7th Framework Programm to investigate the influence of anthropogenic and natural emissions on the atmospheric composition over South West Africa and to assess their impact on human and ecosystem health and agricultural productivity.

Project outline

Massive economic and population growth and urbanisation are expected to lead to a tripling of anthropogenic emissions in southern West Africa (SWA) between 2000 and 2030, the impacts of which on human health, ecosystems, food security and the regional climate are largely unknown.

An assessment of these impacts is complicated by:

  1. a superposition with effects of global climate change,
  2. the strong dependence of SWA on the sensitive West African monsoon,
  3. incomplete scientific understanding of interactions between emissions, clouds, radiation, precipitation and regional circulations
  4. by a lack of observations to advance our understanding and improve predictions.

DACCIWA will quantify the influence of anthropogenic and natural emissions on the atmospheric composition over South West Africa and assess their impact on human and ecosystem health and agricultural productivity. It will quantify the coupling between aerosols and clouds and identify controls on the formation and persistence of low-level clouds. Further it will identify meteorological controls on precipitation, focusing the transition from stratus to convective clouds and the forcing from weather systems. DACCIWA will quantify the two way cloud and aerosol impacts on the radiation and energy budgets from the cloud scale to the scale of the West African monsoon circulation. State-of- the-art meteorological, chemistry and air-quality models, satellite retrievals of clouds, precipitation, aerosols and radiation will be assessed in close collaboration with operational centres and research findings will be communicated to policy-makers, scientists, operational centres, students, and general public using a graded communication strategy.

Publications

  • Kalthoff N; Lohou F; Brooks B; Jegede G; Adler B; Babić K; DIone C; Ajao A; Amekudzi LK; Aryee JNA; Ayoola M; Bessardon G; Danuor SK; Handwerker J; Kohler M; Lothon M; Pedruzo-Bagazgoitia X; Smith V; Sunmonu L; Wieser A; Fink AH; Knippertz P (2018) An overview of the diurnal cycle of the atmospheric boundary layer during the West African monsoon season: Results from the 2016 observational campaign, Atmospheric Chemistry and Physics, 18, pp.2913-2928. doi: 10.5194/acp-18-2913-2018
  • Flamant C; Knippertz P; Fink AH; Akpo A; Brooks B; Chiu CJ; Coe H; Danuor S; Evans M; Jegede O; Kalthoff N; Konare A; Liousse C; Lohou F; Mari C; Schlager H; Schwarzenboeck A; Adler B; Amekudzi L; Aryee J; Ayoola M; Batenburg AM; Bessardon G; Borrmann S; Brito J; Bower K; Burnet F; Catoire V; Colomb A; Denjean C; Fosu-Amankwah K; Hill PG; Lee J; Lothon M; Maranan M; Marsham J; Meynadier R; Ngamini J-B; Rosenberg P; Sauer D; Smith V; Stratmann G; Taylor JW; Voigt C; Yoboue V (2018) THE DYNAMICS-AEROSOL-CHEMISTRY-CLOUD INTERACTIONS IN WEST AFRICA FIELD CAMPAIGN: OVERVIEW AND RESEARCH HIGHLIGHTS, BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY, 99, pp.83-104. doi: 10.1175/BAMS-D-16-0256.1
  • Flamant C; KniPPertz P; Fink AH; Akpo A; BrooKs B; CHiu CJ; Coe H; Danuor S; Evans M; JegeDe O; Kalthoff N; Konaré A; Liousse C; Lohou F; Mari C; Schlager H; Schwarzenboeck A; Adler B; Amekudzi L; Aryee J; Ayoola M; BatenBurg AM; BessarDon G; Borrmann S; Brito J; Bower K; Burnet F; Catoire V; ColomB A; DenJean C; Fosuamankwah K; Hill PG; Lee J; Lothon M; Maranan M; Marsham J; Meynadier R; Ngamini JB; Rosenberg P; Sauer D; Smith V; Stratmann G; Taylor JW; Voigt C; Yoboué V (2018) The dynamics⇓aerosol⇓chemistry⇓cloud interactions in west Africa field campaign, Bulletin of the American Meteorological Society, 99, pp.83-104. doi: 10.1175/BAMS-D-16-0