Détails de l'évènement
Colloque Global Change in Africa
L'objectif de cet atelier est d'étudier les avantages de l'utilisation des données d'observation de la Terre sur le continent africain pour surveiller et comprendre les changements environnementaux dus aux phénomènes naturels et aux facteurs de forçage anthropiques, et de mettre en évidence un certain nombre d'applications connexes présentant un grand intérêt pour la société.
Les principaux sujets abordés concernent les ressources en eau, l'utilisation des terres et les changements de la couverture terrestre, et les conséquences pour l'agriculture et la déforestation, l'exploitation des ressources minérales et les impacts environnementaux, les inondations, les sécheresses et la désertification, les zones côtières.
Pour suivre les échanges en direct via l'application Zoom, cliquer sur ce lien. Ou saisissez directement les codes suivants dans l'application: Meeting ID: 835 5414 4013,
Passcode: 305133, valables pour toutes les sessions du 11 au 15 janvier 2021, à partir de 13h30 le lundi 11 janvier et à partir de 09h00 les jours suivants.
Plus d'information
- sur le site du colloque
Agenda
| Day 1, 11 January 2021 | ||
| Time | Topic | Speaker |
| 13:30 – 13:45 | Welcome and introducing ISSI | Tilman Spohn (ISSI) |
| 13:45 – 14:00 | Objectives of the workshop | Anny Cazenave (ISSI) |
| Session 1: Introductory session | Chair: Anny Cazenave | |
| 14:00 – 15:00 | Global change in Africa; part 1 | Omar Baddour (WMO, Switzerland) |
| 15:00 – 16:00 | Global change in Africa; part 2 | Jean Kan Kouamé (CURAT, Côte d’Ivoire) |
| 16:00 – 16:30 | Break | |
| 16:30 – 17:30 | Space observations to monitor Global Change in Africa; the ESA programme | Jérôme Benveniste (ESA) |
| 17:30 – 18:00 | Discussion on session 1 | All participants (lead: J. Benveniste) |
| Day 2, 12 January 2021 | ||
| Time | Topic | Speaker |
| Session 2: Water resources in Africa | Chair: Stéphane Calmant | |
| 9:00 – 9:30 | Identification of problems; Sahel & semi-arid regions | Frederique Seyler (IRD, Montpellier, France) |
| 9:30 – 10:00 | Identification of problems; Eastern & southern Africa | Alex Zizinga (Makerere Univ., Uganda) |
| 10:00 – 10:30 | The challenge of ground truth data for water resource management (west Africa) | Natalie Ceperley (Univ. Bern, Switzerland) |
| 10:30 – 11:00 | Break | |
| 11:00 – 11:30 | Remote sensing (laser & radar) of surface waters in African river basins | Stephane Calmant (IRD, French Guyana) |
| 11:30 – 12:00 | Applications of the SWOT mission over African river basins | Jean-François Cretaux (LEGOS, France) |
| 12:00 – 12:30 | Combined remote sensing techniques for estimating river discharge in Africa | Angelica Tarpanelli (IRPI, Italy) |
| 12:30 – 14:00 | Lunch Break | |
| Session 2: Water resources in Africa, continued | Chair: Jean Kan Kouame | |
| 14:00 – 14:30 | Large scale water storage from GRACE
| Anne Springer (Univ. Bonn, Germany) |
| 14:30 – 15:00 | The ESA EO AFRICA Project: African Framework for Research, Innovation, Communities and Applications | Benjamin Koetz (ESA) |
| 15:00 – 15:30 | Break | |
| 15:30 – 16:00 | EO monitoring of small water bodies | Manuela Grippa (OMP, France) |
| 16:00 – 17:30 | General discussion on session 2 | All participants (leads : B. Koetz and S. Calmant) |
| Day 3, 13 January 2021 | ||
| Time | Topic | Speaker |
| Session 3: Land use & deforestation: Impacts on Agriculture | Chair: Gayane Faye | |
| 9:30 – 10:00 | Deforestation in Africa: current state | Frank Martin Seifert (ESA) |
| 10:00 – 10:30 | Drought risk assessment for agricultural systems | Jürgen Kusche (Univ. Bonn, Germany) |
| 10:30 – 11:00 | Break | |
| 11:00 – 11:30 | The CCI land cover project, application for Africa | Pierre Defourny (UC Louvain, Belgium) |
| 11:30 – 12:00 | The SEACRIFOG network | Jörg Helmschrot (SASSCAL, South Africa) |
| 12:00 – 12:30 | End users and societal needs | Chinwe Ifejika Speranza (Univ. Bern, Switzerland) |
| 12:30 – 14:00 | Lunch Break | |
| Session 4: Exploitation of mineral resources and environmental impacts | Chair: Teodolina Lopez | |
| 14:00 – 14:30 | Impacts on the environment: what space observations can tell us? | Gayane Faye (Institut des Sciences de la Terre, Dakar, Sénégal) |
| 14:30 – 15:00 | Societal Impacts of mineral exploration | Matthieu Bolay (Graduate Institute-CCDP, Switzerland) |
| 15:00 – 16:30 | General discussion on sessions 3 & 4 | All participants (leads: P. Defourny & T. Lopez) |
| Day 4, 14 January 2021 | ||
| Time | Topic | Speaker |
| Session 5: Floods & droughts in Africa | Chair: Lorena Moreira | |
| 09:30 – 10:00 | Flood hazards in Africa | Pauline Dibi Kangah (Univ. Felix Houphouet-Boigny, Ivory Coast) |
| 10:00 – 10:30 | Flood predictions and remote sensing | Marielle Gosset (IRD, France) |
| 10:30 – 11:00 | Break | |
| 11:00 – 11:30 | Impacts on environment and society; user needs | Fatima Driouech (Univ. Mohammed VI, Morocco) |
| 11:30 – 12:30 | General discussion on session 5 | All participants (Lead F. Driouech & P. Dibi Kangah) |
| 12:30 – 14:00 | Lunch Break | |
| Session 6: Coastal Zones Changes | Chair: Jérôme Benveniste | |
| 14:00 – 14:30 | Impacts of global change on African coastal zones and coastal ecosystems | Thomas Stieglitz (CEREGE, France) |
| 14:30 – 15:00 | Inventory of existing data and gaps | Rafael Almar (IRD, France) |
| 15:00 – 15:30 | The ESA Coastal Sea Level project in Africa | Anny Cazenave (ISSI) |
| 15:30 – 16:00 | Measuring bathymetry, shoreline change, etc. from space; applications to Africa | Olivier Arino (ESA) |
| 16:00 – 16:30 | Break | |
| 16:30 – 17:00 | General discussion on session 6 | All participants (lead A. Cazenave & J. Benveniste) |
| Day 5, 15 January 2021 | ||
| Time | Topic | Speaker |
| Session 7: Additional Societal Issues | Chair: Gayane Faye | |
| 10:00 – 10:30 | Impacts on health of global change in Africa | Richard Damoah (USA & Ghana) |
| Session 9: Recommendations and preparation of the Special Issue for Surveys in Geophysics | Chair: Anny Cazenave | |
| 10:30 – 12:30 | General discussion | All participants |
