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L'article du mois (octobre 2019)

TEMPERATURE VARIABILITY BETWEEN 1951 AND 2014 IN GERMANY AND ASSOCIATED EVOLUTION OF APPLE BLOOM ONSET

Sarah-Sophie WEIL, Albin ULLMANN, Pierre CAMBERLIN. Climatologie, vol. 15 (2018)

Apple tree bloom onset in Germany has advanced by 2 days/decade in 1951-2014 and by 3 days/decade in 1988-2014, behaving similarly in respect to its evolution since 1951 and its sensitivity to temperature to other species’ phenological spring phases. The evolution however was not linear; by conducting a split moving-window dissimilarity analysis (SMWDA) we were able to detect the “break-period” 1987-1989 which coincides with a breakpoint that has been identified in the phases of the North Atlantic Oscillation (NAO).

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  • L'article du mois (septembre 2019)

    On the Angola Low interannual variability and its role in modulating ENSO effects in southern Africa.

    Pascale S, B Pohl, S B Kapnick & H Zhang (2019) Journal of Climate, 32, 4783-4803. doi:10.1175/JCLI-D-18-0745.1

    The Angola low is a summertime low pressure system that affects the convergence of low-level moisture fluxes into southern Africa. Interannual variations of the Angola low reduce the seasonal prediction skills for this region that arise from coupled atmosphere–ocean variability. Despite its importance, the interannual dynamics of the Angola low, and its relationship with El Niño–Southern Oscillation (ENSO) and other coupled modes of variability, are still poorly understood,

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  • Offre de thése dans le cadre du projet PubPrivLand

    La résilience des écosystèmes forestiers tempérés face au changement climatique: évolution des ressources hydriques et fonctionnement biogéochimiques des sols pour des forêts de plaine et de montagne de Bourgogne Franche-Comté

     

    Directeur de thèse HDR : Dr. Phillipe AMIOTTE SUCHET
    Coordonnées: 6 bd Gabriel, 21000 Dijon / philippe.amiotte-suchet(at)u-bourgogne.fr / 03 80 39 39 71 Equipe SED – UMR 6282 Biogéosciences, CNRS-uBFC-EPHE

    Co-directeur de thèse : Dr. Thierry CASTEL Coordonnées : 6 bd Gabriel, 21000 Dijon / thierry.castel(at) u-bourgogne.fr / 03 80 39 38 23 Equipe CRC – UMR 6282 Biogéosciences, CNRS-uBFC-EPHE

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  • L'article du mois (août 2019)

    Heat wave occurrences over Senegal during spring: regionalization and synoptic patterns

    Sambou M-J G, S Janicot, B Pohl, D Badiane, AL Dieng & A Gaye International Journal of Climatology, in press. https://doi.org/10.1002/joc.6220

    Based on twelve Senegalese stations of the Global Summary of the Day (GSOD) database (1979‐2014), Heat Waves (HW) are defined for each station in spring (March‐April‐May, the hottest season in Senegal) as the daily maximum temperature (Tx), minimum temperature (Tn), or average apparent temperature of the day (AT), exceeding the corresponding 95% mobile percentile for at least three consecutive days.

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  • L'article du mois (juillet 2019)

    The light-deficient climates of Western Central African evergreen forests.

    Nathalie Philippon, Guillaume Cornu, Lou Monteil, Valery Gond, Vincent Moron, Julien
    Pergaud, Geneviève Sèze, Sylvain Bigot, Pierre Camberlin, Charles Doumenge, Adeline
    Fayolle, Alfred Ngomanda
    . Environmental Research Letters, 2019, 14 (3).

    Rainfall thresholds under which forests grow in Central Africa are lower than those of Amazonia and SE Asia. Attention is thus regularly paid to rainfall whose seasonality and interannual variability has been shown to control Central African forests’ water balance and photosynthetic activity. Nonetheless, light availability is also recognized as a key factor to tropical forests. Therefore this study aims to explore the light conditions prevailing across Central Africa, and their potential impact on forests traits.

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