Evaporation, sensible heat and canopy conductance of fallow savannah and patterned woodland in the Sahel

P. Kabat, A.J. Dolman, J.A. Elbers

    Research output: Contribution to journalArticleAcademicpeer-review

    47 Citations (Scopus)

    Abstract

    The behaviour of evaporation, sensible heat and canopy conductance of fallow savannah and patterned woodland in the Sahel is studied for the HAPEX-Sahel Intensive Observation Period. Both fallow savannah and patterned woodland reach evaporation rates of 4–5 mm day−1 during the rainy part of the IOP and show a decline, after the rains have ceased, to 2 mm day−1. Sensible heat fluxes are different for the two vegetation types. This is also reflected in the behaviour of the evaporative fraction. Analysis of the vegetation surface conductance of the vegetation part shows that maximum values for fallow savannah are around 10 mm s−1, and for patterned woodland up to 40 mm s−1. The response of the conductance to vapour pressure deficit is different for the two vegetation types. This is attributed to differences in C3 and C4 species composition. The consequences of these differences for modelling vegetation-atmosphere interaction in the semi-arid tropics are discussed.
    Original languageEnglish
    Pages (from-to)494-515
    JournalJournal of Hydrology
    Volume188-189
    Issue number1-4
    DOIs
    Publication statusPublished - 1997

    Keywords

    • hydrology
    • evapotranspiration
    • microclimate
    • vegetation
    • interactions
    • plant communities
    • research
    • sahel

    Fingerprint Dive into the research topics of 'Evaporation, sensible heat and canopy conductance of fallow savannah and patterned woodland in the Sahel'. Together they form a unique fingerprint.

  • Cite this