Duke University Libraries
View Item 
  •   DukeSpace
  • Duke Scholarly Works
  • Scholarly Articles
  • View Item
  •   DukeSpace
  • Duke Scholarly Works
  • Scholarly Articles
  • View Item
    • Login
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Estimation of long-term basin scale evapotranspiration from streamflow time series

    Thumbnail
    View / Download
    1.5 Mb
    Date
    2010-10-29
    Authors
    Hui, D
    Jackson, Robert
    Katul, Gabriel G
    McCarthy, HR
    Oren, R
    Palmroth, S
    Repository Usage Stats
    281
    views
    176
    downloads
    Abstract
    We estimated long-term annual evapotranspiration (ETQ) at the watershed scale by combining continuous daily streamflow (Q) records, a simplified watershed water balance, and a nonlinear reservoir model. Our analysis used Q measured from 11 watersheds (area ranged from 12 to 1386 km 2) from the uppermost section of the Neuse River Basin in North Carolina, USA. In this area, forests and agriculture dominate the land cover and the spatial variation in climatic drivers is small. About 30% of the interannual variation in the basin-averaged ETQ was explained by the variation in precipitation (P), while ETQ showed a minor inverse correlation with pan evaporation. The sum of annual Q and ETQ was consistent with the independently measured P. Our analysis shows that records of Q can provide approximate, continuous estimates of long-term ET and, thereby, bounds for modeling regional fluxes of water and of other closely coupled elements, such as carbon. Copyright 2010 by the American Geophysical Union.
    Type
    Journal article
    Permalink
    http://hdl.handle.net/10161/4072
    Published Version (Please cite this version)
    10.1029/2009WR008838
    Publication Info
    Hui, D; Jackson, Robert; Katul, Gabriel G; McCarthy, HR; Oren, R; & Palmroth, S (2010). Estimation of long-term basin scale evapotranspiration from streamflow time series. Water Resources Research, 46(10). pp. W10512. 10.1029/2009WR008838. Retrieved from http://hdl.handle.net/10161/4072.
    This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
    Collections
    • Scholarly Articles
    More Info
    Show full item record

    Scholars@Duke

    Jackson

    Robert B. Jackson

    Adjunct Professor of Earth & Ocean Sciences
    Robert B. Jackson is the Nicholas Chair of Global Environmental Change in the Earth and Ocean Sciences Division of the Nicholas School of the Environment and a professor in the Biology Department. His research examines how people affect the earth, including studies of the global carbon and water cycles, biosphere/atmosphere interactions, energy use, and global change. Rob Jackson received his B.S. degree in Chemical Engineering from Rice University (1983). He worked four years for the Dow
    Katul

    Gabriel G. Katul

    Theodore S. Coile Professor of Hydrology and Micrometeorology
    Gabriel G. Katul received his B.E. degree in 1988 at the American University of Beirut (Beirut, Lebanon), his M.S. degree in 1990 at Oregon State University (Corvallis, OR) and his Ph.D degree in 1993 at the University of California in Davis (Davis, CA).  He is currently the Theodore S. Coile Professor of Hydrology and Micrometeorology at the Nicholas School of the Environment and the Department of Civil and Environmental Engineering at Duke University (Durham,
    Oren

    Ram Oren

    Nicholas Professor of Earth Systems Science
    With his graduate students, Dr. Oren quantifies the components of water flux in forest ecosystems and the influence of biotic and abiotic factors on water and, due to strong links between carbon and water, on carbon flux. Climate variability, including variations in air temperature, vapor pressure deficit, incoming radiation and soil moisture, and environmental change, including elevated atmospheric carbon dioxide, affect the intra- and inter-annual patterns and amounts of water used by forest e
    Palmroth

    Sari Palmroth

    Associate Research Professor in the Division of Environmental Science and Policy
    Dr. Palmroth's research focuses on the effects of resource availability and climatic variability on carbon uptake and allocation of individual shoots, trees and forest ecosystems. She studies ecophysiological processes in trees from leaf to stand scales, with special emphasis on conifers. In particular, Dr. Palmroth is interested in the radiative transfer in forest canopies, how the radiation regime is affected by conifer shoot structure, and what the feedbacks are between availability of solar
    Alphabetical list of authors with Scholars@Duke profiles.
    Open Access

    Articles written by Duke faculty are made available through the campus open access policy. For more information see: Duke Open Access Policy

    Rights for Collection: Scholarly Articles

     

     

    Browse

    All of DukeSpaceCommunities & CollectionsAuthorsTitlesTypesBy Issue DateDepartmentsAffiliations of Duke Author(s)SubjectsBy Submit DateThis CollectionAuthorsTitlesTypesBy Issue DateDepartmentsAffiliations of Duke Author(s)SubjectsBy Submit Date

    My Account

    LoginRegister

    Statistics

    View Usage Statistics