H12B:
Evapotranspiration: Advances in in Situ Measurements and Remote Sensing Based Modeling Approaches II

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Session ID#: 34381

Session Description:
The estimation of evapotranspiration (ET) is prone to large uncertainties. This session will cover both in situ and satellite-based estimations of ET. In situ methods (lysimeters, eddy covariance, Bowen ratio, sap flow, etc.) are important for understanding ET processes and the verification of remote sensing and modelling results, but are also prone to systematic and random errors, especially in biologically diverse and topographically complex systems. The sources of bias and uncertainty and their importance tend to vary by instrument type, environment, spatio-temporal scale, and modeling approach. Thus, ET maps from upscaled in situ and remotely-sensed data can vary considerably. The scope of the session will include (1) ET estimation with in situ devices: improved methods and upscaling approaches and analysis of long time series; (2) advances in ET estimation by “remote sensing” using optical and thermal bands; (3) applications for a range of spatio-temporal scales and (4) ET estimate inter-comparisons.
Primary Convener:  Gabriel B Senay, U.S. Geological Survey Earth Resources Observation and Science Center, Integrated Science and Applications Branch, Fort Collins, CO, United States
Conveners:  Sibylle K Hassler, Karlsruhe Institute of Technology, Karlsruhe, Germany, Harrie-Jan Hendricks Franssen, Agrosphere Institute (IBG-3), Research Centre Juelich, Juelich, Germany and Mario Bretfeld, Smithsonian Tropical Research Institute, Balboa, Panama
Chairs:  Mario Bretfeld, Organization Not Listed, Washington, DC, United States, Sibylle K Hassler, Karlsruhe Institute of Technology, Karlsruhe, Germany and Harrie-Jan Hendricks Franssen, Agrosphere Institute (IBG-3), Forschungszentrum Jülich, Jülich, Germany
OSPA Liaison:  Naga Manohar Velpuri, ARTS Contractor, InuTeq LLC, Contractor to U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center, Sioux Falls, SD, USA, Sioux Falls, SD, United States

Cross-Listed:
  • B - Biogeosciences
  • GC - Global Environmental Change
  • IN - Earth and Space Science Informatics
Index Terms:

1622 Earth system modeling [GLOBAL CHANGE]
1804 Catchment [HYDROLOGY]
1813 Eco-hydrology [HYDROLOGY]
1818 Evapotranspiration [HYDROLOGY]

Abstracts Submitted to this Session:

Evaluating Micrometeorological Estimates of Groundwater Discharge from Great Basin Desert Playas (211265)
Tracie Jackson, USGS Nevada Water Science Center, Henderson, NV, United States, Keith J Halford, USGS, Carson City, NV, United States and Philip Gardner, U.S. Geological Survey, Carson City, United States
Estimating daily surface latent heat flux using land surface temperature over Eucalypt forest savanna of Northern Australia (220686)
Veronica Barraza Bernadas1, Francisco Grings2, Dara Entekhabi3, Natalia Restrepo-Coupe4, Esteban Roitberg1 and Alfredo R Huete5, (1)Instituto de Astronomía y Física del Espacio, Buenos Aires, Argentina, (2)Instituto de Astronomia y Fisica del Espacio (CONICET/UBA), Quantitative Remote Sensing Group, Buenos Aires, Argentina, (3)Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, Cambridge, MA, United States, (4)University of Arizona, Department of Ecology & Evolutionary Biology, Tucson, United States, (5)University of Technology Sydney, Faculty of Science, Ultimo, NSW, Australia
A comparison of airborne evapotranspiration maps and sapflow measurements in oak and beech forest stands (231219)
Martin Schlerf1, Kaniska Mallick2, Sibylle K Hassler3, Theresa Blume4, Franz Ronellenfitsch5, Max Gerhards5, Thomas Udelhoven6 and Markus Weiler7, (1)Luxembourg Institute of Science and Technology (LIST), Environmental Research and Innovation (ERIN), Belvaux, Luxembourg, (2)University of California Berkeley, Department of Environmental Science, Policy and Management, Berkeley, United States, (3)Karlsruhe Institute of Technology, Karlsruhe, Germany, (4)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Hydrology, Potsdam, Germany, (5)LIST, Belvaux, Luxembourg, (6)University of Trier, Remote Sensing & Geoinformatics Department, Trier, Germany, (7)Albert-Ludwigs-University of Freiburg, Chair of Hydrology, Freiburg, Germany
Challenges in Estimating Evapotranspiration of Young Sparse Stands in a Boreal Forest of Eastern-Canada (241813)
Bram Hadiwijaya1, Daniel Nadeau1 and Steeve Pépin2, (1)Laval University, Civil and Water Engineering, Quebec City, QC, Canada, (2)Laval University, Agriculture and Food Science, Quebec City, QC, Canada
Reducing Uncertainty in Transpiration Estimation in Wet Tropical Forests and Upscaling Sap Flux Measurements in Complex Heterogeneous Systems (Invited) (278108)
Georgianne W Moore1, Luiza Maria T Aparecido1 and Aline Jaimes2, (1)Texas A&M University College Station, Ecosystem Science and Management, College Station, United States, (2)Texas A&M University College Station, Ecosystem Science and Management, College Station, TX, United States
On the coupled use of eddy covariance, sap flow sensors and remote sensing information for Evapotranspiration estimates in a typical heterogeneous Mediterranean ecosystem. (280904)
Roberto Corona, University of Cagliari, Cagliari, Italy and Nicola Montaldo, ARRAY(0xe4d8888), Cagliari, Italy
Comparison of Sap Flow- and White’s Equation-Based Estimates of Groundwater Evapotranspiration (286353)
Mark Widdowson, Virginia Polytechnic Institute and State University, Civil and Environmental Engineering, Blacksburg, VA, United States and Barry Harding, AECOM, Grand Rapids, MI, United States

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