B044
Examining Transpiration from Ecosystem to Global Scales
Session ID#: 82493
Session Description:
Transpiration (T) dynamics both in time and across diverse ecosystems is poorly understood, causing uncertainty in estimates of terrestrial T:ET (evapotranspiration), carbon and energy fluxes, as well as regional/global hydrological cycles (e.g. via models and remote sensing). However, the number of sites where T is monitored is increasing due to both improved expertise and methodologies. Likewise, a surge of new global scale T datasets have come out including the partitioning of eddy covariance datasets (e.g. FLUXNET) and aggregations of site T estimates (e.g. SAPFLUXNET). Different methods have their strengths and weaknesses, but still have the potential to advance global modeling efforts of T dynamics as well as focused studies for specific target ecosystems. To understand the state of current and future estimates of T, this session brings together fundamental hydro-physiological principles with potential users and producers of transpiration datasets to focus on enhanced global and/or temporal coverage.
Co-Organized:
Index Terms:
0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0480 Remote sensing [BIOGEOSCIENCES]
1813 Eco-hydrology [HYDROLOGY]
1818 Evapotranspiration [HYDROLOGY]
Primary Convener: Jacob A Nelson, Max Planck Institute for Biogeochemistry, Jena, Germany
Conveners: Russell L Scott, USDA-ARS, Southwest Watershed Research Center, Tucson, AZ, United States, Brianna Rita Pagán, Ghent University, Laboratory of Hydrology and Water Management, Gent, Belgium and Markus Reichstein, Max Planck Institute for Biogeochemistry, Department of Biogeochemical Integration, Jena, Germany
Primary Liaison: Jacob A Nelson, Max Planck Institute for Biogeochemistry, Jena, Germany
Global partitioning of transpiration and evaporation from coupled water and carbon fluxes (Invited) (491550)
Sha Zhou, Columbia University of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Bofu Yu, Griffith University, Nathan, Australia and Yao Zhang, Department of Earth and Environmental Engineering, Columbia University, New York, United States
Airborne tree crown detection for predicting spatial heterogeneity of canopy transpiration in a tropical rainforest (534385)
Joyson Ahongshangbam1, Alexander Röll1, Florian Ellsäßer1, Hendrayanto Hendrayanto2 and Dirk Hölscher1,3, (1)University of Göttingen, Tropical Silviculture and Forest Ecology, Göttingen, Germany, (2)Bogor Agricultural University, Forest Management, Bogor, Indonesia, (3)University of Göttingen, Centre of Biodiversity and Sustainable Land Use, Göttingen, Germany
Applying Solar-Induced Chlorophyll Fluorescence to Improve Estimates of Hazelnut Transpiration (544115)
Will Richardson1, Stephen P Good2, David Noone3, Christopher J Still4, Chad W Higgins5 and Bonan Li2, (1)Oregon State University, Corvallis, OR, United States, (2)Oregon State University, Department of Biological & Ecological Engineering, Corvallis, OR, United States, (3)Oregon State University, College of Earth Ocean and Atmospheric Science, Corvallis, OR, United States, (4)Oregon State University, Forest Ecosystems and Society, Corvallis, OR, United States, (5)Oregon State University, Biological and Ecological Engineering, Corvallis, OR, United States
The effect of an improved dynamic vegetation phenology representation on the partitioning of transpiration and evaporation in a global land surface model (554188)
Jana Kolassa1, Rolf H Reichle1, Randal D Koster2, Qing Liu3 and Sarith P P Mahanama4, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)NASA Goddard SFC, Greenbelt, MD, United States, (3)NASA GMAO/SSAI Inc., Greenbelt, MD, United States, (4)NASA/GSFC, Greenbelt, MD, United States
Isotopic Partitioning of Evapotranspiration over a Mesic Grassland during Two Wetting-drying Episodes (597377)
Xiangmin Sun1, Bradford Paul Wilcox1, Chris Zou2 and Elaine Stebler2, (1)Texas A&M University College Station, Ecosystem Science and Management, College Station, TX, United States, (2)Oklahoma State University, Natural Resource Ecology and Management, Stillwater, OK, United States
