341 Measurement and Modeling of near-Surface Soil Water and Energy Fluxes: I

Oral Session
S01 Soil Physics Accurate assessment of near-surface soil water and energy fluxes is fundamental in coupling terrestrial and atmospheric hydrological processes. The magnitude and seasonality of these fluxes has a strong impact on vegetation productivity and how water partitions itself throughout all phases of the hydrologic cycle. Despite the importance of near-surface water and energy fluxes, accurate measurements are difficult and typically rely on indirect assessments. In addition, measurement of these fluxes at relevant spatiotemporal scales remains problematic, especially for calibration and verification of remotely sensed land surface properties that may be complicated by the heterogeneous distribution of vegetation and water inputs.

Cosponsor(s):

Climatology & Modeling
Wednesday, October 19, 2011: 8:00 AM-11:55 AM
Henry Gonzalez Convention Center, Room 007B

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Organizers:
Robert C. Schwartz , Gerard Kluitenberg , Douglas Cobos and Miles Dyck
8:05 AM
On Measuring Shallow Liquid Water Fluxes Associated with Evaporation.
Joshua L. Heitman, North Carolina State University; Robert Horton, Agronomy Department; Michael D. Novak, University of British Columbia; Xinhua Xiao, Iowa State University; Pukhraj K. Deol, North Carolina State University; Tusheng Ren, China Agricultural University
8:20 AM
Improved Determination of Soil Water Flux and Thermal Properties with a Penta-Needle Heat Pulse Probe.
Masaru Sakai, Mie University; Changbing Yang, the University of Texas at Austin; Gerard Kluitenberg, Kansas State University; Scott B. Jones, Utah State University
8:35 AM
8:50 AM
A Penta-Needle Heat Pulse Probe Array for Soil Subsurface Evaporation and Heat Flux Estimates.
Scott B. Jones, Utah State University; Masaru Sakai, Mie University; Markus Tuller, University of Arizona
9:05 AM
Synergistic Increase In Evaporation by Soil Heterogeneity.
Maria Ines Dragila, Oregon State University; Noam Weisbrod, Zuckerberg Institute for Water Research; Uri Nachshon, Ben Gurion University of the Negev
9:20 AM
Quantification of Soil Water Evaporation Using TDR-Microlysimetery.
Jourdan M. Bell, USDA-ARS-CPRL; Robert C. Schwartz, USDA-ARS-CPRL; Kevin J. Mcinnes, Texas A&M University; Terry A. Howell, USDA-ARS-CPRL; Cristine Morgan, Texas A&M University
9:50 AM
10:10 AM
Soil Heat Flux Determined From Diel Water Content and Temperature Variations.
Steven R. Evett, USDA-ARS; Nurit Agam, Agricultural Research Organization of Israel; William P. Kustas, USDA-ARS Hydrology and Remote Sensing Laboratory; Paul D. Colaizzi, USDA-ARS; Robert C. Schwartz, USDA-ARS
10:25 AM
Measurement of NH3 Emission At Dairy Lagoon Water Application Sites.
Sang R. Lee, USDA-ARS, U.S. Salinity Laboratory; Scott R. Yates, USDA-ARS, U.S. Salinity Laboratory; Scott A. Bradford, USDA-ARS, U.S. Salinity Laboratory
10:40 AM
Partitioning Evapotranspiration Into Evaporation and Transpiration In a Corn Field.
Xinhua Xiao, Iowa State University; Thomas Sauer, USDA-ARS National Laboratory for Agriculture & the Environment; Jeremy Singer, USDA-ARS National Laboratory for Agriculture and the Environment; Robert Horton, Agronomy Department; Joshua L. Heitman, North Carolina State University; Tusheng Ren, China Agricultural University
10:55 AM
A Soil Water Balance Approach: Quantifying the Contribution of Shallow and Deep Roots On the Edwards Plateau.
Ieyasu Tokumoto, Texas A&M University; James Heilman, Texas A&M University; Kevin McInnes, Texas A&M University; Ray H. Kamps, Texas A&M University; Cristine Morgan, Texas A&M University
11:10 AM
Three Dimensional Electrical Resistivity Imaging of Soil Water Content and Cracking In a Vertisol.
Jason P. Ackerson, Texas A&M University; Kevin McInnes, Texas A&M University; Cristine Morgan, Texas A&M University; Mark Everett, Texas A&M University
11:25 AM
Monitoring near Surface Soil Water and Associated Dynamics of Infiltration and Evaporation Fluxes.
Robert C. Schwartz, USDA-ARS; Alan J. Schlegel, Kansas State University; Steven R. Evett, USDA-ARS; R. Louis Baumhardt, USDA-ARS
11:55 AM
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