1. Reconciling Measured and Predicted Water, Heat and Solute Transport in Soil:
A Tribute to Peter J. Wierenga
This symposium is in honor of Peter Wierenga. Peter has made immense contributions to soil science, vadose zone hydrology, and the environmental sciences through his measurements of laboratory and field-scale water, heat and solute transport processes. Moreover, Peter's observations have posed great challenges to those trying to model these processes since existing models were often inconsistent with the data. Peter's work hence also spurred the development of improved water, heat and chemical transport models. In recognition of his many contributions, this symposium will include efforts at reconciling soil water, heat and chemical transport data and models. Volunteered contributions are sought from those who are working to reconcile data and models. The symposium will include oral presentations (invited and volunteer) and poster presentations (volunteer). The symposium will be held on a single day - oral presentations in the morning, poster presentations in the afternoon, and a social activity in the evening. For information please contact Bob Horton (rhorton@iastate.edu), Rien van Genuchten (RVANG@ussl.ars.usda.gov), or Jan Hendrickx (hendrick@nmt.edu).

2. Landscape Processes: Monitoring, Mapping, and Modeling
This is proposed as a Society-wide symposium on Landscape Processes; currently it is co-sponsored by S-5. S-1 is seeking additional co-sponsors, so that funding will be available to invite speakers from other disciplines to speak at the symposium. It is proposed to use the "landscape" as a platform for integration towards a systems approach. Soils and water are among the most obvious integrated elements of landscape processes. Growing interests in landscape studies come about from many environmental and natural resource issues, such as non-point source pollution, TMDL's, landscape hydrology, spatial-temporal variability of soil water properties and its relation to landscape features, watershed management, site-specific farming, remote sensing applications in mapping, etc. Much of disciplinary research in these areas is largely dependent on soil's information and functioning. The key goal of the symposium is to bring together leading scientists in areas of soil science and related environmental sciences, such as in hydrology, ecology, and agronomy. The ultimate goal of the symposium is to stimulate interactions and collaborations with the aim to promote integrated research approaches in soil and environmental sciences within the landscape. For additional information, contact the following co-organizers: Jan W. Hopmans (jwhopmans@ucdavis.edu), Henry Lin (henrylin@psu.edu), Dennis Corwin (DCORWIN@ussl.ars.usda.gov), Gary Kachanoski (gary.kachanoski@ualberta.ca), Chris van Kessel (cvankessel@ucdavis.edu), or Don R. Nielsen (drnielsen@ucdavis.edu).

• Laboratory or field comparisons and testing of soil moisture sensors
• Studies of the variance among individual measurements and the variance of profile water contents inferred from multiple measurements in multiple profiles
• Laboratory or field (comparative) calibrations of sensors
• Investigations of measurement interferences, including temperature, bulk electrical conductivity, clay content and/or type, other mineralogy, and organic matter, etc.
• Investigations of volume sensed, both axially and radially
• Studies of the effects of small-scale soil heterogeneity

Session 2: Advances in the Characterization of Soil Structure
This session is co-sponsored by Division S-1 and S-6. The session will emphasize developments in modeling and measurement techniques of soil structure at multiple scales. Presentations will include estimates of pore geometry with medical tomography (CT) and synchrotron computed microtomography (CMT), application of scaling methods, and the use of parameters of soil structure in modeling soil hydraulic properties and other processes. Contact Daniel Giménez at Rutgers, The State University of New Jersey, gimenez@envsci.rutgers.edu, (732) 932-9477, or Clark J. Gantzer at the University of Missouri, gantzer@missouri.edu, (573) 882-0611; for further information.
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