The University of Arizona

Global Change | The Global Change Graduate Interdisciplinary Program

A.J. Timothy Jull


Timothy Jull is a senior research scientist with the Department of Geosciences at the University of Arizona. He also is director of the UA's Accelerator Mass Spectrometer Laboratory, addressing a variety of problems in geochemistry, geophysics, andarchaeology. He has been involved in studies of radiocarbon in extraterrestrial materials, such as meteorites and lunar samples.

John Paul Jones

John Paul Jones III is Dean of the College of Social and Behavioral Sciences and a  professor in the Department of Geography and Regional Development. Most of his research has addressed theories of social space, with particular attention to theoretical and methodological issues, such as the place of objectivity in social analysis, technical aspects of spatial modeling, and the geographic study of organizations, representations, identity, and resistance. He is the past editor of the Annals of the Association of American Geographers.

Charles F. Hutchinson

Chuck Hutchinson (now retired) is a geographer with specializations in arid lands and remote sensing. His research focused on (1) developing inventory and monitoring techniques for agriculture and natural resources using satellite, air-borne and ground-based observing systems, and (2) advancing policies that promote the use of satellite data.

Malcolm Hughes

Malcolm K. Hughes studies how and why climate varies on interannual to century time scales. Specific areas of interest include past climate in Europe, Asia, and the Sierra Nevada, as indicated by tree rings; fine detail of wood structure revealed bymicrodensitometry; and the potential of 3,000-year-old and older giant sequoia as proxy climate records. He is also a collaborator in an effort to improve knowledge of the Earth's climate since AD 1000 from tree rings, ice cores, laminated sediments, and historical records.

Lon L. Hood

Lon Hood's research currently focuses on gas-grain interactions in the early solar nebula, geophysical studies of the Moon and Mars, and satellite data studies of the Earth's stratosphere. The stratospheric work consists of analysis and interpretation of satellite remote sensing data relevant to long-term variability. The relative importance of dynamics and chemistry in producing observed ozone trends at northern midlatitudes is a major topic of current research.

Hoshin Gupta

Professor Gupta (PhD 1984) specializes in Systems Analysis and Modeling for environmental science. He is partuclarly interested in the “Learning” problem, and his research is focused on methods for reconciling models with data, and for dealing with predictive uncertainty. His team has made contributions to hydrology and hydrometeorology for the National Science Foundation, National Weather Service, and National Aeronautics and Space Administration.

David Goodrich

David C. Goodrich is a Research Hydraulic Engineer with the USDA-Agricultural   Research Service in Tucson, AZ. Current research efforts are directed to scaling issues in rainfall-runoff modeling, identification of dominant hydrologic processes over a range of basin scales, climatic change impacts on semiarid hydrologic response, incorporation of remotely sensed data into hydrologic models, functioning of semiarid riparian systems, and recharge from ephemeral channels. 

Mark Giampapa

Mark Giampapa's research interests include stellar magnetic cycles and magnetic activity,asteroseismology, atmospheres of young stars, high resolution stellar spectroscopy,extrasolar planetary search techniques, and stellar flares. His current work focuses on the study of magnetic field-related phenomena as seen in the atmospheres of both late-type stars and young stars still in the process of formation.


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