Gould-Simpson Room 352
E-mail Address: email@example.com
I work extensively in the biogeophysical sciences, and aim to merge the latest scientific information with data generation and analysis to identify and take advantage of opportunities while diagnosing and solving problems related to changes in weather and climate. While I participate in various laboratory projects, I contribute mostly to the Climate-induced Vegetation Change: Past and Future, Regional Climate Science and Assessment, and Climate Change and Sea Level research foci.
As a central piece of the first two foci, I am interested in what kinds of changes in climate it takes to put vegetation of Southwestern deserts, grasslands, and forests under abnormal or extreme environmental conditions. For example, fewer occurrences of freezing temperatures in the Sonoran Desert region in recent decades make winter a lot more hospitable for certain species such as the iconic saguaro cactus. Also, droughts and warmer temperatures can act alone or in tandem to bring about conditions of higher water stress. But due in part to terrain in the Southwest ranging from below sea level to above treeline and producing diverse climatic and biotic zones, the spatial patterns of such conditions vary tremendously. This not only makes reason for more inquiry, but also calls for production of some captivating maps. My most recent contributions to the Regional Climate Science and Assessment focus include development of new projects that examine weather phenomena associated with historical floods and weather extremes relevant to agriculture.
For the latter, I map areas potentially impacted by sea level rise through the spatial analysis of digital elevation models at both global and national levels. In addition to the over 250 documentaries, magazines, newspapers, and organizations that have used results from this project in their publications and exhibits, tens of thousands of people have viewed the analyses through our Web map visualization tools.
In addition to these research foci, I recently launched a new branch of study for the laboratory that focuses on Geospatial Environmental Modeling (GEM). Our goal is to aggregate climate data in a state-of-the-art geographic information system (GIS) in order to assess and anticipate environmental impacts from climatic hazards at regional scales.
Besides research activities, I administer several facets of the laboratory such as lake sediment core archives, computers, analysis equipment, and the website.
Holmgren, C.A., J.L. Betancourt, M.C. Peñalba, J. Delgadillo, K. Zuravnsky, K.L. Hunter, K.A. Rylander, and J.L. Weiss. 2014. Evidence against a Pleistocene desert refugium in the Lower Colorado River Basin. Journal of Biogeography DOI: 10.1111/jbi.12337.
Parris, A., P. Bromirski, V. Burkett, D. Cayan, M. Culver, J. Hall, R. Horton, K. Knuuti, R. Moss, J. Obeysekera, A. Sallenger, and J. Weiss. 2012. Global Sea Level Rise Scenarios for the US National Climate Assessment. NOAA Tech Memo OAR CPO-1, 37 pp.
Weiss, J.L., J.L. Betancourt, and J.T. Overpeck. 2012. Climatic limits on foliar growth during major droughts in the southwestern USA. Journal of Geophysical Research 117, G03031, doi:10.1029/2012JG001993.
Weiss, J.L., J.T. Overpeck, and J.E. Cole. 2012. Warmer led to drier: Dissecting the 2011 drought in the southern U.S. Southwest Climate Outlook 11(3): 3-4.
Strauss, B.H., R. Ziemlinski, J.L. Weiss, and J.T. Overpeck. 2012. Tidally-adjusted estimates of topographic vulnerability to sea level rise and flooding for the contiguous United States. Environmental Research Letters 7: 014033 10.1088/1748-9326/7/1/014033.
Weiss, J.L., J.T. Overpeck, and B. Strauss. 2011. Implications of recent sea level rise science for low-elevation areas in coastal cities of the conterminous U.S.A. Climatic Change 105: 635-645.
Weiss, J.L., C.L. Castro, and J.T. Overpeck. 2009. Distinguishing pronounced droughts in the southwestern United States: Seasonality and effects of warmer temperatures. Journal of Climate 22: 5918-5932.
Overpeck, J.T. and J.L. Weiss. 2009. Projections of future sea level becoming more dire. Proceedings of the National Academy of Sciences of the United States of America 106: 21461-21462.
Weiss, J.L. and J.T. Overpeck. 2005. Is the Sonoran Desert losing its cool? Global Change Biology 11: 2065-2077.
Weiss, J.L., D.S. Gutzler, J.E. Allred Coonrod, and C.N. Dahm. 2004. Long-term vegetation monitoring with NDVI in a diverse semiarid setting, central New Mexico, U.S.A. Journal of Arid Environments 58: 248-271.
Weiss, J.L., D.S. Gutzler, J.E. Allred Coonrod, and C.N. Dahm. 2004. Seasonal and interannual relationships between vegetation and climate in Central New Mexico, U.S.A. Journal of Arid Environments 57: 507-534.
Studies Laboratory, Department of Geosciences, The University of Arizona
June 12, 2014