Dr. Peter Soulé, Professor
Interests and Research:
Pete's main area of research deals with aspects of climate and vegetation change. He currently is finishing a multi-year project funded by the National Science Foundation to determine if Douglas-fir and ponderosa pine forests of the Northern Rockies USA will grow faster under conditions of an increasingly carbon dioxid-rich atmosphere and a projected warmer and drier climate. Pete also has an ongoing project funded by ASU’s University Research Council investigating potential differences in radial growth rates and water use efficiency of ponderosa pine trees along elevational gradients in the northern Rocky Mountains. A third major ongoing project deals with a tree-ring reconstruction of rainfall from tropical cyclones on the North Carolina coastal plain from live and remnant wood from longleaf pine trees. In support of his tree-ring research, Pete operates the Department of Geography and Planning’s Appalachian Tree Ring Lab. Pete is currently sharing the lab with Dr. Saskia van de Gevel and any students interested in pursuing tree-ring research.
Pete teaches Climate Change, Introduction to Physical Geography, Weather and Climate, Global Climates and Meteorology, and graduate courses in Natural Hazards and Tree Ring Research.
2013 P. T. Soulé and P. A. Knapp. “Radial Growth Rates of Two Co-occurring Coniferous Trees in the Northern Rockies during the Past Century.” */Journal of Arid Environments /*V. 94: 87-95 (link to PDF).
2013 J. T. Maxwell, J. T. Ortegren, P. A. Knapp, and P. T. Soulé. “Tropical Cyclones and Drought Amelioration in the Gulf and Southeastern Coastal United States.” */Journal of Climate/* (doi:10.1175/JCLI-D-12-00824.1) (link to PDF).
2013 P. A. Knapp, P. T. Soulé and J. T. Maxwell. “Mountain Pine Beetle Selectivity in Old-Growth Ponderosa Pine Forests, Montana, USA.” */Ecology and Evolution/* (DOI – 10.1002/ece3.522) (link to PDF).
2012 G. M. Kelly, B. F. Taubman, L. B. Perry, J. P. Sherman, P. T. Soulé, and P. J. Sheridan. “Relationships between Aerosols and Precipitation in the Southern Appalachian Mountains.” */International Journal of Climatology/* DOI:10.1002/joc.3632. (link to PDF).
2012 G. M. Kelly, L. B. Perry, B. Taubman, and P. T. Soulé. “Synoptic Classification of Precipitation Events in the Southern Appalachian Mountains.” */Climate Research/* V. 55: 1-15. link
2012 P. White, S. van de Gevel, and P. T. Soulé. “Succession and Disturbance in an Endangered Red Spruce-Fraser Fir Forest in the Southern Appalachian Mountains, North Carolina, U.S.A.. */Endangered Species Research/*. V. 18: 17-25.
(Link to PDF).
2012 J. T. Maxwell, P. T. Soulé, P. A. Knapp and J. T. Ortegren. "Drought-Busting Tropical Cyclones in the Southeastern Atlantic United States: 1950–2008." */Annals of the Association of American Geographers. /*/V. 102: 259-275.* */ (link to PDF)
2011 P. A. Knapp and P. T. Soulé. “Reconstructing Annual Area Burned in the Northern Rockies, USA: AD 1626-2008. Geophysical Research Letters. V. 38: L17402, doi:10.1029/2011GL048119 (link to PDF)
2011 J. T. Maxwell and P. T. Soulé. “Drought and Other Driving Forces Behind Population Change in Six Rural Counties in the United States.” Southeastern Geographer. V. 51: 133-148. (link to PDF)
2011 J. T. Ortegren, P. A. Knapp, J. T. Maxell, W. Tyminski, and P. T. Soulé. “Ocean-Atmosphere Influences on Low-Frequency Warm Season Drought Variability in the Gulf Coast and Southeastern U.S.A.” Journal of Applied Meteorology and Climatology. V. 50: 1177-1186. (link to PDF)
2011 P. T. Soulé and P. A. Knapp. “Radial Growth and Increased Water-Use Efficiency for Ponderosa Pine Trees in Three Regions in the Western United States. The Professional Geographer. V. 63: 1-13. (link to PDF)
2011 P. T. Soulé. “Changing Climate, Atmospheric Composition, and Radial Tree Growth in a Spruce-Fir Ecosystem on Grandfather Mountain, North Carolina.” Natural Areas Journal. V. 31: 65-74. (link to PDF)
2010 P. A. Knapp and P. T. Soulé. “Increasing water-use efficiency and age-specific growth responses of old-growth ponderosa pine trees in the Northern Rockies” Global Change Biology. V. 17: 631-641. Doi: 10.1111/j.1365-2486.2010.02209.x. (link to PDF)
2009 J. T. Maxwell and P. T. Soulé. “Drought in the United States during 2007: Historical perspectives.” Climate Research. V. 38: 95-104. ( link to PDF)
2008 P.A. Knapp and P.T. Soulé. "Use of Atmospheric CO2-sensitive Trees May Influence Dendroclimatic REconstructions." Geophysical Research Letters. Doi: 10.1029/2008GL035664. (link to PDF)
2008 P. T. Soulé and P. A. Knapp. Does an August Singularity Exist in the Northern Rockies of the United States? Journal of Applied Meteorology and Climatology. (DOI;0.1175/2007Jamc1735.1) (link to PDF)
2007 P. T. Soulé and P. A. Knapp. “Topoedaphic and Morphologic Complexity of Mortality and Foliar Damage Within Western Juniper Woodlands Following an Extreme Meteorological Event. Journal of Biogeography. V. 34: 1927-1937. (link to PDF)
2007 P. A. Knapp and P. T. Soulé. “Trends in mid-latitude cyclone frequency and occurrence during fire season in the Northern Rockies: 1900-2004.” Geophysical Research Letters. 34, L20707, doi:10.1029/2007GL031216. (link to PDF)
2006 P. T. Soulé and P. A. Knapp. "Radial growth rate increases in naturally occurring ponderosa pine trees: a late-20 th century CO 2 fertilization effect?" New Phytologist. V. 171 (2006): 379-390 (link to PDF)
2006 P. T. Soulé. "A Comparison of 30-yr Climatic Normals for the Southeastern United States." Southeastern Geographer. V. 45 (2005): 16-24. (link to PDF)