Dr. Peter Soulé, Professor
Interests and Research:
Dr. Soulé’s main area of research deals with aspects of climate and vegetation change. He has several on-going projects in the fields of dendroclimatology, dendroecology, and climatology. In summer 2015 he began a new project funded by ASU’s University Research Council examining linkages between Arctic sea-ice extent, summer temperatures, and radial growth rates of the high elevation western tree species alpine larch. (Link to project page) Another 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. (Link to project page) Pete also is conducting a study investigating potential differences in radial growth rates and water-use efficiency of ponderosa pine trees along elevational gradients in the northern Rocky Mountains. 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 graduate and undergraduate students pursuing tree-ring research.
Pete teaches Global Climate Change, Introduction to Physical Geography, Weather and Climate, and graduate courses in Natural Hazards and Tree Ring Research.
Refereed Journal Publications (last 10 years):
2015 P. A. Knapp, J. T. Maxwell, J. T. Ortegren, and P. T. Soulé. Spatio-temporal Changes in Comfortable Weather Duration in the Continental U.S. and Implications for Human Wellness. Annals of the Association of American Geographers – accepted.
2015 D. Martin, L. B. Perry, D. Miller, and P. T. Soulé. “Snowfall Event Characteristics From a High-elevation Site in the Southern Appalachian Mountains, USA.” Climate Research V. 63: 171-190.
2014 P. T. Soulé and P. A. Knapp. “Analyses of Intrinsic Water-use Efficiency Indicate Performance differences of Ponderosa Pine and Douglas-fir in Response to CO2 Enrichment." Journal of Biogeography V. 42: 144-155. (link)
2014 P. B. White, P. T. Soulé, and S. van de Gevel. “Impacts of Human Disturbance on the Temporal Stability of Climate-Growth Relationships in a Red Spruce Forest, Southern Appalachian Mountains, USA." */Dendrochronologia/* V. 32: 71-77. (link to PDF)
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)