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- I have spent much of the past three decades focused on tropical dendrochronology on mainland Southeast Asia with a focus on the long-term variability of regional hydroclimate. This work has led to the development of a robust collection of tree-ring based growth indices (e.g., ring width, earlywood and latewood width as discrete variables, earlywood minimum density derived from Blue Intensity, and stable isotopes of Oxygen) from Thailand, Vietnam, Laos, Cambodia, Myanmar and Lao PDR. From these data we have learned much about the past behavior of the Asian Monsoon and decadal-scale climate features such as the Interdecadal Pacific Oscillation or IPO (Buckley et al, 2019 in Climate Dynamics). Along with the research into the regional climate, I have been working with plant ecophysiologists to understand how trees respond to climate in a mechanistic way.
- Prior to the work in Southeast Asia I spent years working along the northern treeline in Alaska and Canada, working largely on reconstructing temperature with long-time colleagues Rosanne D'Arrigo and the late Gordon Jacoby. To that end we recently got a project funded to update and reanalyze our collections along the northern Labrador treeline in eastern Canada. That work is revealing recent changes to the mean state of climate over the region and how they are impacting the boreal forests.
- I also spent years in the southern hemisphere, studying the long-lived souther conifer Huon pine, of the family Podocarpaceae, as well as New Zealand's ancient Kauri, of the family Auracauriaceae. In all of these studies I like to look at tree rings as incorporating multiple aspects of the environment, and taking into account the physiology and ecological aspects of how trees grow. I am currently focused on understanding in far greater detail the physiological and ecological aspects of tree growth in response to climate. There is much exciting work yet to be done, and along with my colleagues from around the world, I plan to be addressing these important questions for a long time to come.
Lamont Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Tree Ring Lab
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
Phone:
(845) 365-8782
Fax:
(845) 365-8150

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Fields of interest:
Dendrochronology, Dendroclimatology, Tropical Forest Ecosystems, Arctic Treeline Studies
Lamont Projects:
Referenced in the Following News Items:
Featured in the Following Videos:
Selected Publications:
Lack of cool, not warm extremes, distinguishes late 20th Century climate in 979-year Tasmanian summer temperature reconstruction
Environmental Research Letters
(2018)
Regional trends in early-monsoon rainfall over Vietnam and CCSM4 attribution
Climate Dynamics
(2018)
European and Mediterranean hydroclimate responses to tropical volcanic forcing over the last millennium
Geophysical Research Letters
(2017)
10.1002/2017GL073057
Discrete seasonal hydroclimate reconstructions over northern Vietnam for the past three and a half centuries
Climatic Change
(2017)
On the spatial and temporal variability of ENSO precipitation and drought teleconnection in mainland Southeast Asia
Climate of the Past
(2016)
Karakorum temperature out of phase with hemispheric trends for the past five centuries
Climate Dynamics
06/2015
p.: 1-10
(2015)
10.1007/s00382-015-2685-z
Tree-Ring Reconstructed Summer Temperatures from Northwestern North America during the Last Nine Centuries
Journal of Climate - AMericadn Meterological Society
05/13
Volume: 26
(2012)
10.1175/JCLI-D-11-00139.1
Repurposing climate reconstructions for drought prediction in Southeast Asia
Climatic Change
Volume: 106
Issue: 4
p.: 691-698
(2011)
10.1007/s10584-011-0064-2
Climate as a contributing factor in the demise of Angkor, Cambodia
Proceedings of the National Academy of Sciences
Volume: 107
Issue: 15
p.: 6748-6752
(2010)
doi/10.1073/pnas.0910827107
Extension of the Southern Hemisphere Atmospheric Radiocarbon Curve, 2120-850 years BP: results from Tasmanian Huon pine
Radiocarbon
(2010)
Tree growth and inferred temperature variability at the North American Arctic treeline
Global and Planetary Change
Jan
Volume: 65
Issue: 1-2
p.: 71-82
(2009)
DOI 10.1016/j.gloplacha.2008.10.011
High-resolution palaeoclimatology of the last millennium: a review of current status and future prospects
Holocene
Feb
Volume: 19
Issue: 1
p.: 3-49
(2009)
Doi 10.1177/0959683608098952
Tree-ring based hydroclimate reconstruction over northern Vietnam from Fokienia hodginsii: eighteenth century mega-drought and tropical Pacific influence
Climate Dynamics
Aug
Volume: 33
Issue: 2-3
p.: 331-340
(2009)
DOI 10.1007/s00382-008-0454-y
Analyses of growth rings of Pinus merkusii from Lao PDR
Forest Ecology and Management
Dec 15
Volume: 253
Issue: 1-3
p.: 120-127
(2007)
DOI 10.1016/j.foreco.2007.07.018