HR: 17:45h
AN: PP54A-08 INVITED [Abstracts]
TI: Process model simulations of the divergence effect
AU: * Anchukaitis, K J
EM: kja@ldeo.columbia.edu
AF: Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, NY
10964, United States
AU: Evans, M N
EM: mevans@ltrr.arizona.edu
AF: The University of Arizona, Laboratory of Tree-Ring Research, 105 West Stadium, Tucson,
AZ 85721, United States
AU: D'Arrigo, R D
EM: rdd@ldeo.columbia.edu
AF: Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, NY
10964, United States
AU: Smerdon, J E
EM: jsmerdon@ldeo.columbia.edu
AF: Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, NY
10964, United States
AU: Hughes, M K
EM: mhughes@ltrr.arizona.edu
AF: The University of Arizona, Laboratory of Tree-Ring Research, 105 West Stadium, Tucson,
AZ 85721, United States
AU: Kaplan, A
EM: alexeyk@ldeo.columbia.edu
AF: Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, NY
10964, United States
AU: Vaganov, E A
EM: eavaganov@forest.akadem.ru
AF: V.N. Sukachev Institute of Forest, Russian Academy of Sciences, Krasnoyarsk, 660036,
Russian Federation
AB:
We explore the extent to which the Vaganov-Shashkin (VS) model of conifer tree-ring formation can explain
evidence for changing relationships between climate and tree growth over recent decades. The VS model is
driven by daily environmental forcing (temperature, soil moisture, and solar radiation), and simulates tree-ring
growth cell-by-cell as a function of the most limiting environmental control. This simplified representation of tree
physiology allows us to examine using a selection of case studies whether instances of divergence may be
explained in terms of changes in limiting environmental dependencies or transient climate change. Identification
of model-data differences permits further exploration of the effects of tree-ring standardization, atmospheric
composition, and additional non-climatic factors.
DE: 0400 BIOGEOSCIENCES
DE: 1600 GLOBAL CHANGE
DE: 1616 Climate variability (1635, 3305, 3309, 4215, 4513)
DE: 4920 Dendrochronology
SC: Paleoceanography and Paleoclimatology [PP]
MN: 2007 Fall Meeting