Physics
Scientific paper
Apr 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009eguga..1112863l&link_type=abstract
"EGU General Assembly 2009, held 19-24 April, 2009 in Vienna, Austria http://meetings.copernicus.org/egu2009, p.12863"
Physics
Scientific paper
A concept for the physical understanding of insolation-driven temperature variability on orbital timescales is developed. It relies on the observed annual cycle of temperature to estimate the climate's sensitivity to local insolation at different seasons. Based on this concept, the temperature evolution of the last 750 ky related to local insolation forcing is estimated. The seasonal template model largely reproduces the Holocene temperature trends as simulated by a coupled climate model. It predicts significant temperature variability in the eccentricity and semipreccession frequency band in the tropics and indicates that the temperature response to local insolation is highly spatially dependent. In explaining observed climate variability, the local time-independent approach complements the global Milankovitch hypothesis (climate variations are driven by northern summer insolation) and offers new insights in interpreting paleoclimate records.
Laepple Thomas
Lohmann Gerrit
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