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New Zealand climate over the last 500 years reconstructed from Libocedrus bidwillii Hook. f. tree-ring chronologiesSchool of Archaeology& Palaeoecology, Queen's University Belfast, Belfast BT7 1NN, UK; j.palmer{at}qub.ac.uk
Soil, Plant and Ecological Sciences Division, PO Box 84, Lincoln University, Canterbury, New Zealand Five Libocedrus bidwillii Hook. f. tree-ring chronologies were used to reconstructlate New Zealand summer (FebruaryMarch) temperatures from the present to ad 1459. The reconstructed series showed that warm periods occurred around the 1470s, 1530s, 1570s, 1600s, 17301780, 18201840, 1870s, 19201940 and the 1960s onwards. The cooler periods were around 16301680, 17901810, 18801910 and 1950. The temperature reconstruction correlates significantly with others from New Zealand and to the associated part of the 1089-year temperature reconstruction from Huon pine (Lagarostrobos franklinii C.J. Quinn) in Tasmania. The general palaeotemperature trend is also similar to a temperature series derived from oxygen isotope ratios in a New Zealand speleothem, providing an example of preliminary corroboration between two different types of proxy-climate indicators.
Key Words: Dendroclimatology dendrochronology palaeoclimatology Libocedrus bidwillii New Zealand late Holocene
The Holocene, Vol. 14, No. 2,
282-289 (2004) |
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