DOI: 10.1016/j.quascirev.2013.01.031
Scopus记录号: 2-s2.0-84880587811
论文题名: Seasonal variations in aridity and temperature characterize changing climate during the last deglaciation in New Zealand
作者: Sikes E.L. ; Medeiros P.M. ; Augustinus P. ; Wilmshurst J.M. ; Freeman K.R.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 74 起始页码: 245
结束页码: 256
语种: 英语
英文关键词: Antarctic Cold Reversal
; Aridity
; Biomarkers
; Biomass burning
; Carbon isotopes
; Climate change
; Compound specific isotopes
; Deglacial climate
Scopus关键词: Antarctic cold reversals
; Aridity
; Biomass-burning
; Carbon isotopes
; Compound-specific isotopes
; Deglacial
; Atmospheric temperature
; Biomarkers
; Carbon
; Glacial geology
; Isotopes
; Plants (botany)
; Climate change
; aridity
; biomarker
; carbon
; carbon isotope
; climate variation
; cooling
; glacial-interglacial cycle
; global warming
; last deglaciation
; Last Glacial Maximum
; sea surface temperature
; seasonal variation
; seasonality
; temperature effect
; Auckland
; New Zealand
; North Island
英文摘要: New multiproxy records of aridity from northern New Zealand assess the seasonality and overall pattern of wetness through the Last Glacial Coldest Period (LGCP) to the early Holocene in the subtropical Southwest Pacific. Biomass burning indicators based on terrestrial biomarkers and δ13C of individual plant leaf wax carbon compounds (n-alkanoic acids) from a maar lake were used to track aridity. In combination with published sea surface temperatures and new pollen-based temperature estimates from the same core, seasonal climatological changes in the Auckland area were determined from 27 to 9cal.kaBP. These proxies document a shift from cold and dry conditions in the Last Glacial Maximum to seasonally wetter conditions through the deglaciation. Spring became warmer first and possibly wetter while summers remained drier and initially cooler. The progression from cold-dry to warm-wet was punctuated by the Antarctic Cold Reversal (ACR) which stands out as having wetter conditions in both spring and summer and mild cooling largely concentrated in spring. The seasonal climate trends observed here can be plausibly explained by a rapid change from a subpolar climate to one with subtropical control in this region of the southwest Pacific across the Last Glacial to Interglacial transition. A southerly shift and decreasing intensity of the westerly wind belt after the LGCP is considered to have driven the early deglacial warming and pulse of wetness whereas a northward shift without a commensurate increase in intensity of the westerlies may explain conditions in the ACR. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60578
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Institute of Marine and Coastal Science, Rutgers University, 71 Dudley Rd., New Brunswick, NJ 08901, United States; School of Geography and Environmental Science, University of Auckland, Auckland, New Zealand; Landcare Research, Lincoln, Canterbury, New Zealand; Department of Geosciences, Pennsylvania State University, University Park, PA 16802, United States
Recommended Citation:
Sikes E.L.,Medeiros P.M.,Augustinus P.,et al. Seasonal variations in aridity and temperature characterize changing climate during the last deglaciation in New Zealand[J]. Quaternary Science Reviews,2013-01-01,74