Vegetation and climate change in northwest America during the past 125 kyr
Article Abstract:
Variations in the large-scale controls of climate have an influence on vegetation according to vegetation records covering the past 21 kyr in western North America. Such controls include millennial-scale variations in the ice sheet, affecting regional climates. The majority of longer North American records are not of sufficient quality. A 125-kyr record of changes to the vegetation and climate of the forest border of the eastern Cascade Range in northwest America, is presented, using pollen data. Close links between vegetation and climate variations are evident beyond the Last Glacial Maximum.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Oceanic transport of subpolar climate signals to mid-depth subtropical waters
Article Abstract:
Certain sea-surface properties including temperature, can fluctuate in synchrony with the main regional atmospheric patterns. The ocean is assumed to be submissive to the atmosphere, but studies propose an assertive oceanic role, whereby water-mass circulation controls climate fluctuation timescales. Time-series measurements were used to track imprinted signals at the surface in the North Atlantic Ocean's subpolar Labrador Basin. Geographic and temporal contexts for a section of the long-term warming trend are established.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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See-saw sea
Article Abstract:
The decadal climate oscillations of the tropical Atlantic were analyzed by Chang et al. based on an atmospheric and oceanic mathematical model. The model demonstrates atmospheric response to variations in sea surface temperature from the northern and southern hemisphere which causes cyclic rainfall and drought in the Nordeste region of Brazil. Furthermore, Chang et al.'s atmospheric model illustrated the interaction between the ocean and the atmosphere which can be utilized for long-range weather forecasting.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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