Recent Increases in Tasmanian Huon Pine Ring Widths from a Subalpine Stand: Natural Climate Variability, CO2 Fertilisation, or Greenhouse Warming?
Tasmanian subalpine Huon pines from the extreme high-altitude limit of the species distribution provide a summer temperature reconstruction extending back beyond 800 Be. Compared to low elevation Huon pine sites, the subalpine ring-widths exhibit a straightforward direct response to current growth-s...
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ftdatacite:10.7916/d8bk1j3b 2023-05-15T13:49:10+02:00 Recent Increases in Tasmanian Huon Pine Ring Widths from a Subalpine Stand: Natural Climate Variability, CO2 Fertilisation, or Greenhouse Warming? Cook, Edward R. Francey, R. J. Buckley, Brendan M. D'Arrigo, Rosanne Dorothy 1996 https://dx.doi.org/10.7916/d8bk1j3b https://academiccommons.columbia.edu/doi/10.7916/D8BK1J3B unknown Columbia University Dendroclimatology Huon pine Paleoclimatology Botany Climatic changes article-journal ScholarlyArticle Text 1996 ftdatacite https://doi.org/10.7916/d8bk1j3b 2022-03-10T12:44:35Z Tasmanian subalpine Huon pines from the extreme high-altitude limit of the species distribution provide a summer temperature reconstruction extending back beyond 800 Be. Compared to low elevation Huon pine sites, the subalpine ring-widths exhibit a straightforward direct response to current growth-season temperatures and indicate anomalous warming of 0.33 ± O.06°C from 1967- 91. This warming is consistent with Tasmanian instrumental records and with hemispheric and global records. The possibility that the trees are responding directly to CO2 fertilisation is explored, using a high-precision record of CO2, obtained from air in Antarctic ice and firn, plus direct measurements of air from Cape Grim. The temperature forcing appears capable of explaining the ring-width variations in the alpine trees over the full range of observed periods, whereas CO2 fertilisation would require a more complex interaction and is not supported by other arguments. Two millennia-long tree-ring reconstructions of summer temperatures from South America do not exhibit the recent warming, nor other features found in the Tasmanian record on decadal to century time-scales. In fact, the South American chronologies bear little resemblance to each other, but do, however, reflect their own regional instrumental records. The Mt Read ring-width chronology, and the instrumental temperature series used for its calibration, also co-vary with climate influences of a distinctly regional character, yet still replicate many of the features reported as hemispheric and global temperatures over the last century. Spectral analysis of the Mt Read tree-ring data over the full 2,792 years suggests that at least part of the recent warming in the instrumental records could be a consequence of "natural forcing" of the record, complicating an interpretation in terms of a greenhouse-forced warming. Text Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Grim ENVELOPE(-64.486,-64.486,-65.379,-65.379) Huon ENVELOPE(-57.998,-57.998,-63.367,-63.367) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Dendroclimatology Huon pine Paleoclimatology Botany Climatic changes |
spellingShingle |
Dendroclimatology Huon pine Paleoclimatology Botany Climatic changes Cook, Edward R. Francey, R. J. Buckley, Brendan M. D'Arrigo, Rosanne Dorothy Recent Increases in Tasmanian Huon Pine Ring Widths from a Subalpine Stand: Natural Climate Variability, CO2 Fertilisation, or Greenhouse Warming? |
topic_facet |
Dendroclimatology Huon pine Paleoclimatology Botany Climatic changes |
description |
Tasmanian subalpine Huon pines from the extreme high-altitude limit of the species distribution provide a summer temperature reconstruction extending back beyond 800 Be. Compared to low elevation Huon pine sites, the subalpine ring-widths exhibit a straightforward direct response to current growth-season temperatures and indicate anomalous warming of 0.33 ± O.06°C from 1967- 91. This warming is consistent with Tasmanian instrumental records and with hemispheric and global records. The possibility that the trees are responding directly to CO2 fertilisation is explored, using a high-precision record of CO2, obtained from air in Antarctic ice and firn, plus direct measurements of air from Cape Grim. The temperature forcing appears capable of explaining the ring-width variations in the alpine trees over the full range of observed periods, whereas CO2 fertilisation would require a more complex interaction and is not supported by other arguments. Two millennia-long tree-ring reconstructions of summer temperatures from South America do not exhibit the recent warming, nor other features found in the Tasmanian record on decadal to century time-scales. In fact, the South American chronologies bear little resemblance to each other, but do, however, reflect their own regional instrumental records. The Mt Read ring-width chronology, and the instrumental temperature series used for its calibration, also co-vary with climate influences of a distinctly regional character, yet still replicate many of the features reported as hemispheric and global temperatures over the last century. Spectral analysis of the Mt Read tree-ring data over the full 2,792 years suggests that at least part of the recent warming in the instrumental records could be a consequence of "natural forcing" of the record, complicating an interpretation in terms of a greenhouse-forced warming. |
format |
Text |
author |
Cook, Edward R. Francey, R. J. Buckley, Brendan M. D'Arrigo, Rosanne Dorothy |
author_facet |
Cook, Edward R. Francey, R. J. Buckley, Brendan M. D'Arrigo, Rosanne Dorothy |
author_sort |
Cook, Edward R. |
title |
Recent Increases in Tasmanian Huon Pine Ring Widths from a Subalpine Stand: Natural Climate Variability, CO2 Fertilisation, or Greenhouse Warming? |
title_short |
Recent Increases in Tasmanian Huon Pine Ring Widths from a Subalpine Stand: Natural Climate Variability, CO2 Fertilisation, or Greenhouse Warming? |
title_full |
Recent Increases in Tasmanian Huon Pine Ring Widths from a Subalpine Stand: Natural Climate Variability, CO2 Fertilisation, or Greenhouse Warming? |
title_fullStr |
Recent Increases in Tasmanian Huon Pine Ring Widths from a Subalpine Stand: Natural Climate Variability, CO2 Fertilisation, or Greenhouse Warming? |
title_full_unstemmed |
Recent Increases in Tasmanian Huon Pine Ring Widths from a Subalpine Stand: Natural Climate Variability, CO2 Fertilisation, or Greenhouse Warming? |
title_sort |
recent increases in tasmanian huon pine ring widths from a subalpine stand: natural climate variability, co2 fertilisation, or greenhouse warming? |
publisher |
Columbia University |
publishDate |
1996 |
url |
https://dx.doi.org/10.7916/d8bk1j3b https://academiccommons.columbia.edu/doi/10.7916/D8BK1J3B |
long_lat |
ENVELOPE(-64.486,-64.486,-65.379,-65.379) ENVELOPE(-57.998,-57.998,-63.367,-63.367) |
geographic |
Antarctic Grim Huon |
geographic_facet |
Antarctic Grim Huon |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_doi |
https://doi.org/10.7916/d8bk1j3b |
_version_ |
1766250969381732352 |