Experimental reconstruction of monsoon drought variability for Australasia using tree rings and corals

Publication Type  Journal Article
Year of Publication  2008
Authors  D'Arrigo, R.; Baker, P.; Palmer, J.; Anchukaitis, K.; Cook, G.
Journal Title  Geophysical Research Letters
Volume  35
Issue  12
Pages  -
Journal Date  Jun 25
ISBN Number  0094-8276
Accession Number  ISI:000257308500006
Key Words  tree-rings; sea-surface temperature; enso teleconnections; oscillation; anomalies; index

An experimental reconstruction uses three well-dated, annually-resolved proxies from Australasia (0-40 degrees S, 95 - 155 degrees E) to provide large-scale information on Sep-Jan Australasian monsoon variability based on the Palmer Drought Severity Index (PDSI) for 1787-2002. The proxies are: (1) a ring width chronology of Callitris intratropica for northern Australia (1847 - 2006); (2) a tree-ring and coral based reconstruction of the Oct-Nov PDSI (1787 - 2003) for Java, Indonesia; and ( 3) a rainfall reconstruction for northeastern Australia (1631 - 2002) based on Great Barrier Reef coral luminescence. All three proxies show considerable explanatory value for reconstructing monsoon rainfall variability over much of Australia and environs, which will improve as additional records become available. The success of this "proof of concept'' experiment largely reflects the highly significant, spatially-coherent correlations between austral spring and summer PDSI, Australasian climate and ENSO.


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URL  <Go to ISI>://000257308500006
DOI  Doi 10.1029/2008gl034393