A 545-year drought reconstruction for central Oregon

Auteurs :
POHL, K.A.
HADLEY, K.S.
ARABAS, K.B.

Description :
Using a 545-year ponderosa pine (Pinus ponderosa) tree-ring chronology, the AA. examine the drought history of central Oregon to : 1) determine the relationship among drought, ENSO (El Niño Southern Oscillation), and the PDO (Pacific Decadal Oscillation), and 2) compare the climatic sensitivity of ponderosa pine and western juniper (Juniperus occidentalis) to determine their suitability as interchangeable climate proxies. The climatic reconstruction explained 35% of the variance in historical Palmer's Drought Severity Index (PDSI) values and revealed severe drought periods during the 1480s, 1630s, 1700s, and 1930s.


Type de document :
Article de périodique

Source :
Physical geography, issn : 0272-3646, 2002, vol. 23, n°. 4, p. 302-320, nombre de pages : 19, Collation : Illustration, Références bibliographiques : 52 ref.

Date :
2002

Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis