An analysis of the time scales of variability in centuries-long enso-sensitive records in the last 1000 years View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1994-03

AUTHORS

Henry F. Diaz, Roger S. Pulwarty

ABSTRACT

We document the characteristic time scales of variability for seven climate indices whose time-dependent behavior is sensitive to some aspect of the El Niño/Southern Oscillation (ENSO). The ENSO sensitivity arises from the location of these long-term records on the periphery of the Indian and Pacific Oceans. Three of the indices are derived principally from historical sources, three others consist of tree-ring reconstructions (one of summer temperature, and the other two of winter rainfall), and one is an annual record of oxygen isotopic composition for a high-elevation glacier in Peru. Five of the seven indices sample at least portions of the Medieval Warm Period (~ A.D. 950 to 1250).Time series spectral analysis was used to identify the major time scales of variability among the different indices. We focus on two principal time scales: a high frequency band (~ 2–10 yr), which comprises most of the variability found in the modern record of ENSO activity, and a low frequency band to highlight variations on decadal to century time scales (11

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PAGES

317-342

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf01092422

DOI

http://dx.doi.org/10.1007/bf01092422

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1043614294


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