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Northern Hemisphere Modes of Variability and the Timing of Spring in Western North America

Dates

Year
2011

Citation

Ault, Toby R, Macalady, Alison K, Pederson, Gregory T, Betancourt, Julio L, and Schwartz, Mark D, 2011, Northern Hemisphere Modes of Variability and the Timing of Spring in Western North America: Journal of Climate, v. 24, iss. 15, p. 4003-4014.

Summary

Spatial and temporal patterns of variability in spring onset are identified across western North America using a spring index (SI) model based on weather station minimum and maximum temperatures (Tmin and Tmax, respectively). Principal component analysis shows that two significant and independent patterns explain roughly half of the total variance in the timing of spring onset from 1920 to 2005. However, these patterns of spring onset do not appear to be linear responses to the primary modes of variability in the Northern Hemisphere: the Pacific–North American pattern (PNA) and the northern annular mode (NAM). Instead, over the period when reanalysis data and the spring index model overlap (1950–2005), the patterns of spring onset [...]

Contacts

Communities

  • USGS National Research Program

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Provenance

Added to ScienceBase on Tue Apr 23 14:26:21 MDT 2013 by processing file <b>Biotic Response to Climatic Variability and Human Impacts in Arid Lands.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/504216b9e4b04b508bfd336b">https://www.sciencebase.gov/catalog/item/504216b9e4b04b508bfd336b</a>

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1175/2011JCLI4069.1

Citation Extension

citationTypeJournal Article
journalJournal of Climate
parts
typePages
value4003-4014
typeVolume
value24
typeIssue
value15

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