Variability common to first leaf dates and snowpack in the western conterminous United States

Earth Interactions
By: , and 

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Abstract

Singular value decomposition is used to identify the common variability in first leaf dates (FLDs) and 1 April snow water equivalent (SWE) for the western United States during the period 1900–2012. Results indicate two modes of joint variability that explain 57% of the variability in FLD and 69% of the variability in SWE. The first mode of joint variability is related to widespread late winter–spring warming or cooling across the entire west. The second mode can be described as a north–south dipole in temperature for FLD, as well as in cool season temperature and precipitation for SWE, that is closely correlated to the El Niño–Southern Oscillation. Additionally, both modes of variability indicate a relation with the Pacific–North American atmospheric pattern. These results indicate that there is a substantial amount of common variance in FLD and SWE that is related to large-scale modes of climate variability.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Variability common to first leaf dates and snowpack in the western conterminous United States
Series title Earth Interactions
DOI 10.1175/2013EI000549.1
Volume 17
Year Published 2013
Language English
Publisher American Meteorological Society
Contributing office(s) National Research Program - Central Branch
Description Paper 26: 18 p.
Country United States