Title

Cross Wavelet Analysis For Retrieving Climate Teleconnection Signals Between Sea Surface Temperature And Forest Greenness

Keywords

Climate change; Hydrometeorology; Precipitation; Sea surface temperature; Teleconnection patterns; Vegetation cover

Abstract

Global sea surface temperature (SST) anomalies have a demonstrable effect on vegetation dynamics patterns throughout the continental U.S. SST variations have been correlated with greenness (vegetation densities) via ocean-atmospheric interactions known as climate teleconnections. Prior research has demonstrated that teleconnections can be used for climate prediction across a wide region even at subcontinental scales. Yet these studies tend to have large uncertainties in estimates by utilizing simple linear analyses to examine the teleconnection relationships. They do not consider nonstationary signals that may exist, nor teleconnection identification at the local scale. This paper establishes short-term (10-year), linear and nonstationary teleconnection signals between SST at the North Atlantic and North Pacific oceans and greenness within the Siamese Ponds Wilderness (Adirondack State Park) located in New York. This pristine forested site was selected to avoid anthropogenic influences that may otherwise mask climate teleconnection signals. Lagged pixel-wise linear teleconnection patterns across anomalous datasets found significant correlation regions between SST and Siamese Ponds Wilderness. Nonstationary signals also exhibit salient co-variations between SST and greenness at biennial and triennial frequencies across consistent oceanic regions indexed within this study, which are found to be consistent with the El Nino Southern Oscillation (ENSO) and North Atlantic Oscillation (NAO). Multiple regression analysis of the combined ocean indices explained up to 40% of the greenness at the site throughout all seasons. These short-term teleconnection signals being identified can certainly improve the understanding of climate change impact on ecosystems across part of the continental U.S. © 2012 SPIE.

Publication Date

12-1-2012

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

8513

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.927631

Socpus ID

84872519065 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84872519065

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