The  impacts of ENSO and AO/NAO on the interannual variability of Great Lakes ice cover

Bai, Xuezhi; Wang, Jia, 1957-; Sellinger, Cynthia E.; Clites, Anne H.; Assel, Raymond A.

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The impacts of ENSO and AO/NAO on the interannual variability of Great Lakes ice cover

2010
By Bai, Xuezhi ; Wang, Jia, 1957- ; Sellinger, Cynthia E. ; ...
Series: NOAA technical memorandum GLERL ; 152

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Personal Author:

Bai, Xuezhi ; Wang, Jia, 1957- ; Sellinger, Cynthia E. ; Clites, Anne H. ; Assel, Raymond A.

Bai, Xuezhi ; Wang, Jia, 1957- ; Sellinger, Cynthia E. ; Clites, Anne H. ; Assel, Raymond A. Less -
Corporate Authors:

Great Lakes Environmental Research Laboratory
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GLERL (Great Lakes Environmental Research Laboratory)

OAR (Oceanic and Atmospheric Research) ; GLERL (Great Lakes Environmental Research Laboratory) Less -
Description:

The impacts of El Niño and South Oscillation (ENSO) and Arctic Oscillation (AO) or North Atlantic Oscillation (NAO) on Great Lakes ice cover were investigated using ice observations for winters 1963-2008 and National Centers for Environmental Prediction (NCEP) reanalysis data. Signatures of ENSO and AO/NAO were found in Great Lakes ice cover. However, the impacts are nonlinear and asymmetric. Strong El Niño events are often associated with least ice cover on the Great Lakes, while the impacts of weak El Niño and La Nina events (of all intensities) on the Great Lakes are marginally significant. Negative AO/NAO events are often associated with severe ice cover, while positive AO/NAO events often lead to lower ice cover. The strong El Niño and negative AO/NAO events account for about 50% of the least and severe ice cover winters on the Great Lakes, respectively. The interference of the effects of ENSO and AO/NAO over the Great Lakes makes the relationships complicated. This may be an important cause of nonlinear and asymmetric responses of the regional climate and Great Lakes ice to ENSO and AO/NAO. Based on the cross composite analysis, it is found that during the simultaneous occurrence of El Niño (La Nina) and +AO (-AO) events, Great Lakes ice cover tends to be least (severe).
Content Notes:

Xuezhi Bai, Jia Wang, Cynthia Sellinger, Anne Clites, and Raymond Assel.

"November 2010."

Format not distributed to depository libraries.

Also available online.

Also available online in PDF via the NOAA Central Library and the Great Lakes Environmental Research Laboratory website.

Includes bibliographical references (pages 41-44).
Keywords:

[+]

Arctic Oscillation Climate Climatic Changes Environmental Aspects Ice On Rivers, Lakes, Etc North Atlantic Oscillation Sea Ice Southern Oscillation
Series:

NOAA technical memorandum GLERL ; 152 ; GLERL contribution ; no. 1561

NOAA technical memorandum GLERL ; 152 ; GLERL contribution ; no. 1561 Less -
Document Type:

Technical Memorandum
Place as Subject:

Great Lakes (North America) ; El Niño Current

Great Lakes (North America) ; El Niño Current Less -
License:

https://creativecommons.org/publicdomain/zero/1.0/
Rights Information:

CC0 Public Domain
Compliance:

Library
Main Document Checksum:

[+]

urn:sha256:1704a796b8b977494dfbf9b3c7cfc665b99b6ff059824386dbad4fbb3772e233
Download URL:

https://repository.library.noaa.gov/view/noaa/11112/noaa_11112_DS1.pdf
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The impacts of ENSO and AO/NAO on the interannual variability of Great Lakes ice cover

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