The impacts of ENSO and AO/NAO on the interannual variability of Great Lakes ice cover / Xuezhi Bai, Jia Wang, Cynthia Sellinger, Anne Clites, and Raymond Assel.

Author/creator Bai, Xuezhi
Format Electronic
Publication Info[Ann Arbor, Mich.] : U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, [Great Lakes Environmental Research Laboratory], [2010]
Description1 online resource (44 pages) : illustrations, maps (some color).
Supplemental Contenthttps://purl.fdlp.gov/GPO/gpo29731
Subjects

Other author/creatorWang, Jia, 1957-
Other author/creatorSellinger, Cynthia E.
Other author/creatorClites, Anne H.
Other author/creatorAssel, Raymond A.
Other author/creatorGreat Lakes Environmental Research Laboratory.
SeriesNOAA technical memorandum GLERL ; 152
GLERL contribution ; no. 1561
NOAA technical memorandum GLERL ; 152. ^A570114
GLERL contribution ; no. 1561. ^A427314
Summary The impacts of El Nino 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 Nino events are often associated with least ice cover on the Great Lakes, while the impacts of weak El Nino 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 Nino 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 Nino (La Nina) and +AO (-AO) events, Great Lakes ice cover tends to be least (severe).
General note"November 2010."
General noteTitle from Web page (viewed on June 6, 2011).
Bibliography noteIncludes bibliographical references (p. 41-44).
Technical detailsSystem requirements: PDF reader.
Technical detailsMode of access: World Wide Web.
Source of descriptionDescription based on print version record.
Issued in other formPrint version: Bai, Xuezhi. impacts of ENSO and AO/NAO on the interannual variability of Great Lakes ice cover. [Ann Arbor, Mich.] : U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, [Great Lakes Environmental Research Laboratory, 2010]
GPO item number0208-C-02 (online)
Govt. docs number C 55.13/2:GLERL-152

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