The correlation of the Southern Oscillation Index (SOI), Pacific Decadal Oscillation (PDO), Pacific North American Oscillation (PNA), Arctic Oscillation (AO), and Scandinavia (SCAND) indices with winter (DJF) temperature and precipitation for the period of 1943 to 2011 was analyzed to study climate change and variability of Yellowknife, NWT. SOI correlated negatively with both temperature (r = -0.14) and precipitation (r = -0.06) causing colder, drier conditions during La Nina and warmer, wetter conditions during El Nino. PDO was shown to have a strong positive correlation with both temperature (r = 0.60) and precipitation (r = 0.33) causing warmer, wetter weather in the positive phase and colder, drier weather in the negative phase. PNA showed the strongest positive correlation for both temperature (r = 0.69) and precipitation (r = 0.37) causing very warm and wet conditions in the positive phase and very cold and dry conditions during the negative phase. AO correlated negatively with temperature (r = -0.04) and positively with precipitation (r = 0.24) causing colder, wetter conditions in the positive phase and warmer, drier conditions in the negative phase. Finally SCAND was shown to have a weak negative correlation with both temperature (r = -0.10) and precipitation (r = -0.18). Sunspot area showed a strong negative correlation (r = -0.30) with temperature and a very weak positive correlation (r = 0.07) with total annual precipitation. Yellowknife’s average annual temperature and precipitation has increased by 2.5°C and 120 mm, respectively throughout the past 69 years.
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J. Laing and J. Binyamin, "Climate Change Effect on Winter Temperature and Precipitation of Yellowknife, Northwest Territories, Canada from 1943 to 2011," American Journal of Climate Change
, Vol. 2 No. 4, 2013, pp. 275-283. doi: 10.4236/ajcc.2013.24027
 J. J. Magnuson, D. M. Robertson, B. J. Benson, R. H. Wynne, D. M. Livingstone, T. Arai, R. A. Assel, R. J. Barry, V. Card, E. Kuusisto, N. G. Granin, T. D. Prowse, K. M. Stewart and V. S. Vuglinski, “Historical Trends in Lake and River Ice Cover in the Northern Hemisphere,” Science, Vol. 289, No. 5485, 2000, pp. 1743-1746.http://dx.doi.org/10.1126/science.289.5485.1743
 A. S. Gagnon and W. A. Gough, “Trends in the Dates of Ice Freeze-Up and Breakup over Hudson Bay, Canada,” Arctic Institute of North America, Vol. 54, No. 8, 2005, pp. 370-382.
 P. Lemke, J. Ren, R. B. Alley, I. Allison, J. Carrasco, G. Flato, Y. Fujii, G. Kaser, P. Mote, R. H. Thomas and T. Zhang, “Observations: Changes in Snow, Ice and Frozen Ground,” In: S. Solomon, D. Qin, M. Manning, Z. Chen, M. Marquis, K. B. Averyt, M. Tignor and H. L. Miller, Eds., Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, 2007, Cambridge University Press, Cambridge, UK, New York, pp. 339-383.
 B. Bonsal and A. Shabbar, “Large-Scale Climate Oscillations Influencing Canada, 1900-2008,” Canadian Biodiversity: Ecosystem Status and Trends 2010, Technical Thematic Report No. 4, Canadian Councils of Resource Ministers, 2011.
 D. J. Leathers, B. Yarnal and M. A. Palecki, “The Pacific/North American Teleconnection Pattern and United States Climate, Part I: Regional Temperature and Precipitation Associations,” Journal of Climate, Vol. 4, No. 5, 1991, pp. 517-528.http://dx.doi.org/10.1175/1520-0442(1991)004<0517:TPATPA>2.0.CO;2
 A. Shabbar, B. Bonsal and M. Khandekar, “Canadian Precipitation Patterns Associated with the Southern Oscillation,” Journal of Climate, Vol. 10, No. 12, 1997, pp. 3016-3027. http://dx.doi.org/10.1175/1520-0442(1997)010<3016:CPPAWT>2.0.CO;2
 C. Deser, “On the Teleconnectivity of the Arctic Oscillation,” Geophysical Research Letters, Vol. 27, No. 6, 2000, pp. 779-782. http://dx.doi.org/10.1029/1999GL010945
 L. D. Hinzman, N. D. Bettez, W. R. Bolton, F. S. Chapin, M. B. Dyurgerov, C. L. Fastie and K. Yoshikawa, “Evidence and Implications of Recent Climate Change in Northern Alaska and Other Arctic Regions,” Climatic Change, Vol. 72, No. 3, 2005, pp. 251-298.http://dx.doi.org/10.1007/s10584-005-5352-2
 J. Screen and I. Simmonds, “Declining Summer Snowfall in the Arctic: Causes, Impacts and Feedbacks,” Climate Dynamics, Vol. 38, No. 11-12, 2012, pp. 2243-2256.http://dx.doi.org/10.1007/s00382-011-1105-2
 M. F. Pisaric, S. M. St-Onge and S. V. Kokelj, “Tree-Ring Reconstruction of Early-Growing Season Precipitation from Yellowknife, Northwest Territories, Canada,” Arctic, Antarctic, and Alpine Research, Vol. 41, No. 4, 2009, pp. 486-496.http://dx.doi.org/10.1657/1938-4246-41.4.486
 J. M. St Jacques and D. J. Sauchyn, “Increasing Winter Baseflow and Mean Annual Streamflow from Possible Permafrost Thawing in the Northwest Territories, Canada,” Geophysical Research Letters, Vol. 36, No. 1, 2009, Article ID: L01401.http://dx.doi.org/10.1029/2008GL035822
 J. Enloe, “Arctic Oscillation (AO),” National Climate Data Center, National Oceanic and Atmospheric Administration, 2013.http://www.ncdc.noaa.gov/teleconnections/ao
 M. Dikpati, P. A. Gilman and G. de Toma, “The Waldmeier Effect: An Artifact of the Definition of Wolf Sunspot Number?” The Astrophysical Journal Letters, Vol. 673, No. 1, 2008, pp. L99-L101.http://dx.doi.org/10.1086/527360
 O. A. Anisimov, “Potential Feedback of Thawing Permafrost to the Global Climate System through Methane Emission,” Environmental Research Letters, Vol. 2, Vol. 4, 2007, Article ID: 045016.http://dx.doi.org/10.1088/1748-9326/2/4/045016