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Jones, P.D., Jonsson, T. and Wheeler, D. (1997) Extension to the North Atlantic Oscillation Using Early Instrumental Pressure Observations from Gibraltar and South-West Iceland. International Journal of Climatology, 17, 1433-1450.

has been cited by the following article:

• TITLE: Recent Study of Anomaly of Global Annual Geopotential Height and Global Warming

  AUTHORS: Yehia Yehia Hafez, Mansour Almazroui

  KEYWORDS: Anomaly of Global Geopotential Height, Global Warming, NAO, SOI, El-Nino3.4

  JOURNAL NAME: Atmospheric and Climate Sciences, Vol.4 No.3, July 9, 2014

  ABSTRACT: This paper studies the anomaly of global annual 500 hpa geopotential anomaly and global warming through the period (1950-2011). Anomaly method, linear trend and linear correlation coefficient techniques are referred to identify and describe the correlation between anomaly of global geopotential height field and global surface air temperature, North Atlantic Oscillation (NAO), Southern Oscillation Index (SOI), El-Nino3.4. The results revealed that, the anomaly of global annual geopotential height is completely controlled by global warming and NAO, SOI, El-Nino3.4 during the study period. However, the trend of the global surface air temperature anomaly completely coincides with the trend of 500 hpa geopotential height anomaly. This result uncovers the exist of abnormal weather phenomena through the last decades.