Using wavelet analysis to determine the influence of northern hemisphere teleconnection patterns on sea ice concentrations in the Odden ice peninsula, Greenland Sea

The Odden sea ice peninsula undergoes rapid transformations on a day to day basis, often caused by the influence of strong synoptic weather and larger scale atmospheric teleconnection patterns. By using a Daubechies order 5 level 5 wavelet decomposition on leading modes of the North Atlantic Oscillation (NAO) teleconnection pattern and component loadings derived from a principal components analysis of sea ice concentrations, the authors have found that extended positive modes of the approximated NAO signal lead to a decline of the Odden in many cases. A sharp decline in the Odden sea ice concentration and extent is noticed within two days to one week of an increase in the NAO with ice concentrations diminishing completely after a period of approximately one month of a positive leading mode in the NAO. Comparison of the approximated signals for both the NAO and the Odden ice concentrations and extent are well correlated.