Extreme Value Estimation of Beaufort Sea Ice Dynamics Driven by Global Wind Effects

Abstract The purpose of the present study is to investigate extreme values ice drift speed, which are also considered in light magnitude simultaneous wind speed. relationship between speed and studied. long-term data collected by using local subsurface measurements based on acoustic Doppler current profilers (ADCP) Beaufort Sea during period 2006–2017. Upward-looking sonars (ULS) deployed order observe thickness as well identify events that correspond open water conditions. investigated. It found average approximately 2.5% winter season. Estimation studied application conditional exceedance rate (ACER) method. melt season (i.e. summer season) 20%–30% higher than growth season). can be effectively estimated Moreover, obtained multiplying with an amplification factor varies range from 1.7 2.0 season, corresponding increasing return periods 10, 25, 50 100 years.