Arctic Storm Activities in Ensemble Simulations by the HIRHAM-NAOISM Regional Coupled Climate Model

Abstract

Arctic storm activities have shown intensification during recent decades, which may have contributed to or caused extreme climate events. We examined Arctic storm activities in 10 ensemble simulations by using the Arctic regional coupled climate model HIRHAM-NAOSIM. Storm identification and tracking algorithm (Zhanget al., 2004) were employed to derive intensity, location and duration of each storm. Arctic regional storm climatology and variability were constructed and compared with the same statistics derived from the ERA-interim reanalysis data.