Investigation of regional climate models' internal variability with a ten-member ensemble of 10-year simulations over a large domain

摘要: Previous investigations on regional climate models’ (RCM) internal variability (IV) were limited owing to small ensembles, short simulations and domains. The present work extends previous studies with a ten-member ensemble of 10-year performed the Canadian Regional Climate Model over large domain covering North America. results show that IV has no long-term tendency but rather fluctuates in time following synoptic situation within domain. mean-sea-level pressure (MSLP) screen temperature (ST) annual cycle larger values spring, which differs from studies. For precipitation (PCP), shows clear summer, as previously reported. climatology for MSLP ST well-defined spatial distribution northeast domain, near outflow boundary. A comparison summer transient-eddy variance reveals is close its maximum region Same analysis PCP reaches most parts except western side inflow Finally, each simulation showed may have significant impact some variables.