Influence of a complex land surface scheme on Arctic climate simulations

摘要: [1] The regional climate model HIRHAM4 coupled with two different land surface models (ECHAM4-LSM and NCAR-LSM) has been applied over the entire Arctic region. Model results have compared observed monthly soil temperature snow water equivalent from several weather stations in east Siberia west Russia. Our study shows that seasonal cycle of is reasonably well reproduced by both versions model. HIRHAM4-ECHAM4-LSM produces cold bias during winter, use HIRHAM4-NCAR-LSM reduces such because its more advanced schemes. Insulation on ground one main controlling factors temperature, increased association between led to improvement winter temperature. We further established influences schemes their coupling atmospheric conditions not only affect simulations but also remote Ocean regions. Similarly as for present day climate, can significant simulated future climate. These imply an additional uncertainty projections.