Arctic water vapor anomalies based on monthly CESM experiment

This dataset shows the internal anomalies of Arctic water vapor and other related variables by using the monthly data from historical/RCP8.5 experiments based on the Community Earth System Model (CESM), which has 40-member runs during 1920-2005/2006-2050. To characterize internal variability, we remove the ensemble mean (radiative forced component) and focus on the residual (internal) variability. Then we use a 10-year low-pass Lanczos filter to extract decadal variability, and the difference between the internal variability and its decadal component is treated as interannual compoent.