“…Hydroclimatic changes in the high‐latitude region, including both surface air temperature ( T ) and the water variables of precipitation ( P ), evapotranspiration ( ET ), and runoff ( R ), can lead to ecosystem regime shifts (Karlsson et al, ; Wrona et al, ); infrastructure damages (Instanes et al, ); and critical changes to water resources (Nilsson, Berner et al, ), water security (Bring, Jarsjö, & Destouni, ), and health (Daley et al, ; Evengard et al, ; Martin et al, ). Furthermore, local changes propagate with R and ET to affect the ocean (Carmack et al, ), atmosphere (Vihma et al, ), vegetation (Pearson et al, ), sedimentation rates and fish migration (Chalov et al, ), carbon releases from thawed permafrost (Schuur et al, ), and ocean‐biomass production by waterborne nutrient loading from land to sea (Prowse et al, ).…”