NEW: Central US Winter Storms February 2021 UPDATED: Arctic Amplification UPDATED: Winter Storm Risk Increase Chart: Land Surface Air Temperature Increase by NCA 4, NOAA NCEI and CICS-NC The chart above shows land surface air temperature using 4 datasets. 1850–2016 temperatures are shown relative to the increase observed from 1976–2005. Go to Site Related Climate Signals Land Surface Temperature Increase Land Ice and Snow Cover Decline Land Surface Drying Increase