These data show long term temperature patterns for the Northern and Southern Hemispheres. Dates on the x-axis are the time period pictured, and y-axis values indicate how much warmer (or colder if negative) temperatures were relative to normal. Baseline temperatures are based on averages from 1951-1908 and indicated by the red dashed line at 0. Use time range selector below the x-axis to change the visible temperature range in the plot.
These data show that since the 1980’s temperatures in the Southern Hemisphere are increasing at a lower rate than temperatures int he Northern Hemisphere. This is likely due to the high proportion of ocean in the Southern Hemisphere relative to the Northern Hemisphere.
Data Source:
GISTEMP Team, 2016: GISS Surface Temperature Analysis (GISTEMP). NASA Goddard Institute for Space Studies. Dataset accessed 20YY-MM-DD at http://data.giss.nasa.gov/gistemp/.
+ Hansen, J., R. Ruedy, M. Sato, and K. Lo, 2010: Global surface temperature change, Rev. Geophys., 48, RG4004, doi:10.1029/2010RG000345.