Climate change 2019 Data collected from around the globe

(including the sea ice data of Exercise 23) show that the earth is getting warmer. The generally accepted explanation relates climate change to an increase in atmospheric levels of carbon dioxide (CO2) because CO2 is a greenhouse gas that traps the heat of the sun. A standard source of the mean annual CO2 concentration in the atmosphere (parts per million) is measurements taken at the top of Mauna Loa in Hawaii (away from any local contaminants) and available at ftp://aftp.cmdl.noaa.gov/

products/trends/co2/co2_annmean_mlo.txt.