March 100 degree days in Arizona were common until 1910, but have only happened in four years since 1910. The vast majority of hot March weather occurred below 310 PPM CO2.
This is what Arizona looks like today.
March 100 degree days in Arizona were common until 1910, but have only happened in four years since 1910. The vast majority of hot March weather occurred below 310 PPM CO2.
This is what Arizona looks like today.