It may have been locally hot or cool where you live in the month of September, but globally speaking it was another scorcher. This week, NASA’s Goddard Institute of Space Science released its latest data on average global temperature to include measurements for September 2010 (data go back to January 1880). The Goddard Institute has two measures of global temperature: one including direct temperature measurements over land only and the other including direct measurements over both the land and the sea. Over the Earth’s landmasses, September 2010 was the 3rd hottest September on record. Over both land and ocean, September 2010 ranks as the fourth hottest September on record.
This is a description of global weather; let’s put the data in the long-term context of climate change. In order from hotter to not quite as hot, the following are the top ten hottest Septembers on record in the Goddard Institute’s data over land and sea:
You’re reading that correctly: the ten past Septembers have been the 10 hottest Septembers on record. And in order from coldest to not quite as cold, the following are the top ten coldest Septembers on record in the Goddard Institute data:
The past month’s temperature readings are weather; they are part of an undeniable climate trend of global warming.