NASA has released their global average temperature update for the month of November. It’s hot
For the climatological year (December through the following November), 2016 comes in the hottest on record by a sizeable margin:
The calendar year isn’t complete yet, but the year-so-far average shows that it too will come in as hottest on record — for the third year in a row:
Sea ice in the Arctic dipped very low, the lowest November value on record:
The year-so-far average anomaly is the lowest on record:
Down south in the Antarctic, sea ice had actually been expanding recently. But this November it not only hit a record low, it hit a truly stunning record low:
Perhaps the south-pole sea ice has reversed course, but this extreme, however extreme, isn’t enough (yet) to establish a trend.
The reason for temperature increase, including the dramatic decline of Arctic sea ice, is the increase of greenhouse gases in the atmosphere — and the reason for that is us. The two most important man-made greenhouse gases are carbon dioxide (CO2):
and methane (CH4):
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