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Globally, 2017 on Track to Be Second Hottest Year

By Climate Central

Through the end of September, 2017 is the second hottest on record globally. These figures are even more impressive in the absence of an El Niño, which gives a small boost in average global temperatures. This is further evidence that the observed long-term warming of the globe is from the buildup of greenhouse gases in the atmosphere.

This consistent warmth over the past four years has been practically independent of the warming waters of an El Niño. In fact, La Niña years are now warmer than El Niño years from 30 years ago.

Speaking of oceans, they play a critical role in the earth’s longer term temperature, as 93 percent of the energy from human-caused warming is going into the oceans. This means that in addition to more warm days the planet is experiencing a more intense water cycle, which is behind the observed global increase in heavy precipitation.

METHODOLOGY: Top 10 years globally combine the NOAA and NASA monthly globally-averaged temperature data and are based on 1881-1910 baseline to represent total global warming since the early industrial era.