2015 is so far the world's hottest year - Tucson News Now

2015 is so far the world's hottest year

TUCSON, AZ (Tucson News Now) - Tucson is sitting on it's second warmest year ever, but globally it is the Earth's hottest. The first five months of 2015 has outpaced every other year so far when looking at the global temperatures.

NASA's latest global temperature data has shown most areas on the planet have seen above normal temperatures for January through May. Some spots around the globe and even nationally have been cooler than average, but those cooler spots do little when looking at the global temperature.

This year's temperature is 1.3° above the normal for the first five months. That number is outpacing the second hottest year to date by quite a bit.

India has experienced a heat wave this year that has killed over 2,500 people. It has been so hot in India that roads have melted and cities that rarely hit 100°, have been as hot as 110°.

Part of this problem are carbon emissions produced by human impacts on the planet. Carbon levels in the atmosphere hit 400 parts per million for the first time in 2015 (since measurements are kept). These levels are double than they were before the industrial revolution and expected to peak at 900 parts per million in 2100. That 900 parts per million would be the highest level ever for the globe.

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