The World Meteorological Organization is saying that 2015 will be the hottest year ever because of climate change. Not only that but next year could be even worse if things don’t change drastically, says the WMO report.

Part of the issue making this the hottest year ever is the pattern for the weather caused by El Niño. The WMO is saying temperatures could go up five degrees Celsius or even further.

Yet, if the world leaders meeting in Paris on Monday are able to reach a consensus on how to handle this emerging situation, the world temperatures may still be the hottest year ever, but it could be possible to keep the rise down to two degrees Celsius, which is the same as close to four degrees Fahrenheit.

2015 hottest year ever could be temperature milestone

According to what is known about the rise of climate change, scientists say that some scenarios predict the temperatures could go down if there is a large reduction in the world’s greenhouse gas production while other scenarios show temperatures could rise five or six degrees if the world continues doing things as they are now.

According to the WMO, the world’s median surface temperature in 2015 could get to what would be considered a significant milestone and get to one degree Celsius higher than the temperatures were in pre-industrial times. All of this would be due to global warming caused by humans, as well as the El Niño weather patterns.

El Niño responsible for fifth of temperature rises predicted

El Niño is said to be what is likely responsible for about a fifth of the expected temperature rises, but studies showed the temperatures were still going up no matter if El Niño has taken into consideration or not.

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El Niño is a natural weather pattern that causes warm temperatures on the surface of the Pacific Ocean. It causes extreme hot weather patterns and some droughts and floods in several parts of the world. El Niño is the strongest in the timeframe between the months of October and January.

World temperature changes over the years

The WMO study estimate showed that between those active months, the average surface temperature in the world was 0.73 degrees Celsius over the averages between 1961 and 1990. It was also about one degree Celsius over pre-industrial temperatures during the years 1880 to 1899.

The study warns that 2015, as well as possibly 2016, could be the hottest year ever on record.