Global warming: towards the warmest year

tendance-maintient-2015-pourrait-memeAlthough Quebecers are not taking advantage of a particularly hot summer this year – with the exception of this week -, heat historical records were shattered in July in the rest of the world, yesterday unveiled the National Oceanic and Atmospheric Administration (NOAA). July 2015 even the hottest months have been registered on the planet 136 years of data.

According to scientists from the US government agency, calculated the average temperature of July all over the world, including the ocean surface, was found to be 0.81 ° C above the average of the twentieth temperatures century. The average temperature of the month was thus highest to be recorded since 1880, is 16,61 ° C. Hardly, however, 0.08 ° C above the previous record established in 1998. Excluding the surface temperature of the oceans, July is found as the sixth warmest July.

So why the time was he so gloomy in Quebec? “This is an average grade René Héroux, Environment Canada meteorologist. There is no requirement that all stations on Earth are compatible with it. In some places, as in the east of the continent, it was colder than normal. It does not take away the results of the analysis. ”

If the trend continues, 2015 could even be the warmest year in modern history. According to the latest report from NOAA, the first seven months of the year were the warmest on record. The average temperature calculated over the entire surface of the globe has exceeded 0.85 ° C the average of the twentieth century, few surpassing the 2010 record.

At the poles, the extent of the ice cap was also 9.5% below the 1981-2010 average in July. She arrives eighth smaller summer ice caps since this data is calculated.

According to René Héroux, there are no specific reasons for the marked warming of this year. “There is nobody who can say without any doubt: this is the reason why eastern North America was colder than the rest of the world. But there are assumptions. For example, with climate change, the temperature difference between the pole and the equator is now less, which affects winds aloft, “he said, reiterating how the climate is very variable, especially in Canada.

Moreover, the first real summer heat wave that hit the whole of Quebec this week is over, says René Héroux. “This weekend, we will have the beautiful summer weather with seasonal temperatures and even a little warmer. Next week, we will come back at temperatures slightly below normal season without either charge. It certainly will not be as hot as this week. ”

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