July is well on its way to becoming the hottest month in history, climatologists say after the heat in North America and the Arctic was warmer than usual. This is the most recent indication that the planet's overall climate is warming and that human activity is making extreme events such as heat waves more likely and intense, say the scientists.
Even if more than a week has passed before the end of the year This month, dozens of experts are already predicting a decline in the current record of July 2017.
"It looks like it's very likely that We'll have the warmest month of all time, "said Brian Brettschneider, a climate researcher at the University of Alaska Fairbanks. (In this case, "ever" means beginning since the beginning of modern records in 1
In July 2017, when the previous record was set, global average temperatures were 2.16 degrees Fahrenheit higher than the average of In the 20th century for the 20th Century, 57.8 degrees Fahrenheit, according to the National Oceanic and Atmospheric Administration, collects climate data and tracks temperature records. This July is expected to slightly exceed average temperatures two years ago, say scientists studying climate patterns.
"Of course we will not know until all the numbers are in there, but we are moving at a good pace to beat this record," said Jack Williams, director of the Center for Climate Change Research at the University of Wisconsin-Madison.
"July is the warmest month of the year worldwide. If this July turns out to be the warmest July (with good results), this is the warmest month we've ever measured on Earth! Michael Mann, climatologist at Pennsylvania State University, tweeted on July 15.
] In an e-mailed Tuesday to NBC News MACH, Mann called the new record "likely" and said there is now a chance of "more than 50/50" that the month reaches a new high temperature heels of another Worrying climate records: Last month was the hottest June ever. According to NASA and NOAA, which independently measure global surface temperatures, global average temperatures last month were 1.71 degrees Fahrenheit above the June 20th-century average of 59.9 degrees Fahrenheit.
Europe suffered from a strong heat wave in late June, reaching the highest temperature ever recorded in France. Last weekend, around 169 million people in the United States were under heat warnings because of temperatures in cities like New York City. Little Rock, Arkansas; and Memphis, Tennessee, rose in the triple digits. And this week another heat wave will hit parts of Western Europe.
While steam temperatures are expected in the northern hemisphere in June and July, Williams' record heat this summer is far from normal.
"The current climate system is like a hit on steroids," Williams said with a baseball analogy. "Today's heat waves will be the normal events of tomorrow."
Mann said recent warming trends are proving the profound impact of climate change on the planet.
"It's part of a troubling pattern of streak-broken records that we've simply shown that they would not occur without climate change," Mann said. "This is just additional confirmation, along with the country's unprecedented extreme weather events In recent years, the effects of climate change are no longer subtle. They stare at us in the face. "
Human activities – mainly burning fossil fuels – release carbon dioxide and other greenhouse gases that store heat in the atmosphere. Rising greenhouse gas emissions are associated with warmer global surface temperatures. According to Climate Central, the world's 10 hottest years have all fallen in the last two decades.
"There are internal fluctuations in the climate system that cause the needle to jump around metaphorically from year to year, but the trend is unmistakable," said Brettschneider.
Unless significant measures are taken to curb greenhouse gas emissions, count Scientists say that global temperatures could rise at least 3.6 degrees Fahrenheit in this century – creating conditions on Earth that have not been seen for more than 2 million years.  "The closest analogies were found in the Pliocene [Epoch]when the sea level was ten feet higher and it was a much warmer world," said Williams. "That was a time before human evolution we align the climate system with states that we know in our social experience – and even in the world Experience of our species – did not see. "
The warmest year since its inception in 2016 was as a naturally recurrent climate, known as El Niño, contributed in part to warmer conditions. According to NOAA, this year from January to June 2017 was the second warmest year of all time.
For Williams, record temperatures are fueling efforts to raise awareness of climate change.
"It is difficult to be a climate scientist and to recognize the trends we are heading for and to try to raise awareness," Williams said. "It feels like a tough fight. At the same time, I think that's the dominant theme of my generation, and it's a fight and a conversation worth running. It's an important job, so we just stay tuned.
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