Many of us are wondering about why this summer was unprecedentedly hot.  A lot of wildfires happened, people died, and the temperature didn?t go down even at night. It held records of being the hottest summer in history.  Why is this happening?

Global warming is the main problem.  Global warming has caused climate change and higher temperatures.  It made heat-waves to be twice likely to happen.  It made our summer hotter.  In addition to that, unusual jet stream activity has been happening. It brought heat to the northern side of the Earth, resulting in a huge heat-wave in Europe, Asia, and America. South Korea experienced extreme temperatures that didn?t go down even at night.  People died because of this intense heat.  Its temperature of this summer was hotter than that of India, which left historic records.

(photo = http://www.insight.co.kr/newsRead.php?ArtNo=69627)

Global warming can also control Jetstream winds.  The North Pole warms faster than the Equator and the differences between those two temperatures may lead to slower jet streams.  Jet streams flow to where most of the human populations live, resulting in a warm temperature to everyone on the Earth.  Slower jet stream creates warmer weather and faster jet stream causes unsettled weather.  Global warming causes slower jet streams to form and this led to unusual jet stream activity or extreme heat wave this year.

Scientists were worried that shifts in weather patterns would cause longer and more extremer colder winters, hotter summers, floods, and droughts than before.  Their concerns have been unfortunately true, as everyone over the world is experiencing extremely hottest summer this year.

(photo = The Guardian)