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Karman
Det är ju omöjligt att diskutera med dig. Du är rabiat. Är det varmt några veckor, beror det på global warming. Är det kallt några veckor, beror det också på global warming.
Ditt sätt att resonera och tänka påminner om nyfrälsta som jag träffade i min ungdom.
Nej , jag är verkligen inte rabiat. Jag tänkte förstås också att det här var omöjligt. Jag försöker se fakta och verklighet som de är och jag lyssnar på vad experterna säger. Så här förklarade man kylan över USA nyligen:
När vi värmer Arktis så pressas kyla från Arktis söderut.
Why cold weather doesn’t mean climate change is fake
First, it's important to understand the difference between climate and weather. Climate is defined as the average weather patterns in a region over a long period of time. It's the difference between Europe's temperate and Mediterranean zones versus the harsh cold conditions of the Arctic tundra. Each of these climate regions experiences day-to-day fluctuations in temperature, precipitation, air pressure, and so on—daily variations known as weather.
How warming can lead to cooling
When the term global warming was popularized a few decades ago, it referred to the phenomenon of greenhouse gases trapping heat in the atmosphere and warming the average temperature of the planet. Though record high temperatures in many places have been one impact of this decades-long shift, scientists now understand that an atmosphere changed by rising levels of gases like carbon and methane leads to more climate changes than just warming.
Scientists believe Earth will experience more extreme, disastrous weather as the effects of climate change play out.
As more Arctic air flows into southern regions, North America can expect to see harsher winters. That was the conclusion of a study published in 2017 in the journal Nature Geoscience. It found a link between warmer Arctic temperatures and colder North American winters. A separate study published in March of last year in the journal Nature Communications found the same link but predicted the northeastern portion of the U.S. would be particularly hard hit.
“Warm temperatures in the Arctic cause the jet stream to take these wild swings, and when it swings farther south, that causes cold air to reach farther south. These swings tend to hang around for awhile, so the weather we have in the eastern United States, whether it’s cold or warm, tends to stay with us longer," said study author Jennifer Francis in a press release.
https://www.nationalgeographic.com/environment/2019/01/climate-change-colder-winters-global-warming-polar-vortex/