Directly contradicting President Donald Trump, U.S. intelligence agencies told Congress on Tuesday that North Korea is unlikely to dismantle its nuclear arsenal, that the Islamic State group remains a threat and that the Iran nuclear deal is working. The chiefs made no mention of a crisis at the U.S.-Mexican border for which Trump has considered declaring a national emergency.Let's all remember what the orange one said:
And:Just landed - a long trip, but everybody can now feel much safer than the day I took office. There is no longer a Nuclear Threat from North Korea. Meeting with Kim Jong Un was an interesting and very positive experience. North Korea has great potential for the future!— Donald J. Trump (@realDonaldTrump) June 13, 2018
And:We have defeated ISIS in Syria, my only reason for being there during the Trump Presidency.— Donald J. Trump (@realDonaldTrump) December 19, 2018
And then there's this from the orange vulgarity:The Iran Deal is defective at its core. If we do nothing, we know what will happen. In just a short time, the world’s leading state sponsor of terror will be on the cusp of acquiring the world’s most dangerous weapons.... pic.twitter.com/58qwBLzxIH— Donald J. Trump (@realDonaldTrump) May 8, 2018
Waming? Oh well, here's what the science says:In the beautiful Midwest, windchill temperatures are reaching minus 60 degrees, the coldest ever recorded. In coming days, expected to get even colder. People can’t last outside even for minutes. What the hell is going on with Global Waming? Please come back fast, we need you!— Donald J. Trump (@realDonaldTrump) January 29, 2019
But how is global warming to blame [for the shifting polar vortex]?Sadly, none of this matters to the current occupant of the Oval Office.
The answer is simple: because the phenomenon that causes the polar vortex to break down is known as sudden stratospheric warming, where the upper layers of the atmosphere increase in temperature by approximately 30–50 °C (54–90 °F) over the span of only a few days. The fact that there are land masses located where they are in the northern hemisphere means that as those land temperatures increase, they transport their heat to even more northern latitudes.
The exact details of how this works are complex, but the explanation is simple: warmer land temperatures, particularly in northern North America and northern Eurasia, allow more heat to be transported into the Arctic stratosphere. A warmer Earth makes sudden stratospheric warming events more likely and more frequent. And those events destabilize the polar vortex, bring cold air down into the mid-latitudes, and cause the extreme weather we're experiencing right now.