Is the Polar Vortex Affected by Climate Change?
You may have heard a climate change skeptic point to a cold snap as proof that the planet isn't actually warming. Proponents, however, note that climate change may actually be contributing to distortions of the polar vortices, and the sudden plunges in temperature that those distortions cause.
Here's the possible explanation. Scientists have observed that more and more Arctic sea ice is melting during the summer months. As the ice melts, the Arctic Ocean warms, and radiates that excess heat back to the atmosphere in winter. Because that heat somewhat reduces the contrast between the Arctic air and the atmosphere in regions farther south, it reduces the intensity of the winds that form the barrier between the two areas. That, in turn, weakens and disrupts the polar vortex. That hypothesis is supported by data taken over the past decade, which shows that in years when a lot of Arctic sea ice disappears, the vortex has a greater tendency to weaken [source: Fischetti].
Not everyone, it should be mentioned, embraces the notion that Arctic sea ice changes influence weather patterns elsewhere [source: Samenow]. But if it is true, the particularly scary part of that model is that while the amount of Arctic sea ice varies from year to year, overall it's been decreasing in recent years, and climate scientists' forecasts call for it to vanish even more. That could mean that we may experience more distortions of the polar vortex, and the extreme weather that accompanies them, in years to come [source: Fischetti].
Last editorial update on Jan 29, 2019 10:54:57 am.
Author's Note: What's a polar vortex?
I'm not a meteorologist or a climate scientist, but by virtue of having lived in the eastern U.S. for most of my life, I'm pretty familiar with really cold weather. The most extreme cold snap I think that I've ever seen, however, was a sudden ice storm in New York City in January 1994, which turned most of the Upper West Side into the equivalent of a hockey rink and brought traffic to a standstill. Since it was impossible to do anything productive, I spent the afternoon hanging out in a coffeehouse with some friends who normally would have been rushing from one meeting or project to another. So it all worked out OK.
- American Meteorology Society. "Polar Vortex." Ametsoc.org. Jan. 30, 2014. (Feb. 16, 2014) http://glossary.ametsoc.org/wiki/Polar_vortex
- Duke, Alan. "Frigid Air from the North Pole: What's this polar vortex?" CNN. Jan. 6, 2014. (Feb. 16, 2014) http://www.cnn.com/2014/01/06/us/polar-vortex-explained/index.html
- Erdman, Jon. "What's a Polar Vortex? The Science Behind Arctic Outbreaks." Wunderground.com. Jan. 6, 2014. (Feb. 16, 2014) http://www.wunderground.com/news/polar-vortex-plunge-science-behind-arctic-cold-outbreaks-20140106
- Fischetti, Mark. "What Is This "Polar Vortex" That Is Freezing the U.S.?" Scientific American. Jan. 6, 2014 (Feb. 16, 2014) http://blogs.scientificamerican.com/observations/2014/01/06/what-is-this-polar-vortex-that-is-freezing-the-u-s/
- Freedman, Andrew. "Forget the Polar Vortex: January Wasn't That Cold." Mashable.com. Feb. 13, 2014. (Feb. 16, 2014) http://mashable.com/2014/02/13/no-polar-vortex-january-wasnt-cold/
- Grow, Rick. "Sudden stratospheric warming: could it lead to a very cold January in D.C.?" Washington Post. Dec. 31, 2013. (Feb. 16, 2014) http://www.washingtonpost.com/blogs/capital-weather-gang/wp/2013/12/31/sudden-stratospheric-warming-could-it-lead-to-a-very-cold-january-in-d-c/
- Herwick, Edgar B. III. "The Polar Vortex is Nothing New." Wgbhnews.org. Jan. 7, 2014. (Feb. 16, 2014.) http://wgbhnews.org/post/polar-vortex-nothing-new
- Kolstad, Erik W., Tarjei Breiteig and Adam A. Scaife. "The association between stratospheric weak polar vortex events and cold air outbreaks in the Northern Hemisphere." Quarterly Journal of the Royal Meteorological Society. April 2010. (Feb. 16, 2014) http://www.academia.edu/223963/The_association_between_stratospheric_weak_polar_vortex_events_and_cold_air_outbreaks_in_the_Northern_hemisphere
- Limbaugh, Rush. "Left Creates "Polar Vortex" to Make You Think Winter is Caused by Global Warming." Rushlimbaugh.com. Jan. 6, 2014. (Feb. 16, 2014) http://www.rushlimbaugh.com/daily/2014/01/06/left_creates_polar_vortex_to_make_you_think_winter_is_caused_by_global_warming
- Living Age. "Air Maps." Living Age. October-December 1853. (Feb. 16, 2014) http://books.google.de/books?id=Df4vAAAAYAAJ&pg=PA430&dq=%22polar+vortex%22&redir_esc=y#v=onepage&q=%22polar%20vortex%22&f=false
- Mooney, Chris. ""Breathtaking": The White House Releases Its Climate Heavy Hitter on the Polar Vortex." Mother Jones. Jan. 15, 2014. (Feb. 16, 2014) http://www.motherjones.com/blue-marble/2014/01/john-holdren-video-polar-vortex
- National Atmospheric and Oceanic Administration. "January 21, 1985 – Coldest Day of the 20th Century in Eastern North Carolina." Noaa.gov. undated. (Feb. 16, 2014) http://www.erh.noaa.gov/mhx/EventReviews/19850121/19850121.php
- NASA. "Our Changing Atmosphere: Discoveries from the EOS Aura." NASA. 2010. (Feb. 16, 2014) http://books.google.com/books?id=09OpNJslodYC&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q=%22polar%20vortex%22&f=false
- NASA. "Stratospheric Polar Vortex Influences Winter Cold, Researchers Say." Nasa.gov. Dec. 1, 2001. http://earthobservatory.nasa.gov/Newsroom/view.php?id=22082
- NASA. "What is the Polar Vortex?" Nasa.gov. Sept. 25, 2013. (Feb. 16, 2014) http://ozonewatch.gsfc.nasa.gov/facts/vortex_NH.html
- National Snow and Ice Data Center. "All About Arctic Climatology and Meteorology." Nsidc.org. 2013. (Feb. 16, 2014) http://nsidc.org/cryosphere/arctic-meteorology/weather_climate_patterns.html
- National Weather Service Forecast Office. "35 Years Ago - Winter of 1976-1977 Brings the Coldest Temperatures Ever to the Area." Noaa.gov. Jan. 26, 2012. (Feb. 16, 2014) http://www.erh.noaa.gov/iln/climo/summaries/winter76-77/cold1977.php
- Noyes, Matt. "The term polar vortex has been around for over 50 years. The actual polar vortex for about 1.5 billion." Twitter.com. Jan. 7, 2014. (Feb. 16, 2014) https://twitter.com/MattNoyesNECN/status/420598553401368576
- O'Brien, Brendan, and Palmer, Kim. "'Life-threatening' cold bites Midwest, heads east." Reuters, via Bangor Daily News. Jan. 6, 2014. (Feb. 16, 2014). http://bangordailynews.com/2014/01/06/news/nation/life-threatening-cold-bites-midwest-heads-east/?ref=latest
- O'Hanlon, Larry. "Polar Vortex Behind U.S. Cold Blast." Discovery News. Jan. 6, 2014. (Feb. 16, 2014) http://news.discovery.com/earth/weather-extreme-events/polar-vortex-behind-us-cold-blast-140106.htm
- Ostro, Stu, etal. "Deep Freeze: Was the Polar Vortex Really the Cause?" Weather.com. Jan. 22, 2014. (Feb. 16, 2014) http://www.weather.com/news/weather-winter/polar-vortex-facts-and-myths-20140107
- Rafferty, John P. "Polar Vortex." Britannica.com. Jan. 20, 2014. (Feb. 16, 2014) http://www.britannica.com/EBchecked/topic/467030/polar-vortex
- Rutgers Today. "Is Global Warming Behind the Polar Vortex?" News.rutgers.edu. Jan. 30, 2014. (Feb. 16, 2014) http://news.rutgers.edu/hot-topic/global-warming-behind-polar-vortex/20140129#.UwFnf_ldV8E
- Samenow, Jason. "Arctic warming and our extreme weather: no clear link new study finds." Washington Post. Aug. 19, 2013. (Feb. 16, 2014) http://www.washingtonpost.com/blogs/capital-weather-gang/wp/2013/08/19/arctic-warming-and-our-extreme-weather-no- clear-link-new-study-finds/
- Serreze, Mark. "What is the Polar Vortex?" Nsidc.org. Jan. 10, 2014. (Feb. 16, 2014) http://nsidc.org/icelights/2014/01/10/what-is-a-polar-vortex/
- Walsh, Bryan. "Climate Change Might Just Be Driving the Historic Cold Snap." Time. Jan. 6, 2014. (Feb. 16, 2014)http://science.time.com/2014/01/06/climate-change-driving-cold-weather/
- Yulesman, Tom. "Move Over Polar Vortex: A Tale of Two Extreme Storms." Discover. Feb. 14, 2014. (Feb. 16, 2014) http://blogs.discovermagazine.com/imageo/2014/02/14/tale-of-two-extreme-storms/#.UwEbLvldV8E