The sun shines behind a tree in a valley covered in ground fog near Gadebusch, Germany, 11 November 2016. The weather in North Germany keeps on showing its wintery side with temperatures below 0 degrees Celsius. (Photo by Jens Buettner/EPA)





A general view of Tower Bridge and the city through the fog, seen from The View From The Shard on October 31, 2016 in London, England. (Photo by John Phillips/Getty Images)





Dawn at Holme Pierrepont, Nottinghamshire, UK on November 29, 2016 after one of England’s coldest nights of the autumn. (Photo by Neil Squires/PA Wire)





Fog rises from the warm waters of Yangtze River after a powerful cold front swept across the city on November 23, 2016 in Wuhan, Hubei province, China. (Photo by Feature China/Barcroft Images)





An autumn landscape in Jinchuan County, Sichuan, China on November 21, 2016. (Photo by Xinhua/Barcroft Images)





In this December 4, 2016 photo wind turbines stand out of the fog near Rotenburg, northern Germany. Large parts of northern Germany were under thick fog on Sunday. (Photo by Stefan Rampfel/DPA via AP Photo)





A fisherman sits in a boat on Vltava river during a foggy morning near Prague, Czech Republic, October 23, 2016. (Photo by David W. Cerny/Reuters)





Morning fog rolls across Interstate Highway 5 as commuters in rush hour traffic start the day near Solana Beach, California, U.S. October 31, 2016. (Photo by Mike Blake/Reuters)





A woman walks dogs through morning mist in Quorn, Britain, November 8, 2016. (Photo by Darren Staples/Reuters)





A motor boat sails through a frosty evaporation along the Yenisei River in the Taiga area, with the air temperature at about minus 22 degrees Celsius (minus 7.6 degrees Fahrenheit) outside Krasnoyarsk, Russia, November 14, 2016. (Photo by Ilya Naymushin/Reuters)





A woman walks her dog through early morning mist in Knutsford, northern England December 5, 2016. (Photo by Phil Noble/Reuters)





Photo taken on November 4, 2016 shows the advection fog scene in Xingtai, north China' s Hebei Province. (Photo by Mou Yu/Xinhua/Shutterstock)





Sunrise tree reflection, Syöte National Park, Northern Ostrobothnia, Finland on November 4, 2016. (Photo by Tiina Törmänen/Rex Features/Shutterstoc)





The morning fog hangs over the valleys near Meinerzhagen, Germany, 1 November 2016. (Photo by Federico Gambarini/AFP Photo/DPA)





The sun rises behind skyscrapers amidst the clouds on a foggy morning in Dubai on December 5, 2016. (Photo by Rene Slama/AFP Photo)





In this picture taken on November 28, 2016, a hot-air balloon carrying tourists sails over the archeological site at sunrise in Bagan. Located in central Myanmar, Bagan is home to more than 2,000 ancient Buddhist monuments deeply revered in the Buddhist-majority nation and is one of the country's most popular tourist destinations. (Photo by Dale De La Rey/AFP Photo)