Energy prices were very high during the winter of 2014 over the eastern US as te
ID: 111139 • Letter: E
Question
Energy prices were very high during the winter of 2014 over the eastern US as temperatures were far below normal for that winter. What type of feature in the jet stream would you associate this colder winter weather with?. Select one: . a. Ridge. b. Thermal Flex. c. Thermal Block. d. Trough. e. Baroclinic Zone. What type of weather front is most commonly associated with an ice storm in a mature winter storm?. Select one: . a. Warm Front. b. Arctic Front. c. Occluded Front. d. Dry Line. e. Cold Front. If an ice storm were to coat the roof of my house with 1.5 inches of ice, how much additional weight would my roof be supporting due to coating of ice? My roof is 1900 ft^2 and the density of the ice is 51 lbs/ft^2.. Select one: . a. approximately 1,200 lbs. b. approximate 6,460 lbs. c. approximately 12,000 lbs. d. approximately 64,600 lbs. e. approximately 145,000 lbs.Explanation / Answer
20. Answer d: The 2014 winter was an extreme weather event with unusually cold winters which affected the Canada and United States. This phenomenon resulted due to rapid melting of polar ice and heats up the region quickly which results in temperature difference between Arctic and southern regions to reduce considerably. This causes the jet stream winds to weaken and changes its course and allows the cold air of poles to reach further into the mid latitudes. The instability of jet streams brings cold air south and warm air north. The unusual patch of cold air when combined with the mild winters over eastern United states across Greenland and mostly arctic north of Canada and unusually warm conditions in Alaska. There was a development of trough in the jet stream which allows the chilly arctic air to reach the US.
21. Answer a: The winter storms which are characterised by freezing rain are known as ice storms. These ice storms are mainly formed in north of the warm front in the low pressure system associated with winters. For the formation of an ice storm the temperature of the air near the ground should be below freezing point and this layer of atmosphere is known as surface sub freezing layer. The air immediately above this layer should be above freezing point known as melting layer.
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