Super La Niña
Looks like world weather is about to head into a very cold pattern : A super La Nina is developing. Historically, these strong La Nina events drop the Earth’s average temperature around one degree Fahrenheit, and the drop comes quickly. As a result, some of the same places that had record heat this summer may suffer through record cold this winter. La Nina is the lesser-known colder sister of El Nino. La Nina chills the waters of the tropical Pacific Ocean, and in turn cools the entire planet for one to two years or more. This chilling has the potential to bring bone-numbing cold to many parts of the world for this and the following winter. As a result, world energy demand may spike in the next one to two years as much colder weather hits many of the major industrial nations. This La Nina appears to be special, at least so far. It is well on its way to being the strongest of these events since the super La Nina of 1955-1956. During that powerful La Nina that lasted two years, the global average temperature fell nearly one degree Fahrenheit from 1953 to 1956. So, in a practical sense, what does this mean for temperatures around the U.S.? Right now the Pacific Ocean is in the beginning of a thirty year cooler spell called the Pacific Decadal Oscillation. There is a strong, potentially super La Nina developing. The sun is still quiet with very few sunspots. When these conditions exist, the first two months of the cold season (December and January) tend to be cold from Montana to Iowa to Florida up to the Great Lakes and most of New England. In addition, temperatures tend to be very cold from central and western Canada to Alaska. China could suffer a bitterly cold December and January if historic temperature patterns are consistent with current conditions. Much of central and western Europe are cold in these situations as well. The second half of the cold season (February and March) typically experiences some changes in the global temperature patterns in these types of winters. For Europe the changes are not good. Bitter cold and snow dominates from western Russia across all of Europe. In other words, what starts as a cold winter in central and western Europe deepens into a severe winter in February and March across all of Europe. The extreme cold eases in southern China but it deepens in the north and northeastern part of the country. In the United States the cold of December and January in the middle and eastern part of the country reverses to mild weather from Texas to Florida up to the Great Lakes and New England. All of the western U.S. is cold and snowy up to the northern Great Plains. What starts as a mild winter out west turns much colder with large amounts of snow while the east gets a break from the cold. By the way, for all the global warming activists out there, you might enjoy this paragraph: The El Nino of the last year pushed the global temperature right back to where it had been in the beginning of 2007. The result has been no net warming or cooling since then. In fact, there has been no net warming or cooling since around 1999. Interestingly, the amount of carbon dioxide in the atmosphere has risen from 369 parts per million to 387 ppm (parts per million) during this time. This amount is above the level of 302 ppm in 1910, when 20th century global temperature started to rise. Despite this significant rise in carbon dioxide since 1999, there has been no “global warming” during this period. An inconvenient truth for Al Gore.
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on October 26, 2010. Filed under