The Super La Nina and the Coming Winter
It is common for the jetstream to behave this way when the sun is in the solar minimum, such as it has been for the last three years. We are emerging from the minimum, but the sunspot numbers are continuing to be very low. Some solar experts say this next sunspot maximum may be one of the weakest in 200 years. As a result, the tendency for the jetstream to blow over parts of the Earth with little month-to-month variability may continue this year. That would result in continued extremes of temperature. The difference would be this time cold areas would be even colder due to the oncoming super La Nina and the falling global temperature.
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.
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.
The current La Nina is coming on stronger than any in decades. The world is demanding more and more energy to fuel growth even in hard economic times. This winter may test the world energy supplier’s ability to provide it. The resulting increase in demand could produce a spike in energy costs. This could bring more hardship to people who are suffering through this long and deep recession. It remains to be seen if this La Nina equals or exceeds the super La Nina of 1955/56. Right now El Nino’s colder sister is on the fast track to generate more temperature extremes and a very cold winter in some parts of the world.