“Lately, the world weather has been especially perplexing, influenced by the cold ocean temperatures of a La Niña current in the equatorial Pacific. For Earth’s land areas, 2007 was the warmest year on record. This year, record cold is more the norm. Global land-surface temperatures so far are below the 20th-century mean for the first time since 1982, according to the National Climatic Data Center. Last month in China, snowstorms stranded millions of people, while in Mumbai, officials reported the coldest day in 46 years. Yet, England basked in its fourth-warmest January since 1914, the British Met Office reported. The crocus and narcissus at the U.K.’s Royal Botanical Gardens at Kew flowered a week earlier than last year — 11 days ahead of their average for the decade and weeks ahead of their pattern in the 1980s. In Prague, New Year’s Day was the warmest since 1775.
“It is difficult to judge the significance of what we are seeing this year,” said Kew researcher Sandra Bell. “Is it a glitch or is it the beginning of something more sinister and alarming?”" (Robert Lee Hotz, Wall Street Journal, March 8, 2008).
Many scientists have pondered this question, as if they did not know the answer, but it is a straightforward application of thermodynamics.
A basic theorem of equilibrium thermodynamics, the EQUIPARTITION OF ENERGY theorem, says that the same amount of energy should be present in all degrees of freedom into which energy can spill. In the case of meteorology, this says that only one-third of the energy should go into heat (and everybody focuses on the augmentation of temperature). Now, of course, since the energy enters the system as heat, non equilibrium thermodynamics imposes more than one-third of the energy will be heat. As time goes by, the other two degrees of freedom, potential energy (represented as the gradients of pressures) and dynamics (wind speed and vast movements of air masses of varying temperatures and/or pressure) will also store energy (thus heat will be transformed in all sorts of weather weirdness: heat, cold, high and low pressures, wind, and big moves of big things).
As cold and warm air masses get thrown about, the variability of temperatures will augment all over. In other words, record snow and cold in the Alps and record warmth simultaneously in England is a manifestation of the equipartition of energy theorem applied to the greenhouse warming we are experiencing. It is not mysterious at all, and brutal variations such as these, including sudden cold episodes, are to be expected, as more and more energy gets stuffed in the planetary climate, and yanks it away from its previous equilibrium.
Wind speed augmentation have already have a spectacular effect: by shaking the waters of the Austral ocean with increasingly violent waves, carbon dioxyde is being removed as if out of a shaken carbonated drink. Thus the Austral ocean is now a net emitter of CO2.
Thus the observed variations are the beginning of something more sinister and alarming. Climate change is changing speed. Up.
Patrice Ayme
Patriceayme.com
Patriceayme.wordpress.com.
Tags: climate change, equipartition of energy., wild temperature fluctuation
