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There has been considerable alarm in recent years about the shrinking arctic ice cap. Some shippers look forward to actually using the "northwest passage" for shipping to cut off a few thousand miles versus going through the Panama Canal or around Africa, while others fear the rising sea levels associated with glacial melting. Polar bears who hunt for seals on polar ice have become the poster representatives of those who worry about ice caps melting. The lead chart above shows exactly the problem that has some climatologists worried. Polar ice area varies on a seasonal schedule, usually peaking with maximum area in March, and reaching its seasonal minimum in September. The last several summers have seen less and less ice area, which is the trend that has some worried. But what is interesting is that this is not a phenomenon of generalized rising average temperatures. The summer minimum for ice area is shrinking, but the wintertime maximum has been remaining fairly steady. Usually the max is in March and the minimum is in September. So here are the plots of the ice area in just those two months, to help us see the difference in trends: Those who are alarmed about arctic ice melting are focused on the summer minimum, and the recent literature usually ignores the March maximum ice area. This data on arctic ice area has profound implications for climate theory, and accordingly for policy decisions, but why should it matter to those of us concerned about the economy? The answer lies in the variation that we see in the March ice area maximum. This is the pearl that can be found in these data on ice area. I have not heard anyone else talk about this, and I discovered it myself by digging into the data just because I was curious what it might show. The ice area maximum that occurs typically in March is inversely correlated to economic activity. That's a big concept, so you should take a moment to let it sink in. Putting it more simply, more wintertime arctic ice area is a bad thing for the economy. Less winter ice is good, at least from a GDP perspective. To help us see that relationship, I have plotted a comparison of GDP growth to ice area in this next chart. The key point for understanding this chart is that the plot of arctic ice area has been inverted to better help see the relationship. What this chart reveals is that more ice (i.e. a lower inverted plot reading) is associated with slower GDP growth. And shrinking winter ice area (higher inverted chart plot) is associated with faster GDP growth rates. The data are for annual GDP rates, and so while we already have the March 2013 arctic ice reading, we don't yet have the 2013 annual U.S. GDP growth rate value yet. But the fact that the March 2013 arctic ice area was greater (lower on the chart) than March 2012 implies a slower posting for 2013 U.S. GDP growth. The correlation gets even better when we look at "world" GDP instead of just U.S. GDP: Once again the correlation is not perfect, but it is nevertheless clearly evident. More winter ice is bad for GDP growth, while less winter ice is associated with stronger world GDP data. The World Bank still has not yet published the GDP growth data for 2012, let alone 2013. The implication of this relationship is that the world GDP numbers yet to be published for 2012-13 should be somewhat disappointing, at least to those who like GDP growth. Those who like ice may have a different viewpoint. The linkage between arctic ice area and GDP is likely agricultural in nature. Colder and longer winters that produce a larger maximum ice area tend to make things more difficult for farmers, potentially impacting nationwide or worldwide crop production. So what is a market analyst to do, especially when concerned about the health of the planet and the human race? It is indeed a perplexing question. More global warming means more human suffering, we are told, resulting from presumably rising sea levels and greater assumed storminess. But that same global warming seems to mean greater GDP growth. So if one simultaneously roots for both cooler global temperatures and higher global GDP growth, the data suggest that those two objectives are at odds with each other. So would the human suffering that would result from an economic slowdown (lower GDP growth) be perceived as being greater than the potential human suffering from presumably rising sea levels? That's not something these data can model. But it all does give one pause when considering the various claims about what continued arctic ice melting might mean, assuming that one pays attention to the actual data.
Ataques de avispas gigantes dejan al menos 42 muertos en ChinaPublicado: 3 oct 2013 | 13:26 GMTUna inusual ola de ataques de avispas gigantes ha causado 42 muertos y más de 1.590 heridos en la provincia china de Shaanxi en los últimos tres meses, informa la agencia oficial Xinhua.Esta provincia, situada en el centro-este del país, mantiene activada la alerta desde finales de septiembre, cuando se evidenció el incremento de las muertes con respecto a años anteriores en la época en la que habitualmente se registran sucesos de este tipo.La causa del aumento de estos ataques aún es desconocida, aunque la agencia señala que las altas temperaturas registradas en los dos últimos meses han vuelto a los insectos más activos.
Avispones del tamaño de un dedo pulgar aterrorizan a los chinos... y a las abejasUna inusual ola de ataques de avispones del tamaño de un pulgar ha causado en China central al menos 28 muertes y ha dejado 400 heridos en los últimos meses, informan las autoridades.La mayoría de los ataques se han registrado en la provincia de Shaanxi. Una de las víctimas sufrió una insuficiencia renal aguda después de que lo picaran los avispones, que lo persiguieron unos 200 metros. Otra víctima, una mujer de 55 años, denunció haber sido picada más de 200 veces, después de lo cual permaneció hospitalizada casi un mes.El protagonista de estos ataques es el avispón asiático gigante (Vespa mandarinia), que puede llegar a medir más de 5 centímetros de largo, mientras que su aguijón alcanza los 6 milímetros y contiene una potente neurotoxina. Los avispones son capaces de cubrir una distancia de 100 kilómetros en un solo día y de alcanzar una velocidad de hasta 40 kilómetros por hora.La cifra de muertos por ataques de avispas ha superado dos veces el promedio anual de 2002-2005, según la policía y médicos locales. ¿A qué se debe esta proliferación? Varios expertos la achacan al calentamiento global, ya que el promedio de la temperatura invernal en la provincia afectada se ha incrementado 1,10 grados centígrados en unos pocos años, lo que facilita que más avispones sobrevivan en invierno. El fenómeno no solo afecta a China. De hecho, el aumento de las temperaturas parece estar detrás de la propagación de una especie de avispones chinos, la vespa velutina, en Corea del Sur y en Europa. La principal presa del avispón chino son las abejas, y a medida que el calentamiento global vuelve el ambiente cada vez más hospitalario para los avispones, son más las abejas que mueren http://actualidad.rt.com/actualidad/view/93941-abejas-extincion-apocalipsis-agricola-eeuu , informa el portal Quartz.http://qz.com/128636/thank-you-global-warming-giant-hornets-are-killing-dozens-in-china-and-eating-bees-across-europe/Esa especie no se ha extendido fuera de Asia, aunque se ha confirmado su presencia puntual en EE.UU. Si el avispón asiático se extendiera por EE.UU., podría representar una amenaza aún más grande que el avispón chino. No sólo son cinco veces más grande que este, sino que sus enormes mandíbulas les permiten decapitar abejas rápidamente: un avispón asiático gigante puede matar 40 abejas por minuto. Un enjambre de menos de 30 avispones puede acabar con una colonia de 30.000 abejas en apenas unas horas.
NW China hornet attacks leave 42 deadBEIJING, Oct. 3 (Xinhua) -- An unusual spate of hornet attacks in northwest China's Shaanxi Province has injured a total of 1,640 people, 42 of them fatally, the top health authority said on Thursday.Among the people injured in the attacks, which began in July, 206 are receiving treatment in hospital, the National Health and Family Planning Commission said, calling for utmost efforts in treating patients and minimizing the number of casualties.A guideline for diagnosing and treating hornet attack victims has been issued while local agencies have been urged to follow due procedures and ensure patients get early treatment.The commission asked local health agencies to coordinate their hornet attack responses with agricultural, forestry and firefighting departments, including culling hornets in populous areas.Three medical experts in critical care medicine, infectious disease and nephrology have been sent to the field to aid the treatment of critical patients, the commission said.The cause for the attacks has not been officially ascertained.Huang Rongyao, an insect control expert at the Forestry Bureau of Ankang City, the worst-hit by the hornets, attributed the trend to local vegetation growth, which has increased the area populated by hornets, and two months of continuous hot weather, which has made the insects more active.Hua Baozhen, a professor of entomology at Northwest Agriculture & Forestry University, meanwhile believes the main cause is a decrease in the number of the hornets' natural enemies, including spiders and birds, a result of ecological changes.Elsewhere, south China's Guangxi Zhuang Autonomous Region also reported human injuries from hornet bites between July and September.
por levantar el hilo, que paice que vibra en otros; el que tenga aguela que le pregunte;en 1900, 1920, ó 1940, el regimen de lluvias, o de nieves, o los ciclos agricolas no eran ni apaicidos; y no me vengan con que la memoria engaña, si la nieve llegaba a la tripa del caballo, era que llegaba; y desde entonces solo han subido las medias unas pocas decimas;
..... El clima cambia, cojones, en multitud de ciclos, largos y cortos, .....
Mucho me temo que lo que hay detrás de la esfinge es la torre Eiffel.Fotos del Egipto nevado que en realidad son un fraude...http://viralizzer.com/share/kurioso/1486-fotos_del_egipto_nevado_que_en_realidad_son_un_fraude/1