El Hilo del Clima y el Cambio Climático

[Republik]

Republik, usted lee el hilo del hielo en el ártico de Meteored, ¿no?

Sí, es interesante ese foro, lo descubrí mientras buscaba el modo de entender todo este fenómeno. Una vez dí con un foro italiano interesantísimo y muy técnico sobre el tema pero con el trasiego de bookmarks de un cacharro a otro lo he perdido, y es una pena. El tema merece cierta dedicación y seguimiento porque está tan lleno de señales deliberadamente equívocas y de intereses que no es fácil tener las ideas claras, me compro libros y los voy leyendo y sigo foros.

[Barcenitas]

Sobre el cambio climático y el frío en Alemania una posible explicación es la siguiente: cuando aumenta la energía en un sistema caótico como la atmósfera, la turbulencia del sistema se incrementa y las oscilaciones son mayores. Aunque la tendencia es el aumento de la temperatura, el cambio que se percibe más claramente son los fenómenos atmosféricos extremos, de mayor frecuencia e intensidad.

Ejemplo: los cambios que se producen al aumentar la velocidad del agua en un arroyo.

[traspotin]

Sobre el cambio climático y el frío en Alemania una posible explicación es la siguiente: cuando aumenta la energía en un sistema caótico como la atmósfera, la turbulencia del sistema se incrementa y las oscilaciones son mayores. Aunque la tendencia es el aumento de la temperatura, el cambio que se percibe más claramente son los fenómenos atmosféricos extremos, de mayor frecuencia e intensidad.

Ejemplo: el aumento de la velocidad del agua en un arroyo.

El tema puede estar en el bloqueo que proporcionan las corrientes de jet stream (1) que parece se ven afectadas por la pérdida de hielo en el Ártico, favoreciendo posibles nevadas en Europa y EE.UU. Este año el máximo se ha alcanzado unas dos semanas antes de lo habitual, lo que quiere decir que este año también se perderá hielo seguramente, incluyendo una rotura de hielo sin precedentes única y exclusivamente producidas por un sistema de altas presiones (en general se necesitan de vientos fuertes para romper la plataforma de hielo). No es tan importante la extensión de hielo ya que lo es más la altura de la plataforma, el hielo antiguo desaparece y es sustituido por hielo nuevo que se deshace rápidamente una vez empieza la fragmentación. El vórtice polar ha desaparecido antes que nunca, incluso llegó a dividirse en dos allá por Enero-Febrero creo recordar, por un sistema de altas presiones muy inusual (sí, altas presiones en el Ártico en Enero). Algunos que realmente saben de lo que hablan ya vaticinaban que nevaría...y mucho, debido a la desaparición del vórtice. Pero no adelantemos acontecimientos que hay muchísima información éstos días sobre el Ártico y las nevadas producidas.
____________________________________________________

(1) http://iopscience.iop.org/1748-9326/8/1/014036/ (ojo la recepción del artículo es de Enero, no es respuesta a las nevadas producidas estos días)

[Starkiller]

http://www.goldseiten.de/artikel/166932--Eisige-Aussichten.html?seite=1

El marzo mas frio en Alemania desde que se tienen registros (130 años)

Algunos afirman, y puede que no anden desencaminados, que estamos entrando en una mini-edad de hielo. Caso de tener razón estaríamos ante un nuevo problema, especialmente en las zonas históricamente frías por el sobrecoste energético que supondría.

http://www.elconfidencial.com/alma-corazon-vida/2013/01/22/ldquoestamos-entrando-en-una-mini-edad-de-hielordquo-asegura-el-alcalde-de-londres-113319/

Eso dicen Abdusamatov y su pandi, pero la verdad es que son pocos dentro del total de científicos del clima.  El tema es que con los modelos existentes parece difícil que los efectos de las perturbaciones orbitales  y otros que modifican la irrandiancia solar sea mayores que los forzamientos "calentadores" del CO2, pero en realidad uno siempre tiene que delegar en "sabios" externos porque es una ingente masa de datos a procesar y de modelos a cuadrar, y las trampas de todo tipo caben ahí.

En todo caso este año parece que es importante y habrá que seguir el hielo ártico, que no ha empezado mal comparando con los desastrosos años inmediatamente anteriores  (2007, 2011 y 2012 han sido los peores), pero lo crítico serán los mínimos de mediados de septiembre, que es donde más se está separando de los promedios la extensión helada.

Hombre, claro que son pocos. Si yo me dedico a estudiar algo que va en contra del IPCC, en un campo en el que el IPCC influye o directamente financia el 80% de los estudios...

...pues la verdad, casi mejor, me dedico a estudiar el clima en Marte, las manchas solares, o los microclimas en los Cenotes. No se si me entiende.

Por otro lado, ya sabemos como va esto, son muchos años con lo mismo:

Si un año es cálido, es el calentamiento global.

No obstante, si hace frío,es muy diferente: es el cambio climático.

Me tiene más frito el temita...

[Starkiller]

Sobre el cambio climático y el frío en Alemania una posible explicación es la siguiente: cuando aumenta la energía en un sistema caótico como la atmósfera, la turbulencia del sistema se incrementa y las oscilaciones son mayores. Aunque la tendencia es el aumento de la temperatura, el cambio que se percibe más claramente son los fenómenos atmosféricos extremos, de mayor frecuencia e intensidad.

Ejemplo: los cambios que se producen al aumentar la velocidad del agua en un arroyo.

Buena teoría, si... salvo porque ha sido el año con menos efemérides en dos décadas, al menos. Y con menos desviación. La media de este invierno ha sido de las mas frías de las últimas tres décadas, pero no por tener días normales y días muy fríos, sino porque todos los días han sido considerablemente fríos, de forma muy constante. Este año no es que se lleve el mallot amarillo de frío; se lleva el de regularidad.

[NosTrasladamus]

Mientras, en la Antártida...
http://www.guardian.co.uk/environment/2013/apr/15/antarctic-ice-melt-record-rate

Antarctic ice melting at record rate, study shows

The evidence comes from a 364-metre ice core containing a record of freezing and melting over the previous millennium


Summer ice is melting at a faster rate in the Antarctic peninsula than at any time in the last 1,000 years, a new study has shown. Photograph: Nasa/AFP/Getty Images

Summer ice is melting at a faster rate in the Antarctic peninsula than at any time in the last 1,000 years, new research has shown.

The evidence comes from a 364-metre ice core containing a record of freezing and melting over the previous millennium.

Layers of ice in the core, drilled from James Ross Island near the northern tip of the peninsula, indicate periods when summer snow on the ice cap thawed and then refroze.

By measuring the thickness of these layers, scientists were able to match the history of melting with changes in temperature.

Lead researcher Dr Nerilie Abram, from the Australian National University and British Antarctic Survey (BAS), said: "We found that the coolest conditions on the Antarctic peninsula and the lowest amount of summer melt occurred around 600 years ago.

"At that time temperatures were around 1.6C lower than those recorded in the late 20th century and the amount of annual snowfall that melted and refroze was about 0.5%.

"Today, we see almost 10 times as much (5%) of the annual snowfall melting each year.

"Summer melting at the ice core site today is now at a level that is higher than at any other time over the last 1,000 years. And while temperatures at this site increased gradually in phases over many hundreds of years, most of the intensification of melting has happened since the mid-20th century."

Levels of ice melt on the Antarctic peninsula were especially sensitive to rising temperature during the last century, he said.

"What that means is that the Antarctic peninsula has warmed to a level where even small increases in temperature can now lead to a big increase in summer melt," Abram added.

Dr Robert Mulvaney, from the British Antarctic Survey, who led the ice core drilling expedition in 2008 and co-authored a paper on the findings published on Sunday in the journal Nature Geoscience.

He said: "Having a record of previous melt intensity for the Peninsula is particularly important because of the glacier retreat and ice shelf loss we are now seeing in the area.

"Summer ice melt is a key process that is thought to have weakened ice shelves along the Antarctic peninsula leading to a succession of dramatic collapses, as well as speeding up glacier ice loss across the region over the last 50 years."

The ice core record suggested a link between accelerated melting and man-made global warming. But a different and more complex picture has emerged from another region of Antarctica.

A separate US study, published in the same journal, shows that thinning ice from the West Antarctic Ice Sheet Divide cannot confidently be blamed on greenhouse gas emissions.

An ice core record from this site indicates a strong influence from unusual conditions in the tropical Pacific during the 1990s.

In that decade, an El Niño event – a cyclical system of winds and ocean currents that can affect the world's weather – caused rapid thinning of glaciers in the west Antarctic.

The spike in temperature was little different from others that occurred in the 1830s and 1940s, which also saw prominent El Niño events.

"If we could look back at this region of Antarctica in the 1940s and 1830s we would find that the regional climate would look a lot like it does today, and I think we also would find the glaciers retreating much as they are today," said lead author Prof Eric Steig, from the University of Washington.

He said the same was not true for the Antarctic peninsula, the part of the continent closer to South America. Here, more dramatic changes were "almost certainly" a result of human-induced global warming.

[Shevek]

Mientras, en la Antártida...

[...]

A separate US study, published in the same journal, shows that thinning ice from the West Antarctic Ice Sheet Divide cannot confidently be blamed on greenhouse gas emissions.

An ice core record from this site indicates a strong influence from unusual conditions in the tropical Pacific during the 1990s.

In that decade, an El Niño event – a cyclical system of winds and ocean currents that can affect the world's weather – caused rapid thinning of glaciers in the west Antarctic.

The spike in temperature was little different from others that occurred in the 1830s and 1940s, which also saw prominent El Niño events.

"If we could look back at this region of Antarctica in the 1940s and 1830s we would find that the regional climate would look a lot like it does today, and I think we also would find the glaciers retreating much as they are today," said lead author Prof Eric Steig, from the University of Washington.

He said the same was not true for the Antarctic peninsula, the part of the continent closer to South America. Here, more dramatic changes were "almost certainly" a result of human-induced global warming.

Cuidadito con ésto, que como haya también un aumento de temperaturas en los 1870´s me voy a emocionar y voy a sacar a pasear de nuevo el tema de la "MultiDecadal Variability":




http://www.transicionestructural.net/the-big-picture/el-hilo-del-clima-y-el-cambio-climatico/msg31131/#msg31131

No me tientes, no me tientes...

[Taliván Hortográfico]

Por otro lado, ya sabemos como va esto, son muchos años con lo mismo:

Si un año es cálido, es el calentamiento global.

No obstante, si hace frío,es muy diferente: es el cambio climático.

Me tiene más frito el temita...

¿Se han fijado que de unos años a esta parte las noticias meteorológicas se las toma la gente como los resultados del furbo? Cuando hace calor, sale un bando, digamos que los culés, diciendo que no sólo que haga calor, sino que eso demuestra que su equipo es el mejor, el más limpio, el más caballeroso, el que mejor encarna los valores positivos del deporte y el menos integrado por directivos corruptos y politizados y jugadores puteros y gañanes. Y cuando hace frío, salen los del Madrid diciendo más o menos lo mismo.

Evidentemente no estoy llamando hincha futbolero a ninguno de los foreros que participan en debates sobre el cambio climático manidestando sus posturas de una forma inteligente. Ni siquiera tendría que haber usado esa frase de "disclaimer", pero con este tema pasa como con tantos otros: en el ambiente de la calle han sabido imbuirlo de un grado de tal de susceptibilidad sentimental que hay que andar con pies de plomo sólo para mencionarlo.

[Starkiller]

Evidentemente no estoy llamando hincha futbolero a ninguno de los foreros que participan en debates sobre el cambio climático manidestando sus posturas de una forma inteligente. Ni siquiera tendría que haber usado esa frase de "disclaimer", pero con este tema pasa como con tantos otros: en el ambiente de la calle han sabido imbuirlo de un grado de tal de susceptibilidad sentimental que hay que andar con pies de plomo sólo para mencionarlo.

Es un efecto que suele pasar cuando se emplean tantos esfuerzos en "sensibilizar" a la gente sobre un tema. De esa forma, los fumadores son sucios y desagradables, los que no creen en el cambio climático, seres despreciables que quieren condenar a nuestros hijos, los que no les convence la democracia que hay "fascistas xenófobos", and so on...

[NosTrasladamus]

http://www.motherjones.com/environment/2013/05/400-ppm-carbon-climate-change

We've Hit the Carbon Level We Were Warned About. Here's What That Means.
A monitor in Hawaii registered 400 parts per million of carbon dioxide in Earth's atmosphere, higher than ever above the "safe" 350 ppm level.

This interactive explainer originally appeared on the Guardian website and is reproduced here as part of the Climate Desk collaboration.
http://www.guardian.co.uk/environment/interactive/2013/may/10/climate-warming-gas-carbon-dioxide-levels-interactive

Over the last couple weeks, scientists and environmentalists have been keeping a particularly close eye on the Hawaii-based monitoring station that tracks how much carbon dioxide is in the atmosphere, as the count tiptoed closer to a record-smashing 400 parts per million. Thursday, we finally got there: The daily mean concentration was higher than at any time in human history, the National Oceanic and Atmospheric Administration (NOAA) reported Friday.

Don't worry: Earth is not about to go up in a ball of flame. The 400 ppm mark is only a milestone, 50 ppm over what legendary NASA scientist James Hansen has since 1988 called the safe zone for avoiding the worst impacts of climate change, and yet only halfway to what the IPCC predicts we'll reach by the end of the century.

"Somehow in the last 50 ppm we melted the Arctic," said environmentalist and founder of activist group 350.org Bill McKibben, who called today's news a "grim but predictable milestone" and has long used the symbolic number as a rallying call for climate action. "We'll see what happens in the next 50."

We could find out soon enough: With the East Coast still recovering from superstorm Sandy and the West gearing up for what promises to be a nasty fire season, University of California-Berkeley ecologist Max Moritz says milestones like these are "an excuse for us to take a good hard look at where we are," especially as the carbon concentration shows no signs of reversing course.

Scientists first saw the carbon scale tip past 400 ppm last summer, but only briefly; the record reported today by NOAA is the first time a daily average has surpassed that point. For the last several years concentrations have hovered in the 390s, and we're still not to the point where the carbon concentration will stay above the 400 ppm threshold permanently. But that's just around the corner, said J. Marshall Shepherd, president of the American Meteorological Society.

"It's clear that sometime next year we'll see 400 consistently," he said. "Avoiding the future warming will require a large and rapid reduction in greenhouse gases."

Most scientists, environmentalists, and climate-conscious policymakers agree this will require, at a minimum, slashing the use of fossil fuels, and in the meantime, taking steps to adapt for a world with higher temperatures, higher seas, and more extreme weather. For example, according to Hansen, the world will need to completely stop burning coal by 2030 if returning to 350 ppm is to remain possible. What's the holdup? Texas Tech University climatologist Katherine Hayhoe blames "the inertia of our economic system, and the inertia of our political system." But she, like most of her peers, believe it can—and must—be done: "We have to change how we get our energy and how we use our energy."

Some progress is being made on that front: Thanks to energy efficiency gains, increased use of renewable power, and policies to cut emissions from cars and power plants, carbon emissions in the United States have fallen 13 percent in the last seven years. But they're expected to begin climbing again soon, and worldwide, 2012 saw the most carbon emissions ever. Today's milestone underscores the reality that if we're serious about addressing climate change, there's still a long road ahead.

"So far we have failed miserably in tackling this problem," NOAA scientist Pieter Tans, who oversees the monitoring program, told the Times.

For McKibben, the real date to mark in the history books has yet to arrive: "I don't think this will be the turning point. The turning point will be when we do something about it."

[NosTrasladamus]

http://motherboard.vice.com/blog/our-frankenstorm-factory-is-running-full-steam-the-2013-hurricane-season-is-going-to-be-hell

We're Cranking Up Our FrankenStorm Factory Again: The 2013 Hurricane Season Is Going to Be Hell

It's about that time. The lights are back on, and theres a plume of smoke pumping out of that dirty old Frankenstorm factory we all built. Storms' a-comin'.
http://motherboard.vice.com/blog/our-frankenstorm-factory-is-running-full-steam-the-2013-hurricane-season-is-going-to-be-hell

Hurricane season officially begins on June 1st, and climatologists and meteorologists are bracing for another "above normal" or "extremely active" season. Above normal because humans built that frankenstorm factory in the first place, when we loaded up the atmosphere and the oceans with carbon and methane and cranked up the greenhouse effect. Now government climate forecasters say we're in for another hell of a season these next few months.

Last year, you'll recall, saw Hurricane Sandy transform into FrankenStorm Sandy, after the tropical storm collided with another system that had moved in from the Midwest. Scientists were unusually quick to direct some of the blame for the storm's unusual potency on climate change—warmer-than-average ocean temps helped fuel the storm's amphetamine fury, higher sea levels made deluge easy.

It was a storm of storms, and it was the national headline. For a while there, we were all talking about global change. Even Republicans.

But as we're wont to do, we soon moved on to other tragedies and curiosities, shootings and bombings and presidential politics, and we forgot that the Frankenstorm factory was just idling for the winter.

Now, in its annual forecast, the National Oceanic and Atmospheric Administration said that the 2013 Atlantic hurricane season is predicted to bring 13-20 tropical storms. As many as 11 of those will turn into hurricanes. As many as 6 of those could become a Category 3 or more. That's a 110 mph+ storm, folks.

NOAA chief Kathryn Sullivan told Reuters that "For the six-month hurricane season which will start June 1, NOAA predicts an above-normal and possibly an extremely active hurricane season."

Reuters has more: "Speaking at NOAA's Climate Prediction Center, she said the hurricane season for the Atlantic Ocean, Caribbean Sea and Gulf of Mexico threatened "quite a lot of activity" due to a combination of several climate factors, including warmer-than-average temperatures in the tropical Atlantic and Caribbean."

Alas. Warmer-than-average ocean temperatures are like Red Bull for storms. More energy, more anger. Just a key component of the frankenstorm factory, though, a fact of life. Oceans are warmer now, so are global average temps, and that warmer air holds more moisture. Stormier storms. It's bad news for East Coasters, some of whom still haven't finished repairs on the damage left by the last frankenstorm. Some of whom are still homeless.

Doesn't matter much to the new-and-improved-and-hotter-than-ever climate system though. It's hurricane season. Let's see what Frankenstorm factory cranks out this time.

[NosTrasladamus]

http://www.nytimes.com/2013/05/30/world/europe/in-swiss-alps-glacial-melting-unglues-mountains.html?hp&_r=0

As Glaciers Melt, Alpine Mountains Lose Their Glue, Threatening Swiss Village


Tourists walking along a stream originating from the Lower Grindelwald Glacier in Switzerland. The glacier once extended  through the gorge.
By JOHN TAGLIABUE
Published: May 29, 2013

GRINDELWALD, Switzerland — Marco Bomio recalls that bright Sunday morning in June 2006 as if it were yesterday. Mr. Bomio, 59, a school principal and mountain guide, attended a religious service on a high mountain meadow to mark the founding of a local guide group.

“Suddenly we saw this immense cloud,” he said over coffee in a wood chalet typical of this Alpine village. “Normally, it might have been snow. But in June?”

“Then we saw that it wasn’t snow,” he went on. “It was rock dust: part of the mountain had come down.”

Grindelwald, population 3,800, lies in the foothills of a wall of Alpine peaks, rising to more than 13,000 feet. It is also home to two of Switzerland’s largest glaciers, the Upper and Lower Grindelwald Glaciers, which for millenniums have snaked their way through Alpine gorges toward the town.

With global warming, the glaciers are melting. Once stretching to the edge of town, they now end high in the mountains. Moreover, their greenish glacial water is forming lakes. In summer, when the melting accelerates, floodwaters threaten the area. But the avalanche witnessed by Mr. Bomio shows that the shrinking of the glaciers removes a kind of buttress supporting parts of the mountains, menacing the region with rock slides.

Grindelwald stands as a stark example of what is happening these days to Switzerland’s glaciers, and there are more than a hundred, large and small. As the Lower Grindelwald Glacier shrank, its ice no longer buttressed the east wall of the Eiger, a 13,025-foot mountain that is part of the ring south of Grindelwald. Moreover, the warming reduces the effect of permafrost that once acted as a sort of glue binding together the mass of the mountains. On that day in 2006, a chunk of the Eiger amounting to about 900,000 cubic yards fell from the east face, causing the cloud of rock dust that startled Mr. Bomio and his friends.

Since 1997, Ruth Meier has run the Hotel Gletscherschlucht (the name means glacier gorge), with 6 rooms and 18 beds, at a point where water from the melting lower glacier runs out of a steep and narrow gorge. Well into the 20th century, the glacier extended clear through the gorge, which is about three-fifths of a mile long, and until about World War I, ice blocks were carved out of it for use in cooling in restaurants and kitchens as far afield as Paris. Where her hotel stands a field kitchen once fed the workmen who hacked the ice.

But now a large lake of melted glacial water has formed above the gorge. To avoid potential flooding that would threaten the village below, Ms. Meier said, a $15 million tunnel, more than a mile long, was completed in 2010 to channel excess water when the lake swells in the summer. Before that was done, she said, summer floodwaters regularly pushed gigantic ice blocks down the gorge.

“In July and August, it sounded like battle tanks coming down,” she said, sipping mineral water. “You could hear the stones rolling.” Floodwaters forced their way through the narrowest parts of the gorge, about 30 feet across, “like water gushing from a garden hose,” she said.

Why build a hotel at such a delicate spot? “To be at the pulse,” Ms. Meier answered. “We’re at the pulse of the eternal ice.”

Well, not so eternal any more. Over the past century or so, glaciers like those around Grindelwald have receded by about 650 feet, said Hans-Rudolf Keusen, a geologist whose company, Geotest, helped design the overflow tunnel. “Since 1980 it has been very rapid,” Mr. Keusen said. “In the last 30 years the average temperature in the Alps has risen by one and a half degrees.”

For Alpine towns like Grindelwald, the changes are challenging. As the glaciers recede, they leave masses of rock and sediment — moraines — on their edges. In 2011, rock and snow came down on the upper glacier, as sides of a mountain became unstable without the supporting pressure of the ice. A year before the Eiger collapsed, in 2005, a section of a high Alpine meadow fell, leaving a popular restaurant, the Stieregg, hanging precariously on the edge. Ms. Meier’s mother-in-law recalled herding sheep there as a girl.

Tourism long ago supplanted agriculture as the driver of the local economy. Every year, about 800,000 visitors from all over Europe, but also from America and increasingly Asia, board trains to climb from the town center to the Jungfraujoch, a saddle between two peaks over 13,000 feet known as “the top of Europe,” to enjoy the view.

The first tourists, English aristocrats, came in the 18th century. The first hotel opened in 1820; the first skiers came in 1891. Tourism now amounts to “more than 80 percent of the economy,” said Bruno Hauswirth, a marketing expert who manages the local tourism agency.

“It’s not just tourism; it’s a cross section,” he said. “Construction, financial services, retail.” Outside his office, backhoes were excavating for a $30 million shopping area in the village center.

Mr. Hauswirth, 45, who skied and taught skiing in North America, Japan and New Zealand before returning to his native Grindelwald, sees the changes in the mountains as an opportunity, not just as a threat. “You learn to live with it,” he said. The risks “are no more than in other areas of the Alps,” he said, adding, “People here are used to living with the mountains; it’s natural.”

Tour guides like Mr. Bomio are even profiting from the results of global warming, organizing “warming tours” to explain its effects using local developments as examples.

“Here you can visualize it; you can see it and feel it,”’ Mr. Hauswirth said. “You can see how we are reacting to it.”

The gorge overflow tunnel is not the only reaction. Hiking trails are being moved to avoid areas at risk, said Herbert Zurbrügg, Grindelwald’s town secretary. Across the mountains, Mr. Zurbrügg said, the authorities are installing radar devices to track movements in the landscape so that the few tourist destinations that are near glaciers, like campsites, can be evacuated if necessary.

“I think we can say we have the situation under control,” Mr. Zurbrügg said. “There is no fear.” Most measures taken, to control the flow of meltwater or to monitor regions surrounding the glaciers, are well outside the inhabited parts of town, he said.

“We are in a fortunate situation,” he said. He paused, then added, “Yet, you never know.”

Edito para añadir referencias a algunos de los desprendimientos por el deshielo de los glaciares que cita el artículo:

http://www.swissinfo.ch/eng/archive/Disaster_tourists_flock_to_Eiger.html?cid=35704

http://www.ggzh.ch/php/vortrag_detail.php?id=37

Rockfall - Felssturz - Staublawine	Small | Large

[NosTrasladamus]

Sooner than we think, our planet will burn away. At a global +4 °C per annum, by 2050 summers in the 0 to 30 degrees latitudes will reach 60 °C and between 2060 and 2080 this will rise to 80 °C, worsening thereafter. Only the poles of the planet will have some green left. Climate change is the catalyst, but the causes are an economic system that prefers growth over stability, resource depletion over efficiency, and ignores the signals of reality. Mankind's economic behaviour is beyond any understanding.

https://www.youtube.com/watch?feature=player_embedded&v=yuDLaq5R7Fc

[NosTrasladamus]

http://www.recmountain.com/2013/07/foto-del-dia-julio-2013.html
 
31 de julio de 2013- ¿Y todavía hay quien no se cree el calentamiento global? No me voy a remontar a las primeras fotografías de Chamonix, cuando el glaciar llegaba hasta el mismo valle principal y sus hielos se veían desde el pueblo. Ni a cuando fui la primera vez hace casi 30 años y con un corto paseíto desde Montenvers accedías al glaciar. De un año para otro puedes observar el creciente retroceso de los hielos y, lo peor es que no es algo puntual y aislado. Este fenómeno sucede en la inmensa mayoría de los glaciares del mundo, y eso algo que, por lo menos a mí, me ASUSTA.

[NosTrasladamus]

Por cierto, teneis que visionar "Chasing Ice", no os la podeis perder:

http://www.youtube.com/watch?v=eIZTMVNBjc4