mas evidencia del calentamiento global

[MZM]

por que se detiene? No le veo sentido.

tampoco le veo sentido.
pero dicen los mismos alarmistas que al haber mas evaporacion hay mas agua, mas lluvias y mas tormentas de nieve, mas hielo se va a acumular?

quien dice? y porque no pueden ser mejores o parecidas?
pero va a haber mas lluvia segun los alarmistas...

si y que?

quien dice que tiene que abandonarlas? y las nuevas tierras de cultivo?

Era opinión personal o no??

Usted tampoco tiene evidencia de que esas nuevas zonas van a ser creadas mágicamente....

Los puntos se los aclararía pero es seguir su juego de autojustificación.

 

[Machaca]

peyistez dice que el hielo artico ha aumentado. de dónde saca esos datos?

http://en.wikipedia.org/wiki/File:Seaice-1870-part-2009.png

 

[peyistez mecayo]

Antartico..NOAA

 

[Machaca]

diay pero entonces toda la hablada tuya de que los osos polares no estaban en riesgo y que era pura propaganda de "alarmistas"?

era pura paja tuya?

 

[Machaca]

Antartico..NOAA

Antarctic Ice Sheet Melting Speeds Up

Ice loss in Antarctica increased by 75 percent in the last 10 years due to a speed-up in the flow of its glaciers and is now nearly as great as that observed in Greenland, according to a new, comprehensive study by NASA and university scientists.

In a first-of-its-kind study, an international team led by Eric Rignot of NASA's Jet Propulsion Laboratory, Pasadena, Calif., and the University of California, Irvine, estimated changes in Antarctica's ice mass between 1996 and 2006 and mapped patterns of ice loss on a glacier-by-glacier basis. They detected a sharp jump in Antarctica's ice loss, from enough ice to raise global sea level by 0.3 millimeters (.01 inches) a year in 1996, to 0.5 millimeters (.02 inches) a year in 2006.

Rignot said the losses, which were primarily concentrated in West Antarctica's Pine Island Bay sector and the northern tip of the Antarctic Peninsula, are caused by ongoing and past acceleration of glaciers into the sea. This is mostly a result of warmer ocean waters, which bathe the buttressing floating sections of glaciers, causing them to thin or collapse. "Changes in Antarctic glacier flow are having a significant, if not dominant, impact on the mass balance of the Antarctic ice sheet," he said.

lo que está creciendo es el hielo a lo interno del continente. el hielo alrededor del continente, sensible al aumento de la temperatura de los oceanos, se está derritiendo. AMBAS COSAS son consecuencia directa del CG.

Definitivamente tus argumentos son débiles. Muuuuuuuuuuuuy débiles.

 

[peyistez mecayo]

En promedio ha aumentado el hielo en Antartida y no se ha calentado.

Las poblaciones de osos polares han aumentado.

 

[Machaca]

por último

léa este artículo de la NOAA, ya que al parecer a ud le gusta la NOAA

NOAA - National Oceanic and Atmospheric Administration - Arctic, Antarctic: Poles Apart in Climate Response

y dése cuenta de muchas realidades que ud convenientemente o disingenuamente omite mencionar

 

[MZM]

Las poblaciones de osos polares han aumentado.

Links???

Los que veo dicen que no...

The PBSG reevaluated the status of the 19 recognized subpopulations of polar bears distributed over vast and relatively inaccessible areas of the Arctic. Despite the fact that much new information has been made available since the last meeting, knowledge of some populations is still poor. Reviewing the latest information available the PBSG concluded that 1 of 19 subpopulations is currently increasing, 3 are stable and 8 are declining. For the remaining 7 subpopulations available data were insufficient to provide an assessment of current trend. The total number of polar bears is still thought to be between 20,000 and 25,000

.

15th meeting of PBSG in Copenhagen, Denmark 2009

 

[Machaca]

acá otro link de osos polares

Climate Change - Polar Bears International

Changing Climate
Warming in the Arctic is happening much faster than computer models have been projecting. Large expanses of darker, open water are absorbing more heat and accelerating the process. Since the 1980s, Arctic sea ice has retreated dramatically, with the most extreme decline occurring in the summer melt season.

No one disputes that Arctic sea ice is going through a rapid melt-down. But some reports continue to suggest that it’s all part of a natural cycle not related to the build-up of CO2 in our atmosphere.

The debate is over. Hundreds of climatologists participating in the Intergovernmental Panel on Climate Change have concluded with at least 90% certainty that warming in the Arctic is linked to human activities that cause a build-up of greenhouse gases. Natural forces, from ocean currents to sunspots, may add to the problem, but they are not primary factors. Read more about this subject and watch our ice loss video.

emissions and restore the bears' habitat.”

Polar Bears Count
Let's talk about the numbers. Scientists have ************SPAM/BANNEAR************ rough estimates of historical polar bear populations. But we do know that in the 1960s, their numbers dropped sharply due to overhunting. Populations rebounded after restrictions on polar bear harvests went into effect in the1970s. It was a conservation success story.

Current threat. The current threat to polar bears is entirely different, and more dire. Today's polar bears are facing rapid loss of the sea ice where they hunt, breed, and, in some cases, den. Changes in their distribution or numbers affect the entire Arctic ecosystem.

Results from long-term studies show:
Canada's Western Hudson Bay population: 22% decline since the early 1980s, directly related to earlier ice break-up on Hudson Bay

Southern Beaufort Sea population along the northern coast of Alaska and western Canada: decline in cub survival rates and in the weight and skull size of adult males; similar observations made in Western Hudson Bay prior to its population drop

Baffin Bay population, shared by Greenland and Canada: at risk from both significant sea ice loss and substantial over-harvesting

Chukchi Sea population, shared by Russia and the United States: declining due to illegal harvest in Russia and one of the highest rates of sea ice loss in the Arctic

 

[peyistez mecayo]

No desmiente nada de lo que yo puse, el link estaba en otro tema y no lo habian podido refutar.

 

[Machaca]

falso totalmente.

esta es evidencia de que lo que usted con tanta elocuencia defendia anteriormente ahora no sabe ni que decir.

 

[peyistez mecayo]

Cual evidencia? es de la Antartida, no del Artico, aprenda a leer.

 

[Machaca]

el que no sabe leer es otro. vea lo que puse de los osos.

peyistez...

 

[Maleante.]

No desmiente nada de lo que yo puse, el link estaba en otro tema y no lo habian podido refutar.

"No lo habían podido refutar"...

Peyistez debería patentar esa técnica retórica, bastante ingeniosa por cierto.

 

[peyistez mecayo]

Entonces para que pone grafiquitos del Artico?

Los osos en la decada del 60 eran de 5 a 10 mil unidades...hoy en dia son de 25 a 30 mil , estan mejor que nunca o no?

 

[Machaca]

"No lo habían podido refutar"...

Peyistez debería patentar esa técnica retórica, bastante ingeniosa por cierto.

que tiene de ingeniosa?

Peyistez: Este cuadrado es rojo

todos los demas: es verde.

Peyistez: "No han podido refutar que es rojo".

 

[Maleante.]

que tiene de ingeniosa?

Nadie me ha refutado que sea ingeniosa.

 

[peyistez mecayo]

wow que importante que soy

 

[aherreracr]

wow que importante que soy

Esto ,:!::!::!::!::!::!::!: como decirlo sin herir lo

 

[JorgeF]

Curioso lo que dice el pie de pagina del famoso grafico:

Extensión de la banquisa 1870-2000 del Hemisferio Norte en millones de km². En azul: indica la era presatélite, son datos menos fiables. En particular, la extensión casi constante en nivel en el otoño de 1940 refleja falta de datos en vez de una falta real de variation.

Cómo determinar si la caída es una tendencia, o parte de un ciclo? Y cómo sacar conclusiones con apenas 40 años de datos válidos?