Europa padecerá inviernos más fríos en los próximos años, pero el calentamiento global continúa

A pesar de las tendencias planetarias hacia el calentamiento global, Gran Bretaña y el centro de Europa posiblemente sufrirán inviernos gélidos más a menudo de lo normal en los próximos años.

Esto es lo que sugieren los resultados de un estudio realizado por científicos de la Universidad de Reading, del Laboratorio Rutherford Appleton en Oxfordshire y del Instituto Max Planck.

Los investigadores descubrieron una relación entre una baja actividad solar (el sol no siempre irradia con la misma intensidad) y una acuciada bajada de las temperaturas en estas regiones. La razón podría estar, según los científicos, en que cuando la actividad del sol disminuye, los vientos templados procedentes del Atlántico no alcanzan Europa durante el invierno y, por tanto, no ayudan al aumento de la temperatura.

Sin embargo, esta situación no implica que el cambio climático ocasionado por las actividades humanas no siga adelante, puesto que la temperatura del planeta sigue incrementándose como media, advierten los autores del estudio.




Y aqui teneis mas info pero en ingles.




Are winters in Europe becoming colder?


The low solar activity could influence the regional climate in Great Britain and Central Europe





Despite the trend towards global warming, people in Great Britain and Central Europe will possibly experience cold winters more often in the next few years. This is the findings of a study by scientists from the University of Reading, the Rutherford Appleton Laboratory in Oxfordshire and the Max Planck Institute for Solar System Research in Katlenburg-Lindau. The researchers have discovered a link between low solar activity and unusually low winter temperatures in this region. It is possible that, at times of low solar activity, the mild winds from the Atlantic do not reach Europe in winter. These results do not contradict an anthropogenic climate change, which is causing the temperatures on Earth to increase on average. (Environmental Research Letters, April 15, 2010)



Fig.: A sight which we will need to get accustomed to: Large parts of Great Britain and Central Europe were covered in snow during the previous winter, as this satellite image from 7 January 2010 shows.

Image: NASA

The sun does not always radiate with the same intensity: Phases of high activity, in which our Sun sends particularly large amounts of radiation and large numbers of particles towards Earth, alternate with comparably quiet phases in a roughly eleven-year cycle. Visible evidence of this cycle is provided by the dark sun spots which can sometimes even be seen with the naked eye. If there are a large number of these spots, the Sun is experiencing a particularly high level of magnetic activity and therefore radiates very brightly.

It has been known for some time that the solar cycle also affects temperatures on Earth. Particularly cold phases of Earth's history such as the so-called Maunder minimum at the end of the 17th century coincide with phases of weak solar activity. In their new study, the German and British researchers have now compared British weather records which go back to 1659 with the solar activity over the same period and evaluated them statistically.

The strength of the solar magnetic field, which extends to Earth where it causes small fluctuations in the Earth's magnetic field, served as a measure of the solar activity. Since sufficiently reliable measurements of the Sun’s magnetic field are only available from around 1900 onwards, the researchers reconstructed older values using computer simulations.

"The strength of the magnetic field is a better measure of the Sun’s activity than the number of sun spots, for example," says Sami K. Solanki, Director at the Max Planck Institute for Solar System Research. This is because two activity minima, when practically no sun spots dot the Sun, can be associated with very different magnetic field strengths. The Sun is much less active now than in the last 90 years.

The statistical comparison of the magnetic "temperature curve" of the Sun with the weather database shows very clearly that after decades of high solar activity and comparably mild winters, severe winters have become more common in Europe again. When the solar activity is low, the average winter temperature in Great Britain is around half a degree lower than otherwise.

The researchers’ results relate only to the winters in England and Central Europe. The reason for this very regional effect of the low solar activity could be changes to the winds in the troposphere, the lowest layer of the atmosphere. The researchers assume that when the stratosphere above it heats up only weakly, the mild strong winds from the Atlantic break off in the troposphere. Great Britain and Central Europe are then exposed to the influence of cold winds from the North East instead. The exact mechanism is still unclear, however.

"The connection between solar activity and cold winters in Europe only became apparent after we subtracted the superimposed trend towards global warming," explains Solanki. Therefore the study does not contradict the theory of global warming, which is caused by human influences. On the contrary: Many things point towards the Sun being responsible for this effect to only a lesser extent.

The scientists cannot forecast whether the next winter in Great Britain and Central Europe will also be bitterly cold. Their results are of a statistical nature and only point to the trend that in times of low solar activity unusually cold winters occur more often. But even in 1685, in the middle of the Maunder minimum, the British weather records document the warmest winter for 350 years.
Original work:



y aqui los enlaces de la noticia.



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Podrías retocar el texto y quitar cosas que sobran no?? Mas que nada pq se hará mas cómodo a la hora de leerlo...

Por cierto yo sigo pensando que lo del calentamiento global es algo natural.

¡ostias es verdad Admin!, ni me he dado cuenta lo he sombreado todo y lo he pegado, mil disculpas.

Ya esta corregido.

Hola, yo creo que la Tierra está sujeta a diferentes ciclos y es difícil intervenir en su discurrir. Ahora bien, la raza humana, en los últimos años, se ha mostrado muy capaz para acelerar o modificar estos ciclos, debido a su afán de cambiar el ambiente en vez de ser nosotros los que nos adaptemos a la naturaleza. A veces por unos motivos, metano de las vacas, por otros, CO de los coches, CO2, residuos y desechos peligrosos, deforestación (qué os voy a contar que no sepais) los humanos hemos emitido una presión constante en nuestra naturaleza.
Saludos

Por cierto yo sigo pensando que lo del calentamiento global es algo natural.

las bajas temperaturas en europa pueden deberse a la imvecion polar?
lo del calentamiento global ya esta mas que comprovado que es por cualpa del hombre, en este link lo dicen muy claro, ya que desmiente una supuesta manipulacion de datos quh ubo el la cumpre de copenage diciendo que era por efectos naturales.
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saludos.

yo lo sigo dudando

la verdad esque no hace falta ser un super cientefico un super recursos economicos para comprovar que el CO y CO2 atrapan el calor, por ejemplo cuando hay varias personas en un cuarto empieza a subir la temperatura ya que el cuerpo humano emite calor pero el co2 que exalamos no lo deja escapar. Eso por un lado por otro lado a los gobierno ni a las empresas no les gusta para nada la idea de coches electrico o de hidrogeno ya que la investigacion para desarrollar estos veiculos es tan costoso que es mas dinero que el que se gana con los impuestos de los combustibles fosiles. les recomiendo este documental donde explican la verdadera difucualtad de desarrollar estos coches. [Tienes que estar registrado y conectado para ver este vínculo]
pero bueno la conclusion es que no importa si es natural o artificial lo verdadera mente preocupante e importante es que la temperatura del planeta esta subiendo desenfrenada mente.

un saludote a todos.