martes, 2 de septiembre de 2008

The climate change


We are at the end of summer and it hasn't done many days of intense heat.In winter did more heat of the normal, and hadn't many spring. If on every station it doesn't do the temperature that it must do it wants to say that the stations are learning to rotate or that the climatic change even is with us. Yes,it is the second.

For some years there have been changes in the climate, the temperature, the stations etc. This change is due to the modification of the climate on a large scale.
The parameters:temperatura, rainfalls, cloudiness etc., they are due to natural reasons, but in the last centuries also the human collaborated.
Además del calentamiento global, el cambio climático implica cambios en otras variables como las lluvias globales y sus patrones, la cobertura de nubes y todos los demás elementos del sistema atmosférico.La unica forma de evaluar estos ambios es modelos computacionales que intentan simular la física de la atmósfera y de los océanos, pero son muy limitados porque se desconoce el movimiento actual de la atmosfera.



Besides the global warming, the climatic change involves changes other climatic things like the global rains, the coverage of clouds and all the rest elements of the atmospheric system. The only way of evaluating these canges is a machin that try to simulate the physics of the atmosphere and of the oceans, but they are very limited because the current movement of the atmosphere is not known.

The human is today one of the climatic agents of importance. It started by felling forests to turn them . At the end of The 17th century the man started using fossil fuels that the land had accumulated in the subsoil. The burning oil, coal and natural gas has caused an increase of the CO2 in the atmosphere an increase of the temperature. It thinks that since the man measures the temperature approximately 150 years ago this one has increased 0,5 ºC and an increase of 1ºC in 2020 and of 2ºC in 2050. The reductions of the energetic intensity in the light vehicles, fuel would save itself, they can diminish the specific emission between 10% and 25% for the year 2020. And, if diesel, natural gas or propane is in use instead of petrol, technically they can reduce the emission between 10% and 30%, which would reach 80% if the fuels come from renewable sources.

1 comentario:

susana dijo...

leleetoooo =)



susana*