quarta-feira, 25 de abril de 2007

Global Heating


Global heating
In 1896 Svante Arrhenius Swedish chemist suggested that carbon dioxide being in the atmosphere by the industrial civilisation could heat the surface of the Earth. Bioligists who dealt with the life of the ocean said that it wasn’t possible. Sometimes some of them suggested that they should return to the problem.
Every spring the plants burst into flowers and take up carbon dioxide. Every au
tumn with the withdrawal of the flora carbon dioxide gets back to the air. Putting together the series of the different years we can receive a lifting curve. Every year a growing quantity of carbon dioxide gets into the atmosphere and at the end of the in-and out breathing series of the plants more and more remain in the air. Keeling-curve had clearly proved what people just wondered about up till then that by human activity carbon dioxide being let go into the air doesn’t absorb in the oceans and in the flora but it accumulates year-after-year in the atmosphere of the Earth: man changes the composition of the atmosphere.
Connection between the atmospheric carbon dioxide content and the temperature
According to theoretical considerations, calculations and experiments in relation with this matter, the present total atmospheric carbon dioxide content causes approximately 7 degrees higher temperature on the surface. This amount has increased with almost one-third in the last 150 years. A research team had analysed a millions of date of the part 50 million years and came to the conclusion that the oceans’ water also became warmer under the surface as far as 300 metres. Since the heat capacity of the water much higher than the air, therefore the water of the ocean took up this surplus. Obviously, a balance has been developing between the water and the air about it, so, in a billowy process this surplus will get loch from the ocean to the air. The warmer water steams are quicker that’s why on one hand more wetness gets into the air and that causes more rain, on the other hand quicker air lifting generates more powerful winds and steams and that last warmer air has greater energy, therefore it is more vehement mobile changeable.
The discovery wasn’t taken seriously in the beginning
Many people haven’t known it what "global darkness" or "global dimming" are caused by. This perception was contrasted with all the other scientific theories, it may have been forgotten for a long time and that can be the reason why only few people know about it.
measuring of sunshines
A very easy instrument is used for the measure of the sunshine. The substance of the measure is the following: they take a black plate, then measure that part of the plate which is reached by the sunshine, now much it becomes warmer than that side which isn’t reached by the sun.
As the longer-distance global views are concerned we know 3 things surely:
1. We know that the climate isn’t unchangeable (geological dates prove)
2. We know that the water-steam and the various "greenhouse-effect gases", among them firstly the carbon dioxide, what kind of role they play in the formation of the climate.
3. Finally are known that the atmosphere concentration of the greenhouse-effect gases permanently and significantly increases for decades.
The developed counties can reduce abroad, too.
The common realization (joint implementation) makes it possible that the developed industial counties, which are the greatest emitters, decrease the emit not only in their own county. A determined part of emit-lesson comes from such projects are accounted in their own country by the sponsors. If the bigger carbon-dioxide emitters of the industrialized counties really have to suffer the costs of the emit-decrease, they’re standing in front of enormous expenditures. However the greatest emitters and some states have already started the organization of projects of common realization, because as they said, they can find the most favourable solution for every participant, if they start the organization of common realization and clear development projects. The graph shows the 10 counties emit the greatest quantity of greenhouse-effect gases.

Global heating-now will it offect Hungary?
The climate-changing, global heating processes also offect Hungary of course: think of the continually more frequent or oughts of the Plain, or the decrease of the water level of Lake Balaton in the last few years.
It isn’t unambiguous now the quantity of rainfall takes shape.
Analysing the quantity of the rainfall there are no unambiguous conclusions at all. According to certain conclusions the quantity of rain and snow will increase in our country, according to others the opposite process will exactly happen. But the greatest problem isn’t this, but that in summer the proportion of rainfalls must decrease which is characteristic for the Great Hungarian Plain being endangered by drought.
Source:

Nenhum comentário: