Tema4: ¿Es evitable el cambio climático?

4.1 ¿Qué diferencia hay entre tiempo atmosférico y clima?


Weather is the one who understands all the various phenomena occurring in the atmosphere of Earth or a planet.


The climate encompasses the statistical values ​​on the elements of weather in a region during a representative period: temperature, humidity, pressure, winds and rainfall, mainly.


4.2 ¿Qué factores regulan el clima global de la Tierra?


Means the weather factors that regulate all those circumstances which change theexpected features of the climate as its elements in a given location. Some of thesecircumstances are: Latitude, Altitude, distribution of land and water masses, ocean currents, mountains and ridges (relief), distance to the seas and oceans,continentality (distance from the sea) and Winds.




4.3 ¿Qué cambio climático ha habido en el pasado y qué lo ha generado?




-The paradox of weak Sunsolar brightness varies over time, so we know that in the first moments of life on Earth, the Sun emitted 70% of current energy and the equilibrium temperature was -41 º C.

-The greenhouse effect in the past: the concentration, in the past, carbon dioxideand other major greenhouse gases, like methane, which has been measured frombubbles trapped in ice and marine sediment samples by observing has fluctuated over the ages. The exact causes are unknown by which produce these decreases and increasesalthough there are several scenarios under study.

-Carbon dioxide as a regulator of the weather: the carbon dioxide plays an important role in the greenhouseIf the temperature is high, facilitating its exchange with the oceans to form carbonateThen, the greenhouse effect and the temperature drops too. If the temperature is low, the carbon dioxide accumulates,is not favored since extraction, thereby increasing the temperature. Carbon dioxidealso plays a regulatory role.

4.4 ¿Supondrá el cambio climático la destrucción de la Tierra?



No. You can take action to prevent it.
Climate change can and must help it, because we have the knowledge andtechnology to reduce greenhouse gas emissions and the greenhouse effect.

However, that knowledge and technology we must begin to implement and to combat climate change. According to experts, these gases can be reduced by up to 26,000 million tonnes by 2030, enough to limit the rise in temperatures is expected on the planet C to 3°C.


4.5 ¿Qué está causando el cambio climático actual?



What is causing both the use of fossil fuels as energy sources in industry and transport.

*Forest fires at any time will be a constant natural organic into a variable in the equation of anthropogenic global warming. Too much fire, caused by human hands, could be implicated as a first-order variable in the acceleration of globalwarming.

*Common human activities like burning fossil fuels (coal, oil and gas) and the destruction of forests, have become major causes of air AA emission of carbon dioxide, the most dangerous gas in generating the effect emissions. The forestsare under threat from several fronts. The timber industry, agricultural expansion, acid rain ... adversely affect the absorptive capacity of the forests of excess carbon dioxide.



4.6 ¿Afectará a todo el mundo por igual?

It will affect us all equally. The poorest countries are those that contribute least to climate change, but instead, are the most likely to suffer its effects. By contrast,developed countries and coldas the U.S. and Northern European countriesin addition to better technology and means to address the damage, the temperature rise even provide some positive effects.



4.7 ¿Qué consecuencias se prevén y cómo afectarán al área mediterránea y en Andalucía en particular?


-The consequences in Mediterranean areas is drought. The water here is half assmall. Its aftermath, one of the best places to observe, is in tourism, and in 2007closed much of the ski slopes and beaches were reduced by rising sea level and, therefore, is no longer attractive for tourists.

-According to experts, agriculture will be affected by increased drought, and thatspoiled crops and begin to see desert areas.

-Also, the ocean warming has caused the increase in jellyfish plates on our shoresand in the peninsula. According to expert studies, could be an appropriate site for mosquitoes that carry malaria.

-The high mountain areas with temperatures as high.



4.8 ¿Qué se puede hacer para evitarlas?





1) Avoid the use of cars and use public transport instead, to reduce consumption of fossil fuels and avoid carbon dioxide removal.

2) Have a home well insulated to prevent heat loss or cold.

3) Use energy efficient appliances.

4) Do not turn the lights on during daytime.

5) When making short trips, use the "legs" or a bicycle to move.

6) Stop the deforestation.

7) Unplug the TV, stereo ... home, because if we leave them in "stand by" continuewasting energy.