Environtmental and Global Health

Posts Tagged ‘greenhouse effect’

Earth due to gravity on its surface retains air and seawater, and to set in motion the air and the sea in relation to the planet’s surface energy is needed as a primary source is the sun, which emits flow in all directions, visible light or near visible radiation in the areas of ultraviolet and infrared.

According to the approaches of Sadi Carnot on the operation of the steam engine, it is known that the transformation of thermal energy into mechanical energy Read the rest of this entry »

Earth’s atmospheric greenhouse effect associated with radiation processes going on inside. radiation is a form of energy, and is transmitted only in a vacuum.

Other forms of energy transmission in the natural environment are conduction and convection. In conduction heat spreads through the solid (propagation of heat from the surface soil to a lower level). In a fluid (gas and liquid) heat transfer by convection process through which a relatively warm part of the fluid, moving, and then mixed and integrated into a relatively cool environment.

Read the rest of this entry »

Emissions of carbon dioxide have surged 41% from 1990 to the present. This is an alarming percentage, if we consider that is a global benchmark. Carbon dioxide (CO2) pollution is one of the largest and most important greenhouse gas. The Earth begins to suffer the consequences and accelerates global warming.

These data are the result of a report prepared minuscioso the International Global Carbon Project (GPC). Corinne Le Quere, professor at the University of East Anglia in the UK is the Coordinator in charge of the investigation. As stated by the teacher: “If this continues, we will increase the temperatures of 5 or 6 degrees by 2100.

In the report prepared Global Carbon Project (GPC) has analyzed the ability of the Earth to meet this increase in emissions. Until recently, much of the CO2 caused by human activity ended in the oceans or be absorbed by vegetation. Undoubtedly, this was positive because the carbon dioxide did not reach the atmosphere and prevented the enhanced greenhouse effect. Read the rest of this entry »

The climate has always varied, the problem of climate change is that in the last century the pace of these changes are abnormally accelerated to such an extent that affects and planetary life. In seeking the cause of this acceleration, scientists found that a direct relationship between global warming or climate change and increasing emissions of greenhouse gases (GHGs), caused primarily by industrialized societies.

A phenomenon of concern to the world: global warming and its direct impact, climate change, which occupies much of the efforts of the international scientific community to study and control it, because, they say, threatens the future of humanity.

Why so worried? Leading scientists agree that the increased concentration of greenhouse gases in Earth’s atmosphere is causing changes in climate. They also agree that emissions of greenhouse gases (GHGs) have been very intense since the Industrial Revolution, after which time the action of man over nature became intense. Read the rest of this entry »