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It is a mixture of several gases and aerosols (solid and liquid particles in suspension), is the integrated environmental system with all its components. Among its many functions maintains conditions suitable for life. Its composition is remarkably homogeneous, the result of mixing processes, 50% of the mass is concentrated below 5 km. s.n.m. The most abundant gases are N2 and O2. Despite being in low quantities of greenhouse gases meet a crucial role in atmospheric dynamics. Among these we count the CO2, methane, nitrous oxide, ozone, halocarbons, aerosols, among others. Due to its importance and the role they play in global climate change, discussed below. |
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Previously it is important to understand that the Earth's climate depends on the energy balance between solar radiation and radiation emitted by the Earth. Reirradiación This, coupled with the power geotectonic, greenhouse gases play a crucial role.
In analyzing the atmospheric gases, including greenhouse gases, it is important to identify the sources, sinks and reservoirs or the life cycle of each data critical to controlling air pollution.
One source is the point or place where a gas or pollutant is emitted is, where to enter the atmosphere. Reservoir or a sink is a point or place at which the gas is removed from the atmosphere or absorbed by chemical reactions or on other components of the climate system, including oceans, ice and land. The life cycle shows the average time that a molecule of the contaminant remains in the atmosphere. This is determined by the velocities of emission and capture in reservoirs or sinks.
The increase in atmospheric greenhouse gases has increased the capacity to absorb infrared waves, increasing their radiative reinforcement, which increases the surface temperature. This is measured in watts per square meter (W/m2).
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