Posts Tagged ‘geography’

Brazilian Climate

August 9th, 2016
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Thus, one brief relation of these atmospheric systems and its characteristics becomes, emphasizing its places of origin and performance, beyond explanar the dynamism that they cause. This study one gave through a reading on the atmospheric systems and the climatic controls, that are the responsible ones for the movement of air. Air masses, fronts, movement of air. The atmospheric systems? the air masses the fronts related they, are the meteorological phenomena that more influence the time in our continent. The comment of these phenomena is of utmost importance for a detailed knowledge of the climate, being thus the analysis of the atmosphere through the equipment job new, increased the study of the different fields of pressure, which are formadores of the controls climatic. These studies of the atmospheric dynamics have as objective to describe and to predict the meteorological conditions, identifying the climatic controls, which cause the climate of one definitive region. From this form, the air masses dislocate in the direction Equator-Polar region, generating atmospheric discontinuities that are the fronts, them determine the climates of the subtropical and tempered regions.

The movement of air is supported by the different distribution of the energy solar and influenced by the rotation of the Land. These movements are the determinative ones of the climatic zones in the different places of the Planet. Thus, the average position of the main centers of action and the dominant winds cause the dynamism of air on the surface. Being thus, it can be inferred that the climatic types of Brazil are given through the great movement of the air, caused for the dynamism of the atmosphere. With this, one perceives that the Brazilian territory sufficiently is influenced by air masses and front.


Sun Reflection

July 15th, 2016
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The latitude also influences directly in the amount of radiation that arrives the terrestrial surface, therefore the terrestrial axle possesss average inclination of 23, such characteristic in accordance with the period of the year, makes with that a hemisphere is more ' ' iluminado' ' , that is, it receives greater radiation that the other, thus, the stations of the year, as much the main ones as summer and winter, as the transitory ones as autumn and spring, is alternated in each hemisphere, therefore, the Land possesss rocking of different radiation during the sazonais periods of the stations of the year. The altitude of the Sun, understood here as the angular relation between the incident ray and the tangent formed in one determined point of the terrestrial surface, also it affects in the amount of incident solar radiation on the Land, therefore how much lesser the surface will be the angle of the tangent formed in relation, minor will be the bigger absorption and Albedo, that is, capacity of reflection of energy proceeding from the solar ray for the surface, in the same way how much bigger it will be the formed angle, more intense it will be the absorption of the incident ray and lesser it will be its reflection. Soon, during the first hours of the morning and in entardecer the Sun forms the lesser angles in relation the terrestrial surface what it causes to minor absorption of energy and greater reflection process, with the evolution of the day the Sun arrives at its maximum point of altitude to the noon forming great and straight angles in the tangent with the surface, in this case the energy absorption will be bigger while the reflection will be neglected. Inside of as the group of factors that influence the distribution of insolation on the terrestrial surface, has it distribution of the liquid and terrestrial surfaces, beyond the rise and the behavior of the same ones.


Solar Radiation

March 16th, 2016
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The dynamics of the solar radiation and the main aspects of the energy rocking global Anderson Azevedo Mesquita* the Sun is great astro of the universe, is of it that energy waves are radiated that if propagate for all space and that they reach and they give to dynamics the main physical, biological and chemical functions of the systems and subsystems that receive the radiation solar as form from motor energy. The Sun supplies 99.97% of the energy that is used by the systems that form the Land, presents capacity of production of huge energy, the radiated ratio is of about 56 x 10 v calories of energy per minute, where the Land intercepts only 2,55 x 10 x calories, sum enough to supply the necessity and the energy consumption of the world 30 a thousand times during 01 (hum) year. (AYOADE, 1986) the energy radiated for the Sun is propagated in the space for intermediary of electromagnetic waves that present specific behavior and lengths. Second, Tubelis (1980) to the spectral distribution of solar radiation is indicated in the band of wave length between 0,3 and 4 microns, therefore, the solar radiation is called of radiation of short wave, being the main waves radiated pertaining to this group, of the ultraviolet band, the visible band and the infra red ones, being the radiated respective proportionality in the Land of 9%, 41% and 50%. When arriving the Land, the solar radiation will interact the principle with atmosphere and all its composites, the radiation will go to cross the atmospheric layers and sublayers and will suffer processes from attenuation. Such processes of attenuation, according to Tubelis (1980), are three: 1.

Scattering for particles of the atmosphere or diffusion; 2. Selective absorption; 3. Process of absorption and reflection for clouds. The particle scattering or diffusion is the scattering of the solar ray caused by diverse gaseous composites or of solid or liquid microparticles that are in suspension in the atmosphere, depending on characteristics of these elements, and the type of wave emitted for the Sun that is attenuated by the process of scattering or diffusion, abundance of certain colors of light in the visible portion of the solar specter can be had greater, for example, the blue light more is spread of what the red color, therefore the dominant aspect of the blue color in the sky.