Pattern of Atmospheric Circulation and Heating
Pattern of Atmospheric Circulation and Heating
The global phenomenon of the atmospheric pattern of atmospheric circulation and heating can be superlatively analyzed as the flow of air on the earth surface because of the unequal heating that takes place on the earth surface and the changing forms of precipitation. It should be evident that the phenomenon of global circulation of atmospheric air turns the cold air mass in the high latitude areas towards the low latitude regions. Additionally, the phenomenon also shifts the warm air that emanates from the low latitude areas towards the direction of high latitude areas. As depicted by Spooner (2012) this factor arises since the rise of air above the earth surface causes it to move or shift further from the top layer of the troposphere and hence moves towards the pole regions.
Due to that movement towards the poles or polar regions, the air is forced to come together at approximately 30 degrees latitudes north and south. The paper focuses on the empirical description of ecology regarding its atmospheric heating and circulation. Factors that determines the high precipitation in the tropics, as well as the high precipitation at the temperate latitude, will be analyzed. Finally, the essay will focus on the low precipitation that is witnessed in the tropics and high rainfall in the savanna biomes and tropical dry forest.
Notably, mechanisms that result in high precipitation along the tropics are simply the product of the process of precipitation of water vapor from the atmosphere. The atmospheric water vapor settles down due to the force of gravity and collects on the surface of the earth. It should be noted that the mechanisms of entail precipitation snow, rain, and sleet just to name a few and usually takes place when the water vapor in the atmosphere becomes saturated after that condenses and falls as rainfall and precipitate (Richardson, 2014). Most importantly, the trade winds from both the south and north of equator also lay a vital role in the occurrence of high precipitation along the tropics. For instance, the blowing of trade winds from the north and south of the equator results in an emergence of the two air masses that are from the northeast and southeast. The two trade winds from either hemisphere meet near the equator resulting in the rise of warm and moist air since inter-tropical convergence zone is created.
Interestingly enough the rising air will eventually cool and hence, the cloud and rain will results. What should be noted from the above phenomenon is the fact that the meeting of warm and humid air that emanates from both hemispheres because of varied patterns of trade winds and the consequent air convection. Soon as they meet at the ITCZ high amount of precipitation is experienced. The scientist has called this pattern of cycling the Hadley cell that results from the rainy weather and cloudy atmosphere near the equator.
In the attempt to analyze the global atmospheric circulation and heating that takes place in its environs, temperate latitudes should be notes about its high level of precipitation. The mechanism behind such phenomenon is projected when air masses rise and, in turn, picks up the moisture present in the dry regions of lower latitudes. This causes the cloud to accumulate in the atmosphere. The accumulation of the cloud soon supersedes the weight of gravity and instead results in high precipitation that fall on the earth surface in a form of rainfall (Richardson, 2014). A tropical condition is then created as a consequence of the bands of the rainy and cloudy weather present along the equator. Temperate zones then result.
It should be noted that precipitation is determined by the level of temperature at a given location. It, therefore, means that the lower the temperature of a place the less the moisture it can hold at a particular time. Importantly, it should be noted that regions near the tropics are relatively warmer that those far from the equator. This phenomenon is because of direct heating of the sun’s rays due to the straight inclination of the earth surface at such points. In addition, the distance that is covered by the sun’s rays to reach areas near the tropics is quite shorter and hence a greater insolation is usually experienced in the tropics. The above factors explain why area near the tropics is warmer than those further away from the equator. Given the fact that it was relatively warmer in the tropics, the air in it holds comparatively more moisture and hardly lose it until it encounters colder air mass. The Colder air mass is usually found in the mountainous regions as they are forced to shift upwards by the warmer air. Notably, since the tropics are warmer the air moisture in it will have to encounter the cold air to lose it. This aspect causes the precipitation to remain relatively low.
Notably, the savanna biomes and tropical dry forest are located in the inter-tropical convergence zone. This region is found at latitude 23.5 north and south of the equator. Due to its high temperature, it is a zone that experience a lot of precipitation. As a result, there is high seasonal rainfall experienced in savanna biomes and tropical dry forest. The phenomenon can be explained while considering the sun’s orientation to the surface of the earth as well as the atmospheric circulation. Conversely, a lot of precipitation along the ITCZ is as a result of the intensive sunlight near the equator (Richardson, 2014). This aspect is due to the sun’s orientation that is the angular inclination of the sun towards the earth surface. It is evident that the sun usually reaches the equatorial regions at a right angle, therefore, creating more concentration of the rays per unit area. Also important is the distance covered by the sun’s rays through the atmosphere to reach the earth surface. It is acknowledged that the sun rays take a shorter distance to reach the areas around the equator. The intensive sun rays result in the rise of air that in turn causes the pressure to drop. The low-pressure air becomes cooler and condense as rain. Such phenomenon explains why there are the high amount of precipitation around the savanna biomes and tropical dry forest.
Conclusively, it is evident that the pattern of the atmospheric air circulation and heating results in variation of the temperature in various latitudes. That depicts the reason as to why there is high seasonal rainfall in the savanna biomes and the tropical dry forest. Mechanisms that are responsible for the high precipitation, as well as the small precipitation in different latitudes, are explained putting into account the variation in the atmospheric condition. Ideally, the pattern of atmospheric heating, as well as the circulation, should be examined to bridge the gap in the ecology.
Richardson, D. (2014, February 1). General Circulation Models. Retrieved January 1, 2015, from http://www.aip.org/history/climate/GCM.htmSpooner, . (2012). Environmental Science For Dummies. Hoboken: John Wiley & amp; Sons.
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