Metereology Essay Example | Topics and Well Written Essays - 1500 words

Metereology - Essay Example When a body of air rises, it moves from higher pressure to lower pressure. In so doing it must expand, and as it does so, its temperature is reduced. One can calculate the amount of cooling to be expected when the air is lifted by a fixed amount. If the air is dry and no heat is added or taken away as the air ascends, it cools at the rate of 1.0C per 100 meters. This is known as the dry adiabatic lapse rate. Once a cloud has begun to form, the cooling effects caused by the expansion of the rising air are partially offset by the heat released during the condensation process. Evaporation causes cooling. When condensation occurs, the reverse is true; heat is added. If the rate of ascent of air, which may be called the updraft speed (Sloane and Tesche 1991), is quite high, the air may cool so fast that condensation cannot proceed fast enough to keep the air at saturation. In this case the air may become supersaturated. The equations show that once this happens the smaller droplets grow m ore rapidly than the large ones. The final condition is one with clouds having a narrow range of droplet sizes. The main processes which influences cloud formation are condensation or deposition (Brasseur et al 1999). The difference in temperature always causes a difference in atmospheric pressure, which in turn causes the wind. When the resulting winds are confined to small areas, not more than a few miles in extent, they blow directly from high pressure to low pressure, as one would expect. Weather front can be identified as a boundary between air masses of hot and cold air (Brasseur et al 1991). The main types of fronts are cold front and warm front, stationary front and occluded front. The typical wind circulation about a well-developed low or a well-developed stationary high is often useful in predicting lower-level winds. Several hundred feet above the ground, these circulatory winds blow nearly parallel to the isobars. Fronts are always described as zones of transition, the types of the front depends upon the direction and air masses (Sloane and Tesche 1991). The cold front, extending southward and southwestward from the low center, is also a wedge of cold air underlying warm air -but an a ctive, undercutting wedge, a steeper wedge than the warm front, a wedge that is steadily advancing eastward and southeastward in such a way as to crowd out the warm air more or less violently and to thrust it aloft. The warm front extends east and southeast from the low center, with the warm sector advancing behind it from the southwest and the colder air retreating slowly ahead of it towards the north (Sloane and Tesche 1991). Occlusion is the combination of warm and cold fronts where the latter has overtaken the former. The occlusion itself usually extends gradually southward as more and more of the warm sector is forced above the surface by the closing wedges of colder air. Stationary front is defined as a front which does not move (Sloane and Tesche 1991). Weather Systems: hurricanes, tornadoes, thunderstorms The term hurricane is usually used to describe tropical storms and cyclones. Also, hurricane can be defined as the strongest level of wind according to the Beaufort scale. Unstable air above these steaming areas of warm and azure sea is continually building up

Home visit Essay Example | Topics and Well Written Essays - 500 words

Home visit - Essay Example When the cardiac output decreases, the heart is not able to circulate the blood from the lungs and other body parts leading to the inadequate supply of oxygen and nutrients (Grand Canyon University, 2014). Hypertension is a chronic medical condition that occurs in instances when the force of the blood against the artery wall is high causing various health complications such as heart disease and coronary artery disease. Atrial fibrillation is a sporadic and a rapid heart rate that usually causes poor blood flow to the body. The atria and the ventricle chambers beat out of coordination in an irregular pattern causing the poor flow of blood. Dyspnea refers to the sensation of labored or difficult breathing that heralds serious complication in the lungs or the heart. Increase inaccumulated fat may result to obesity and it is usually signified by an increase in weight. Cheat pain may herald the occurrence of heart problem though may occur because of chest infections. According to the simulated â€Å"Home Visit with Sallie Mae Fisher† video, the following evidences reveal the four major complications affecting the patient. Sallie Mae Fisher has a history of the chronic congestive heart failure whereby in the past six months she has been hospitalized four times in order to receive medication of her deteriorating heart failure. Her problem with hypertension is evident from her history because her blood pressure is 90/56 (Grand Canyon University, 2014). Her history with atrial fibrillation indicates that Sallie Mae Fisher has the ailment. Sallie Mae Fisher’s dyspnea condition is evidenced by the fact that the previous Saturday she was discharged from the hospital after a three-day stay to treat the condition. Her complication with obese is indicated by the 8- pound increase in her weight. The continuous exacerbation of Sallie Mae Fisher’s CFH evidence the chest pain she is undergoing. In order to manage her ill condition, Sallie Mae Fisher is required to observe