Impacts global warming

 

Impact of Global Warming

Scientists use computer models of temperature, precipitation patterns and atmospheric circulation to study global warming. Based on these models, scientists have made some forecasts about the impact of global warming on the weather, sea levels, coastal, agricultural, wildlife and human health.

Weather
Scientists predict that during global warming, the area north of the Northern Hemisphere (Northern Hemisphere) would heat up more than other regions on Earth. As a result, mountains of ice will melt and the land will shrink. Will be less ice will float on northern oceans. The regions that previously experienced mild snow, probably will not experience it again. In the mountains in temperate regions, snow-covered part will be less and will melt faster. Planting season will be longer in some areas. Temperatures in the winter and at night would tend to increase.


Warmer regions will become more humid as more water evaporates from the oceans. Scientists are not quite sure if the humidity will actually increase or decrease the warming even further. This is because water vapor is a greenhouse gas, so that its presence will increase the insulation effect on the atmosphere. However, more water vapor which will also form more clouds, so it would reflect sunlight back into space, where this will decrease the heating process (see the water cycle). High humidity will increase rainfall, on average, about 1 percent for every degree Fahrenheit of warming. (Rainfall in the world has increased by 1 percent in the last hundred years) [21]. Storms will become more frequent. In addition, the water will evaporate more quickly from the soil. As a result, some areas will become drier than before. The wind will blow harder and perhaps with a different pattern. Typhoon (hurricane) which draws its strength from the evaporation of water, will become larger. Contrary to the warming that occurred, some very cold periods may occur. Weather patterns become more extreme and unpredictable.
Higher sea levels
Changes in the average height of sea level measured from the area with a stable geological environment.

As the atmosphere warms, the surface layer of the oceans will also warm, so the volume will expand and raise the sea level. Warming will also melt more ice at the poles, especially around Greenland, which further increase the volume of water in the sea. Sea levels around the world has risen 10-25 cm (4-10 inches) during the 20th century, and IPCC scientists predict a further rise of 9-88 cm (4-35 inches) in the 21st century.

Changes in sea levels will profoundly affect the lives in coastal areas. Increase of 100 cm (40 inches) would submerge 6 percent of the Dutch area, 17.5 percent of the area of ​​Bangladesh, and many islands. Erosion of cliffs, beaches, and dunes will increase. When the high seas reached the mouth of the river, the flood tide due to increase in the mainland. Rich countries will spend huge funds to protect coastal areas, while poor countries may only be able to evacuate from coastal areas.

Even a small rise in sea levels will greatly affect coastal ecosystems. Increase of 50 cm (20 inches) would submerge half of coastal marshes in the United States. New marshes will also be formed, but not in urban areas and areas that have been built. This sea level rise will cover much of the Florida Everglades.

Agriculture
One might assume that a warmer Earth will produce more food than ever before, but it is actually not the same in several places. Southern parts of Canada, for example, may benefit from the higher rainfall and more length of the growing season. On the other hand, the semiarid tropical farmlands in some parts of Africa may not be able to grow. Desert farm regions that use irrigation water from distant mountains may suffer if the snowpack (snow collection) winter, which serves as a natural reservoir, would melt before the peak growing season months. Food crops and forest insect and can experience a more severe disease.

Animals and plants
Animals and plants are living things that are difficult to avoid the effects of warming because most of the land has been controlled by humans. In global warming, animals tend to migrate towards the poles and up mountains. Plants will change the direction of growth, seeking new areas as old habitats grow too warm. However, human development will prevent this migration. Species that migrate north or south hindered by the cities or agricultural lands may be dead. Some types of species that are not able to rapidly move toward the poles, may disappear.

Human health
Changes in weather and seas could lead to the emergence of diseases associated with heat (heat stroke) and death. Hot temperatures can also lead to crop failures that will appear hunger and malnutrition. Changes in extreme weather and sea level rise due to melting Arctic ice cap could lead to diseases associated with natural disasters (floods, storms and fires) and deaths due to trauma. The emergence of natural disasters are usually accompanied by the displacement of people into refugee camps where disease often appear, such as: diarrhea, malnutrition, micronutrient deficiencies, psychological trauma, skin diseases, and others.

Ecosystem shift could have an impact on the spread of waterborne diseases (Waterborne diseases) and the spread of disease through vector (vector-borne diseases). Such as the increasing incidence of dengue fever since the advent of space (ecosystem) new breed mosquitoes.

Environmental degradation caused by sewage pollution in the river also contributes to waterborne diseases and vector-borne disease. Coupled with air pollution emissions of these gases are not controlled factory will further contribute to respiratory diseases like asthma, allergies, coccidiodomycosis, chronic heart and lung disease, and others.@I-gist