Climate changes, so what is it supposed to be in the future?
Global consequences of climate change
Temperature and rainfall. Expected warming rates in XXI century will be in way it never was before. Especially strong warming will be in high latitudes of the North hemisphere. Climate zones will shift towards the poles. Average quantity of rainfalls will increase, but in the separate regions it is supposed to be increasing and decreasing of rainfall level as well. On the most territories where increasing of average quantity of rainfalls is expected, considerable year fluctations, alternation of draughts and floods will be observed.
Glaciers continue universal deviation. On the North hemisphere snow cover, eternal freeze and extension of sea ice will intensively decrease.
World Ocean Level is expected to rise on 9-88cm according to the whole diapason of possible greenhouse gas emissions. Such rising will be the result of ocean’s warm expanding, glaciers and ice pole peaks melting. It will increase the risk of littoral floods, earth sinking in the littoral and island states and especially in river deltas.
Negative influence, according to the forecasts, will prevail on the most part of the planet, especially on tropic and sub tropic zones, where most part of developing countries are situated. The problem of water deficiency in the droughty regions will be strained.
Warming and rising of the sea level will cause change of the ecosystem ecological productiveness in the time of increasing risk of some plants and animal species extinction. The danger threatens the most sensitive ecosystems as coral reefs, mangra forests, high mountain ecosystems, natural pastures and ecosystems of eternal freeze area. Native folks and local societies, which are environment dependent, will suffer first of all.
Influence of increasing of the CO2 concentration will raise the primary productiveness of plants. However, it is expected that more and more significant changes will be made in the ecosystems owing to such dangerous occurrences as fires, draughts and invasion of pests or exotic species. On the territories with moderate climate the harvest will increase on the small temperature rise, but will fall on more significant changes. At the most part of tropic and sub-tropic regions the crop yield will decrease almost at any temperature rising.
Forest and peat fires will cause increasing of atmosphere air pollution in the cities, and therefore the risk of chronic diseases and mortal cases among sick people. Climate change will negatively influence on human health, especially in the tropic and sub-tropic countries because of the heat, floods and storms, and threw influence of disease transferors. Increasing of mortal cases from the infection diseases such as malaria, Dengue fever, cholera, etc. are expected.
27-04-2006
Source:
IPCC Third Assessment Report, 2001