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1
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Zmiany klimatu i zasoby wodne

100%
Kosmos
|
2008
|
vol. 57
|
issue 3-4
241-249
EN
Freshwater resources are among the systems that are particularly vulnerable to climate change. Climate change affects freshwater availability, demand and use. In many areas of the Globe, the three categories of water problems (having too little water, too much water, and water pollution) are exacerbated by climate change. Climate change impacts on freshwater resources are discussed in the context of observations and model-based projections for the future. It is projected that the negative impacts of climate change on freshwater resources and related systems will outweigh its benefits. The climate-driven hydrological changes combine with other pressures on water resources, such as population growth, land-use change (e.g. urbanization, especially in coastal areas; deforestation) and changes in life styles increasing water demand and environmental pollution, creating a difficult challenge to water management. In addition, there are serious uncertainties in projections of future changes, restricting the anticipative adaptation. In high latitudes and parts of the tropics, climate models are consistent in projecting increase of precipitation and runoff, while in some subtropical and lower mid-latitude regions, they are consistent in projecting decreases of water resources.
2
Content available remote

Wprowadzenie - globalne ocieplenie klimatu

100%
Kosmos
|
2008
|
vol. 57
|
issue 3-4
173-182
EN
Global warming, and accompanying processes, such as sea level rise and shrinking of cryosphere, in the last 50 years have been unequivocal. Most of it is very likely have been caused by anthropogenic factors, such as increase of atmospheric concentration of greenhouse gases and deforestation, leading to intensification of the greenhouse effect. Illustration in the process of increase in atmospheric carbon dioxide concentration and increase of temperature, based on observational evidence, is presented. Since emissions of greenhouse gases continue to rise, we are committed to further warming in the future. The rate of the future warming depends on the path of socio-economic development and the effectiveness of global mitigation policies. Business-as-usual would lead to a large warming - in 2100 the mean annual temperature can be by 1,8-2,4oC higher than the average for 1980-1999. Climate change impacts can be tempered - avoided, reduced, or delayed if an effective global climate change mitigation policy is agreed upon and implemented.
3
Content available remote

Przedmowa - zmiany klimatu i ich skutki

63%
Kosmos
|
2008
|
vol. 57
|
issue 3-4
169-170
4
63%
EN
Material damages caused by weather-related extreme events have dramatically increased worldwide in the last few decades. Explanations of these events can be sought via changes in physical, terrestrial, climate and socio-economic systems. Some types of weather events have become increasingly extreme and strengthening of this tendency is projected for the future. Increase in intense precipitation resulting from world warming has been already observed, with all possible consequences of flooding. Human encroaching into the harm's way and increase in the damage potential in floodplains are often the dominating factors in the rising flood damages. Projections for the future, based on regional climate models, indicate increased risks of flood in many areas. Yet, risk of snowmelt and ice-jam floods has decreased for the most part of Europe. Increase in very dry land areas has been already noted. Further increase in dry land areas, and intensity, frequency, and severity of droughts is projected, due to ubiquitous higher temperatures and reduced, annual or seasonal, precipitation in some regions. Heat waves become increasingly frequent in summer affecting ageing European society. Impacts of extreme weather events are discussed, including the environmental track.
5
Content available remote

Foreword - climate changes and their impacts

63%
Kosmos
|
2008
|
vol. 57
|
issue 3-4
171-172
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