7.3 indicators and effects of climate change

global warming

an increase in globak avearge temperature

changing wind and precipitation patterns

changes in heat distribution over earths surface led to changes in wind patterns the speed frequency and direction of winds over earths surface have flucuated unpredictabeoy for several years researchers believe that unusual wind patterns gave helped increase thw melting of ice in arctc hight temperatures increase the rate of evaporation when warm moist air rises and cools in the upper atmosphere it produces rain or snow f g f g g g g g

changing biomes

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shrinking wetlands and efforts to save them

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deforestation

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risingsea levels and ocean acidity. changes in polar and glacial ice

effects of climatee change on earths oceans indicator rising sea level cause, half of this is due to melting of glaciers and icecaps other half is a result of the thermal expansion of seawater due to increased temperature effects more land will be covered with water coastal regions, population of people will be displaced indicator rising ocean acidity causes oceans have absorbed about half of all co2 produced from foosil fuel emissions , some of the dissolved gas froms carbonic acid which lowers the ph of the water sn makes it more acidic effects. threatens corsl and organism to build shells and hard skeletons ability fish and plankton to reproduce commercial fishers who supply food to humans will decrease coastal areas would be more vulnerable to storms

desertificatiom droughts and other outcomes. precipitation

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storm intensity and frequecny

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climate and health

not only risk of diseases and infections, but also injury death due to extreme conditions such as hest waves flood tornadoes snowstorms lightnening strick some of the serious diseases are carried by insects, birds, rodents ex hantavirus is carried by mice like the deer mouse outbreaks of this dieseas enad malaria and plague seem to increase during periods of higher temperatures risk of waterbone rises too as climate change affects rainfall and temperature waterborne is caused by microscopic orgnisms that live in water supplies increasing temperatures affect the amount of dust in the air he growth of mould and the release of pollen by many plants these substances may act as allergens and could cause astham attacks as air quality worsens. people who have allergies or respiratory problems will have to reduce outdoor activites people msy require medical help which increases health cost

2 risingsea levels and ocean acidity. changes in polar and glacial ice

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changes in polar and glacial ice

satellites have shown that large amount of ice in greenlamd and amtarctica have been melting at higher rates in recent years ex the overall loss of mass in the antarctica ice sheet has been approcimstely 65km3 per yeae that amount of melting releases enough water to raise sea keveks by about .16 mm per year the process rhat forms ice sheet is complex, some ice sheets thicken while other grow thinner though th general trend has been to an overall shrinking of earths ice cover

intro

the largest single indicator of climate change has been global warming the ratebof increase had accelerated since the 1960s this warminf is an average for the entire planet which means that some areas have experienced warming and others grown cooler durin this period snd d d d d s d

impacts of melting ice. changes in polar and glacial ice

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