rekling07 pemanasan global

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PEMANASAN GLOBALArif Rahman, ST MT

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Pencemaran Udara

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PolutanOksida Karbon (COx),Oksida Sulfur (SOx),Oksida Nitrogen (NOx),Amoniak (NH3)Gas Senyawa Organik, misal metanaChlorofluorocarbons (CFCs)Aerosol partikel halusLogam beracun, misal Cd, CoRadioaktifBau

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Polutan

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Sumber Polutan

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Pemanasan Global

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Pemanasan Global

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Pemanasan Global

Efek rumah kaca (Greenhouse Effect)Penipisan ozon (Ozone Depletion)Perubahan iklim (Climate Change)Hujan asam (Acid Rain)

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Efek Rumah Kaca

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Penipisan Ozon

The ozone layer forms in the upper atmosphere when UV radiation reacts with oxygen (O2) to form ozone (O3). The ozone absorbs UV radiation and thus prevents it from reaching the surface of the earth where it would damage the DNA of plants and animals. Various air pollutants, such as chlorofluorocarbons (CFCs), enter the upper atmosphere and break down ozone molecules.

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Penipisan Ozon

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Penipisan Ozon• CFCs have been used as

refrigerants, as propellants in aerosol sprays, and in the manufacture of plastic foams.

• When ozone breaks down, the ozone layer thins, allowing UV radiation to penetrate and reach the surface of the earth.

• Areas of major ozone thinning, called ozone holes, appear regularly over Antarctica, the Arctic, and northern Eurasia.

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Penipisan Ozon

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Penipisan Ozon

These images of the ozone hole were taken by NASA between September 1981 and September 1999.

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Penipisan Ozon

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan IklimOcean Conveyor Belt

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan Iklim

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Perubahan IklimDisaster

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Perubahan Iklim

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Perubahan IklimDeforestration/Desertification

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Perubahan IklimAlgal bloom /Eutrophication

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Perubahan Iklim

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Hujan Asam

COX + H2O H2CO3 H+ + CO32-

NOX + H2O HNO3 H+ + NO3-

SOX + H2O H2SO4 H+ + SO42-

(rain, snow) (particulates, gases)COX

NOX

SOX

NH3 + H+ NH4+

NH3

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Hujan Asam

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Hujan Asam

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Selamatkan bumi bersama

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Akhir Perkuliahan…Akhir Perkuliahan…

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