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    ES GTU Study Material E-Notes Chapter-8 12012020013605PM

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    The document discusses several key environmental issues: - Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide and can harm plants, animals, and infrastructure. - Depletion of the ozone layer refers to decreases in total ozone in the atmosphere and springtime polar ozone holes caused by ozone-depleting substances. - The greenhouse effect is the warming of the planet's surface due to gases in the atmosphere that trap radiation, and global warming refers to long-term rising temperatures due to climate change.

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    ES GTU Study Material E-Notes Chapter-8 12012020013605PM

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    22 views15 pages
    The document discusses several key environmental issues: - Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide and can harm plants, animals, and infrastructure. - Depletion of the ozone layer refers to decreases in total ozone in the atmosphere and springtime polar ozone holes caused by ozone-depleting substances. - The greenhouse effect is the warming of the planet's surface due to gases in the atmosphere that trap radiation, and global warming refers to long-term rising temperatures due to climate change.

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    3110007 ES GTU Study Material E-Notes Chapter-8 12012020013605PM

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    The document discusses several key environmental issues: - Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide and can harm plants, animals, and infrastructure. - Depletion of the ozone layer refers to decreases in total ozone in the atmosphere and springtime polar ozone holes caused by ozone-depleting substances. - The greenhouse effect is the warming of the planet's surface due to gases in the atmosphere that trap radiation, and global warming refers to long-term rising temperatures due to climate change.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    22 views15 pages

    ES GTU Study Material E-Notes Chapter-8 12012020013605PM

    Uploaded by

    RIP
    The document discusses several key environmental issues: - Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide and can harm plants, animals, and infrastructure. - Depletion of the ozone layer refers to decreases in total ozone in the atmosphere and springtime polar ozone holes caused by ozone-depleting substances. - The greenhouse effect is the warming of the planet's surface due to gases in the atmosphere that trap radiation, and global warming refers to long-term rising temperatures due to climate change.

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    Download as pdf or txt
    of 15

    Environmental Global

    Issues

    Vitrag .C. Dholakia


    vitrag.dholakia @darshan.ac.in

    Darshan Institute of Engineering & Technology


    Introduction

    Unit – 1 Introduction Darshan Institute of Engineering & Technology


    Introduction
     Environmental issues are
    harmful effects of human
    activity on the biophysical
    environment. Environmental
    protection is a practice of
    protecting the natural
    environment on individual,
    organizational or
    governmental levels, for the
    benefit of both the
    environment and humans

    4 Darshan Institute of Engineering & Technology


    Acid Rain

    5 Darshan Institute of Engineering & Technology


    Acid Rain
     Acid rain is a rain or any other form of precipitation that is
    unusually acidic, meaning that it has elevated levels of hydrogen
    ions (low pH).
     It can have harmful effects on plants, aquatic animals and
    infrastructure. Acid rain is caused by emissions of sulfur dioxide
    and nitrogen oxide, which react with the water molecules in the
    atmosphere to produce acids.
     Acid rain has been shown to have adverse impacts on forests,
    freshwaters and soils, killing insect and aquatic life-forms, causing
    paint to peel, corrosion of steel structures such as bridges, and
    weathering of stone buildings and statues as well as having
    impacts on human health.

    6 Darshan Institute of Engineering & Technology


    Acid Rain

    7 Darshan Institute of Engineering & Technology


    Acid Rain

    8 Darshan Institute of Engineering & Technology


    Depletion of the ozone layer

    9 Darshan Institute of Engineering & Technology


    Depletion of ozone layer
     Ozone depletion consists of two related
    events observed since the late 1970s: a
    steady lowering of about four percent in
    the total amount of ozone in Earth's
    atmosphere (the ozone layer), and a
    much larger springtime decrease in
    stratospheric ozone around Earth's
    polar regions.
     The latter phenomenon is referred to as
    the ozone hole. There are also
    springtime polar tropospheric ozone
    depletion events in addition to these
    stratospheric events.

    10 Darshan Institute of Engineering & Technology


    Depletion of ozone layer

    11 Darshan Institute of Engineering & Technology


    Green House Effects

    12 Darshan Institute of Engineering & Technology


    Green House Effects
     The greenhouse effect is the process by which radiation from a
    planet's atmosphere warms the planet's surface to a temperature
    above what it would be without this atmosphere.
     Radiative active gases (i.e., greenhouse gases) in a planet's
    atmosphere radiate energy in all directions. Part of this radiation is
    directed towards the surface, warming it.
     The intensity of the downward radiation – that is, the strength of
    the greenhouse effect – will depend on the atmosphere's
    temperature and on the amount of greenhouse gases that the
    atmosphere contains.

    13 Darshan Institute of Engineering & Technology


    Green House Effects

    14 Darshan Institute of Engineering & Technology


    Global Warming
     Global warming is a long-term rise in the average temperature of
    the Earth's climate system; an aspect of climate change shown by
    temperature measurements and by multiple effects of the
    warming.
     In the modern context the terms global warming and climate
    change are commonly used interchangeably, but climate change
    includes both global warming and its effects, such as changes to
    precipitation and impacts that differ by region.
     Many of the observed changes in climate since the 1950s are
    unprecedented in the instrumental temperature record, and in
    historical and paleoclimate proxy records of climate change over
    thousands to millions of years.

    15 Darshan Institute of Engineering & Technology


    Global Warming

    16 Darshan Institute of Engineering & Technology

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