Processing & Properties of Floor and Wall Tiles.pptx
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1. TECHNICAL SEMINAR ON
Global Warming and Climate Change
Prepared by
Chetan Narasimha P
USN-4KV19CV006
Guided by
Prof.Abdul Mujeeb
Asst.Professor
Department of Civil Engineering
KVGCE, Sullia
Visvesvaraya Technological University, Belgavi
K V G College of Engineering, Sullia D.K – 574 327
Department of Civil Engineering
2022-23
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CONTENTS
INTRODUCTION
CAUSES OF GLOBAL WARMING
EFFECTS OF GLOBAL WARMING
IMPACTS OF CLIMATE CHANGE
CASE STUDY
CONCLUSION
REFERENCE
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Global Warming and Climate Change
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INTRODUCTION
• Global warming generally refers to gradual increase in
the Earth’s tempuracture generally due to greenhouse
effect
• Greenhouse gases give positive radiative forcing (net
increase in the energy absorption by earth) due to
increase in radiatively active natural greenhouse gases
such as CO2, CH4, water vapour, N2O, O3. In addition
HFCs, PFCs and SF6.
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CAUSES FOR GLOBAL WARMING
• Overfishing
• Industrialization
• Farming
• Consumerism
• Transport and Vehicles
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1.Hotter temperature:
• Nearly all land areas are seeing more
hot days and heat waves; 2020 was
one of the hottest years on record.
• Higher temperatures increase heat-
related illnesses and can make it
more difficult to work and move
around.
Effects of Global Warming and
Climate Change:
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2.More severe storms:
• Changes in temperature cause changes in
rainfall. This results in more severe and
frequent storms.
• They cause flooding and landslides,
destroying homes and communities, and
costing billions of dollars
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3.Increased drought
• Water is becoming scarcer in more regions.
Droughts can stir destructive sand and dust
storms that can move billions of tons of sand
across continents.
• Deserts are expanding,reducing land for
growing food.
• Many people now face the threat of not having
enough water on a regular basis.
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4. A warming, rising ocean:
• The ocean soaks up most of the
heat from global warming.
• This melts ice sheets and raises
sea levels, threatening coastal and
island communities.
• The ocean also absorbs carbon
dioxide, keeping it from the
atmosphere.
• More carbon dioxide makes the
ocean more acidic, which
endangers marine life.
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5.Loss of species:
• Climate change poses risks to the
survival of species on land and in the
ocean.
• These risks increase as temperatures
climb.
• Forest fires, extreme weather, and
invasive pests and diseases are among
many threats.
• Some species will be able to relocate
and survive, but others will not.
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6.Not enough food:
• Changes in climate and increases in
extreme weather events are among the
reasons behind a global rise in hunger
and poor nutrition.
• Fisheries, crops, and livestock may be
destroyed or become less productive.
• Heat stress can diminish water and
grasslands for grazing.
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7.More health risks:
• Changing weather patterns are
spreading diseases such as malaria.
• Extreme weather events increase
diseases and deaths, and make it
difficult for health care systems to keep
up.
• Other risks to health include increased
hunger and poor nutrition in places
where people cannot grow or find
sufficient food.
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8.Climate Change:
Climate change refers to a long-
term shift in global weather
patterns and
average temperatures.
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2005: Maharashtra flood:
In 2005, a major climatic catastrophe occurred in the state of Maharashtra in
the form of massive floorings, leading to a death toll of 5000 people. The areas of
Mumbai, Chiplun, Khed, Kalyan, Ratnagiri and Raigad were completely flooded,
hence naming the date 26 July 2005 as the BLACK DAY in the history of Mumbai.
2010 Ladakh floods:
On 6th August 2010, Leh and many other villages of the Ladakh range were
drowned by a downpour that killed at least 255 people, and resulted in a state loss
of Rs. 133 crore. The unexpected heavy rainfall was attributed to the climatic
changes resulting from global warming.
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2.Drought’s:
• Warmer temperatures enhance
evaporation, which reduces surface
water and dries out soils and
vegetation.
• This makes periods with low
precipitation drier than they would
be in cooler conditions.
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3.Ice Melting:
• Polar ice caps are melting as global warming
causes climate change.
• We lose Arctic sea ice at a rate of almost 13%
per decade, and over the past 30 years, the
oldest and thickest ice in the Arctic has
declined by a stunning 95%.
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1.Temperatures:
• The Arctic and Antarctic are the world’s
refrigerator.
• Since they are covered in white snow and ice
that reflect heat back into space, they balance
out other parts of the world that absorb heat.
IMPACT’S OF ICE MELTING
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2.Shipping:
• As ice melts, new shipping routes open
up in the Arctic.
• These routes will be tempting time-
savers, but incredibly dangerous.
• Imagine more shipwrecks or oil spills like
the Exxon-Valdez in areas that are
inaccessible to rescue or clean-up crews.
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3.Rising of Sea Level:
• Global warming is causing global mean sea
level to rise in two ways.
• First, glaciers and ice sheets worldwide are
melting and adding water to the ocean.
• Second, the volume of the ocean is expanding
as the water warms.
• A third, much smaller contributor to sea level
rise is a decline in the amount of liquid water
on land—aquifers, lakes and reservoirs,
rivers, soil moisture.
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CASE STUDY 1:
Global warming is having a significant impact on
Delhi, one of the most populous and heavily polluted
cities in the world. One of the most visible impacts of
global warming is the air quality, which is already
poor due to high levels of pollutants. With increased
temperatures, the frequency and severity of
temperature inversions.
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CAUSES OF GLOBAL WARMING ON DELHI:
Factors that have caused the steady rise in pollution levels of Delhi are urbanisation,
population growth, rising income, increase in vehicle ownership, growing energy
demand and proximity to industrial hubs.
Most of these households use solid fuels such as dung, wood, crop residue etc.
Air pollution may increase risk of underlying diseases, leading to frailty and higher risk
of short-term deaths in frail individuals.
Malnutrition and diarrhoea due to food and water system degradation and an
increased incidence of vector-borne diseases are some examples of indirect effects of
climate change on human health.
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2 CASE STUDY 2:
Global warming is having a significant impact on
Jammu and Kashmir, a state located in the
northernmost part of India. The region is already facing
various environmental challenges, including
deforestation, water scarcity, and landslides. Global
warming is exacerbating these challenges and creating
new ones.
One of the most visible impacts of global warming in
Jammu and Kashmir is the melting of glaciers in the
Himalayan region. This can have significant impacts on
the region's economy and society, as agriculture,
tourism, and other industries rely heavily on these
water resources.
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CAUSES AND EFFECTS OF GLOBAL WARMING IN JAMMU AND
KASHMIR:
Causes:
Greenhouse gas emissions: The primary cause of global warming is the release of
greenhouse gases into the atmosphere, mainly carbon dioxide (CO2), methane (CH4),
and nitrous oxide (N2O). These gases trap heat from the sun, leading to a rise in
temperatures.
Deforestation: Trees absorb CO2 from the atmosphere during photosynthesis. When
forests are cleared, this process is disrupted, leading to an increase in CO2 levels.
Industrialization: The burning of fossil fuels such as coal, oil, and gas for energy and
transportation releases large amounts of CO2 into the atmosphere.
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Effects:
Melting glaciers: As mentioned earlier, global warming is causing glaciers in the
region to melt at an alarming rate. This can lead to a reduction in the availability
of water resources, which can have significant impacts on agriculture, tourism,
and other industries.
Changes in rainfall patterns: Global warming can lead to changes in the timing
and intensity of rainfall, leading to more frequent droughts and floods.
Increased frequency of extreme weather events: Global warming is causing an
increase in the frequency and intensity of extreme weather events, such as
heatwaves, floods, and landslides.
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Loss of biodiversity: The warming climate is causing shifts in the ranges and
migration patterns of many species, leading to a loss of biodiversity.
Public health impacts: As temperatures rise, there is an increase in heat-
related illnesses and diseases, such as heat stroke and dehydration.
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COCLUSION:
• In conclusion, global warming is a serious environmental issue that is causing a
wide range of negative impacts on our planet.
• The accumulation of greenhouse gases in the atmosphere is leading to rising
temperatures, sea level rise, more frequent and intense weather events, and
other environmental changes that are affecting ecosystems, economies, and
human health.
• To address this issue, it is important for individuals, businesses, and
governments to take action to reduce greenhouse gas emissions and promote
sustainable practices.
• This includes efforts to increase the use of renewable energy sources, improve
energy efficiency, reduce waste, and protect natural habitats. By working
together, we can help to mitigate the impacts of global warming and create a
more sustainable future for our planet.
