1. JABATAN KEJURUTERAAN AWAM DAN STRUKTUR
FAKULTI KEJURUTERAAN DAN ALAM BINA
KKKH 4284 PERANCANGAN BANDAR LESTARI
SEMESTER 2 2013/2014
TASK 6: GLOBAL WARMING
NAME : YONG SIEW FENG
NO. MATRIC : A133075
LECTURER : Prof. Ir. Dr. RIZA ATIQ ABDULLAH BIN O.K. RAHMAT
Dr. MUHAMAD NAZRI BIN BORHAN

2. Supposed you are living in a coastal city. The city administrator has noticed that the mean
sea level has been rising for the past 50 years. The raising is small but over a long period
of time it may cause problems in the city centre as the level of that part of the city is quite
low. If you are hired as a consultant, write a plan of action on what can be done to reduce
or mitigate the problems.
Your report must include Mitigation and Adaptation measures.
1.0 INTRODUCTION
Current sea level rise is about 3 mm/year worldwide. According to the US National
Oceanic and Atmospheric Administration (NOAA), "this is a significantly larger rate
than the sea-level rise averaged over the last several thousand years", and the rate may be
increasing. This rise in sea levels around the world potentially affects human populations
in coastal and island regions and natural environments like marine ecosystems. Two main
factors contribute to observed sea level rise. The first is thermal expansion: as ocean
water warms, it expands. The second is from the melting of major stores of land ice like
glaciers and ice sheets.Global warming also has an enormous impact with respect to
melting glaciers and ice sheets. Higher global temperatures melt glaciers such as the one
in Greenland, which flow into the oceans, adding to the amount of seawater. A large rise
(on the order of several feet) in global sea levels poses many threats. According to the
U.S. Environmental Protection Agency (EPA), ―such a rise would inundate coastal
wetlands and lowlands, erode beaches, increase the risk of flooding, and increase the
salinity of estuaries, aquifers, and wetlands.‖
Sea level rise is one of several lines of evidence that support the view that the climate has
recently warmed. The global community of climate scientists confirms that it is very
likely human-induced (anthropogenic) warming contributed to the sea level rise observed
in the latter half of the 20th century. So there is necessary for a consultant to identify a
planof action to reduce or mitigate the problems.

3. 2.0 MITIGATION
2.1 Energy Conservation
Energy conservation refers to reducing energy through using less of an energy service.
Energy conservation differs from efficient energy use, which refers to using less energy
for a constant service. For example, driving less is an example of energy conservation.
Driving the same amount with a higher mileage vehicle is an example of energy
efficiency. Energy conservation and efficiency are both energy reduction techniques.
Even though energy conservation reduces energy services, it can result in increased,
environmental quality, national security, and personal financial security. It is at the top of
the sustainable energy hierarchy.
Term energy conservation refers to different methods and processes that have the main
purposein reducing the total amount of energy that is currently being used by industry,
households andvarious other sectors of our society. Energy conservation is important
from many different perspectives. Energy conservation methods are also extremely
important from the environmental point of view because we are still heavily dependent
on fossil fuels, and by reducing our energyneeds we are also reducing the global level of
greenhouse gas emissions that contribute toclimate change and global warming.There are
various ways on which you can contribute to energy conservation.
a. Promoting customer rebates for energy efficiency.
b. Making all municipal buildings energy efficient.
c.Creation of green space and park out of city
d.Planning for the car with odd and even number in alternative days.
e. Not always using your car, insteadchoosing either walking or riding the bike.
There is wide range of energy sources that provide energy needs with minimal impact on
theenvironment through using technologies with high energy-conversion efficient
designs.However, the use of these resources in an environmentally acceptable manner

4. while providingfor the needs of growing populations and developing economies is a great
challenge. Thefollowing are the main sources of energy:
a.Solar Energy
Solar energy refers to the conversion of the sun’s rays into useful forms of energy, such
as electricity or heat. The amount of solar radiation a location receives depends on a
variety of factors including geographic location, time of day, season, local landscape, and
local weather. Solar energy, radiant light and heat from the sun, is harnessed using a
range of ever-evolving technologies such as solar heating, solar photovoltaics, solar
thermal electricity, solar architecture and artificial photosynthesis.When converted to
thermal (or heat) energy, solar energy can be used to:
Heat water – for use in homes, buildings, or swimming pools.
Heat spaces – inside homes, greenhouses, and other buildings.
Solar energy can also be converted into electricity:
Photovoltaic (PV) or solar cells change sunlight directly into electricity.
Concentrating Solar Power Plants generate electricity by using the heat from solar
thermal collectors to heat a fluid which produces steam. The steam is used to
power a turbine and generate electricity.
b.Wind Energy
Wind is simply air in motion. Winds are created by the sun's uneven heating of the
atmosphere in combination with the irregular surface of the earth and the earth's rotation.
These winds can be "harvested" using wind turbines and used to make electricity. The
force of the wind makes the wind turbine blades spin, and the energy of this motion is
converted into electricity by a generator. Wind turbines, like windmills, are mounted on
atower to capture the most energy. At 100 feet (30 meters) or more aboveground, they
can takeadvantage of the faster and less turbulent wind. Turbines catch the wind's energy
with their propeller-like blades. Wind turbines can convert the energy in the wind into
mechanical power that can be used for a variety of activities like pumping water. Wind

5. turbines can also use generators to convert wind energy into electricity.Several electricity
providers today use wind plants to supply power to their customers.Wind energy is a free,
renewable resource. Its use does not affect its future supply.
c. Biomass Energy
The term "biomass" refers to raw organic material used to generate a number of energy
resources, including heat, liquid or gaseous fuels, and electricity. Chemical energy stored
in biomass can be converted to heat through combustion (burning). Biomass can be
converted to liquid or gaseous fuels or can be used to generate electricity in the same way
that coal is used. The electricity generated can be sent to energy consumers via electric
transmission systems. These applications can be at a small scale (e.g., to cook or make
hot water in individual buildings) or at a large scale (e.g., to generate ethanol, biodiesel,
biogas, or electricity for general distribution.
d.Hydrokinetic Energy
Hydrokinetic energy is the energy that can be captured from flowing water that occurs in
rivers or ocean currents. This includes ocean wave energy, tidal energy, river in-stream
energy, and ocean current energy.Hydro is also aflexible source of electricity since plants
can be ramped up and down very quickly to adapt tochanging energy demands. However,
damming interrupts the flow of rivers and can harm localecosystems, and building large
dams and reservoirs often involves displacing people andwildlife. Once a hydroelectric
complex is constructed, the project produces no direct waste, andhas a considerably lower
output level of the greenhouse gas carbon dioxide (CO2) than fossilfuel powered energy
plants.
2.2 Transportation
The transportation sector includes the movement of people and goods by cars, trucks,
trains,ships, airplanes, and other vehicles. The majority of greenhouse gas emissions
fromtransportation are CO2 emissions resulting from the combustion of petroleum-based
products,like gasoline, in internal combustion engines. The largest sources of
transportation-relatedgreenhouse gas emissions include passenger cars and light-duty

6. trucks, including sport utilityvehicles, pickup trucks, and minivans. These sources
account for over half of the emissions fromthe sector. The remainder of greenhouse gas
emissions comes from other modes of transportation, including freight trucks,
commercial aircraft, ships, boats, and trains as well as pipelines and lubricants.Relatively
small amounts of methane (CH4) and nitrous oxide (N2O) are emitted duringfuel
combustion. In addition, a small amount of hydrofluorocarbon (HFC) emissions are
includedin the transportation sector. These emissions result from the use of mobile air
conditioners andrefrigerated transport.Transportation planners should assess and
regularly monitor regionaltransportation system vulnerabilities to climate impacts, design
new transportation projects to beresilient to end-of-century sea-level rise, and prioritize
retrofits for existing infrastructure for assets that are of significant regional economic
value or are irreplaceable, and those that cannot be relocated and would not otherwise be
protected.There are a variety of opportunities to reduce greenhouse gas emissions
associated withtransportation.
2.3 Expand Tree Canopy
Tree canopy (TC) is the layer of leaves, branches, and stems of trees that cover the
ground whenviewed from above. The benefits of trees are widely known. They absorb
CO2, produce clean air and provide shade. However, despite these ecological services,
many cities lack significant tree cover. Impervious layers of concrete and asphalt have
replaced natural ground cover and trees, significantly contributing to warming cities
through the urban heat island effect. We argue in this article that the asphalt network of
roads and parking lots—key elements of gray infrastructure—are prime targets for
garnering the benefits of the urban forest. The Action Plan proposes to maintain tree CO2
uptake at 6.23 million metric tons to ensure that the state can continue to reap the benefits
of urban forestry and proposes two important goals for 2025: increasing canopy cover to
establish a 3% emission offset and reaching 30% canopy coverage in areas with density
greater than 500 people per square mile (Florida Climate Action Plan, 2008). Reaching
these objectives will require the planting of at least 6.7 million trees a year. As a result,
3.5 million short tons of coal, or 76,000 cubic feet of natural gas, totaling $759 million
could be saved (Florida Climate Action Plan, 2008). Beyond carbon removal, urban

7. forests provide additional benefits. Tree canopy provides many benefits to communities
by improving water quality, saving energy, lowering ambient temperatures, reducing air
pollution, enhancing property values, providing wildlife habitat, facilitating social and
educational opportunities, and providing aesthetic benefits.
Figure: Canopy roads add shade to the public right of way and contribute to pollution
removal.
3.0 ADAPTION
3.1 Sewer and Drainage Upgrade
Titus et al. (1987) examined the replacement of a century-old street drain in Charleston,
South Carolina (Titus et al. 1987). If designed for the current 5-year storm, such a system
might be insufficient if sea level rises one foot or the severity of the design storm
increases 10 percent, necessitating a completely new system long before the end of the
project's useful life. On the other hand, installing slightly larger pipes sufficient to

8. accommodate climate change might cost only an additional 5 percent. In such a case,
designing for an increases in precipitation might prove to be worthwhile if these changes
occur; even if they do not occur, there would be some benefits because the system would
provide protection during the more severe 10-year storm. Wilcoxen (1986) made a
similar argument regarding the location of San Francisco's West Side Sewage Transport.
Similar situations will occur throughout the world.
3.2 Commercial Forest
Because some commercial tree species live as long as 70 years before being harvested,
forest products companies may want to reconsider location and types of species. For
example, some types of Douglas fir need at least a few weeks of cold winter temperatures
to produce seeds. Currently, companies concentrate planting efforts at the bottoms of
mountains, from which logs can be most readily transported; considering future warming
may lead them to plant further up the mountain or in colder regions.
3.3 Land Use
Purchasing Land could keep options open for water resources management and
protecting ecosystems. In regions where climate becomes drier, additional reservoirs may
eventually be necessary. However, because accurate forecasts of regional climate change
are not yet possible, water managers in most areas cannot yet be certain that they will
need more dams. Nevertheless, it may be wise to purchase the necessary land today;
otherwise, the most suitable sites may be developed, making future construction more
expensive and perhaps infeasible. A number of potential reservoir sites should be
protected by creation of parks and recreation areas.
3.4Assessment, Research and Education
Strategic assessments seek to determine whether, when, and how one should respond to
global warming, based on what we know today. These expenditures could often be
economically justified in cases where immediate physical responses could not be. Most
of the impacts of climate change could at least theoretically be mitigated, but in many

9. cases, effective solutions have not yet been developed. Like strategic assessments, the
value of the research is potentially the savings it makes possible.
Efforts to prepare for climate change can only be as enlightened as the people who must
carry them out. Education must be critical component of any effort to address the
greenhouse effect because (1) there will be an increased need for personnel in some
professions, (2) people in other professions will need to routinely consider the
implications of global warming, and (3) an informed citizenry will be necessary for the
public to support the public expenditures and institutional changes that may be required.
4.0 CONCLUSION
Because of the severity of the potential impacts, it is completely appropriate for policy
makers and the public to focus primarily on measures to limit the extent to which
humanity raises the earth`s temperature in the years ahead, an issue outside the domain of
most planners. Nevertheless, past and current emissions suggest that it is too late to
completely prevent a change in climate, so we will have to learn to live with the
consequences. Although planners are sometimes frustrated by the futility of focussing
politicians' attention on events beyond the next election, global warming may be an
opportunity to help them show the voters that they are thinking about the type of world
we pass on to future generations. But whether the politicians lead or follow, they public
will have to decide the type of world we plan to achieve: If something has to give, should
our priority be to maintain current patterns of land and resource use, to avoid tax
increases, or to protect the environment?For communities and governments to
successfully counter the severe impacts of global climate change, mitigation and
adaptation strategies must be intertwined and complementeach other.