climate change lecture

7/30/2019 Climate Change Lecture

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What is it all About?

(A bit of down to earth science)

How Bad will it Be?

(Impacts and vulnerability)

What Can we Do about it?

(Solutions)


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PFCs

HFCs

SF6

Greenhouse gases(GHGs) trap heat fromthe sun to keep theEarth warm.

H2O

Water vapor

CO2

Carbon Dioxide

CH4

Methane

NO2

Nitrous Oxide

CO2

CH4

N2OHFCs

PFCs SF6

CO2CO2

CH4CO2N2OCH4

HFCs

SF6

SF6

CO2 CO2

CO2

CO2

CO2CO2 CO2

CH4

N2O

Increasing levels of GHGsin the atmosphere makefor a warmer world leadingto abrupt changes inclimate!

The Greenhouse Effect


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4

3

52

1

Human-made greenhousegases.


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Source: 1994 Philippine GHG

Inventory

TOTAL: 103,085 ktCO2

(50,038 kt CO2)(9,198 kt CO2)

(33,137 kt CO2) (10,711 kt CO2)

GHG Sources in Phil.


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Whats it allabout?To summarize

World has gottenwarmer.

It will continue toget hotter in this

century andbeyond.

We are causingthis dangeroustrend.


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Direct Observationsof Recent Climate

Change

There is observational evidenceof increase intensity oftropical cyclone activity inthe North Atlantic since 1970

correlated with the increasein sea surface temperature.

Cold days, cold nightsand frost have

become less frequent.While hot days, hotnights, and heatwaves have becomemore frequent.

More intense and longer droughtssince 1970 particularly in thetropics and subtropics due toincrease in temperature anddecrease in precipitation.

Source: IPCC 4th Assessment Report: Summary for Policy-makers


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Regional Effects of CC in Asia

AgricultureMany crops grown in Asia are very sensitive to soil

moisture and temperature, and global warming may upset

a delicate balance and reduce crop yields here.


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AcrossSociety

Vulnerable sectors Agriculture

Freshwater

Health

Biodiversity Forests

ENSO drought events and rice

1 oC increase leads to15% decrease in rice yield

From: www.sciencentral.com: Cassman, IRRI, National Academy of Sciences
http://www.sciencentral.com/http://www.sciencentral.com/


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What can/should we do?

Adaptation

Energy

Forestry

Waste

Agriculture

Industry

Mitigation- Actions which are adoptedto reduce the effects

of anthropogenic activities

on the global climate.

- Adjustments in practices,

processes, or structures of

systems to projected

changes of climate

MCLE International Law Implications of Climate Change, 23 March 2007


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Energy and Transport:

Renewable energy (solar, wind,biomass, tide, hydro, etc.)

Energy efficiency, conservation

Alternative fuels (e.g. biofuel)

Public and alternative transport,traffic management

Waste

Solid waste and wastewatermanagement

Methane capture

Land use and forestry

Reforestation, afforestation

Urban land use planning Agriculture

Agriculture residuemanagement

Animal waste management

Mitigation

Measures and

Strategies


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In the Philippines

AdaptationMeasuresGeo-hazard mapping:identify areas that aremost vulnerable tolandslides and forewarncommunities

Completed geo-hazardmapping of 27 provinceslocated in easternSeaboard (most vulnerableto typhoons)Source: Department of Environment and

Natural Resources (DENR)


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In the Philippines

Other GovernmentProgramsBio-fuels Program

EthanolJethropa (Initial 375,000Ha allocated forproduction

CoCo-DieselCompressed Natural GasSource: Department of Environment and

Natural Resources (DENR)


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Whenever possible, walk or bike. Use mass transit Promote and use alternative cleaner

fuels - biodiesel, bioethanol Support renewable energy -solar, wind, biomass Use energy efficient appliances


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Some offices switch off aircons and light during

lunch break and one hour before end of office hours


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Promote and

organize

carpools in your

neighborhood,

office, schools

Use mass transit

Walk or bike


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Do not burn

your wasteincludingagriculturalwaste Supportreuse and

recyclingprograms


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Protect remaining forest resources


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Consume responsibly


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Change ourcarbon-based way of

working and living

Manage (conserve, optimize) our food

and water and energy supplies

Strengthen the role of localgovernments in disaster managementand in environmental protection andmanagement

Move people out of harms way

What can/should wedo? In summary


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Serve as Channels of Information by sharing the

behavioral concept of Carbon reduction

and Channels of Inspiration by Personally beingon the Low Carbon Diet in the School, at Home,

in the Office, in the Car and Anywhere at

Anytime


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SHARED RESPONSIBILITY

we should not wait..

we cannot wait..we must not wait

Al Gore


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MaramingSalamat

Po!

climate change lecture

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