EXTREME CLIMATIC CHANGES WHICH WE HAVE SEEN IN THE RECENT PAST

EXTREME CLIMATIC CHANGES WHICH WE HAVE SEEN IN THE RECENT PAST.

WHAT IS CLIMATIC CHANGE ? • WEATHER IS THE CHANGES WE SEE AND FEEL OUTSIDE

FROM DAY TO DAY.

• CLIMATE IS THE USUAL WEATHER OF A PLACE. CLIMATE CAN BE DIFFERENT FOR DIFFERENT SEASONS.

• EARTH'S CLIMATE IS WHAT YOU GET WHEN YOU COMBINE ALL THE CLIMATES AROUND THE WORLD TOGETHER.

• CLIMATE CHANGE IS A CHANGE IN THE USUAL WEATHER FOUND IN A PLACE.

WHY IS CLIMATE CHANGING?

• BECAUSE OF GLOBAL WARMING.

WHY AND BY WHOM THE GLOBAL WARMING CAUSED ?

WHOM?• ITS CAUSED BY

HUMAN ACTIVITIES• MANY THINGS: • EARTH'S DISTANCE

FROM THE SUN CAN CHANGE

• OCEANS CAN CHANGE

• WHEN A VOLCANO ERUPTS

WHY?• BECAUSE OF PEOPLE

ARE ADDING HEAT- TRAPPING GASES IN TO ATMOSPHERE, MAINLY BY BURNING FOSSIL FUELS(COAL, OIL AND GAS). LIKE DRIVE CARS, PEOPLE HEAT AND COOL THEIR HOUSES. PEOPLE COOK FOOD.

• CUTTING DOWN TRESS.

• MANY MOREhttp://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-climate-change-k4.html

SOLAR RADIATION

NATURAL CAUSES VOLCANO ERUPTION

OCEAN CURRENTS

EARTHS ORBITAL CHANGE

AGRICULTURE

GREENHOUSE GASESDEFORESTATION

COAL MINING BURNING OF FOSSIL FUELS

INDUSTRIAL PROCESSES

BY HUMAN ACTIVITIES

WHAT ARE HEAT- TRAPPING GASES?HEAT-TRAPPING GASES ALSO CALLED GREENHOUSE GASES

GREEN HOUSE GASE ARE

WATER VAPORCARBON DIOXIDE

, METHANE,(comes from natural sources such as wetlands, rivers and streams, gas hydrates on the ocean

floor, and permafrost

NITROUS OXIDE( produced by cars, by fossil fuels used for heat and electricity, and by agriculture

OZONE.

WHAT EFFECTS DOES GREENHOUSE GASES CAUSE?

• WHEN THEY WERE REDUCED, THE GLOBAL CLIMATE BECAME COLDER.

• WHEN THEY WERE INCREASED, THE GLOBAL CLIMATE BECAME WARMER

https://www.skepticalscience.com/climate-change-little-ice-age-medieval-warm-period.htm

Its making places which are warm more warmer or cold and places which are cold are becoming entremely cold.Its increasing sea level. ( simplest meaning of global warming)

http://www.windows2universe.org/earth/climate/climate.html

RATIOS OF RECORD HIGHS TO RECORD LOWS FOR SUCCESSIVE DECADES IN THE UNITED STATES

http://www.c2es.org/publications/extreme-weather-and-climate-change

INCREASE IN MEAN TEMPERATURE AND VARIANCE.

https://www.climatecommunication.org/new/features/extreme-weather/overview/#!prettyPhoto/0/

CAUSES OF WARM TEMPERETURE?• Warmer temperatures causing other

changes around the world, like melting glaciers and stronger storms.

WHY DOES GLOBAL WARMING CHANGE EARTH CLIMATE?

• The cause is earth’s land, air, water and all are inter linked to the climate.

• Co2 is effecting the atmosphere and its forming a thick layer around earth

WHAT ARE THE EFFECTS OF CLIMATIC CHANGE?

• SEA LEVEL RISE.• HEAVY RAINFALL • EXTREME DROUGHT • DECLINE IN CROP

PRODUCTIVITY• ECOSYSTEMS ARE

CHANGING • HURRICANES • RISE IN TEMPERATURE • CARBON DIOXIDE

ACIDIFIES SEAWATER

. GLACIERS ARE LARGE SHEETS OF SNOW AND

. THEY'RE FOUND IN THE WESTERN UNITED STATES, ALASKA, THE MOUNTAINS OF EUROPE AND ASIA, AND MANY OTHER PARTS OF THE WORLD. . WARMER TEMPERATURES CAUSE GLACIERS TO MELT FASTER

A VIOLENT DISTURBANCE OF THE ATMOSPHERE WITH STRONG WINDS AND USUALLY RAIN, THUNDER, LIGHTNING, OR SNOW.

SYDNEY CAUSED BY THE WEEKEND'S STORMS

http://www.businessinsider.com.au/these-before-and-after-photos-show-the-devastation-in-sydney-caused-by-the-weekends-storms-2016-6

http://lethalheating.blogspot.in/2016/06/did-climate-change-play-part-in-sydney.html

ENGLAND

EXTREME RAINS HAVE FLOODED HUGE SWATHS OF FARMLAND, DESTROYED ROADS AND BUILDINGS, AND ELIMINATED TRANSPORT ACCESS TO ENTIRE TOWNS

http://theclimatemessage.com/there-may-not-always-be-an-england/

http://theclimatemessage.com/there-may-not-always-be-an-england/

Example: ROCKY NATIONAL PARK

. pine trees stretch for tens of millions of acres in the northwestern United States and western Canada.

.dead pine trees

. killed by Mountain warming temperatures in the mountain ranges.

. In the past, freezing temperatures reduced insect populations.

THE GREAT BARRIERConsidered one of the most biologically-diverse regions in the world in Australia

Warmer water temperatures had widespread coral bleaching, when coral turns white and is much more susceptible to death.

THE DANUBE RIVER

.Europe's second longest river.

Between 2011 and 2012, a persistent drought led to vanish ever thing

SAN BLAS ARCHIPELAGOSan Blas islands in Panama are home to the Guna people

The island communities are flooded for several days every rainy season as a result of rising ocean levels caused by global warming. In the foreground, a traffic sign reading "Slow Down" is partially submerged.

CARBON DIOXIDE LEVELS 2003

CARBON DIOXIDE LEVELS 2007

http://www.businessinsider.in/Shocking-Before-And-After-Pictures-Of-How-Climate-Change-Is-Destroying-The-Earth/If-this-persists-humans-may-have-to-move-to-Mars-/slideshow/30475142.cms

STRATEGIES FOR ADAPTING TO CLIMATE CHANGE

• DESIGN COOLING-LOAD-AVOIDANCE MEASURES INTO BUILDINGS. USE BUILDING GEOMETRIES TO LIMIT SOLAR GAIN ON EAST AND WEST FAÇADES, LIMIT THE AREA OF EAST- AND WEST-FACING GLAZING, INCORPORATE EXTERIOR SHADING DEVICES ABOVE GLAZING, SPECIFY GLAZINGS TUNED TO THE ORIENTATION (GLASS WITH A LOW SOLAR HEAT GAIN COEFFICIENT ON EAST AND WEST FAÇADES),INCORPORATE HIGH INSULATION LEVELS TO REDUCE CONDUCTIVE HEAT GAIN, PROVIDE HIGH-ALBEDO (REFLECTIVE) ROOFING,

• DESIGN NATURAL VENTILATION INTO BUILDINGS. IN SOME CLIMATES, PARTICULARLY THOSE WITH LOW RELATIVE HUMIDITY, BUILDINGS CAN BE DESIGNED TO RELY ENTIRELY ON NATURAL VENTILATION;

• PROVIDE LANDSCAPING TO MINIMIZE COOLING REQUIREMENTS. TREES, VINES, ANNUALS, AND GREEN ROOFS CAN ALL HELP CONTROL HEAT GAIN AND MINIMIZE COOLING DEMANDS ON A BUILDING. CAREFULLY DESIGNED LANDSCAPING CAN ALSO HELP TO CHANNEL COOLING BREEZES INTO BUILDINGS TO ENHANCE NATURAL VENTILATION.

• PLAN FOR TERMITE RANGES EXTENDING NORTH. TERMITE RANGES ARE EXTENDING NORTH, SO MEASURES TO EXCLUDE OR CONTROL THESE INSECTS SHOULD BE IMPLEMENTED IN THE. IN MANY CLIMATES, RAINWATER CAN NORTHERN U.S. AND PARTS OF CANADA.

• HARVEST RAINWATER BE COLLECTED AND STORED FOR OUTDOOR IRRIGATION, TOILET FLUSHING, AND, WITH PROPER FILTRATION AND TREATMENT, POTABLE USES. BY ADDRESSING RAINWATER HARVESTING DURING DESIGN, IT MAY BE POSSIBLE TO LOCATE CISTERNS HIGH ON THE BUILDING TO FACILITATE GRAVITY DISTRIBUTION

REFERENCE:• http://www.slideshare.net/Nabiilah/causes-and-effects-of-climate-ch

ange• http://www.slideshare.net/pacorz/climate-change-powerpoint• http://www.slideshare.net/gradyn2/climate-change-power-point• http://www.slideshare.net/walimemon/climate-chnage-a-sense-of-ur

gency-13261204• http://www.slideshare.net/planeta/climate-presentation-732903• http://architexturez.net/doc/az-cf-168632• https://www.fastcodesign.com/3042651/slicker-city/7-ways-

architecture-can-tackle-global-warming/6

• DATA COLLECTED BY• SILPA .V• K.L.PARIMALA,• P.APARNA• P.L.PRASANNA.

• PPT DONE BY • P.L.PRASANNA• , SILPA.V• • - THANK YOU-