This project has been made by me, and this is giving detailed information about the impacts of global warming, its diadvantages, etc.

1. IMPACTS OF
GLOBAL
WARMING

2. CONTENT
 Introduction of Global Warming
 Causesof Global Warming
 Impactsof Global Warming
 Droughts
 Floods
 LevelRisingTemperaturesof Oceans/sea
 Tornadoes
 Hurricanes
 TheMelting of Mountain Glaciers
 TheReductionof SnowCover
 Coastal Erosion

3. INTRODUCTION
Global warming is the term used to describe a gradual
increase in the average temperature of the Earth's
atmosphere and its oceans, due to which permanently
changeoccursinthe Earth's climate.

4. CAUSESOFGLOBALWARMING
 Most of the climate scientists are agree that the main
cause of the current global warming is due to the
"green house effect“
 Theremaybe other causes like
 Respiration
 Mining activities
 Rapid industrialization
 Increasedin auto mobile use

5. GREENHOUSEEFFECT
 presentin theatmosphere absorbs infrared radiations reflectedfrom thesurface
of theearth and heats up the atmosphere.

6. SOURCESOFGREENHOUSEGASES

7. Sunlight’s energy remains trapped in the atmosphere

8. FLOODS& DROUGHTS
CAUSEDBYGLOBAL
WARMING

9. DROUGHTSCAUSEDBYGLOBAL
WARMING
 Adrought isanextended period of dry weather
causedby a lack of rain
 Increasedtemperatures causemore evaporation
 someplaceswill receive greater concentrationsof
rain and other placeswill receive less (droughts)

10. EFFECTSOFDROUGHTSTO
IRRIGATION
 Amountof water in lakes,rivers, and streams
 Crop Losses
 Drying of Irrigation Canals
 Affect the coastal Areas
 CauseHeatWaves
 Affect LiveStock

11. HOW FLOODISCAUSEDBY
GLOBAL WARMING
 Aflood isanoverflow of water that submerges
land whichisusually dry
 Therate of evaporation from the oceanseemsto be
increasing

12. THE 2010 FLOOD(OFINDIA)
https://www.shutterstock.com/

13. DAMAGESOF2010FLOOD(OF
INDIA)
 Affects the 79 Districtsof Country
 20 Million people affected
 1600 Casualties
 1.89 Million homes Destroyed
 HugeDamagesof Water Courses,Tubewells
 Damagethe cropsof Approximately
1.32 Million Hectares

14. CROPSDAMAGESOF2010FLOOD

15. MAPOFFLOODAFFECTEDAREAS

16. LEVELRISINGTEMPERATURESOF
OCEANS /SEA
CAUSEDBYGLOBAL WARMING

17. RISINGTEMPERATUREOFOCEANS
AND SEA
Rising temperature of ocean and sea may be more significant
thanthe direct effect of higher temperature.
Because….
• Theworld's agricultural output isheavily dependent on
irrigation.
• Out of a global cropped area of 1500 million ha, 16% is
irrigated.
• Global warming islikely to have a major impact onthe
hydrological cycleand consequently onirrigated agriculture.

18. RISINGTEMPERATUREOFOCEANS
AND SEA
Aswe have discussedthat atmospherictemp raisesdue to
green houseeffects soit raisesthe temp of sea/ocean onthe
following two mechanism
Two major mechanisms are causing sea level to rise.
First,shrinking land ice,suchasmountainglaciers and polar
ice sheets,isreleasing water into the oceans.
Second,asoceantemperatures rise,the warmer water
expands.Trapped within a basin bounded by the continents,
the water hasnowhere to go but up.:

19. RISINGTEMPERATUREOFOCEANS
AND SEA
Theconsequencesof sealevel risesdue to tempinclude
 Threatsto coastalcommunities
 40% of the world’s population lives within 62 miles
of theocean.

20. TORNADOESANDHURRICANES
CAUSEDBYGLOBAL
WARMING

21.  Tornadoes:
• Atornado israpidly spinningair that develops from a
thunderstormsand isontheground.
• Theingredientsfor a tornado are a thunderstorm,winds
changing speedswith height and rapidly rising air.
 Hurricanes:
• A hurricane is a huge organized
thunderstorm complex that develops over the ocean
• The ingredients are warm ocean water, weak upper
level winds,and low pressure
TORNADOESANDHURRICANES

22.  Comparison betweenTornadoesand Hurricanes:
TORNADOESANDHURRICANES

23. IMPACTSOFTORNADOES&HURRICANES
 Irrigation Systems:
• Damaging windscausedextensive
damage to numerouspivot style irrigation
systemsthat farmers useto water crops
 Flooding:
• Heavy rains and oceanwaters brought
ashoreby strong windscancause
flooding in excessof 50 cm(20 in)
over a 24 hour period.

24. MELTINGOFGLACIERS
CAUSEDBYGLOBAL
WARMING

25. MELTINGOFGLACIERS

26. MELTINGOFGLACIERS
 Over a Thousandyears ago,Asiansusedto irrigate
their lands by the melted water from glaciers.
 During Warm season,snowmeltsslowly,releasing a
steady flow of water.
 Over the last few decades,Glaciers are melting at
a torrid pace asanadverse effect of Global
warming & climate change.

27. MELTINGOFGLACIERS
 Effects of Glacier Melting:
Reducedwater for agriculturaluse
Shrinkageof river based irrigated land
Contamination of coastal groundwater supply
More floods & droughts
Mudslides,dam break etc.

28. MELTINGOFGLACIERS
 Acc.to IPCCreports, Himalayan glaciers could melt
entirely by 2035.
 Thismelting of glaciers couldsoondeprive the
major rivers of India, China& Pakistan.
 Inthe Indus,Ganga, Yellow,and YangtzeRiver
basins,where irrigated agriculture dependsheavily
onrivers,the glacier meltwill shrinkharvestsand
could create unmanageable food shortages.

29. MELTINGOFGLACIERS
 TheYangtzeRiverin China,isthreatened by the
disappearance of glaciers whichwill effect 369m
people whorely heavily onrice from fields irrigated
with its water.
 Inthe Ganga river alone, the lossof glacier melt water
would reduce river flows by two third, causingwater
shortage for 500m people and 37 per centof India’s
irrigated land.
 Similarly, 60% of Pakistan’speople, depend ongrain
irrigated by the Indusriver, whichisalso dependent on
meltwater from Himalayan glaciers, are underthreat of
food & water scarcity.