Presentation on theme: "Weather, Climate & Water Services"— Presentation transcript:
1 Weather, Climate & Water Services Dr. D.P. DubeyScientist EMeteorological Centre, Bhopal (India)-
2 Weather, climate and water information contributes to the safety and welfare of the public & has the potential to provide immense social and economic benefits to society.It educate about important issues such as :variability in weatherclimate changevulnerability to natural hazardswater resources
3 It is not sufficient to employ good science and provide accurate forecasts.There is also a need to educate public, and more specialized users, about availability of services .
16 GLOBAL ASSESSMENTS – IPCC PROJECTIONS AVE. SURFACE TEMP. INCREASE 1.5 TO 5.8ºCRATE OF WARM LARGEMEAN SEA LEVEL RISE 0.09 TO 0.88 MTRSWATER VAP. CONCENTR. / PRECIP. TO INCREASELOW LATITUDE REGIONS MEAN PRECIP. TO INCREASEASIAN SUMMER MONSOON PRECIP. INCREASEEL-NINO EVENTS VARY IN NEXT 100 YEARS IN SMALL BUT INCREASE
17 REGIONAL EFFECTS: Asia Freshwater Availability:Decreased river flows after glaciers recede; will decrease.Floods:Glacier melt in Himalayas; sea level rise in deltasCrop yield:Increase up to 20% in E and SE; decrease up to 30% in S andcentral Asia by 2050; hunger risk high
18 Observed impacts in South Asia Intense Rains and FloodsSerious and recurrent floods in Bangladesh,Nepal and N-E India in 2002, 2003 and 2004Rainfall in Mumbai (India), 2005: 1 millionpeople lost their homes50% of droughts associated with El NiñoDroughts in Orissa (India) in : cropfailures, mass starvation affecting 11 millionpeopleDroughtsCyclones / TyphoonsIncreasing intensity of cyclones formation in Bayof Bengal and Arabian Sea since 1970Cyclone Nargis in Myanmar, 2008: 100, 000 deaths
23 Coastal ZonesSea level rise displace populations in coastal zones, increase flooding in low-lying coastal areas, loss of crop yields from inundation and salinization.7500 km coast lineVulnerable areas along the Indian Coast due to SLR
24 Variability in Weather & Climate • Heat / Cold Wave• More variable R/F• Increased Extremes Weather Events• Erratic Onset, advance andretrieval of Monsoon• Shift in Active/break cycles• Intensity and frequency of MonsoonSystems
25 AgricultureDecrease in yield of crops as temperature increases in different parts of India –2°C increase in mean air temperature, rice yields could decrease by about 0.75 ton/hectare in the high yield areas and by about 0.06 ton/hectare in the low yield coastal regions.Major impacts of climate change will be on rain fed crops (other than rice and wheat), which account for nearly 60% of cropland area. In India poorest farmers practice rain fed agriculture.The loss in farm-level net revenue will range between 9 and 25% for a temperature rise of 2-3.5°C.
27 Potential Impact of Climate Change on Wheat Production in India
28 Adaptations to Climate change Improve land management practices-soil &nutrientsIncrease water managementReduce inefficiency in water usePreserve and enhance plant and animalAdjust food consumption patternsPromote eco-friendly energy useShift to different cropping patterns
29 Climate Friendly Initiative Wide-ranging reforms such as:energy efficiencyincreasing penetration of cleaner fuelsthrust for renewable energy technologiescleaning of rivers,enhanced forestation,installed significant capacity of hydro and renewable energytechnologies andintroduced clean coal technologiescleaner and lesser carbon intensive fuel
31 Key Vulnerable River Basins Acute physical water scarce conditionsConstant water scarcities and shortageSeasonal / regular water stressed conditionsRare water shortages
32 The Indian situation this, 40 % is not available. • Surface and ground water availability - 1,869 BCM ofthis, 40 % is not available.Groundwater Consumption:92% - Agricultural5% - Industrial3% - Domestic.Surface water Consumption:89% - Agricultural2% - Industrial9% - Domestic.
33 The Indian situationGroundwater is the major source of water in the country with 85% of the population dependent.Groundwater water table decline - 33 centimeters per year.
41 Solution …The much-awaited seawater desalination plant, the largest in the country with a capacity of 100 MLD (million litres per day), coming up near Minjur about 35 km north of Chennai .Under the technology, developed by the National Institute of Ocean Technology (NIOT), warm water is pumped into a vacuum flash chamber and the resultant vapour is condensed using cold water to get crystal clear potable water.Desalinated water is of a better quality and the cost is only 6 paise per litre.
42 Solution … Water awareness groups among social media networking sites like Twitter,Facebook are creating new trend among the socialawareness groups.Its not a solution to be found, it should be a RESOLUTION everyone should take.