430 likes | 602 Views
Dr. D.P. Dubey Scientist E Meteorological Centre, Bhopal (India) email- dir_dubey@rediffmail.com. Weather, Climate & Water Services.
E N D
Dr. D.P. Dubey Scientist E Meteorological Centre, Bhopal (India) email- dir_dubey@rediffmail.com Weather, Climate & Water Services
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 weather • climate change • vulnerability to natural hazards • water resources
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.
Main crop • Kharif - June to Sept. • Rabi - Oct to April.
Operational communication to end-users (farmers) State Met Centres Agromet Advisory Bulletin by AMFUs State Agril. Dept. SMS on mobile Personal Contact Postal Contact Farmer KVK Television News Papers Radio
Weather forecast • Short range • Medium range • Long range
ASSESSMENTS Source : IPCC
GLOBAL ASSESSMENTS – IPCC PROJECTIONS • AVE. SURFACE TEMP. INCREASE 1.5 TO 5.8ºC • RATE OF WARMLARGE • MEAN SEA LEVEL RISE 0.09 TO 0.88 MTRS • WATER VAP. CONCENTR. / PRECIP.TO INCREASE • LOW LATITUDE REGIONS MEAN PRECIP.TOINCREASE • ASIAN SUMMER MONSOON PRECIP.INCREASE • EL-NINO EVENTS VARY IN NEXT 100 YEARS IN SMALL BUT INCREASE
REGIONAL EFFECTS: Asia Freshwater Availability: Decreased river flows after glaciers recede; will decrease. Floods: Glacier melt in Himalayas; sea level rise in deltas Crop yield: Increase up to 20% in E and SE; decrease up to 30% in S and central Asia by 2050; hunger risk high
Observed impacts in South Asia Intense Rains and Floods • Serious and recurrent floods in Bangladesh, • Nepal and N-E India in 2002, 2003 and 2004 • Rainfall in Mumbai (India), 2005: 1 million • people lost their homes • 50% of droughts associated with El Niño • Droughts in Orissa (India) in 2000-2002: crop • failures, mass starvation affecting 11 million • people Droughts Cyclones / Typhoons • Increasing intensity of cyclones formation in Bay • of Bengal and Arabian Sea since 1970 • Cyclone Nargis in Myanmar, 2008: 100, 000 deaths
EVIDENCES / EVENTS DROUGHT HITS KARNATAKA 2008 HEAT WAVE IN NORTHERN INDIA 2007 COLD WAVE IN NORTH 2006 NILAM CYCLONE (2012)
INDIA Vulnerability to Climate Change
Coastal Zones • Sea 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 line Vulnerable areas along the Indian Coast due to SLR
Variability in Weather & Climate • Heat / Cold Wave • More variable R/F • Increased Extremes Weather Events • Erratic Onset, advance and retrieval of Monsoon • Shift in Active/break cycles • Intensity and frequency of Monsoon Systems
Agriculture • Decrease 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.
Factors influencing agriculture and food security • Increasing population • Growing urbanization • Decreasing crop land • Continuing crop loss • Declining crop production • Declining bio-diversity
Potential Impact of Climate Change on Wheat Production in India
Adaptations to Climate change • Improve land management practices-soil &nutrients • Increase water management • Reduce inefficiency in water use • Preserve and enhance plant and animal • Adjust food consumption patterns • Promote eco-friendly energy use • Shift to different cropping patterns
Climate Friendly Initiative • Wide-ranging reforms such as: • energy efficiency • increasing penetration of cleaner fuels • thrust for renewable energy technologies • cleaning of rivers, • enhanced forestation, • installed significant capacity of hydro and renewable energy • technologies and • introduced clean coal technologies • cleaner and lesser carbon intensive fuel
Key Vulnerable River Basins • Acute physical water scarce conditions • Constant water scarcities and shortage • Seasonal / regular water stressed conditions • Rare water shortages
TheIndiansituation • Surface and ground water availability - 1,869 BCM of this, 40 % is not available. Groundwater Consumption: • 92% - Agricultural • 5% - Industrial • 3% - Domestic. Surface water Consumption: • 89% - Agricultural • 2% - Industrial • 9% - Domestic.
TheIndiansituation • Groundwater is the major source of water in the country with 85% of the population dependent. • Groundwater water table decline - 33 centimeters per year.
TheIndiansituation • Population [ ] • Demand [ ] • Consumption [] • Groundwater [Depleted] • Surface water [Polluted] • Rainfall [Wasted] SCARCITY • Industrial Growth [ ] • Economy-Industry [ ] • Water Business[] • Agriculture [ ] • Health & Environment[ ] • Future [ ? ]
Challenges …. Public • Wasting Water • Polluting Water
Challenges …. Safety of industrial establishments from surplus surface water and floods Lack of proper draining facilities Uncontrolled exploitation of ground water by some industrial establishments
Challenges … • 2020 India will become a water stressed nation. • 66 million Indians in 20 states areat risk due to • excess fluoride • 10 million due to excess arsenic in groundwater
Solution … • Rain Water Harvesting • Irrigation Water Management • Hydrological projects - Construction of Dams • Artificial Recharge to Ground Water.
Solution … National River Linking Project
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.
Solution … • Water awareness groups among social media • networking sites like Twitter, • Facebook are creating new trend among the social • awareness groups. • Its not a solution to be found, it should be a RESOLUTION everyone should take.