Tuesday, August 9, 2011

Climate change impacts on Srilanka(Asia)

COLOMBO, Apr 24, 2007 (IPS) - As the world prepares for yet another ‘scary' report by the United Nations panel on global warming and climate change, a Sri Lankan specialist in the group says Tamil rebels and government troops are actually fighting over land due to be submerged as sea-levels rise. 

''A major part of Jaffna and other northern areas (of Sri Lanka) will be submerged when the sea-level rises. So people are fighting and dying over areas that may soon not be there,'' Prof. Mohan Munasinghe, vice-chairman of the U.N.'s Intergovernmental Panel on Climate Change (IPCC), told IPS in an interview. 

Jaffna, seat of a revolt for an independent homeland for minority Tamils, lies on the northern tip of the island. Northern and eastern coastal areas, both claimed by the rebels as traditional Tamil homelands, are vulnerable to submersion as they are flatter than other coastal areas. 

The vulnerability of the north and east was highlighted during the Dec. 26, 2004 Asian tsunami when these areas bore the brunt of the damage caused by the killer waves that hit the island, following an undersea earthquake off the coast of Indonesia's Sumatra island. 

Munasinghe, known internationally for his work on energy and sustainable development, says climate change in Sri Lanka will have dire consequences on water, agriculture, health and the coast. "Already there are early signs of the impact which would assume serious proportions by 2025," he said. "But unfortunately if the developed world doesn't do anything to mitigate the impact, there's little Sri Lanka can do." 

IPCC is releasing the third volume of its 4th assessment report in Bangkok on May 4. Since the first one came out in 2001, IPCC reports have been closely scrutinised by policymakers across the world, but action has been painfully slow in tackling the problem of greenhouse gases (GHGs) and carbon dioxide emissions that are said to cause global warming. 

The biggest culprits are the United States and Europe through their fossil fuel industry and its powerful lobbies. 

Providing a peek review of the forthcoming report Munasinghe, a former World Bank who has advised several Sri Lankan governments on energy issues, said among the key messages would be the need to take immediate action to mitigate or reduce GHGs. 

The report will also focus on the methods and technologies to make this early start and provide clear signals to industry to develop the technologies to make such a change. "Industrialised countries should lead the way as they are the biggest polluters," he said, adding that the Europeans clearly recognised these concerns earlier this year. "Thus there is now some action in the developed countries," he said. 

The IPCC vice-chairman is frustrated at the general apathy of countries in dealing with global warming despite the fact that some of the best experts in the world prepare the reports on global warming. The latest one has contributions from 3,000 scientists. 

"No one takes it seriously because it is something that does not happen today or tomorrow. The biggest culprits are the rich countries...so it's difficult to take action," he said, adding that one of the weaknesses in the campaign is the inability of scientists to translate their jargon into language that is understood by everyone, including politicians. 

The world response to global warming has been very slow. When IPCC's first report, released in 1990, provided scientific evidence to show the existence of GHGs that can alter the climate, the public was sceptical. The second report dealt with the impact of GHGs, the impact on humans and need for mitigation. 

The third report in 2001 focussed on vulnerability and adapting to situations. It said even if there were zero emissions, what is already in the atmosphere would cause global warming and impact mostly on tropical countries, and thereby the poor. Experts say even in rich countries it is the poor that are affected by global warming - as the impact of Hurricane Katrina in the U.S. has shown. 

More than 80 percent of the emissions that cause climate change come from rich countries with lifestyles and development that cause the problems. The per capita emissions of countries like India or China, despite being large, are a mere 1/30th or 1/40th of what is emitted by the U.S. or Europe. 

Munasinghe says his argument, made during a presentation at the Earth Summit in Rio in 1992, that there is a strong need for integrating climate change and longer term issues into sustainable development strategies has become a reality today. "Sustainable development is the way out... starting with the industrial nations," he said. 

In the Sri Lankan scenario, population shifts where the country would have a bigger aging population in 20 years will exacerbate the problem since health is one area where the impact would be high. 

"Remember malnutrition and disease affects mostly children and older people. An aging population means there would be fewer people to carry the burden as well and all these would be vulnerable. Productivity will get affected because there are fewer young people," he said. 

Sri Lanka expects that over the next two decades the sea-level will rise by half a metre with dry areas becoming drier and wet areas becoming wetter, leading to floods in some areas and drought in others. 

Earlier this month, Rajendra Pachauri, chairman of IPCC, said at a press conference in New Delhi that up to 60 million coastal people in the low-lying areas of South Asia could be displaced by global warming by the end of the 21st century. 

Especially vulnerable, said Pachauri, are the coastal metropolises of Mumbai and Kolkata which are already showing signs of strain on their drainage systems and infrastructure. 

India could be most seriously affected by scantier rainfall and by glacier melt in the Himalayas which supply the river systems on which agriculture depends, Pachauri said, adding that glacier melt could also seriously affect China. 

According to Pachauri the impact of global warming on India, where almost 700 million people are dependent on agriculture, would be really serious and trigger mass migration of rural communities to urban areas in search of alternate livelihoods. 

The most frightening prospect for Sri Lanka is also in agriculture. ‘'We have done some studies with the meteorological department which show higher temperatures and less water,'' said Munasinghe. ''This will result in paddy farming output falling by 20-30 percent in the next 20 to 30 years. The output will begin to drop gradually over the next few years.'' 

The other issue is that of equity, says Munasinghe, in the wet zone where the hill country is filled with tea bushes - the tea crop will increase making those workers well off. While paddy is cultivated mostly by farmer-families in which the cost of production is much higher than the selling price, tea workers are assured of their monthly wages even if tea companies find production costs higher than selling prices. Tea is generally a profitable crop. 

He says in the hotter areas mosquitoes will be more rampant and even move into the more hilly areas. Thus the incidence of vector-borne diseases like malaria and dengue in endemic areas could increase in addition to diseases triggered by poor quality water that accompanies droughts



(Source:http://ipsnews.net/news.asp?idnews=37463)

Climate change impacts on Bangladesh(Asia)


1. Disappearing seasons of Bangladesh
There are six seasons in Bangladesh which are disappearing due to climate change. Summer & rainy seasons are prolonging, whereas winter season is shrinking. Autumn and Dewy seasons are vanishing. Spring season has already been vanished.
2. Infrastructures
In Bangladesh, 93 disasters have occurred over the period from 1991 to 2000 and incurred the loss of US$ 590 crore in agriculture and infrastructure sectors.
3. Saline water intrusion
About 830,000 ha cultivable land has damaged by saline water intrusion from Bay of Bengal.
4. River bank erosions
Near about 106,300 ha river bank has eroded over the period from 1982 to 1992 due to climate change induced hazards especially floods.
5. Drought/too little water during the dry season
About 21.8 tones of rice damaged due to drought over the period from 1973 to 1987.
6. Floods/too much water during monsoon
Rice, about 23.8 lack tones has damaged due to flood over the period from 1973 to 1987.
Future Projection of Climate Change Impacts in Bangladesh
1. Crop production & food security
Rainfall patterns are changed due to climate change – crops yields are expected to drop significantly. Crop production will decrease 30% in 2100. Production of rice & wheat will reduce 8.8%, and 32% within 2050 respectively.
2. Salinity
There are 13% areas are salinity at Bagerhat, Khulna & Sathkhira, the southwestern coastal districts of Bangladesh at present which will increase 16% in 2050 and 18% in 2100.
3. Coral bleaching
Corals are vulnerable to thermal stress. If the sea surface temperature increases 1-3° C then corals bleaching will occur frequently.
4. Mangrove forest
About 75% area of mangrove forest, Sundarban (60007 Sq. km) will submerse if the sea level will increase 45 cm. If the sea level rise 1 m then the islands of Bay of Bengal and whole Sundarban will destroy including its fauna & flora.
5. Fisheries:
• Death rate of shrimp’s fingerlings will increase if the water temperature is more than 32°C (CEGIS).
• Diseases of fish may increase.
• Carps culture may reduce due to saline water intrusion in the ponds and open water bodies.
• Production of sweet water fish will shrink and extinct if the sea level rise.
6. Health:
• More floods are contaminating water. Increasing water borne diseases such as cholera, diarrhoea etc.
• More droughts are decreasing food production. Increasing malnutrition.
• More greenhouse gases are increasing air pollution. Rising respiratory diseases.
• Rise of temperature will favor for pest and pathogen that will increase dengue, malaria, diarrhea etc.
• Injuries, disabilities, psychosocial stress and death are becoming severe for more floods, fires, droughts, heat waves & cyclones.
• High salinity in water will affect human health.
7. Climate refugee or migration
In Bangladesh every year, rivers engulf enormous agriculture fields and homesteads, makes the peoples homeless. Those who have no way to live in the locality, migrate to urban areas and live in slum with unhygienic conditions.
8. Sea level rise
If the sea level rise -
• Low-lying non-embankment coastal area may be completely inundated.
• It will increase the risk of coastal salinity.
• Scarcity of saline free drinking water will increase highly.
• Current agricultural practices will change.
9. Increased evaporation:
Global average water vapor concentration and precipitation are projected to increase during the 21st century.
10. Biodiversity
If the global temperature rises by 2° Centigrade, 30% of all land species will be threatened by an increased risk of extinction.
(source:http://www.climatefrontlines.org/?q=en-GB/node/426)

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