Global Warming Global warming is the rise in temperature of the earth's atmosphere. It is said that by the time a baby born today is 80 years old , the world will be 6 and a half degrees warmer than it is now.
y Awake today otherwise u (or your next generation) will be in this fire
10 MYTHS ABOUT GLOBAL WARMING <ul><li>* Technology will solve the problem for us </li></ul>Don't believe these commonly heard statements: * It isn't really happening * It's natural * Any effects well be very gradual * It does not affect the U.S. * It will be good for us * It's not a big deal compared to national security * Agriculture will benefit * Agriculture will benefit * It's not a big deal compared to national security * There's nothing to be done anyway
This graph shows measured record of temperature reading back through the mid 19 th century, when thermometers were first in widespread use. To estimate temperatures before that, the scientists used temperature reconstructions based on information from indirect "proxy" sources, such as ice cores, tree rings, and sediment cores. These estimates are less certain, which is indicated by the yellow shading of possible temperature ranges.Temperature changes are shown as deviations from the average temperature from 1961 to 1990. Thus it was cooler and getting colder for almost 2000 years, and then in mid 20th Century, it began to get much warmer.
According to scientists there is tight correlation between co 2 & methane in the temp. and world average temperature. More CO 2 = ↑Temp. Scientists investigating of rocks ancient rocks and ocean sediments can see the relationship going back millions of years. Other studies suggest that today's 370 parts per million of CO2 is the greatest in 20 million years -- and it is still going up.
Coral reefs are probably the most complex ecosystems on the planet, home to hundreds of thousands of species. They protect and support the lives of millions of people around the tropical zones, and are a font of wealth from fishing and recreation. The damage being caused to reefs by warming seas is one of the most serious effects of global warming.
India’s Global Warming Fears In India, weather-related natural disasters already cause annual chaos. Two months ago, whole regions of West Bengal disappeared under water - rescue workers had to use boats to give emergency help to more than 16 million affected people. Statistically, it is proven that the Himalayan glaciers are actually shrinking, and within 50 to 60 years they will virtually run out of producing the water levels that we are seeing now. This will reduce the water supply to UP , Uttranchal, Bihar .This is probably going to, over a short period of time, cause tremendous social upheaval ,”
Rising Seas Put One in 10 at Risk: Study. One in 10 people live in coastal areas at risk from rising seas caused by global warming. Researchers urge governments to encourage settlements inland rather than in coastal regions from China to Florida. Land less than 10 meters above sea level contains 2% per cent of the world's land and 10% of its population. Settlements in coastal lowlands are vulnerable to risks from climate change, yet they are densely settled and growing rapidly. It estimated that 634 million people lived in the coastal zone in 2000. More than 75% were in Asia. Globalisation is promoting a shift towards coasts fostering a world trade largely dependent on shipping. Sea levels could rise 18 to 59 cms by 2100, and keep rising for centuries. People living up to 10 metres above sea level could be vulnerable to cyclones, subsidence living, erosion of river deltas or intrusion of salty sea water onto cropland. China is most at risk with 143 million people living by the coast, followed by India, Bangladesh, Vietnam, Indonesia, Japan, Egypt and the United States. More than 90% of the Maldives, the Marshall Islands, Tuvalu, the Cayman Islands and the Turk and Caicos Islands are less than 10 metres above sea level.
Warming Winds, Rising Tides: Unstable Weather The disastrous hurricane season of 2005 was just one indication of how synergistic weather is with sea level rise, loss of wetlands, social issues, and the ability of governments to respond. Three storms strengthened to category 5 in the Atlantic Basin for the first time in a single season (Katrina, Rita, and Wilma). An unprecedented 27 named tropical storms formed, according to NOAA, and more than half of them became hurricanes. 2005 equaled 1998 as warmest year ever recorded. NOAA reported: "Mean temperatures through the end of November were warmer than average in all but three states. No state was cooler than average. A July heat wave ... broke more than 200 daily records established in six western states."
"Drier-than-average conditions contributed to an active wildfire season that burned more than 8.5 million acres in 2005.... This exceeds the old record set in 2000 for acreage burned in a wildfire season for the U.S. as a whole. At the end of November, 18 percent of the contiguous U.S. was in moderate-to-extreme drought ... in contrast to 6 percent at the end of November last year." Worldwide, "significant weather and climate events for the globe included: severe drought in parts of southern Africa and the Greater Horn of Africa, extreme monsoon-related rainfall in western India including a 24-hour rainfall total of 37.1 inches in Mumbai, the worst drought in decades in the Amazon River basin, severe drought in large parts of western Europe, and a record warm year in Australia."
The disintegrating face of the Müller Ice Shelf, Lallemand Fjord, Antarctic Peninsula, 67° South, April 2, 1999. This small shelf, fed by glaciers from the Loubet Coast, has been receding recently after growing over a 400-year cooling period.Ex, The Larsen Ice Shelf lost a 1200 square mile section early in 2002 This mile-long ice cliff of Marr Ice Piedmont, Anvers Island, has receded about 500 meters since the mid 1960s. The cliff's previous position was to the left of the line of ice floating in the harbor and extended to the headland at the extreme upper left. The regional temperature has increased 5° C in winter over the past 50 years.
Glaciers in the Northwest United States have also been shrinking. Studies by the Climate Impacts Group at University of Washington show regional temperature has been 1.5° F warmer in the 20th century, with rising snow lines, decreasing mountain snowpack, and earlier spring runoff. These photos of Mt. Hood Oregon comparing late season snow and ice only 18 years apart indicate the problem: much less late summer ice from which the region gets water for irrigation, drinking, and fish habitat.
The Pasterze, Austria's longest glacier, was about 2 kilometers longer in the 19th C. but is now completely out of sight from this overlook on the Grossglockner High Road. The Margaritzen-Strausee, a dammed artificial lake, now is in the place where the glacier terminus was in 1875. Measurements of the Pasterze began in 1889 and it has been pulling back the entire time, in approximate step with regional temperatures that have been increasing. The glacier is now about eight Km long and loses about 15 meters per year. However in 2003 the Pasterze decreased 30 meters in length and 6.5 meters in thickness. [1875 image, photographer unknown, is courtesy H. Slupetzky, from the University of Salzburg archives. Gary Braasch photo made Aug 14, 2004]
Portage Glacier 1950 (historic photo from the Lulu Fairbanks Collection, University of Alaska Library, used by permission.) A comparative photographic study of Portage Glacier in 1914 and In 2004.
Alaska's glaciers are receding at twice the rate previously thought, according to a new study published in the July 19, 2002 Science journal. These two images show Portage Glacier, near Anchorage, Alaska, in about 1950 and in July 2001. The ice has pulled back nearly out of sight.
15 Very Important Things to Do about Global Warming...from the individual to the national <ul><li>1. Learn about it -- start with this Web site and see the References. </li></ul>2. Sell the SUV and choose cleaner, more efficient vehicles. Reduce your driving: one gallon of gas burned creates 20 pounds of CO2. Fuel up on ethanol and bio-diesel. 3. Use efficient appliances, replace light bulbs with low-voltage compact fluorescents, check your home insulation. Buy renewable energy, like wind and solar, from your power company. 5. Companies -- the one you work for and the ones you buy from -- can save lots of money and reduce global warming by taking similar steps toward energy efficiency. 6. Shop smart: Look for products made from recycled materials, created with renewable energy, and which help you save money and reduce pollution. 7. Use your vote and influence as a citizen to elect responsive leaders; help them organize the neighborhood and town for energy efficiency. 8. Suburban sprawl makes for lots of global warming pollution; plan for walk able communities, lots of trees, open spaces, and public transportation in and between cities 4. Make habit of planting one tree at least in a year.
<ul><li>10. Build new homes and buildings for efficiency and solar power. </li></ul>11. Support sustainable farming and forestry, including new crops to make into ethanol and other biofuels. 12. Let the corporations who make our cars, fuels, goods and power know you want their products to be as ecological as possible. 13. At all government levels, develop an efficient energy policy, moving away from fossil fuels. 14. Export new energy technology that uses renewable energy sources to the rest of the world. 15. ....and start doing these things today.