Wednesday, January 30, 2008
Global वार्मिंग ....Frequently Asked Questions
Friday, January 25, 2008
Top 10 Things To Do To Stop Global Warming
1.Replace a regular incandescent light bulb with a compact fluorescent light bulb (cfl)CFLs use 60% less energy than a regular bulb. This simple switch will save about 300 pounds of carbon dioxide a year.
2.Install a programmable thermostatProgrammable thermostats will automatically lower the heat or air conditioning at night and raise them again in the morning. They can save you $100 a year on your energy bill.
3.Move your thermostat down 2° in winter and up 2° in summerAlmost half of the energy we use in our homes goes to heating and cooling. You could save about 2,000 pounds of carbon dioxide a year with this simple adjustment.
4.Clean or replace filters on your furnace and air conditionerCleaning a dirty air filter can save 350 pounds of carbon dioxide a year.
5.Choose energy efficient appliances when making new purchasesLook for the Energy Star label on new appliances to choose the most energy efficient products available.
6.Do not leave appliances on standbyUse the "on/off" function on the machine itself. A TV set that's switched on for 3 hours a day (the average time Europeans spend watching TV) and in standby mode during the remaining 21 hours uses about 40% of its energy in standby mode.
7.Wrap your water heater in an insulation blanketYou’ll save 1,000 pounds of carbon dioxide a year with this simple action. You can save another 550 pounds per year by setting the thermostat no higher than 50°C.
8.Move your fridge and freezerPlacing them next to the cooker or boiler consumes much more energy than if they were standing on their own. For example, if you put them in a hot cellar room where the room temperature is 30-35ºC, energy use is almost double and causes an extra 160kg of CO2 emissions for fridges per year and 320kg for freezers.
9.Defrost old fridges and freezers regularlyEven better is to replace them with newer models, which all have automatic defrost cycles and are generally up to two times more energy-efficient than their predecessors.
10.Don't let heat escape from your house over a long periodWhen airing your house, open the windows for only a few minutes. If you leave a small opening all day long, the energy needed to keep it warm inside during six cold months (10ºC or less outside temperature) would result in almost 1 ton of CO2 emissions.
Tuesday, December 4, 2007
global warming news
A U.S. Senate committee is scheduled for an historic vote on a global warming bill this week, perhaps as early as Wednesday. Environmental groups are planning a flurry of press conferences tomorrow (12/4/2007) to try to influence the vote.
A company is hoping to help tackle the issue of global warming with an environmentally-friendly film release.
Big River Man is a feature-length documentary about Martin Strel, who campaigns for the environment by swimming in polluted stretches of the Mississippi and Amazon rivers.
Film distributors have pledged to avoid chemical processing, petrol consumption and waste by-productions involved in Big River Man's distribution process.
The film will be delivered from the US on the internet, transported to cinemas using electric transport or through a new digital delivery process.
When the film is released on DVD, it will come in fully biodegradable packaging.
Big River Man is a feature-length documentary about Martin Strel, who campaigns for the environment by swimming in polluted stretches of the Mississippi and Amazon rivers.
Film distributors have pledged to avoid chemical processing, petrol consumption and waste by-productions involved in Big River Man's distribution process.
The film will be delivered from the US on the internet, transported to cinemas using electric transport or through a new digital delivery process.
When the film is released on DVD, it will come in fully biodegradable packaging.
A press release of the WWF during the two-week U.N. climate change conference in Bali, Indonesia, said Tuesday that financial resources will have to be provided by the international community to help developing countries adapt to the damaging effects of climate change.
"The devastating impacts of climate change reach across the globe, but in the near-term those most at risk, and least responsible, are developing countries," said Hans Verolme, director of the WWF's Global Climate Change Program.
"The devastating impacts of climate change reach across the globe, but in the near-term those most at risk, and least responsible, are developing countries," said Hans Verolme, director of the WWF's Global Climate Change Program.
The greenhouse effect is causing Earth's zone of tropical climate to creep towards the poles, according to a study whose release on Sunday coincided with the eve of a major UN conference on climate change.
The poleward expansion of the tropics will have far-reaching impacts, notably in intensifying water scarcity in the Mediterranean and the US "Sun belt" as well as southern Africa and southern Australia, it warns.
The poleward expansion of the tropics will have far-reaching impacts, notably in intensifying water scarcity in the Mediterranean and the US "Sun belt" as well as southern Africa and southern Australia, it warns.
Two big non-supporting facts are that even though manmade CO2 production has increased continuously for over 200 years, the overall Earth's temperature dropped from 1940 to 1975. And, more recently, not only has the Earth been warming up, but so have other planets like Mars, which doesn't receive any of our manmade CO2.
what you can do about global warming?
Take Personal Action
You can reduce your personal contribution to global warming and set an example for others by using less gasoline, natural gas, oil, and electricity in your daily life. Your choices about energy and transportation are especially crucial.
The next time you buy a car, choose one that is highly fuel efficient. Your choice of vehicle is probably your single most important environmental decision: for every single gallon of gasoline burned, 20 pounds of carbon dioxide go into the atmosphere.
Instead of driving alone in your car, join a carpool, take mass transit, walk, or ride a bike -- anything that reduces the amount of gasoline you burn.
The next time you buy an appliance, purchase a highly efficient model. You can tell by looking for the Energy Star, awarded by the Environmental Protection Agency.
Ask your local electric or gas utility to perform an energy audit of your house or apartment. Then put the recommendations into practice.
Develop a plan to reduce daily electricity use around your home. Ask each member of your household to take responsibility for a different electricity-saving action.
Is global warming caused by green house gases or by the sun?
Most scientists believe that the current global warming is caused by man-made emissions of greenhouse gases and that the most important of these gases is Carbon Dioxide or CO2.They also believe that the Sun's influence for this warming is very small. We now know that the irradiance or "heat transfer" from the Sun to the Earth has varied relative little during recent decades. Therefore the conclusion that most scientists have done is that the resent warming must be man-made, this is because they haven't found any other reasonable explanation.However what we know over how much a specific increase of CO2 has on global temperature is poor. The reason in that the knowledge of how greenhouse gases affect cloud formation is mostly down to speculations. Cloud formation physics is quite a complicated process to explain with many factors.So, rather than having a solid theoretical and measured basis for how much man-made greenhouse gases affect the climate, the made estimation is mostly down to deduction.They argue: We know how much the temperature has increased so therefore we can calculate how much a specific increase in greenhouse gases will increase the global temperature in the future. We have done this through deduction as we already have attributed the known increase to be greenhouse driven.However scientists who study the Sun have long noted similarities between solar activity and terrestrial weather patterns.Also the weather changes the last century is not something unique. Given the relative small changes in the observed irradiance "heat emitted from the Sun", those changes in temperature during past centuries are hard to explain if you don't include some other types of influence from the Sun.It was not until the Danish scientist Henrik Svensmark suggested that cosmic radiation could influence cloud cover that a plausible explains for this apparent correlation was given.Here is this theory!When the Sun is very active, as it is now, the solar wind and the solar magnetic field are both strong. This in turn shields the Earth from high energy particles coming from the cosmos, usually from particles which were once created in supernova explosions. This affects low cloud cover formation as the radiation create ions which seeds cloud forming water droplets. During times when there are many high energy particles reaching low altitudes there are more low cloud cover and the Earth cools. When there are few high energy particles penetrating to low altitudes then less clouds form and the Earth warms.Usually clouds higher up in the atmosphere are almost always ionized from both low and high energy particles because both those types of particles penetrate high altitudes at all time.The created variations are only in the low altitude cloud cover which is affected by very high energy cosmic particles.Recently an experiment called SKY (Cloud in Danish) was made by Svensmark which conclusively confirmed this cloud forming mechanism experimentally and that this type of cosmic ionization has an important seed effect on clouds. Links between low cloud cover variations and high energy particles intensity have also now been confirmed by satellite studies.
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