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are we really responsible for global warming.??
Feb 8, 2007 @ 13:17
answers on (recycled) postcard please.??
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answers on (recycled) postcard please.??
ajukFeb 8, 2007 @ 13:17
ajukFeb 8, 2007 @ 13:17
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Re: are we really responsible for global warming.??
Post 1
Feb 8, 2007 @ 13:35
Carbon dioxide and other gases warm the surface of the planet naturally by trapping solar heat in the atmosphere. This is a good thing because it keeps our planet habitable. However, by burning fossil fuels such as coal, gas and oil and clearing forests we have dramatically increased the amount of carbon dioxide in the Earth’s atmosphere and temperatures are rising.
The vast majority of scientists agree that global warming is real, it’s already happening and that it is the result of our activities and not a natural occurrence.1 The evidence is overwhelming and undeniable.
We’re already seeing changes. Glaciers are melting, plants and animals are being forced from their habitat, and the number of severe storms and droughts is increasing.
The number of Category 4 and 5 hurricanes has almost doubled in the last 30 years.2
Malaria has spread to higher altitudes in places like the Colombian Andes, 7,000 feet above sea level.3
The flow of ice from glaciers in Greenland has more than doubled over the past decade.4
At least 279 species of plants and animals are already responding to global warming, moving closer to the poles.5
If the warming continues, we can expect catastrophic consequences.
Deaths from global warming will double in just 25 years -- to 300,000 people a year.6
Global sea levels could rise by more than 20 feet with the loss of shelf ice in Greenland and Antarctica, devastating coastal areas worldwide.7
Heat waves will be more frequent and more intense.
Droughts and wildfires will occur more often.
The Arctic Ocean could be ice free in summer by 2050.8
More than a million species worldwide could be driven to extinction by 2050.9
The vast majority of scientists agree that global warming is real, it’s already happening and that it is the result of our activities and not a natural occurrence.1 The evidence is overwhelming and undeniable.
We’re already seeing changes. Glaciers are melting, plants and animals are being forced from their habitat, and the number of severe storms and droughts is increasing.
The number of Category 4 and 5 hurricanes has almost doubled in the last 30 years.2
Malaria has spread to higher altitudes in places like the Colombian Andes, 7,000 feet above sea level.3
The flow of ice from glaciers in Greenland has more than doubled over the past decade.4
At least 279 species of plants and animals are already responding to global warming, moving closer to the poles.5
If the warming continues, we can expect catastrophic consequences.
Deaths from global warming will double in just 25 years -- to 300,000 people a year.6
Global sea levels could rise by more than 20 feet with the loss of shelf ice in Greenland and Antarctica, devastating coastal areas worldwide.7
Heat waves will be more frequent and more intense.
Droughts and wildfires will occur more often.
The Arctic Ocean could be ice free in summer by 2050.8
More than a million species worldwide could be driven to extinction by 2050.9
The text you are quoting:
Carbon dioxide and other gases warm the surface of the planet naturally by trapping solar heat in the atmosphere. This is a good thing because it keeps our planet habitable. However, by burning fossil fuels such as coal, gas and oil and clearing forests we have dramatically increased the amount of carbon dioxide in the Earth’s atmosphere and temperatures are rising.
The vast majority of scientists agree that global warming is real, it’s already happening and that it is the result of our activities and not a natural occurrence.1 The evidence is overwhelming and undeniable.
We’re already seeing changes. Glaciers are melting, plants and animals are being forced from their habitat, and the number of severe storms and droughts is increasing.
The number of Category 4 and 5 hurricanes has almost doubled in the last 30 years.2
Malaria has spread to higher altitudes in places like the Colombian Andes, 7,000 feet above sea level.3
The flow of ice from glaciers in Greenland has more than doubled over the past decade.4
At least 279 species of plants and animals are already responding to global warming, moving closer to the poles.5
If the warming continues, we can expect catastrophic consequences.
Deaths from global warming will double in just 25 years -- to 300,000 people a year.6
Global sea levels could rise by more than 20 feet with the loss of shelf ice in Greenland and Antarctica, devastating coastal areas worldwide.7
Heat waves will be more frequent and more intense.
Droughts and wildfires will occur more often.
The Arctic Ocean could be ice free in summer by 2050.8
More than a million species worldwide could be driven to extinction by 2050.9
ajuk, Feb 8, 2007 @ 13:35
The vast majority of scientists agree that global warming is real, it’s already happening and that it is the result of our activities and not a natural occurrence.1 The evidence is overwhelming and undeniable.
We’re already seeing changes. Glaciers are melting, plants and animals are being forced from their habitat, and the number of severe storms and droughts is increasing.
The number of Category 4 and 5 hurricanes has almost doubled in the last 30 years.2
Malaria has spread to higher altitudes in places like the Colombian Andes, 7,000 feet above sea level.3
The flow of ice from glaciers in Greenland has more than doubled over the past decade.4
At least 279 species of plants and animals are already responding to global warming, moving closer to the poles.5
If the warming continues, we can expect catastrophic consequences.
Deaths from global warming will double in just 25 years -- to 300,000 people a year.6
Global sea levels could rise by more than 20 feet with the loss of shelf ice in Greenland and Antarctica, devastating coastal areas worldwide.7
Heat waves will be more frequent and more intense.
Droughts and wildfires will occur more often.
The Arctic Ocean could be ice free in summer by 2050.8
More than a million species worldwide could be driven to extinction by 2050.9
ajuk, Feb 8, 2007 @ 13:35
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Re: are we really responsible for global warming.??
Post 2
Feb 8, 2007 @ 13:42
Since our entire climate system is fundamentally driven by energy from the sun, it stands to reason that if the sun's energy output were to change, then so would the climate. Since the advent of space-borne measurements in the late 1970s, solar output has indeed been shown to vary. There appears to be confirmation of earlier suggestions of an 11 (and 22) year cycle of irradiance. With only 20 years of reliable measurements however, it is difficult to deduce a trend. But, from the short record we have so far, the trend in solar irradiance is estimated at ~0.09 W/m2 compared to 0.4 W/m2 from well-mixed greenhouse gases. There are many indications that the sun also has a longer-term variation which has potentially contributed to the century-scale forcing to a greater degree. There is though, a great deal of uncertainty in estimates of solar irradiance beyond what can be measured by satellites, and still the contribution of direct solar irradiance forcing is small compared to the greenhouse gas component. However, our understanding of the indirect effects of changes in solar output and feedbacks in the climate system is minimal. There is much need to refine our understanding of key natural forcing mechanisms of the climate, including solar irradiance changes, in order to reduce uncertainty in our projections of future climate change.
In addition to changes in energy from the sun itself, the Earth's position and orientation relative to the sun (our orbit) also varies slightly, thereby bringing us closer and further away from the sun in predictable cycles (called Milankovitch cycles). Variations in these cycles are believed to be the cause of Earth's ice-ages (glacials). Particularly important for the development of glacials is the radiation receipt at high northern latitudes. Diminishing radiation at these latitudes during the summer months would have enabled winter snow and ice cover to persist throughout the year, eventually leading to a permanent snow- or icepack. While Milankovitch cycles have tremendous value as a theory to explain ice-ages and long-term changes in the climate, they are unlikely to have very much impact on the decade-century timescale. Over several centuries, it may be possible to observe the effect of these orbital parameters,
In addition to changes in energy from the sun itself, the Earth's position and orientation relative to the sun (our orbit) also varies slightly, thereby bringing us closer and further away from the sun in predictable cycles (called Milankovitch cycles). Variations in these cycles are believed to be the cause of Earth's ice-ages (glacials). Particularly important for the development of glacials is the radiation receipt at high northern latitudes. Diminishing radiation at these latitudes during the summer months would have enabled winter snow and ice cover to persist throughout the year, eventually leading to a permanent snow- or icepack. While Milankovitch cycles have tremendous value as a theory to explain ice-ages and long-term changes in the climate, they are unlikely to have very much impact on the decade-century timescale. Over several centuries, it may be possible to observe the effect of these orbital parameters,
The text you are quoting:
Since our entire climate system is fundamentally driven by energy from the sun, it stands to reason that if the sun's energy output were to change, then so would the climate. Since the advent of space-borne measurements in the late 1970s, solar output has indeed been shown to vary. There appears to be confirmation of earlier suggestions of an 11 (and 22) year cycle of irradiance. With only 20 years of reliable measurements however, it is difficult to deduce a trend. But, from the short record we have so far, the trend in solar irradiance is estimated at ~0.09 W/m2 compared to 0.4 W/m2 from well-mixed greenhouse gases. There are many indications that the sun also has a longer-term variation which has potentially contributed to the century-scale forcing to a greater degree. There is though, a great deal of uncertainty in estimates of solar irradiance beyond what can be measured by satellites, and still the contribution of direct solar irradiance forcing is small compared to the greenhouse gas component. However, our understanding of the indirect effects of changes in solar output and feedbacks in the climate system is minimal. There is much need to refine our understanding of key natural forcing mechanisms of the climate, including solar irradiance changes, in order to reduce uncertainty in our projections of future climate change.
In addition to changes in energy from the sun itself, the Earth's position and orientation relative to the sun (our orbit) also varies slightly, thereby bringing us closer and further away from the sun in predictable cycles (called Milankovitch cycles). Variations in these cycles are believed to be the cause of Earth's ice-ages (glacials). Particularly important for the development of glacials is the radiation receipt at high northern latitudes. Diminishing radiation at these latitudes during the summer months would have enabled winter snow and ice cover to persist throughout the year, eventually leading to a permanent snow- or icepack. While Milankovitch cycles have tremendous value as a theory to explain ice-ages and long-term changes in the climate, they are unlikely to have very much impact on the decade-century timescale. Over several centuries, it may be possible to observe the effect of these orbital parameters,
ajuk, Feb 8, 2007 @ 13:42
In addition to changes in energy from the sun itself, the Earth's position and orientation relative to the sun (our orbit) also varies slightly, thereby bringing us closer and further away from the sun in predictable cycles (called Milankovitch cycles). Variations in these cycles are believed to be the cause of Earth's ice-ages (glacials). Particularly important for the development of glacials is the radiation receipt at high northern latitudes. Diminishing radiation at these latitudes during the summer months would have enabled winter snow and ice cover to persist throughout the year, eventually leading to a permanent snow- or icepack. While Milankovitch cycles have tremendous value as a theory to explain ice-ages and long-term changes in the climate, they are unlikely to have very much impact on the decade-century timescale. Over several centuries, it may be possible to observe the effect of these orbital parameters,
ajuk, Feb 8, 2007 @ 13:42
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Re: are we really responsible for global warming.??
Post 3
Feb 8, 2007 @ 16:14
It is not whether we are 'responsible' for global warming, it is whether or not we are 'contributing' to it...and the answer is 'yes'.
The drive to reduce carbon dioxide emissions, we can only hope, will produce the same net effect as one who stops smoking. Death is still inevitable but longevity is secured.
The drive to reduce carbon dioxide emissions, we can only hope, will produce the same net effect as one who stops smoking. Death is still inevitable but longevity is secured.
The text you are quoting:
It is not whether we are 'responsible' for global warming, it is whether or not we are 'contributing' to it...and the answer is 'yes'.
The drive to reduce carbon dioxide emissions, we can only hope, will produce the same net effect as one who stops smoking. Death is still inevitable but longevity is secured.
Riley, Feb 8, 2007 @ 16:14
The drive to reduce carbon dioxide emissions, we can only hope, will produce the same net effect as one who stops smoking. Death is still inevitable but longevity is secured.
Riley, Feb 8, 2007 @ 16:14
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Re: are we really responsible for global warming.??
Post 4
Feb 8, 2007 @ 16:49
i fully agree and i thank you for your comments, but are we and our polluting ways actually the cause of it.?? i agree we are the cause if the acceleration in global warming
but looking at the notes in the flipside comment ,and the effects of the sun ,its a scientifically agreed ( not proven) that this could lead to the melting of the permafrost releasing methane gasses at a rate faster than we are with CFC's / fossil fuels etc ..??? (amongst other natural occurences) granted with deforestation etc we are the accelerant, but the actual cause would appear to be beyond us at the moment .? do you see what im getting at.? i really dont know enough about this topic but do find it an interesting subject , further enlightenment much appreciated.!
but looking at the notes in the flipside comment ,and the effects of the sun ,its a scientifically agreed ( not proven) that this could lead to the melting of the permafrost releasing methane gasses at a rate faster than we are with CFC's / fossil fuels etc ..??? (amongst other natural occurences) granted with deforestation etc we are the accelerant, but the actual cause would appear to be beyond us at the moment .? do you see what im getting at.? i really dont know enough about this topic but do find it an interesting subject , further enlightenment much appreciated.!
The text you are quoting:
i fully agree and i thank you for your comments, but are we and our polluting ways actually the cause of it.?? i agree we are the cause if the acceleration in global warming
but looking at the notes in the flipside comment ,and the effects of the sun ,its a scientifically agreed ( not proven) that this could lead to the melting of the permafrost releasing methane gasses at a rate faster than we are with CFC's / fossil fuels etc ..??? (amongst other natural occurences) granted with deforestation etc we are the accelerant, but the actual cause would appear to be beyond us at the moment .? do you see what im getting at.? i really dont know enough about this topic but do find it an interesting subject , further enlightenment much appreciated.!
ajuk, Feb 8, 2007 @ 16:49
but looking at the notes in the flipside comment ,and the effects of the sun ,its a scientifically agreed ( not proven) that this could lead to the melting of the permafrost releasing methane gasses at a rate faster than we are with CFC's / fossil fuels etc ..??? (amongst other natural occurences) granted with deforestation etc we are the accelerant, but the actual cause would appear to be beyond us at the moment .? do you see what im getting at.? i really dont know enough about this topic but do find it an interesting subject , further enlightenment much appreciated.!
ajuk, Feb 8, 2007 @ 16:49
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Re: are we really responsible for global warming.??
Post 5
Feb 8, 2007 @ 16:53
and confusing myself in the process..........
The text you are quoting:
and confusing myself in the process..........
ajuk, Feb 8, 2007 @ 16:53
ajuk, Feb 8, 2007 @ 16:53
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Re: are we really responsible for global warming.??
Post 6
Feb 8, 2007 @ 17:38
...according to the new IPCC (www.ipcc.ch/) report that is scheduled to be out soon. Thousands of scientists with 6+ years of research can't be (too) wrong.
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...according to the new IPCC (www.ipcc.ch/) report that is scheduled to be out soon. Thousands of scientists with 6+ years of research can't be (too) wrong.
Rasta, Feb 8, 2007 @ 17:38
Rasta, Feb 8, 2007 @ 17:38
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Re: are we really responsible for global warming.??
Post 7
Feb 12, 2007 @ 15:39
Here is a quote from www.climatecrisis.org, the website that is linked to the move “An Inconvienient Truth”, which EVERONE should see!
“Carbon dioxide and other gases warm the surface of the planet naturally by trapping solar heat in the atmosphere. This is a good thing because it keeps our planet habitable. However, by burning fossil fuels such as coal, gas and oil and clearing forests we have dramatically increased the amount of carbon dioxide in the Earth’s atmosphere and temperatures are rising.
The vast majority of scientists agree that global warming is real, it’s already happening and that it is the result of our activities and not a natural occurrence.1 The evidence is overwhelming and undeniable.
We’re already seeing changes. Glaciers are melting, plants and animals are being forced from their habitat, and the number of severe storms and droughts is increasing.
~The number of Category 4 and 5 hurricanes has almost doubled in the last 30 years.2
~Malaria has spread to higher altitudes in places like the Colombian Andes, 7,000 feet above sea level.3
~The flow of ice from glaciers in Greenland has more than doubled over the past decade.4
~At least 279 species of plants and animals are already responding to global warming, moving closer to the poles.5
There is no doubt we can solve this problem. In fact, we have a moral obligation to do so. Small changes to your daily routine can add up to big differences in helping to stop global warming. The time to come together to solve this problem is now – TAKE ACTION”
1 According to the Intergovernmental Panel on Climate Change (IPCC), this era of global warming "is unlikely to be entirely natural in origin" and "the balance of evidence suggests a discernible human influence of the global climate."
2 Emanuel, K. 2005. Increasing destructiveness of tropical cyclones over the past 30 years. Nature 436: 686-688.
3 World Health Organization
4 Krabill, W., E. Hanna, P. Huybrechts, W. Abdalati, J. Cappelen, B. Csatho, E. Frefick, S. Manizade, C. Martin, J, Sonntag, R. Swift, R. Thomas and J. Yungel. 2004. Greenland Ice Sheet: Increased coastal thinning. Geophysical Research Letters 31.
5 Nature
“Carbon dioxide and other gases warm the surface of the planet naturally by trapping solar heat in the atmosphere. This is a good thing because it keeps our planet habitable. However, by burning fossil fuels such as coal, gas and oil and clearing forests we have dramatically increased the amount of carbon dioxide in the Earth’s atmosphere and temperatures are rising.
The vast majority of scientists agree that global warming is real, it’s already happening and that it is the result of our activities and not a natural occurrence.1 The evidence is overwhelming and undeniable.
We’re already seeing changes. Glaciers are melting, plants and animals are being forced from their habitat, and the number of severe storms and droughts is increasing.
~The number of Category 4 and 5 hurricanes has almost doubled in the last 30 years.2
~Malaria has spread to higher altitudes in places like the Colombian Andes, 7,000 feet above sea level.3
~The flow of ice from glaciers in Greenland has more than doubled over the past decade.4
~At least 279 species of plants and animals are already responding to global warming, moving closer to the poles.5
There is no doubt we can solve this problem. In fact, we have a moral obligation to do so. Small changes to your daily routine can add up to big differences in helping to stop global warming. The time to come together to solve this problem is now – TAKE ACTION”
1 According to the Intergovernmental Panel on Climate Change (IPCC), this era of global warming "is unlikely to be entirely natural in origin" and "the balance of evidence suggests a discernible human influence of the global climate."
2 Emanuel, K. 2005. Increasing destructiveness of tropical cyclones over the past 30 years. Nature 436: 686-688.
3 World Health Organization
4 Krabill, W., E. Hanna, P. Huybrechts, W. Abdalati, J. Cappelen, B. Csatho, E. Frefick, S. Manizade, C. Martin, J, Sonntag, R. Swift, R. Thomas and J. Yungel. 2004. Greenland Ice Sheet: Increased coastal thinning. Geophysical Research Letters 31.
5 Nature
The text you are quoting:
Here is a quote from www.climatecrisis.org, the website that is linked to the move “An Inconvienient Truth”, which EVERONE should see!
“Carbon dioxide and other gases warm the surface of the planet naturally by trapping solar heat in the atmosphere. This is a good thing because it keeps our planet habitable. However, by burning fossil fuels such as coal, gas and oil and clearing forests we have dramatically increased the amount of carbon dioxide in the Earth’s atmosphere and temperatures are rising.
The vast majority of scientists agree that global warming is real, it’s already happening and that it is the result of our activities and not a natural occurrence.1 The evidence is overwhelming and undeniable.
We’re already seeing changes. Glaciers are melting, plants and animals are being forced from their habitat, and the number of severe storms and droughts is increasing.
~The number of Category 4 and 5 hurricanes has almost doubled in the last 30 years.2
~Malaria has spread to higher altitudes in places like the Colombian Andes, 7,000 feet above sea level.3
~The flow of ice from glaciers in Greenland has more than doubled over the past decade.4
~At least 279 species of plants and animals are already responding to global warming, moving closer to the poles.5
There is no doubt we can solve this problem. In fact, we have a moral obligation to do so. Small changes to your daily routine can add up to big differences in helping to stop global warming. The time to come together to solve this problem is now – TAKE ACTION”
1 According to the Intergovernmental Panel on Climate Change (IPCC), this era of global warming "is unlikely to be entirely natural in origin" and "the balance of evidence suggests a discernible human influence of the global climate."
2 Emanuel, K. 2005. Increasing destructiveness of tropical cyclones over the past 30 years. Nature 436: 686-688.
3 World Health Organization
4 Krabill, W., E. Hanna, P. Huybrechts, W. Abdalati, J. Cappelen, B. Csatho, E. Frefick, S. Manizade, C. Martin, J, Sonntag, R. Swift, R. Thomas and J. Yungel. 2004. Greenland Ice Sheet: Increased coastal thinning. Geophysical Research Letters 31.
5 Nature
Debbie, Feb 12, 2007 @ 15:39
“Carbon dioxide and other gases warm the surface of the planet naturally by trapping solar heat in the atmosphere. This is a good thing because it keeps our planet habitable. However, by burning fossil fuels such as coal, gas and oil and clearing forests we have dramatically increased the amount of carbon dioxide in the Earth’s atmosphere and temperatures are rising.
The vast majority of scientists agree that global warming is real, it’s already happening and that it is the result of our activities and not a natural occurrence.1 The evidence is overwhelming and undeniable.
We’re already seeing changes. Glaciers are melting, plants and animals are being forced from their habitat, and the number of severe storms and droughts is increasing.
~The number of Category 4 and 5 hurricanes has almost doubled in the last 30 years.2
~Malaria has spread to higher altitudes in places like the Colombian Andes, 7,000 feet above sea level.3
~The flow of ice from glaciers in Greenland has more than doubled over the past decade.4
~At least 279 species of plants and animals are already responding to global warming, moving closer to the poles.5
There is no doubt we can solve this problem. In fact, we have a moral obligation to do so. Small changes to your daily routine can add up to big differences in helping to stop global warming. The time to come together to solve this problem is now – TAKE ACTION”
1 According to the Intergovernmental Panel on Climate Change (IPCC), this era of global warming "is unlikely to be entirely natural in origin" and "the balance of evidence suggests a discernible human influence of the global climate."
2 Emanuel, K. 2005. Increasing destructiveness of tropical cyclones over the past 30 years. Nature 436: 686-688.
3 World Health Organization
4 Krabill, W., E. Hanna, P. Huybrechts, W. Abdalati, J. Cappelen, B. Csatho, E. Frefick, S. Manizade, C. Martin, J, Sonntag, R. Swift, R. Thomas and J. Yungel. 2004. Greenland Ice Sheet: Increased coastal thinning. Geophysical Research Letters 31.
5 Nature
Debbie, Feb 12, 2007 @ 15:39
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