Klimaatsverandering
Tegenwoordig zien we in de media steeds meer het onderwerp klimaatsverandering de kop op steken, met het daarbij horende verhaal dat dat zou komen doordat we te veel CO2 de lucht in slingeren. Hierdoor zou een broeikaseffect ontstaan, en als dat zo doorgaat dan hebben we hier binnenkort een klimaat waarin palmbomen goed gedijen.
Wat ik dan weer niet zo goed begrijp is hoe het komt dat door al onze uitlaatgassen ook andere planeten in ons zonnestelsel opwarmen. Dezelfde tendens die we op aarde zien, is daar ook te zien!
natuurlijk wil ik niet suggereren dat we niets moeten doen om ervoor te zorgen dat onze atmosfeer schoon word/blijft, maar er zitten toch wat meer haken en ogen aan het verhaal.
Uit een artikel:
Global warming has finally been explained: the Earth is getting hotter because the Sun is burning more brightly than at any time during the past 1,000 years, according to new research. A study by Swiss and German scientists suggests that increasing radiation from the sun is responsible for recent global climate changes. Dr Sami Solanki, the director of the renowned Max Planck Institute for Solar System Research in Gottingen, Germany, who led the research, said: "The Sun has been at its strongest over the past 60 years and may now be affecting global temperatures. The Sun is in a changed state. It is brighter than it was a few hundred years ago and this brightening started relatively recently - in the last 100 to 150 years." [Telegraph]
Global warming and melting polar ice caps are not just problems here on Earth. Mars is facing similar global changes, researchers say, with temperatures across the red planet rising by around 0.65 degrees over the last few decades.[register]
For about 300 years Jupiter's banded atmosphere has shown a remarkable feature to telescopic viewers, a large swirling storm system known as The Great Red Spot. In 2006, another red storm system appeared, actually seen to form as smaller whitish oval-shaped storms merged and then developed the curious reddish hue. Now, Jupiter has a third red spot, again produced from a smaller whitish storm. ... Jupiter's recent outbreak of red spots is likely related to large scale climate change as the gas giant planet is getting warmer near the equator. [NASA]
Neptune has been getting brighter since around 1980; furthermore, infrared measurements of the planet since 1980 show that the planet has been warming steadily from 1980 to 2004. As they say on Neptune, global warming has become an inconvenient truth. [World Climate Report]
Looking at annual global temperatures, it is apparent that the last decade shows no warming trend and recent successive annual global temperatures are well within each year's measurement errors. Statistically the world's temperature is flat. The world certainly warmed between 1975 and 1998, but in the past 10 years it has not been increasing at the rate it did. No scientist could honestly look at global temperatures over the past decade and see a rising curve. It is undisputed that the sun of the later part of the 20th century was behaving differently from that of the beginning. Its sunspot cycle is stronger and shorter and, technically speaking, its magnetic field leakage is weaker and its cosmic ray shielding effect stronger. So we see that when the sun's activity was rising, the world warmed. When it peaked in activity in the late 1980s, within a few years global warming stalled. [Telegraph]
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Okay, take notes, there will be a quiz at the end of class.
First of all, greenhouse effect is not a bad thing. Without it, our planet would not support life as we know it, as the average temperature would be too cold to support liquid water.
Water vapor is the single most potent greenhouse gas in the atmosphere, trapping more heat than carbon dioxide and methane put together. Estimates of the impact of water vapor on global warming vary widely from a minimum of 60% of all greenhouse effect to 98% of all greenhouse effect, but even at the minimum of 60%, that leaves 40% of greenhouse effect to be shared by all other chemicals combined, including carbon dioxide and methane (which has ten times the greenhouse capacity pound for pound as carbon dioxide).
rest van artikel is hier: http://www.whatreallyhappened.com/globalwarming.html
Wat denken jullie er van?
Wat ik dan weer niet zo goed begrijp is hoe het komt dat door al onze uitlaatgassen ook andere planeten in ons zonnestelsel opwarmen. Dezelfde tendens die we op aarde zien, is daar ook te zien!
natuurlijk wil ik niet suggereren dat we niets moeten doen om ervoor te zorgen dat onze atmosfeer schoon word/blijft, maar er zitten toch wat meer haken en ogen aan het verhaal.
Uit een artikel:
Global warming has finally been explained: the Earth is getting hotter because the Sun is burning more brightly than at any time during the past 1,000 years, according to new research. A study by Swiss and German scientists suggests that increasing radiation from the sun is responsible for recent global climate changes. Dr Sami Solanki, the director of the renowned Max Planck Institute for Solar System Research in Gottingen, Germany, who led the research, said: "The Sun has been at its strongest over the past 60 years and may now be affecting global temperatures. The Sun is in a changed state. It is brighter than it was a few hundred years ago and this brightening started relatively recently - in the last 100 to 150 years." [Telegraph]
Global warming and melting polar ice caps are not just problems here on Earth. Mars is facing similar global changes, researchers say, with temperatures across the red planet rising by around 0.65 degrees over the last few decades.[register]
For about 300 years Jupiter's banded atmosphere has shown a remarkable feature to telescopic viewers, a large swirling storm system known as The Great Red Spot. In 2006, another red storm system appeared, actually seen to form as smaller whitish oval-shaped storms merged and then developed the curious reddish hue. Now, Jupiter has a third red spot, again produced from a smaller whitish storm. ... Jupiter's recent outbreak of red spots is likely related to large scale climate change as the gas giant planet is getting warmer near the equator. [NASA]
Neptune has been getting brighter since around 1980; furthermore, infrared measurements of the planet since 1980 show that the planet has been warming steadily from 1980 to 2004. As they say on Neptune, global warming has become an inconvenient truth. [World Climate Report]
Looking at annual global temperatures, it is apparent that the last decade shows no warming trend and recent successive annual global temperatures are well within each year's measurement errors. Statistically the world's temperature is flat. The world certainly warmed between 1975 and 1998, but in the past 10 years it has not been increasing at the rate it did. No scientist could honestly look at global temperatures over the past decade and see a rising curve. It is undisputed that the sun of the later part of the 20th century was behaving differently from that of the beginning. Its sunspot cycle is stronger and shorter and, technically speaking, its magnetic field leakage is weaker and its cosmic ray shielding effect stronger. So we see that when the sun's activity was rising, the world warmed. When it peaked in activity in the late 1980s, within a few years global warming stalled. [Telegraph]
----------------------------------
Okay, take notes, there will be a quiz at the end of class.
First of all, greenhouse effect is not a bad thing. Without it, our planet would not support life as we know it, as the average temperature would be too cold to support liquid water.
Water vapor is the single most potent greenhouse gas in the atmosphere, trapping more heat than carbon dioxide and methane put together. Estimates of the impact of water vapor on global warming vary widely from a minimum of 60% of all greenhouse effect to 98% of all greenhouse effect, but even at the minimum of 60%, that leaves 40% of greenhouse effect to be shared by all other chemicals combined, including carbon dioxide and methane (which has ten times the greenhouse capacity pound for pound as carbon dioxide).
rest van artikel is hier: http://www.whatreallyhappened.com/globalwarming.html
Wat denken jullie er van?
DrizzleChaser Extraordinaire
