Genghis Kush
Active member
"the sun is controlling our climate"
or is it the atmosphere ?
a planets climate is dictated by the make up of its atmosphere and its distance from the sun.
@Trichrider Its very simple. If you think air pollution is nothing more than something that is unsightly, this will explain to you how clogging the atmosphere with CO2 alters the temperature of the earth. There is nothing to debate.
"The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be in the absence of its atmosphere.[1][2] If a planet's atmosphere contains radiatively active gases (i.e. greenhouse gases) the atmosphere radiates energy in all directions. Part of this radiation is directed towards the surface, warming it.
On Earth, solar radiation at the frequencies of visible light largely passes through the atmosphere to warm the planetary surface. The surface itself emits energy at the lower frequencies of infrared thermal radiation. Infrared radiation is absorbed by greenhouse gases in the atmosphere. These gases also radiate energy, some of which is directed to the surface and lower atmosphere. The mechanism is named after the effect of solar radiation passing through glass and warming a greenhouse, but the way it retains heat is fundamentally different as a greenhouse works by reducing airflow, isolating the warm air inside the structure so that heat is not lost by convection.[2][3][4]
If an ideal thermally conductive blackbody were the same distance from the Sun as Earth is, it would have a temperature of about 5.3 °C. However, because Earth reflects about 30%[5][6] of the incoming sunlight, this idealized planet's effective temperature (the temperature of a blackbody that would emit the same amount of radiation) would be about −18 °C.[7][8] The surface temperature of this hypothetical planet is 33 °C below Earth's actual surface temperature of approximately 14 °C.[9] The mechanism that produces this difference between the actual surface temperature and the effective temperature is due to the atmosphere and is known as the greenhouse effect.[10]
Earth’s natural greenhouse effect is critical to supporting life. Human activities, primarily the burning of fossil fuels and clearing of forests, have intensified the natural greenhouse effect, causing global warming.[11]
Strengthening of the greenhouse effect through human activities is known as the enhanced (or anthropogenic) greenhouse effect.[23] This increase in radiative forcing from human activity is attributable mainly to increased atmospheric carbon dioxide levels.[24] According to the latest Assessment Report from the Intergovernmental Panel on Climate Change, "atmospheric concentrations of carbon dioxide, methane and nitrous oxide are unprecedented in at least the last 800,000 years. Their effects, together with those of other anthropogenic drivers, have been detected throughout the climate system and are extremely likely to have been the dominant cause of the observed warming since the mid-20th century".[25]
CO2 is produced by fossil fuel burning and other activities such as cement production and tropical deforestation.[26] Measurements of CO2 from the Mauna Loa observatory show that concentrations have increased from about 313 ppm[27] in 1960 to about 389 ppm in 2010. It reached the 400ppm milestone on May 9, 2013.[28] The current observed amount of CO2 exceeds the geological record maxima (~300 ppm) from ice core data.[29] The effect of combustion-produced carbon dioxide on the global climate, a special case of the greenhouse effect first described in 1896 by Svante Arrhenius, has also been called the Callendar effect.
Over the past 800,000 years,[30] ice core data shows that carbon dioxide has varied from values as low as 180 parts per million (ppm) to the pre-industrial level of 270ppm.[31] Paleoclimatologists consider variations in carbon dioxide concentration to be a fundamental factor influencing climate variations over this time scale."
or is it the atmosphere ?
a planets climate is dictated by the make up of its atmosphere and its distance from the sun.
@Trichrider Its very simple. If you think air pollution is nothing more than something that is unsightly, this will explain to you how clogging the atmosphere with CO2 alters the temperature of the earth. There is nothing to debate.
"The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be in the absence of its atmosphere.[1][2] If a planet's atmosphere contains radiatively active gases (i.e. greenhouse gases) the atmosphere radiates energy in all directions. Part of this radiation is directed towards the surface, warming it.
On Earth, solar radiation at the frequencies of visible light largely passes through the atmosphere to warm the planetary surface. The surface itself emits energy at the lower frequencies of infrared thermal radiation. Infrared radiation is absorbed by greenhouse gases in the atmosphere. These gases also radiate energy, some of which is directed to the surface and lower atmosphere. The mechanism is named after the effect of solar radiation passing through glass and warming a greenhouse, but the way it retains heat is fundamentally different as a greenhouse works by reducing airflow, isolating the warm air inside the structure so that heat is not lost by convection.[2][3][4]
If an ideal thermally conductive blackbody were the same distance from the Sun as Earth is, it would have a temperature of about 5.3 °C. However, because Earth reflects about 30%[5][6] of the incoming sunlight, this idealized planet's effective temperature (the temperature of a blackbody that would emit the same amount of radiation) would be about −18 °C.[7][8] The surface temperature of this hypothetical planet is 33 °C below Earth's actual surface temperature of approximately 14 °C.[9] The mechanism that produces this difference between the actual surface temperature and the effective temperature is due to the atmosphere and is known as the greenhouse effect.[10]
Earth’s natural greenhouse effect is critical to supporting life. Human activities, primarily the burning of fossil fuels and clearing of forests, have intensified the natural greenhouse effect, causing global warming.[11]
Strengthening of the greenhouse effect through human activities is known as the enhanced (or anthropogenic) greenhouse effect.[23] This increase in radiative forcing from human activity is attributable mainly to increased atmospheric carbon dioxide levels.[24] According to the latest Assessment Report from the Intergovernmental Panel on Climate Change, "atmospheric concentrations of carbon dioxide, methane and nitrous oxide are unprecedented in at least the last 800,000 years. Their effects, together with those of other anthropogenic drivers, have been detected throughout the climate system and are extremely likely to have been the dominant cause of the observed warming since the mid-20th century".[25]
CO2 is produced by fossil fuel burning and other activities such as cement production and tropical deforestation.[26] Measurements of CO2 from the Mauna Loa observatory show that concentrations have increased from about 313 ppm[27] in 1960 to about 389 ppm in 2010. It reached the 400ppm milestone on May 9, 2013.[28] The current observed amount of CO2 exceeds the geological record maxima (~300 ppm) from ice core data.[29] The effect of combustion-produced carbon dioxide on the global climate, a special case of the greenhouse effect first described in 1896 by Svante Arrhenius, has also been called the Callendar effect.
Over the past 800,000 years,[30] ice core data shows that carbon dioxide has varied from values as low as 180 parts per million (ppm) to the pre-industrial level of 270ppm.[31] Paleoclimatologists consider variations in carbon dioxide concentration to be a fundamental factor influencing climate variations over this time scale."