[ad_1]
<div _ngcontent-c14 = "" innerhtml = "
"I've heard that sunspots were the main factor in temperature changes." "And the great solar minimum?" "We are moving towards a new ice age based on orbital parameters." "Cosmic Rays cause the warming of the Earth! "
The online community is full of people passionately advocating for cosmic explanations to account for the change in global temperatures since the industrial revolution. Why is it? Is there a core of truth in their arguments? Let's separate the fact from fiction.
The Earth is a celestial body whose temperature is the result of residual heat resulting from the formation of the planet, radioactive decay, solar energy input and greenhouse gases into the atmosphere. In the course of human history, the heat released by the interior of the planet and by radioactive decay is essentially unchanged. The remaining heat is therefore a function of solar (and extra-solar) inputs and greenhouse gases in the atmosphere.
Photo of Sun from Wikipedia. Source: https://en.wikipedia.org/wiki/Solar_energy#/media/File:Neapolitan_Sunset.jpg
Wikipedia User: Jessie Eastland
Solar spots: Solar energy increases and decreases at several time scales due to internal changes in the Sun's energy output. The most famous is the 11-year sunspot cycle. At the bottom of the cycle (we are currently near the bottom of the cycle), solar energy on the surface of the Earth drops of about 0.1%. A study noted a Ocean warming of 0.1 & deg; C for 1 Wm-2 change of solar energy. The difference between the maximum and the minimum of a solar cycle is about 1-2 Wm-2. This difference is not nothing, but it is far from explaining much of the temperature rise observed during the last century. On longer time scales, solar production changes every 100 years. These changes represent important inputs for the pre-industrialization climate.
Enlarged photo of sunspots.
Alan Friedman (Goddard of NASA)
Orbital Variations: The scientific community does not doubt that orbital variations are the key variable that has forced Earth to enter and exit glaciation over the last 2 million years. The changes in the orbital eccentricity of the Earth, the angle of inclination of the axis, and the orientation of this axis cause significant changes in the solar energy received at the surface of the Earth. Milutin Milankovitch discovered this relationship more than 100 years ago. Orbital and axial change cycles occur at time scales ranging from tens of thousands to over one hundred thousand years – much longer than human time scales or civilization scales.
What about cosmic rays? Speculation about the effect of cosmic rays on cloud formation received considerable attention a decade ago. Since, complementary studies have poured cold water on the idea.
What about magnetic pole inversions? It is at this point that the north and south magnetic poles rock polarity at time scales of several hundreds of thousands of years. In addition to the absence of theoretical link with the climate, the recurrence interval is too long to explain any variation observed.
What about supernovae? LOL.
Most of the warming is the result of Greenhouse gases emitted by human activity. Period. & Nbsp; There is overwhelming consensus on this point in the scientific community.
It is interesting to attribute our global warming to forces beyond our control. This a) relieves us of any responsibility for causing the observed warming, and b) provides a kind of assurance that we will eventually return to a state of equilibrium. For several hundred years, a philosophical debate has erupted over the compatibility or non-compatibility of science and religion, or between the two. Ironically, those who place the attribution of global warming out of bounds of the Earth use the same arguments as those used by creationists and other religious predators; that causes are in heaven and that we are at the mercy of forces beyond our control.
">
"I've heard that sunspots were the main factor in temperature changes." "And the great solar minimum?" "We are moving towards a new ice age based on orbital parameters." "Cosmic Rays cause the warming of the Earth! "
The online community is full of people passionately advocating for cosmic explanations to account for the change in global temperatures since the industrial revolution. Why is it? Is there a core of truth in their arguments? Let's separate the fact from fiction.
The Earth is a celestial body whose temperature is the result of residual heat resulting from the formation of the planet, radioactive decay, solar energy input and greenhouse gases into the atmosphere. In the course of human history, the heat released by the interior of the planet and by radioactive decay is essentially unchanged. The remaining heat is therefore a function of solar (and extra-solar) inputs and greenhouse gases in the atmosphere.
Photo of Sun from Wikipedia. Source: https://en.wikipedia.org/wiki/Solar_energy#/media/File:Neapolitan_Sunset.jpg
Wikipedia User: Jessie Eastland
Solar spots: Solar energy increases and decreases at several time scales due to internal changes in the Sun's energy output. The most famous is the 11-year sunspot cycle. At the bottom of the cycle (we are almost at the bottom of the cycle), solar energy on the Earth's surface decreases by about 0.1%. One study noted ocean warming of 0.1 ° C for 1 Wm-2 change of solar energy. The difference between the maximum and the minimum of a solar cycle is about 1-2 Wm-2. This difference is not nothing, but it is far from explaining much of the temperature rise observed during the last century. On longer time scales, solar production changes every 100 years. These changes represent important inputs for the pre-industrialization climate.
Enlarged photo of sunspots.
Alan Friedman (Goddard of NASA)
Orbital Variations: The scientific community does not doubt that orbital variations are the key variable that has forced Earth to enter and exit glaciation over the last 2 million years. The changes in the orbital eccentricity of the Earth, the angle of inclination of the axis, and the orientation of this axis cause significant changes in the solar energy received at the surface of the Earth. Milutin Milankovitch discovered this relationship more than 100 years ago. Orbital and axial change cycles occur at time scales ranging from tens of thousands to over one hundred thousand years – much longer than human time scales or civilization scales.
What about cosmic rays? Speculation about the effect of cosmic rays on cloud formation received considerable attention a decade ago. Since then, additional studies have thrown cold water on the idea.
What about magnetic pole inversions? It is at this point that the north and south magnetic poles rock polarity at time scales of several hundreds of thousands of years. In addition to the absence of theoretical link with the climate, the recurrence interval is too long to explain any variation observed.
What about supernovae? LOL.
Most of the warming results from greenhouse gases emitted by human activity. Period. There is overwhelming consensus on this point in the scientific community.
It is interesting to attribute our global warming to forces beyond our control. This a) relieves us of any responsibility for causing the observed warming, and b) provides a kind of assurance that we will eventually return to a state of equilibrium. For several hundred years, a philosophical debate has erupted over the compatibility or non-compatibility of science and religion, or between the two. Ironically, those who place the attribution of global warming out of bounds of the Earth use the same arguments as those used by creationists and other religious predators; namely, causes are in heaven and we are at the mercy of forces beyond our control.