The earth does possess an internal energy source, and this can have an effect on weather patterns too, however the amount of energy contained within the planet is tiny in comparison to the amount received from solar radiation. These are the particles that come from the sun at a high rate of speed and when they pass through the human and the atmosphere, they will cause genetic change in humans and can damage the electronics of the satellite. Today Earth is closest to the Sun (perihelion) near the December solstice, whereas 9,000 years … At the same time, the extra sunlight causes more evaporation off the ocean, which adds to downpours in the western tropics. Therefore, on the day of the summer solstice, the sun appears at its highest elevation with a noontime position that changes very little for several days before and after the summer solstice. Although ecosystems, plants, and animals cannot adjust their attire quite so easily, they have evolved to make changes that help them survive seasonal conditions caused by the rotation of the Earth around the sun. When the sun is at its most intense, ozone in the stratosphere absorbs more ultraviolet energy, making areas near the equator warmer than usual. Near June 21st, the summer solstice, the Earth is tilted such that the Sun is positioned directly over the Tropic of Cancer at 23.5 degrees north latitude. The very word climate (from Greek klimat, inclination or latitude) originally stood for a simple band of latitude.When scientists began to ponder the possibility of climate change, their thoughts naturally turned to the Sun. You may change your wardrobe with the seasons, grabbing a heavy coat in winter, while wearing only a light t-shirt in summer. This is why the Earth's 23.5 degree tilt is all important in changing our seasons. The Sun’s role in global warming will become clearer as more time passes, as longer data records will be available for study. But this distance change is not great enough to cause any substantial difference in our climate. Small changes in the sun's brightness can have big impacts on our planet's weather and climate. Both space weather and terrestrial (Earth) weather—the weather we feel at the surface—are influenced by the small changes the Sun undergoes during its solar cycle. ... in which the position of Earth at the equinoxes and solstices changes. And now scientists have detailed how that process might work, according to … The simpliest solar cycle definition is: “The solar cycle is the cycle that the Sun’s magnetic field goes through approximately every 11 years.” (Figure 1) Based on the data, it is believed that the Sun’s change in radiative forcing (~ 0.09 W/m 2) since the start of industrial era (about 1750) is much less than that of greenhouse gases (~ 2.6 W/m 2) . 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