how is sun responsible for all kinds of weather changes
Answers
The Sun is the source of most of the energy that drives the biological and physical processes in the world around us—in oceans and on land it fuels plant growth that forms the base of the food chain, and in the atmosphere it warms air which drives our weather.
Figure 1. Approximately two and a half solar cycles of Total Solar Irradiance (TSI), also called 'solar constant', in power (watts) per square meter. These annual, average TSI measurements were compiled by the Active Cavity Radiometer Irradiance Monitor (ACRIM), the Physikalisch-Meteorologisches Observatorium / World Radiation Center (PMOD), and the Royal Meteorological Institute of Belgium (RMIB).
The rate of energy coming from the Sun changes slightly day to day. Over many millennia the Earth-Sun orbital relationship can change the geographical distribution of the sun’s energy over the Earth’s surface. It has been suggested that changes in solar output might affect our climate—both directly, by changing the rate of solar heating of the Earth and atmosphere, and indirectly, by changing cloud forming processes.
Over the time-scale of millions of years, the change in solar intensity is a critical factor influencing climate (e.g., ice ages). However, changes in the rate of solar heating over the last century cannot account for the magnitude of the rise in global mean temperature since the late 1970s.
Explanation:
The energy that the Earth receives from the Sun is the basic cause of our changing weather. Solar heat warms the huge air masses that comprise large and small weather systems. The day-night and summer-winter cycles in the weather have obvious causes and effects. Are there other, more subtle ways in which the Sun affects weather and climate? Will the future climate - even our survival - depend on sunspots, flares, coronal holes, or other forms of solar activity? If so, can future trends be predicted?
The effects of currently observed changes in the Sun - small variations in light output, the occurrence of solar particle streams and magnetic fields are very small in the Earth's lower atmosphere or troposphere where our weather actually occurs. However, at higher altitudes, the atmosphere reacts strongly to changes in solar activity. The ozone layer, at an altitude of 25 kilometers (16 miles), and the ionosphere, which extends upwards in a series of layers above 60 kilometers (37 miles), are produced by solar ultraviolet light and X-rays which ionize the thin air at these altitudes. Although the visible light of the Sun is stable, large variations in X-ray and ultraviolet radiation accompany solar activity, and these variations on the Sun cause major changes in the ionosphere. Some meteorologists be lieve that the ionospheric changes in turn influence the weather in the lower atmosphere, but the physical mechanism by which this may occur has not been definitely identified. There is much research under way or possible relationships between solar activity and the weather.
A study of short-term weather patterns by Walter Orr Roberts of the University Corporation for Atmospheric Research and Roger H. Olson of NOAA suggests that weather may be affected as the spiral-shaped interplanetary magnetic field rotates past the Earth. They found that about a day after the boundary between inward-pointing and outward-pointing sectors sweeps by, there is a decrease in the number of low pressure weather systems forming in the Pacific Ocean off the western United States and Canada. Because