CLIMATE CHANGE Long-term shift in weather conditions identified by changes in temperature, precipitation, winds, and other indicators. Involve both changes in average conditions and changes in variability, including, for example, frequency of extreme events. May be positive or negative. CAUSES OF CLIMATE CHANGE Any factor that causes a sustained change to the amount of incoming energy or the amount of outgoing energy can lead to climate change. Factors that cause climate change can be divided into two categories - those related to natural processes and those related to human activity. Natural Causes The Earth's climate can be affected by natural factors that are external to the climate system, such as changes in volcanic activity, solar output, and the Earth's orbit around the Sun .the two factors relevant on timescales of contemporary climate change are changes in volcanic activity and changes in solar radiation.
ESE PRELIMS PAPER 1 BASICS OF ENERGY AND ENRONMENT
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