solar insolation
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Solar insolation refers to the amount of solar energy that reaches a given area of the earth's surface over a certain period of time. It is usually measured in units of watts per square meter (W/m2). Insolation is affected by factors such as the time of day, season, latitude, altitude, and atmospheric conditions, such as cloud cover or air pollution. Insolation is important in various fields, including solar energy research, agriculture, and climate modeling.