Climate Variability


 
 
Concept Explanation
 

Climate Variability

Climate Variability: In recent usage, especially in the context of environmental policy, the term "climate change" often refers to changes in modern climate. Climate change is the variation in the Earth's global climate or in regional climates over time. It involves changes in the variability or average state of the atmosphere over durations ranging from decades to millions of years. These changes can be caused by dynamic process on Earth,external forces including variations in sunlight intensity, and more recently by human activities.Climate changes can include changes in the avernge temperature, amount of precipitabon, days of sunlight, and odier Variables that might be measured at any given site. However, there are also chamges within the Earth s environnent that can affect the climate such as Glaciations. Glaciers are recognised as being among the most sensitive indicators of climate change, advancing substantially during climate cooling (e.g. the Little Ice Age) and retreating during climate warming on moderate time scales. Glaciers grow and collapse, both contributing to natural variability and greatly amplifying externally forced changes. For the last century, however, glaciers have been unable to regenerate enough ice during the winters to make up for the ice lost during the summer months.

Anthropogenic: Anthropogenic etfects, processes, objects, or materials are those that are derived from human activities, as opposed to those occurring in natural environments without human influences. Anthropogenic literally means "producing man". The correct term for produced by man would be anthropogenous. Anthropogenic sources include industry, agriculture, mining  transportation, construction, habitations and deforestation.

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