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Distinguish From: 

n. ~ The physical conditions within a storage enclosure, especially as regards the interaction of trapped, still air immediately surrounding an object.


In the context of preservation, 'microenvironment' connotes the environment within an enclosure holding an item, such as a polyester sleeve, a CD jewel case, or a paper envelope. While such an enclosure can provide a barrier against external conditions, it can accelerate deterioration of the item by trapping undesirable chemicals in the item. For example, a polyester sleeve can capture and concentrate gases from a decomposing nitrate negative. Microenvironments are distinguished from microclimates, the latter describing physical conditions within an enclosed space that is significantly larger, such as a display case.