microenvironment

n.  the physical conditions of temperature, air quality, relative humidity, and other factors that exist in immediate proximity to archival records, such as within an envelope, box, film can, exhibit case, or the film of air surrounding the bound volumes on a shelf

Notes

The term microenvironment and microclimate are often used interchangeably in the archival literature, although microenvironment is often used to describe the phenomenon in which an enclosure holding an item accelerates deterioration of the item by trapping undesirable chemicals in the item's immediate environment.DMS
  • Preservation and Conservation