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Area calculation consistency over time for thematic maps

Question asked by joseph.grinnell on Mar 10, 2020
Latest reply on Mar 11, 2020 by joseph.grinnell

Given a large land conservation project that is supposed to be monitored over 100 years and principally uses remote sensing to map and update various thematic classes that change over time with ecological dynamics and land use, I'm trying to understand how changes over this 100 year period in remote sensing datasets and Earth's physical surface (quantified via International Terrestrial Reference Frame (ITRF) versions) could affect the area calculations of the project's large strata.  What tool or methodology would one follow to transform future datums/coordinate systems to the original version used for baseline area calculations, to maintain consistency between calculations as ITRFs change?