1. A narrative account of the ME WMDFZ, freely accessible via UNIDIR's website, with key chronologies, annexes and data;

2. Chronology (countable and uncountable, plural chronologies) (uncountable) the science of determining the order in which events occurred

3. Laboratory techniques developed particularly after mid-20th century helped constantly revise and refine the chronologies developed for specific cultural areas.

4. The Chronology extends many years earlier than the medieval period, during which two major drought events in that region already were known from previous chronologies