Historical Meteorology; New Branch in the Domain of Meteorological Knowledge; Case of Shiraz Ecosystem

This article provides small examples of how to use reliable and documented historical literature to help understand temperature and meteorological conditions. Anywhere information on frost, cold, temperature, precipitation (snow or rain) with date and day is included can be meteorological information. However, as with today's meteorological, the temperature or precipitation characteristics cannot be quantitatively extracted, Only qualitative information can be used. Thus, one can call this discovery a branch of meteorological knowledge, "historical meteorology". Findings from this knowledge can help to identify periods of famine, how to balance aquifers and lakes, and so on. Looking at this branch of meteorological knowledge is the solution to the drought problem.