Line 1:
Line 1:
==Calculation==
==Calculation==
===Thornthwaite Mather method===
===Thornthwaite Mather method <ref>Thornthwaite, C. W., and Mather, J. R., Instructions and Tables for Computing Potential Evapotranspiration and the Water Balance, Drexel Institute of Technology, Laboratory of Climatology, 1957.</ref>===
Step 1. Calculate the monthly heat index (i):
Step 1. Calculate the monthly heat index (i):