1. I have applied Hargreaves’ Method to estimate daily ETo , but most of the results seem to be unrealistic.
2. Penman-Monteith equation requires a bundle of data, which is not available in my case.
3. Is Thornwaite method feasible or applicable for "daily ETo"? if yes then any reference study ?
4. Moreover, is there any other method which can be utilize to estimate "daily ETo" with minimum data input .?