Currently, we use forecasted days (lead 1-6 month) compared to historical periods 1980-1989, 200-2009, 2010-2019 (daily time step). Currently, year 2019 is on demonstration. Later, each month will update the next 6 month forecasting
The Asean Water Portal can provide data, such as Discharge (COUT-m3/s), specific discharge (SPEQ-mm/day), upstream corrected precipitation (UPCPRC-mm/day), upstream actual evaporation (upEVAP-mm/day), upstream potential evaporation (upEPOT-mm/day), local actual evaporation (EVAP-mm/day), local potential evaporation (EPOT-mm/day), (local corrected precipitation (CPRC-mm/day) soil moisture root zone (SMRZ-mm/day), air temperature (TEMP-o C).
This model is forced with Precipitation and Temperature NCEP CFSv2: https://nomads.ncep.noaa.gov/txt_descriptions/CFS_doc.shtml