In the v4_Outdoor Water Use Reduction Calculator, there is a tab where you need to key in the Monthly Rainfall and Evaportranspiration Rate (ETo) for the location of the project.
I've been scouring the internet for the Evapotranspiration Rate of Singapore but for the life of me, I could not find it. Is there a way to compute the ETo based on other readily available climate/weather data for a given location?
Thanks.
Afogreen Build
www.afogreenbuild.comGreen Building Consultant
214 thumbs up
November 18, 2020 - 5:27 am
Hi,
We can use ETo data from this website http://wcatlas.iwmi.org/Default.asp
You require to enter the latitude and longitude of your project, choose climate variables (ETo is Penman-Montieth (mm/d)), then click submit. Then you can get the ETo for each month from January to December for your site.
Thanks
Priscilla Joseph
3 thumbs up
March 23, 2022 - 7:05 am
@Afogreen Build
The website no longer has the IWMI Online Climate Summary Service Portal with the ETo values, what is the new source you are using?
Thanks.
Priscilla Joseph
3 thumbs up
February 7, 2023 - 2:00 am
After almost a year, I have a new source to obtain ETo values - FAO Climate Info Tool. Just input the name of the city and you get both historical rainfall and ETo data.