Where to find Evapotranspiration Rates of a location?

Zirjay Villanueva

G-Energy Global Pte Ltd

LEEDuser Basic Member

0 thumbs up

Project location :

Singapore

October 28, 2020

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.

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Afogreen Build

www.afogreenbuild.com

Green Building Consultant

LEEDuser Premium Member

249 thumbs up

Wed, 11/18/2020 - 10:27

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

LEEDuser Basic Member

3 thumbs up

Wed, 03/23/2022 - 11:05

@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

LEEDuser Basic Member

3 thumbs up

Tue, 02/07/2023 - 07:00

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.