Welcome to WEAP's Website
WEAP
WEAP is an initiative of the Stockholm Environment Institute.


About WEAP

Home
Why WEAP?
Features
What's New?
Sample Screens
Demonstration
Applications
Publications
History and Credits

Using WEAP
Download
Licensing
User Guide
Tutorial
Videos
Resources

User Forum
Discussions
Members List
Edit Profile

Additional Support
Training
University Courses
Collaboration

About Us
SEI-US Water Resources Program
Please Contact Us


Environmental News
LEAP
Interested in Energy?
Read about LEAP: SEI's software for energy planning.

User Forum

All Topics | Topic "Re: Project precipitation and ETref"
Log in to post new messages or reply to existing messages.
 
Author Message
Majid Vali

Subject: Re: Project precipitation and ETref   
Posted: 12/11/2015 Viewed: 3358 times
Hi Pham,
I used ARMA model to forecast precipitation (yearly) and consequently river inflow. but this model considers a stationary conditions in variable time series that is not matchs with climate change concepts.a more complicated techniques is SSA(singular spectrum analysis),artificial nural network,wave theory and ... . also you can see USGS hydroCLIMATE software.
Pham Quoc

Subject: Re: Project precipitation and ETref   
Posted: 12/11/2015 Viewed: 3351 times
Thank you so much for your suggestion
I would like to make sure something.
if I use ARMA model, I just got yearly data, right?
But I need monthly data to input into WEAP model.
Because my study area is about 2200 km2. So, After use some kind of model to project precipitation and temperature, I also have to downscalling.
Pham Quoc
Majid Vali

Subject: Re: Project precipitation and ETref   
Posted: 12/12/2015 Viewed: 3344 times
Dear Pham,
ARMA result period depend on your input period, if you develop a monthly model, your model results are in monthly scale, thus you have no problem with time scale. also WEAP have flexibility in time steps (data view,general,years and time steps). on the other hand ARMA,ARIMA,SSA,... models are temporal models, not spatially distributed models.
Pham Quoc

Subject: Re: Project precipitation and ETref   
Posted: 12/30/2015 Viewed: 3267 times
Thank you so much Majid Vali !
Topic "Re: Project precipitation and ETref"