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All Topics | Topic "Climate Change Impact on water availability and demands"
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Author Message
Miss Silpa Senan

Subject: Climate Change Impact on water availability and demands   
Posted: 2/12/2021 Viewed: 863 times
Hai all,
I have to study the variation in water demand and water availability in a river basin due to climate change. The GCM data available for the study is from 2015 to 2099. The future flow in each subbasin was simulated in SWAT model and the same have to be used as head flow input data in WEAP model.
1. Is it possible to fix my current account year as 2021 and scenarios as
2022-2040, 2041-2070, 2071-2099?
2. If I choose monthly time step in the model, then can I use daily head
flow data by selecting 'read from file wizard' option as in case of
climate data input for Mabia method?

I'd be very grateful for your suggestions.


Thanks,
Silpa Senan

Ms. Anne Hereford

Subject: Re: Climate Change Impact on water availability and demands   
Posted: 2/12/2021 Viewed: 855 times
Dear Silpa,
Thank you for your questions.

1. Yes, it is possible to change your current accounts year to 2021. It is not possible to have your scenarios begin later than the current accounts year. However, you can choose to only view results for the years you're interested in.

2. Yes. You can configure inside WEAP how the model will aggregate the daily data to fit in your monthly model.

Anne
Miss Silpa Senan

Subject: Re: Climate Change Impact on water availability and demands   
Posted: 2/13/2021 Viewed: 846 times
Thank you so much for your valuable suggestions. I have one more doubt. If I have to study the variation in water demand and supply for future years (2021-2099), then can I fix my current account year as 2021 and reference scenario as 2022-2099? My doubt is that can we use such a long period as a scenario.

Please help me to clear this doubt.

Thanks,
Silpa Senan
Ms. Anne Hereford

Subject: Re: Climate Change Impact on water availability and demands   
Posted: 2/14/2021 Viewed: 839 times
Hi Silpa,
There is no technical limitation that would prevent you from extending your scenarios to 2099. Results calculations will take a little longer than for a shorter scenario span. And, of course, as with all models, the farther out your scenario predicts, the more uncertainty is inherent in the model.

Anne
Miss Silpa Senan

Subject: Re: Climate Change Impact on water availability and demands   
Posted: 2/16/2021 Viewed: 834 times
Thank you so much for your reply.

My study area has an area of about 2932 km2. Which is the most suitable time step (daily or monthly) that can be adopted to estimate the future water demand in the river basin?
Can you please explain the reason also?

Thanks,
Silpa Senan
Ms. Anne Hereford

Subject: Re: Climate Change Impact on water availability and demands   
Posted: 2/16/2021 Viewed: 830 times
Please see this previous post for tips on how to select a timestep for your model:

https://www.weap21.org/index.asp?action=9&read=3193&fID=30

All the best,
Anne
Miss Silpa Senan

Subject: Re: Climate Change Impact on water availability and demands   
Posted: 2/16/2021 Viewed: 826 times
Thank you.
Topic "Climate Change Impact on water availability and demands"