Subject: Downloading CMIP6 Climate Models Using Automatic Catchment Delineation Mode for Climate Model Evaluation Posted: 11/5/2024 Viewed: 393 times
Dear All,
I would like to download climate data for 10 climate models from CMIP6 using the Automatic Catchment Delineation mode in WEAP. However, the Load Climate Data option only allows selection of one climate model at a time. How can I download data for all 10 climate models using Automatic Catchment Delineation and set up a comparison of results from each model within WEAP?
Any assistance would be greatly appreciated.
Thank you!
Selam
Mr. Doug Chalmers
Subject: Re: Downloading CMIP6 Climate Models Using Automatic Catchment Delineation Mode for Climate Model Evaluation Posted: 11/6/2024 Viewed: 386 times
Selam,
After constructing your catchments, if you go to Catchment Delineation Mode, select one of the climate models you are interested in. Then, click on Data. Repeat this process for each climate model you want to use. The climate files for each model will show up in the ClimateData folder within your WEAP model directory under WEAP Areas.
Then, you can create a Key Assumption called "ClimateModel" (or whatever name you like). Create a scenario for each climate model you are using and set the Key Assumption to the name of that climate model preceded by a semicolon (for example, to use the CMIP6_Access-CM2_SSP126_Daily folder, you would set your Key Assumption to ;CMIP6_Access-CM2_SSP126.
Finally, under your climate expressions in your catchments, modify the expression so that the directory reads:
ReadFromFile"ClimateData\?Key\ClimateModel?\
followed by your file name. By using the ? symbol, WEAP will use the folder name set under Key\ClimateModel to know what file to use for the ReadFromFile.
This should help you. Please let me know if you get stuck and need further help.
Thanks,
Doug
Eng. Selam Sahlu
Subject: Re: Downloading CMIP6 Climate Models Using Automatic Catchment Delineation Mode for Climate Model Evaluation Posted: 11/7/2024 Viewed: 376 times
Dear Doug,
Thank you very much for your support. I would appreciate further elaboration on each step I should follow, as I am a bit confused about some aspects.
I created a Key Assumption named "climatemodel" and set up scenarios for each climate model using the ‘Manage Scenarios’ option. In the Key Assumptions section, I selected one of my scenarios in the "Data for" tab, and I entered ";ACCESS-CM2_SSP245" in the box with options like ‘Expression Builder’, ‘Monthly Time-Series Wizard’, etc.
Next, I navigated to the Climate tab within my catchment area. My catchment is divided into different elevation bands, and when I clicked on the elevation band from 500 m to 1000 m, the Climate tab displayed all land use types, each with the same climate file path.
At this point, I got confused about where to modify the expression so that the directory reads: ReadFromFile("ClimateData\?Key\ClimateModel?\"). Could you please also provide a complete example of the ReadFromFile path for the climate model ACCESS-CM2_SSP245? I’m unsure what file name should follow \ClimateModel?\ — should it be the climate model name (e.g., ACCESS-CM2_SSP245) or the specific file name (e.g., precipitation, temperature)?
Thank you again for your assistance.
Best regards,
Selam
Mr. Doug Chalmers
Subject: Re: Downloading CMIP6 Climate Models Using Automatic Catchment Delineation Mode for Climate Model Evaluation Posted: 11/7/2024 Viewed: 369 times
Selam,
I can clarify this for you. One example in my case for a precipitation expression-
Catchment delineation filled out the following expression automatically:
ReadFromFile("ClimateData\CMIP5_CanESM2_RCP85_Daily\Catchment ID 285 - LMN.csv", "Precip:Elevation 0 to 250 m")
So, I would modify it to the following:
ReadFromFile("ClimateData\?Key\ClimateModel?\Catchment ID 285 - LMN.csv", "Precip:Elevation 0 to 250 m")
Eng. Selam Sahlu
Subject: Re: Downloading CMIP6 Climate Models Using Automatic Catchment Delineation Mode for Climate Model Evaluation Posted: 11/10/2024 Viewed: 175 times
Dear Doug,
Thank you for your response and for providing possible solutions. I followed the example you showed me, but encountered an error stating, "Cannot find file C:\Users\documents\WEAP\MyModel\Clima...\Catchment ID 64 - Catchment.CSV." When I use the ReadFromFile Wizard manually for each scenario without the Key Assumption, it works fine. However, I'm unsure about potential complications later on, as I am using 10 different climate models.
I would really appreciate any further guidance you could offer. Thank you so much for your help!
Best regards,
Selam
Mr. Doug Chalmers
Subject: Re: Downloading CMIP6 Climate Models Using Automatic Catchment Delineation Mode for Climate Model Evaluation Posted: 11/11/2024 Viewed: 119 times
Selam,
Make sure your expressions are setup like the following example. Did you use a semicolon before your Key expression?
The Key\ClimateModel expression must be set to a semicolon, followed by the name of your folder under ClimateData:
;CMIP5_CanESM2_RCP85_Daily
Then, your ReadFromFile expressions must be in the same format as this example:
ReadFromFile("ClimateData\?Key\ClimateModel?\Catchment ID 285 - LMN.csv", "Precip:Elevation 0 to 250 m")
Eng. Selam Sahlu
Subject: Re: Downloading CMIP6 Climate Models Using Automatic Catchment Delineation Mode for Climate Model Evaluation Posted: 11/11/2024 Viewed: 112 times
Thank you so much, Doug! It works perfectly now
Topic "Downloading CMIP6 Climate Models Using Automatic Catchment Delineation Mode for Climate Model Evaluation"
