I am using the invest model for the first time, so I want to ask some questions about data.
“depth of rainfall (mm)”-- Is this the largest daily precipitation in a year? Or the total precipitation during the typhoon? Or can you determine the data according to your research purpose?
As the user’s guide appendix states, it is the “Depth of rainfall event of interest (mm). To calculate the design storm, users can look up intensity-frequency-duration (IFD) tables available for their city” Here is an article that explains the concept of a design storm. So yes, you can choose the depth of rainfall according to your goals. It could be the average precipitation, or the largest in a year, or the largest ever, etc.
Thank you very much for your answers