runoff and water availability

[mgaacGitHub]

Hello
1.- I understand that Xanthos runoff output (i.e., file q_km3peryear_pm_abcd_mrtm_watch_2010-2100.csv) is the total runoff as the sum of direct runoff and baseflow, is this true ??

2.- I'am using abcd module to calculate runoff in Xanthos. In future run, is neccessary to consider the initial channel storage and soil moisture data taken from the ending values of historical run for the abcd model ??

3.- Total runoff in Xanthos already includes or considers the subtraction of infiltration and evapotranspiration ?

4.- I would like to calculate the water availability in each grid cell by subtracting human consumption and agricultural use from the total runoff . Would it be correct to calculate availability in that way? or this is calculated in the section "AccessibleWater" (i.e. file accessible_water_km3peryr_pm_abcd_mrtm_watch_2010-2100.csv, although this is to basin level)

Best regards
Miguel altamirano

[mengqi-z]

Hello Miguel,

1. That's correct
2. Steady-state soil moisture and groundwater storage are necessary for model initialization. Xanthos offers a "spin-up" period option to generate these initial values. Alternatively, you can run the model continuously from the historical period into the future, so that soil moisture and groundwater storage transit smoothly between the two periods.
3. Yes
4. It depends on whether you need "natural" or "net" water availability. Accessible water from Xanthos refers to the water that is potentially accessible by human without accounting for human activities (e.g., withdrawals).

[mgaacGitHub]

Thanks a lot for your answer.I would like to calculate net water availability by grid cell. If therunoff of Xanthos includes evapotranspiration then that of the crops is alreadyconsidered, isn't it ? Or, would it be advisable to consider the consumption for irrigated cropsin the balance of net water availability since it would be the one extractedfrom the runoff, while rainfed agriculture consumption would already beindirectly considered in the evapotranspiration of Xanthos, or do you recommendsomething different? Best regards El jueves, 3 de octubre de 2024, 10:14:59 a.m. CST, Mengqi Zhao ***@***.***> escribió: Hello Miguel, - That's correct - Steady-state soil moisture and groundwater storage are necessary for model initialization. Xanthos offers a "spin-up" period option to generate these initial values. Alternatively, you can run the model continuously from the historical period into the future, so that soil moisture and groundwater storage transit smoothly between the two periods. - Yes - It depends on whether you need "natural" or "net" water availability. Accessible water from Xanthos refers to the water that is potentially accessible by human without accounting for human activities (e.g., withdrawals). — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>