WRM web version: Control nodes

A WRM scenario can include any number of control nodes.

Control nodes report the observed flow or any deviation of the observed flow at a given location against pre-specified target flow values.

Several types are available:

1. control,passive
2. control,MINtarget
3. control,MAXtarget
4. control,combined
5. control,calibration

Data sets

Dynamic Output Time Series:

1. throughflow;
2. shortfall MIN(0,observedflow - MINtarget);
3. excess MAX(0,observedflow - MAXtarget);
4. deviation (observedflow-reference_flow)
   In addition, summaries are calculated for shortfall and excess (average and total); for deviation the statistics reported are:
   • BIAS (difference of means)
   • RMSE (root mean square error)
   • correlation (co-variance)
   • frequencies (%) of daily violations (reliability, excess)

control,passive

• Input: none;
• Output: throughflowTS

control,MINtarget

• Input: MINtargetTS and multiplier, reliability threshold;
• Output: throughflow(TS), target(TS), shortfall(TS), reliability (% days where the target is met with a threshold of % volume) on a daily basis).

control,MAXtarget

• Input: MAXtargetTS, multiplier, exceedance threshold;
• Output: throughflow(TS), target(TS), excess(TS), exceedance%.

control,combined

• Input: both MINtargetTS and multiplier, MAXtargetTS and multiplier, thresholds;
• Output: throughflow(TS), both targets(TS), shortfall(TS), reliability; excess(TS), exceedance%.

control,calibration

• Input: reference_TS, multiplier (default: 1.0);
• Output: throughflow(TS), reference_TS, deviation(TS); BIAS (difference of means), RMSE (root mean square error), correlation (co-variance).