a validation and data repository for buhayra
Have a look at the data by typing e.g. plot(wm["ingestion_time"])
or plot(reservoirs["capacity"])
.
In order to obtain the current or past measured reservoir level use getVols(id,date,N)
where id
should be an integer corresponding to the desired reservoir, date
might be a string or POSIXct and N is the number of records we wish to obtain since date
.
The next figure shows the accuracy of the watermask area for 54 reservoirs during 11 acquisition dates and a total of 163 data points. Underestimations by buhayra can be explained by macrophyte extent in many water bodies. Note the improved accuracy can be pbserved for reservoir area < 150 ha.
To compare the time-series of individual reservoirs it is possible to check http://www.hidro.ce.gov.br/ like in the following figure. Field measurements will be integrated into the web-visualization.
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