Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.5194/essd-18-691-2026 |
Licence  |
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| Title (Primary) | QUADICA v2: extending the large-sample data set for water QUAlity, DIscharge and Catchment Attributes in Germany |
| Author | Ebeling, P.; Hubig, A.; Wachholz, A.; Scharfenberger, U.; Haug, S.; Nguyen, V.T.
; Sarrazin, F.; Batool, M.
; Musolff, A.; Kumar, R.
|
| Source Titel | Earth System Science Data |
| Year | 2026 |
| Department | CHS; HDG |
| Volume | 18 |
| Issue | 1 |
| Page From | 691 |
| Page To | 712 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Data and Software links | https://doi.org/10.4211/hs.c2866cd416b94ca386deb5758834311f |
| Abstract | The QUADICA
version 2 dataset significantly expands upon the first version of
QUADICA (water QUAlity, DIscharge and Catchment Attributes for
large-sample studies in Germany), by incorporating more recent data,
additional water quality and driver variables, and more stations with
concurrent water quantity data. Specifically, QUADICA v2 extends the
water quality time series of the first version up to 2020 and introduces
new variables, including water temperature, oxygen, and chlorophyll a
concentrations, as well as concentrations of ammonium, sulfate, and
geogenic solutes like calcium. These additions enable a more
comprehensive understanding of ecological impacts, including
eutrophication effects, and water quality dynamics across catchments.
Furthermore, the number of stations with both water quality and quantity
data has effectively doubled – now covering 637 out of the total 1386
stations – by integrating QUADICA with the CAMELS-DE and Caravan-DE
datasets. The inclusion of time series on point and diffuse sources of
both nitrogen and phosphorus allows for more thorough investigations of
driver-response relationships and nutrient export from catchments. To
facilitate visualization and exploration of QUADICA, we provide a
user-friendly, interactive R application alongside the online data
repository, as well as a browser-based web app for inspecting the
dataset. This makes QUADICA v2 a comprehensive dataset that spans from
driver to impact variables, offering a valuable resource for researchers
and practitioners. |
| Ebeling, P., Hubig, A., Wachholz, A., Scharfenberger, U., Haug, S., Nguyen, V.T., Sarrazin, F., Batool, M., Musolff, A., Kumar, R. (2026): QUADICA v2: extending the large-sample data set for water QUAlity, DIscharge and Catchment Attributes in Germany Earth Syst. Sci. Data 18 (1), 691 - 712 10.5194/essd-18-691-2026 |
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