Janzing et al. (2026) How the River Network Shapes Spatiotemporal Drought Behavior Across Europe

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Geophysical Research Letters
• Year: 2026
• Date: 2026-11-01
• Authors: Joren Janzing, Niko Wanders, Steye L. Verhoeve, Manuela I. Brunner
• DOI: 10.1029/2026gl122313

Research Groups

Not specified in the abstract.

Short Summary

This study investigates the isolated effect of river networks on spatial streamflow drought connectivity across Europe using high-resolution hydrological model simulations, finding that river networks generally increase drought extent and that water bodies modulate this effect by decoupling runoff from discharge.

Objective

• To isolate and quantify the effect of river networks on spatial streamflow drought connectivity and drought extent by comparing unrouted runoff drought extents with routed discharge drought extents.

Study Configuration

• Spatial Scale: Continental (Europe) and river basin scale.
• Temporal Scale: Not explicitly specified, but implies analysis of drought characteristics and development over time.

Methodology and Data

• Models used: High-resolution hydrological model (specific model not named).
• Data sources: Hydrological model simulations (outputs: unrouted runoff, routed discharge).

Main Results

• The river network generally increases drought extent across most European basins.
• Runoff droughts in snowmelt-dominated upstream regions often lead to larger discharge droughts than the original runoff drought.
• Downstream discharge droughts are significantly affected by upstream runoff droughts.
• Water bodies influence the river network effect by storing water, thereby decoupling runoff from discharge.

Contributions

• Provides a novel isolation and quantification of the river network's effect on spatial drought extent, disentangling it from other complex hydro-meteorological processes.
• Enhances understanding of spatiotemporal drought development, offering valuable insights for water managers.

Funding

Not specified in the abstract.

Citation

@article{Janzing2026How,
  author = {Janzing, Joren and Wanders, Niko and Verhoeve, Steye L. and Brunner, Manuela I.},
  title = {How the River Network Shapes Spatiotemporal Drought Behavior Across Europe},
  journal = {Geophysical Research Letters},
  year = {2026},
  doi = {10.1029/2026gl122313},
  url = {https://doi.org/10.1029/2026gl122313}
}