Posted September 16, 2025 · Submitted by Sofia Reyes, Universidad de Chile
Nutrient export from agricultural catchments varies sharply with hydrological state, complicating efforts to manage downstream water quality. Using high-frequency in-stream chemistry, we demonstrate that nitrate export is governed by the activation of subsurface flow paths during wet periods. A parsimonious hydrological connectivity index accounts for the majority of variance in nitrate load, offering a practical and transferable basis for targeting mitigation measures.
Sofia Reyes, Henrik Vasquez (2025). Hydrological Connectivity Controls Nitrate Export in an Agricultural Headwater Catchment. TerraNova preprint.
Amara Okeke, Priya Nair
Excessive groundwater extraction drives land subsidence that compounds relative sea-level rise across low-lying, rapidly urbanising deltas. Combining satellite geodesy with piezometric records, we map subsidence rates and attribute them to…
Read preprint →Sofia Reyes, Mei Tanaka
The Southern Ocean sustains some of the most extensive and least understood cloud cover on Earth, and persistent model biases in this region limit confidence in climate projections. Using in-situ measurements from a research cruise, we char…
Read preprint →Sofia Reyes, Henrik Vasquez, Mei Tanaka
Tropical Andean glaciers are among the most climatically sensitive ice masses on Earth, yet observational constraints on their recent evolution remain limited. We integrate two decades of optical and synthetic-aperture radar observations to…
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