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.
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Sofia Reyes, Henrik Vasquez (2025). Hydrological Connectivity Controls Nitrate Export in an Agricultural Headwater Catchment. TerraNova preprint.
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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…
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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…
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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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