Paper Harvest Report

Date range: September 29, 2026

5 top-tier papers selected out of 9 total publications

Today’s Highlights

BridgeSAR leverages Sentinel-1 SAR multipath signatures to estimate bridge-water clearance from space, reproducing tidal and seasonal water-level variations at sub-meter accuracy across five U.S. bridges (GRL). Rewetting of drained boreal peatlands significantly restores flood control capacity under both present and RCP4.5 warming climates, with InSAR detecting accelerated post-rewetting peat uplift (GRL). Remote sensing of river plumes along the California coast quantifies land-sea connectivity, while wave-buoy observations from Antarctica reveal that locally generated wind waves drive inside-outward sea-ice breakup that reshapes polynya dynamics for over a week (Nature Communications).

Table of Contents

  1. Today’s Highlights
  2. Top-Tier Journal Papers
    1. BridgeSAR: Measuring Bridge‐Water Clearance From Space Using SAR Multipath Signatures
    2. Water Storage Capacity Dynamics in Drained Boreal Peatlands: Responses to Rewetting and Climate Change
    3. Quantifying Land–Sea Connectivity Through Remotely Sensed River Plumes
    4. Dead Sea Warming and the Origin of Salt Giants
    5. Inside-outward breakup of sea ice by locally generated waves in the Vincennes Bay Polynya
  3. AI for Science
    1. How AI is changing research
  4. Statistics
    1. Papers by journal
  5. Filtering Criteria

Top-Tier Journal Papers

BridgeSAR: Measuring Bridge‐Water Clearance From Space Using SAR Multipath Signatures

Authors: Jinwoo Kim, Zhong Lu

Journal: Geophysical Research Letters · DOI: 10.1029/2026gl124805

Matched topics: seasonal

Bridge‐water clearance controls safe vessel passage and reflects local water‐level changes, but direct measurements are unavailable at many bridges. We present BridgeSAR, a geometry‐guided method that estimates clearance from multipath scattering stripes in synthetic aperture radar (SAR) amplitude images. BridgeSAR uses OpenStreetMap bridge geometry to guide extraction of single‐, double‐, and triple‐bounce stripes, accumulates SAR amplitude energy normal to the bridge axis, and converts stripe spacing to clearance using viewing geometry and a fixed structural‐depth term. We apply the method to Sentinel‐1 images from 2016 to 2025 over five U.S. bridges and compare the results with air‐gap sensors or water‐level‐derived reference clearances. The single‐to‐triple‐bounce separation provides the most stable observable, reproducing dominant tidal and seasonal clearance variations at most sites, with best root mean square errors of 0.39–0.61 m. BridgeSAR performance is influenced by viewing geometry, stripe signal‐to‐noise ratio, and wind‐driven roughening of the water surface.

Water Storage Capacity Dynamics in Drained Boreal Peatlands: Responses to Rewetting and Climate Change

Authors: Shokoufeh Salimi, Behshid Khodaei, Hjalmar Laudon

Journal: Geophysical Research Letters · DOI: 10.1029/2026gl124233

Matched topics: flood, climate change

Historical peatland drainage resulted in surface subsidence and reduced water storage capacity (WSC), a process that can be exacerbated by climate change. We assessed the effects of rewetting on WSC using mesocosm experiments in climate chambers, field measurements, and Interferometric Synthetic Aperture Radar (InSAR) analysis. Results showed that rewetting significantly increased WSC under both present and future RCP 4.5 climates, with stronger effects where Sphagnum moss recovery may restore surface porosity. Rewetting enhances WSC under shallow antecedent water levels and high precipitation, despite reduced vertical storage, due to living Sphagnum moss and porous near‐surface peat. Field validation confirmed increased WSC adjacent to the original ditches. In addition, InSAR analysis detected accelerated peat uplift post‐rewetting compared with pristine peatland conditions. These results demonstrate that rewetting effectively restores the flood control function of drained boreal peatlands, strengthens their resilience under climate change, and supports ecosystem recovery and climate adaptation strategies.

Quantifying Land–Sea Connectivity Through Remotely Sensed River Plumes

Authors: Kelly L. Hondula, Albert Ruhí, Gregory P. Asner, Rachel R. Carlson

Journal: Geophysical Research Letters · DOI: 10.1029/2026gl124455

Matched topics: river, seasonal, coastal, river plume

Coastal ecosystems are highly influenced by riverine freshwater inputs, but the nature of these influences is dynamic and hard to characterize. Here we present a method that leverages remote sensing data of river plumes to quantify land–sea connectivity. The method uses least‐cost routing across image‐derived cost surfaces, where connected paths have a directional water quality gradient characteristic of a fluvial plume. The central question this metric helps to answer is: What is the relative influence of different watersheds on a given point in the coastal zone? We demonstrate our approach with Sentinel‐3 OLCI satellite data to identify rivers originating large turbidity plumes along the California coast, then show that seasonal and inter‐annual connectivity patterns align with discharge time series. We anticipate applications of the proposed method will lead to improved understanding of linkages between the terrestrial and marine environment, which is needed to guide coastal management, conservation, and restoration.

Dead Sea Warming and the Origin of Salt Giants

Authors: E. Guillerm, T. K. Lowenstein, V. Gardien, F. Bärenbold, D. Bouffard, A. Brauer, F. Caupin

Journal: Geophysical Research Letters · DOI: 10.1029/2026gl124167

Matched topics: paleoclimate

Episodically in Earth’s history, marine basins became hydrologically restricted, forming “salt giants,” yet the mechanisms driving their formation remain debated. The modern Dead Sea, undergoing restriction from anthropogenic inflow diversion, shows rapid lake‐level decline and salt precipitation. We present a physical model coupling energy and mass fluxes in hypersaline waterbodies. The model reproduces the observed ~3°C Dead Sea water‐column warming since 1979. By 2100, the Dead Sea will drop ~85 m, and warm by ~5°C–~8°C depending on global CO₂ emissions. A fully restricted eastern Mediterranean under modern climate conditions would undergo 20°C warming and 2.5 km drawdown within a few millennia. Once isolated, large basins enter a positive feedback loop between warming and water loss that drives precipitation of halite and potash salts without requiring hot, arid climates. Because paleobrine warming tracks brine shrinkage, vertical paleotemperature trends in evaporites may record drawdown rather than paleoclimate.

Inside-outward breakup of sea ice by locally generated waves in the Vincennes Bay Polynya

Authors: Joey J. Voermans, Qingxiang Liu, Lang Cao, Josh Kousal, Petra Heil, Alexander D. Fraser, Clarence O. Collins et al.

Journal: Nature Communications · DOI: 10.1038/s41467-026-77979-y

Matched topics: coastal

Figure

Coastal polynyas are recurring regions of open water within sea ice that serve as sea-ice factories, producing vast amounts of new ice relative to nearby sea-ice-covered regions. Their formation and persistence are commonly attributed to strong offshore winds, while the influence of waves on polynya dynamics remains largely unexplored. Using rare wave-buoy observations from the Vincennes Bay Polynya, we show that strong winds generate energetic waves capable of breaking surrounding sea ice from the inside-outward, contrasting with outside-inward breakup caused by Southern Ocean swells. Satellite records from 2003–2022 reveal that extreme wave-induced breakup events coincide with substantial reductions in sea-ice concentration that persist for at least one week, accompanied by increased transitions to active frazil ice. These findings demonstrate that locally generated waves impact polynya dynamics and reshape surrounding sea-ice conditions. As Antarctic coastal polynyas evolve under a changing climate, wave activity may become increasingly important in shaping their sea-ice conditions and evolution.

AI for Science

How AI is changing research

  • Sharing AI progress in mathematics (OpenAI Blog, 2026-10-06) — OpenAI reports new results on open mathematical problems solved by a frontier model, including Lean proof formalizations released on GitHub. This is a milestone for AI-assisted formal reasoning: the same infrastructure for machine-checkable proofs is directly applicable to earth-science numerical methods and model verification, where provably-correct discretizations and solver logic have long been aspirational.

Statistics

Metric Count
Journals searched 11
Total papers fetched 80
Passed deterministic filter 9
After LLM relevance filtering 5
Rejected (not relevant) 4
AI for Science items picked 1

Papers by journal

Journal Papers
Geophysical Research Letters 4
Nature Communications 1

Filtering Criteria

Topics: hydrology, hydrologic model, river, runoff, streamflow, reservoir, water management, flood, drought, seasonal, land surface model, climate change, hydropower, surface water, irrigation, earth system model, estuary, coastal, freshwater discharge, river plume, ocean biogeochemistry, marine heatwave, paleohydrology, paleoclimate, Quaternary, Holocene, Pleistocene, fluvial geomorphology, river terrace, loess, drainage network, river capture, landscape evolution, luminescence dating

Fields: engineering, environmental science, computer science, geology, geography