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Open research questions in Ocean Waves and Remote Sensing

139 gap statements mined from Ocean Waves and Remote Sensing papers in our 4.5M-paper local library, which holds 1,062 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • There is a need for more detailed analysis of the wave climate in the Bay of Bengal. Prior work has not fully addressed the characteristics of wind seas and swells in the wave climate off Chennai.

    Wind sea and swell characteristics in the wave climate off Chennai · 2026 · DOI

  • The need to extrapolate beyond the upper tail of the data. The challenge of characterizing the multivariate dependence structure of wind, wave, and current variables.

    A framework for 3D direct sampling-based environmental contours of wind, wave, and current using ABKP model and R-vine copula · 2026 · DOI

  • Prior methods for joint probabilistic modeling of wind-wave parameters do not accurately capture the dependence structure between variables. The need for a physically constrained approach that incorporates the relationships between wind and wave parameters.

    Embedding physical constraints into C-vine copulas for joint probabilistic modeling of wind-wave parameters · 2026 · DOI

  • The study identifies the need to understand long-term trends and future changes in the climate of wind, waves, and water levels for coastal management and infrastructure planning. The study notes that previous studies have increasingly addressed uncertainties in projections by incorporating multiple greenhouse gas emission scenarios and using ensembles of global climate models and regional climate models.

    An ensemble of regional CMIP3/CMIP5 wind wave scenarios for the North Sea and the Baltic Sea: a revisit · 2026 · DOI

  • Improved modelling by integrating dynamic wave field specific parameters and high-resolution numerical models to enhance rogue wave risk assessments on a global scale is needed. Further research on the importance of additional spectral parameters in improving rogue wave prediction and classification is required.

    Rogue wave indicators from global models and buoy data · 2026 · DOI

  • The need to acquire suitable reference observations for model fitting. The challenge of applying the float-acoustic-wind relationship in high-wind regimes.

    Passive acoustic monitoring from profiling floats as a pathway to scalable autonomous observations of global surface wind · 2026 · DOI

  • The lack of quantitative assessment of SoP sensing for capturing surface gravity wave variability. The need for a better understanding of the physical aspects related to SoP measurements. The limitations of SoP sensing for sea state monitoring, including interpretation capacity and sensitivity.

    Monitoring surface gravity wave variability with State of Polarization sensing on a subsea telecommunication cable · 2026 · DOI

  • The lack of a classical tandem phase due to orbital constraints. The need for a new approach to ensure continuity in SLA measurements between S3 and S3NG-T. The introduction of a 4-hour delay as an additional source of uncertainty in offset estimation.

    Evaluate the impact of a 4 h tandem phase on the continuity of nadir altimetry measurements between S3 and S3NG-T · 2026 · DOI

  • The lack of understanding of the sources of uncertainties in altimetry sea level computation when approaching the coast. The need for a comprehensive analysis of the uncertainties associated with each component of the altimetry sea level computation procedure.

    Understanding uncertainties in the satellite altimeter measurement of coastal sea level: insights from a round-robin analysis · 2025 · DOI

  • There is a lack of small-scale mechanistic understanding of the fluxes, especially under abrupt meteorological changes. Observational challenges during stormy conditions in the open sea have limited our understanding of these fluxes.

    Atmospheric cold pools abruptly reverse thermohaline features in the ocean skin layer · 2025 · DOI

  • The relationship between bubble penetration depth and air-sea transfer velocity of CO2 is not well understood. The effect of wind and wave conditions on the short-term response of entrained bubbles is not well studied.

    On the short-term response of entrained air bubbles in the upper ocean: a case study in the north Adriatic Sea · 2024 · DOI

  • Further research is needed to understand the impacts of climate change on wave climate in other regions. Studies should consider a wider range of emission scenarios to capture the full range of possible future changes. Research should focus on improving the accuracy of wave climate models and reducing uncertainties in projections.

    An ensemble of regional CMIP3/CMIP5 wind wave scenarios for the North Sea and the Baltic Sea: a revisit · 2026 · DOI

  • The predictability of rogue waves remains poorly understood. Models systematically underestimate extreme wave events due to spectral smoothing and spatial averaging. There is a need for improved modelling by integrating dynamic wave field specific parameters and high-resolution numerical models.

    Rogue wave indicators from global models and buoy data · 2026 · DOI

  • Further work into improving the wind forcing in the most narrow fjords is needed to increase the accuracy of wave simulations in such areas.

    An unstructured wave model on a mountainous coast: Wave propagation, coastal sheltering and wave growth in narrow fetch · 2026 · DOI

  • Yet, several applications are hindered by the limited knowledge of the transfer function between geophysical variables and DAS measurements.

    Reconstruction of Nearshore Surface Gravity Wave Heights From Distributed Acoustic Sensing Data · 2024 · DOI

  • The study had a small sample size, with only three events analyzed. The study was limited to a specific region, with two events occurring in the harbour of Bremerhaven and one event in the North Sea. The study did not account for other factors that may influence temperature and salinity anomalies, such as ocean currents and biological activity.

    Atmospheric cold pools abruptly reverse thermohaline features in the ocean skin layer · 2025 · DOI

  • Based on our wave-phase-resolved simulations, we demonstrate that the parameterization of sea surface roughness is significantly influenced by the direction of wave propagation relative to the wind, a factor that the commonly used Charnock relation does not account for.

    A Large-Eddy Simulation Study in WRF on Wind over Broadband Waves of Different Directions and Spreading Widths · 2025 · DOI

  • Further evaluation of the performance of the ABKP model and R-vine copula in fitting observed data - Investigation of the application of the proposed framework to other marine environmental…

    A framework for 3D direct sampling-based environmental contours of wind, wave, and current using ABKP model and R-vine copula · 2026 · DOI

  • Early numerical studies neglected bottom friction and did not account for the interactions among wind, waves, and ocean currents, - Recent research has shifted toward integrated current-wave coupled modeling, but the fusion of wind fields from different sources is still…

    Spatiotemporal responses of water level and wave height under multi-source wind-field forcing: a case study of Typhoon In-fa · 2026 · DOI

  • High-wind regimes remain systematically biased—especially above 10 m s-1, - The study used a limited subset of DYFAMED wind data, - Acquiring suitable reference observations can be challenging, - The study was conducted in a specific region…

    Passive acoustic monitoring from profiling floats as a pathway to scalable autonomous observations of global surface wind · 2026 · DOI

  • The model validation is tentative and requires future enhanced observations, - The parameters ρ, α wt are chosen as constants in this study, - The study exhibits some deficiencies and needs to be addressed on comparative assessments and metrics to previous…

    Analytical approaches for wave energy dissipation induced by wave-generated turbulence and random wave-breaking · 2026 · DOI

  • Evaluations for more complex situations will be addressed in the future series of papers, - Comparative assessments and metrics to previous formulations need to be addressed, - Evaluations of scaling behavior of the new model need to be…

    Analytical approaches for wave energy dissipation induced by wave-generated turbulence and random wave-breaking · 2026 · DOI

  • Further study of the nonlinear response of birefringence and incoherent accumulation of SoP changes on fibres, - Investigation of the time-dependent variations in the SoP response, - Analysis of the complexities in the swell energy coupling into SoP…

    Monitoring surface gravity wave variability with State of Polarization sensing on a subsea telecommunication cable · 2026 · DOI

  • In situ observations of hydrodynamics in high-energy macrotidal environments are costly and challenging, - High-frequency (HF) radars could provide synoptic information about ocean currents, but their coverage is patchy and limited to a few coastal regions in some industrialized countries, - The study was conducted in a specific location, the Iroise Sea, which may not be representative of all coastal…

    A new airborne system for simultaneous high-resolution ocean vector current and wind mapping: first demonstration of the SeaSTAR mission concept in the macrotidal Iroise Sea · 2024 · DOI

  • Further research is needed to fully exploit the capabilities of the OSCAR instrument, - The development of numerical models that can accurately represent fine-scale dynamics is necessary, - The use of HF radars and other remote sensing technologies should be explored to provide synoptic information about ocean…

    A new airborne system for simultaneous high-resolution ocean vector current and wind mapping: first demonstration of the SeaSTAR mission concept in the macrotidal Iroise Sea · 2024 · DOI

Most-cited papers in Ocean Waves and Remote Sensing

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Open questions raised by papers listed on this page include: (1) There is a need for more detailed analysis of the wave climate in the Bay of Bengal (“Wind sea and swell characteristics in the wave climate off Chennai”, 2026); (2) Improved modelling by integrating dynamic wave field specific parameters and high-resolution numerical models to enhance rogue wave risk assessments on a global scale is needed (“Rogue wave indicators from global models and buoy data”, 2026); (3) The lack of quantitative assessment of SoP sensing for capturing surface gravity wave variability (“Monitoring surface gravity wave variability with State of Polarization sensing…”, 2026); (4) The lack of a classical tandem phase due to orbital constraints (“Evaluate the impact of a 4 h tandem phase on the continuity of nadir altimetry…”, 2026); (5) Further research is needed to understand the impacts of climate change on wave climate in other regions (“An ensemble of regional CMIP3/CMIP5 wind wave scenarios for the North Sea and…”, 2026). 139 gap statements have been mined from Ocean Waves and Remote Sensing papers in our 4.5M-paper local library, which holds 1,062 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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