Scalability gaps in Earth Science

Representative open questions

Showing 30 of 37 — one per source paper, highest-quality first.

• The 2022 hydraulic stimulation at Utah FORGE: investigating fracturing mechanisms and testing forecasting approaches (2026) · doi

  The HM1D model's global inversion approach using differential evolutionary algorithm is limited by parameter space constraints to maintain computational speed for real-time application. Development of more efficient inversion strategies that can handle the large parameter set without sacrificing speed or robustness needs to be addressed for operational Adaptive Traffic Light Protocols (ATLP).

• Assessing the outdoor thermal comfort impact of nature-based urban interventions in dense informal settlement upgrading processes: the case of Barrio 20 in Buenos Aires (2026) · doi

  While the paper demonstrates UTCI-based microclimatic simulation effectiveness for two passageways in Barrio 20, it does not address how simulation-based NbS design approaches transfer to informal settlements with fundamentally different morphologies, building materials, or climatic zones beyond the Buenos Aires context of the Global South.

• Potential of micro glass/nano glass/fibreglass as pollutants species in environmental matrices (2026) · doi

  The hierarchical microscopy procedure (optical → SEM-EDS → TEM) for nano-glass particle characterization suffers from low analytical throughput and complexity in sample preparation for TEM analysis. Practical workflows balancing throughput, resolution, and expertise requirements for routine environmental monitoring of nano-glass in water, atmospheric aerosols, and biological samples require optimization.

• Future outlook of monthly maximum daily precipitation in Pakistan’s hydroclimatic zones: high-resolution insights from CMIP6 multimodel data (2026) · doi

  The study uses CMIP6 multimodel ensemble projections but does not quantify model agreement uncertainty or specify downscaling techniques (dynamical or statistical) needed to translate coarse-resolution GCM outputs to district or watershed levels where water governance and agricultural planning decisions are actually implemented in Pakistan.

• Riparian ecosystem condition and impaired floodplain assessment in the Congaree river watershed, South Carolina (2026) · doi

  The study assesses riparian conditions at the HUC10 watershed level as shown in Table 3 and Figure 8, but does not explicitly address how the RCA–FIS approach scales to finer spatial resolutions (HUC12, reach-scale) or coarser scales (HUC8) to support implementation at different management and regulatory decision-making levels across the Congaree River Watershed.

• Selective extraction of metals from polymetallic nodules of Central Indian Ocean Basin through chemical partitioning (2026) · doi

  The chemical partitioning procedure has been demonstrated on nodule samples from the Central Indian Ocean Basin, but its applicability to polymetallic nodules from other abyssal environments (e.g., Peru Basin, Clarion-Clipperton Zone) with different nodule textures, metal concentrations, and associated sediment types remains undemonstrated. Comparative testing across distinct oceanographic provinces is necessary before generalizing the method.

• Improving forecasts of persistent contrails through ice deposition adjustments (2026) · doi

  Even with relatively dense vertical grid spacing of 230 m in the upper atmosphere, GEM-P3 cannot reproduce very shallow layers of elevated relative humidity with respect to ice (RHi) that sustain contrail persistence. This suggests that current operational and high-resolution models struggle to capture fine-scale vertical structure of supersaturation layers below this resolution threshold.

• Decadal ocean observations in the Northwestern Mediterranean: insights from the MOOSE-GE cruises (2026) · doi

  Glider operations require significant manpower (2-3 months endurance) and can only collect information down to 1000m with limited variables (T, S, O2, Chla, CDOM, backscattering).

• Experimental characterization of urban-like scattering and attenuation from a dense nodal array: implications for seismic ground motion (2026) · doi

  The research demonstrates scattering at specific resonance frequencies (20 and 50 Hz) in forests, but extension of findings to broader frequency ranges and different types of urban scatterers needs development.

• Analysis of PM2.5 precursors by satellite products over Lazio region (2026) · doi

  The analysis is geographically limited to the Lazio region; extension to other regions with different meteorological and emission characteristics would be needed to validate the generalizability of seasonal coupling patterns between precursor gases and AOD.

• From Surface Water to Deep Groundwater: Field Evidence of Fate and Transport of Pharmaceuticals and Personal Care Products (PPCPs) in Urban Alluvial Systems of Delhi, India (2026) · doi

  The study demonstrates PPCP migration through soils and persistence in vadose and saturated zones in Delhi's urban alluvial systems, but broader application of findings to other geological settings and climate conditions is not addressed.

• Dryland soil rewetting induces strong VOC emissions with potential to form ozone and aerosol (2026) · doi

  The global significance of dryland VOC emissions remains unquantified at regional and global scales, requiring upscaling studies to assess implications for atmospheric chemistry.

• The EMODnet Portal: how to present a unified data discovery and download service of complex and diverse European marine data to the public (2026) · doi

  The paper does not address how to maintain consistency and accessibility of diverse European marine data across multiple servers (ERRDAP and GeoServer) as the Portal scales to include additional data sources.

• The response of Middle Jurassic depositional environments to climate change in the Wucaiwan mining area, Junggar Basin, China (2026) · doi

  The research focuses on the Wucaiwan mining area in the Junggar Basin; extending this analysis to other regions with similar Jurassic depositional systems would help validate the generalizability of the findings regarding wildfire-driven vegetation succession and carbon cycling.

• Efficient electrification in a warming climate could contribute to keeping energy burdens in check (2026) · doi

  The study considers only single-family homes; analysis ought to be repeated for multifamily housing, which differ in heating systems, building characteristics, and energy rates and house much of the low-income urban population.

• Assessment and prediction of dust emissions, deposition and radiation forcing in Central Asia (2026) · doi

  Ground-based observational sites, although representative geographically and by surface type, cannot fully characterize the complex radiative effects across Central Asia's extensive and heterogeneous landscapes.

• Toward healthy air quality under CMIP6 scenarios: insights into the compliance with the new WHO guidelines in China (2026) · doi

  Addressing limitations will require coupling of high-resolution regional chemistry-transport models with more accurate health-impact models, and further integration of local observational networks and epidemiological data.

• Understanding Soil Freeze-Thaw Dynamics and Slope Instability in Arctic Regions Under Climate Change (2026) · doi

  The applicability of the methodology to predict slope instability in regions beyond the studied Arctic zones (northern Canada, Alaska, Siberia, coastal Arctic) remains to be demonstrated.

• Future Ozone Exposure in Europe under Net-Zero Emission Scenario using Downscaled ICON-ART Simulations (2026) · doi

  While the study provides high-resolution ozone projections for assessing air quality implications of net-zero transitions, it does not discuss the applicability of the downscaling method to other regions outside Europe or under different emission scenarios beyond net-zero pathways.

• Tracing subsurface flow paths from hillslopes to streams using a multi-method approach (2026) · doi

  The study focuses on campaign-based measurements in specific riparian zones; scalability of the multi-method approach to different watershed types and climatic regions is not addressed.

• Influence of Atmospheric Aerosol Deposition and its Elemental Composition on Marine Productivity in the Central Arabian/Persian Gulf (2026) · doi

  Extension of this research to other marine regions with different aerosol compositions and oceanographic conditions would help generalize findings beyond the Arabian Gulf.

• Linking δ¹³CDIC and microbial respiration to calcium carbonate dissolution in a complex groundwater system: evidence from a large-scale field study (2026) · doi

  Future studies should extend this research across different hydrogeological settings and temporal scales to determine the generalizability of the biogeochemical controls identified in this complex groundwater system.

• Peat Collapse as a new threat to fen hydrological stability: the case of Nature reserve De Zegge (Belgium) (2026) · doi

  The mesocosm experiment measured greenhouse gas emissions and porewater chemistry as indicators of peat stability, but the generalizability of these laboratory-scale findings to field conditions across different fen ecosystems remains unclear.

• Exploratory relationships between selected ground motion parameters and coseismic landslides: A case study of the 2017 Jiuzhaigou MW6.5 earthquake (2026) · doi

  The scalability of the multi-parameter approach to regional or global applications with varying geological and seismic conditions remains unclear.

• Unraveling non-monotonic responses of the El Niño–Southern Oscillation to post-2100 global warming (2026) · doi

  The multi-model analysis uses only 11–12 models from CMIP5/CMIP6 with extended simulations to 2299–2300; robustness of the non-monotonic ENSO response pattern across broader ensemble architectures and alternative high-emission scenarios (e.g., SSP3-7.0, SSP2-4.5) has not been tested, limiting the generalizability of findings.

• Spatiotemporal Land-Use/Land-Cover Transition and Its Environmental Impact Assessment: A Case Study of Kakching District (2026) · doi

  The temporal scope is limited to 2019-2024; longer-term historical analysis and future projections of LCLUC trends would strengthen understanding of sustainability trajectories.

• MoorPower – Sustainable and innovative photovoltaic solutions for rewetted peatlands (2026) · doi

  Larger scale implementation studies beyond initial sites are needed to provide insights on broader spatial scales regarding PV systems on peatland soils.

• Learning-assisted InSAR DEM Enhancement for High-Resolution, Terrain-Aware Hydrologic Digital Twins (2026) · doi

  While the workflow is designed for scalability across different SAR sensor configurations, actual implementation and testing across diverse sensor types remains to be demonstrated.

• Real-time field measurements of HO2 uptake coefficients onto ambient aerosols using laser flash photolysis coupled with laser induced fluorescence detection (2026) · doi

  The fieldwork was conducted at a single location (Manchester Air Quality Supersite, UK) in August 2025, limiting the generalizability of findings across different geographic regions, seasons, and atmospheric conditions.

• EMODnet and EDITO: The current status of EMODnet data products in EDITO and the plans for future EMODnet on EDITO with the aim of reaching fully operational marine data science service by 203 (2026) · doi

  The scalability of the EDITO infrastructure to support the full integration and operational status of EMODnet data products at the scale needed for a comprehensive marine data science service remains to be demonstrated.