Hydrological Processes最新文献

{"title":"Contrasts in Ecohydrological Partitioning of Heterogeneous Urban Green Spaces in Energy-Limited Versus Water-Limited Hydroclimates","authors":"Jamie Lee Stevenson,&nbsp;Doerthe Tetzlaff,&nbsp;Christian Birkel,&nbsp;Chris Soulsby","doi":"10.1002/hyp.70077","DOIUrl":"https://doi.org/10.1002/hyp.70077","url":null,"abstract":"<p>Urban green spaces (UGS) provide essential ecosystem services (ES), for example, precipitation infiltration for flood mitigation, transpiration (Tr) for local atmosphere cooling and groundwater recharge (Gr) for drinking water provision. However, vegetation type impacts the ecohydrological partitioning of incoming precipitation and therefore ES provision, whilst flux rate potential is different in disparate hydroclimates. Consequently, paired studies in different hydroclimates are useful to understand similarities and differences in vegetation controlled ecohydrological partitioning to effectively guide UGS management. We simultaneously undertook sub-daily soil moisture measurements beneath three contrasting urban vegetation types (grass, shrub, mature tree) between 01/01/2021 and 31/12/2023 for an inter-comparison of an energy-limited Scottish and a moisture-limited region of Germany. These data were integrated with hydroclimatic and sapflux data in the EcoHydroPlot model to constrain estimates of ecohydrological fluxes. Soil moisture data showed clear effects of the contrasting hydroclimates, with high and low VWC values in Scotland and Germany, respectively, whilst evapotranspiration potential was ~50% greater in Germany. Consequently, ecohydrological functioning and flux rates were fundamentally different, with Tr dominant in Germany and Gr dominant in Scotland. However, vegetation cover was shown in both countries to be a key control on urban ecohydrological partitioning with grass encouraging Gr, contrasting to evergreen shrubs in Scotland and mature trees in Germany elevating Tr. In Germany, impacts to hydrological functioning due to low soil VWC were marked with the mature trees high Tr rate shutting down Gr for the majority of the study period. The German site also showed greater hydrological functioning susceptibility to inter-annual hydroclimatic variability with all fluxes heavily suppressed during the 2022 drought. In contrast, the high VWC in Scotland provided some buffer against ongoing negative rainfall anomalies. Overall, the study indicated the importance of diverse UGS vegetation cover to encourage contrasting ecohydrological fluxes.</p>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/hyp.70077","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drought Dynamics and Vulnerability—Preface","authors":"Michael Nones,&nbsp;Martijn J. Booij,&nbsp;Emilia Karamuz,&nbsp;Wen Wang","doi":"10.1002/hyp.70071","DOIUrl":"https://doi.org/10.1002/hyp.70071","url":null,"abstract":"","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelled Water Temperature Patterns and Energy Balance of a Threatened Coastal Lagoon Ecosystem","authors":"Aida Zeighami,&nbsp;Barret L. Kurylyk","doi":"10.1002/hyp.70068","DOIUrl":"https://doi.org/10.1002/hyp.70068","url":null,"abstract":"<p>Coastal water temperatures control physical, chemical, and biological processes and are expected to rise due to future changes in freshwater temperature and flow rates, heat exchange with the warming atmosphere, and thermal interactions with a changing ocean. However, the thermal sensitivity of transitional, coastal water bodies to climate change remains poorly understood, due partly to a lack of knowledge on present-day thermal controls in these settings. Accordingly, we applied a coastal hydrodynamic model (MIKE 3 FM), with a coupled thermal module to simulate hydrodynamics and water temperature variability in the Basin Head lagoon, a federally protected coastal ecosystem in the Canadian province of Prince Edward Island. Field data from the lagoon were used to calibrate and assess the numerical model, while atmospheric, oceanic, and hydrologic data were used to form the thermal and hydrodynamic boundary conditions. The model successfully reproduced tidal water level oscillations as well as diurnal and semi-diurnal (tidal) temperature fluctuations. Model results show longitudinal, cross-shore, and vertical thermal variability within the lagoon, including pronounced thermal variability near the bed and near the inlet due to tidal pumping. Model results and field data highlight the thermal sensitivity of the lagoon during heat waves; however, distinct cold-water plumes at freshwater inputs (springs and groundwater-dominated streams) persisted, with temporally averaged temperatures in these zones up to 18 °C colder than the ambient lagoon. Although, these freshwater inflows can dominate local energy budgets, the surface heat fluxes, especially shortwave radiation, exert the dominant control on the lagoon-wide energy budget. Collectively, the model findings emphasise the interacting effects of atmospheric, hydrologic, and oceanic forcing on the spatiotemporal patterns of water temperatures in this threatened coastal ecosystem.</p>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/hyp.70068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Novel Framework for Estimating the Bowen Ratio Over Small Water Bodies","authors":"Amir Rezazadeh,&nbsp;Pooria Akbarzadeh,&nbsp;Mohammad Mohsen ShahMardan,&nbsp;Milad Aminzadeh","doi":"10.1002/hyp.70055","DOIUrl":"https://doi.org/10.1002/hyp.70055","url":null,"abstract":"<p>The Bowen ratio, defined as the ratio of sensible to latent heat flux, is crucial for quantifying land-atmosphere energy exchanges and evaporation rates from terrestrial surfaces. Despite extensive research on the Bowen ratio over placid water surfaces (e.g., lakes), further investigation is needed to understand its dynamics in small reservoirs subjected to water inflow/outflow (i.e., surface flows) and wind. To address this knowledge gap, the evaporation rate and the sensible heat exchanges are measured between the water surface and overlying air in a small laboratory basin under different water surface flow rates (1.0–10.5 l min⁻¹) and wind speeds (0–2.0 m s⁻¹). Three different wind flow conditions are explored: no wind, headwind (opposing the water surface flow), and tailwind (aligning with water surface flow). The findings indicate strong correlations between sensible heat flux, water surface flow rate, and wind speed, particularly under headwind conditions. Nevertheless, concerning the latent heat flux, the measurements demonstrate that for each wind condition, the evaporation reaches its minimum value in a certain water surface flow rate, resulting in the highest value of the Bowen ratio. To facilitate the application of these laboratory findings for estimating the Bowen ratio under real environmental conditions, mathematical relationships using dimensionless numbers obtained through non-linear regression analysis are established. The results exhibit a good agreement with measurements in a small water basin.</p>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/hyp.70055","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Earth-Air Movement on Water Transport in the Rock Surrounding Cave B113 in the Mogao Grottoes","authors":"Shunren Wang,&nbsp;Hongshou Li,&nbsp;Fei Li,&nbsp;Yipu Gong,&nbsp;Xiaowei Wang","doi":"10.1002/hyp.70073","DOIUrl":"https://doi.org/10.1002/hyp.70073","url":null,"abstract":"<div>\u0000 \u0000 <p>The degradation of wall paintings in the Mogao Grottoes, China, is primarily caused by the migration of water and salt in the surrounding rock (SR), with water being the key influencing factor. However, it remains unclear whether the movement of earth-air, driven by the air pressure difference (APD) between the air inside the SR and the external atmospheric pressure (AP), affects water transport in the rock. This study focuses on Cave B113 to investigate the effect of earth-air movement on water transport in the cave's SR. Under closed conditions, the APD was monitored at depths of 10, 20, and 30 cm within the SR. The results indicate that when the AP changes, the APD fluctuates in the opposite direction and increases with depth in the SR. The Pearson correlation coefficients between the AP and APD at depths of 20 and 30 cm are −0.31 and −0.32, respectively. The APD reflects the influence of AP on the SR and serves as a driving force that directly governs the movement of earth-air. The concentration of the water vapour in the SR layers is affected by temperature, while the relative and absolute humidities of these layers are influenced by the ascending and descending movement of earth-air. The magnitude of the AP fluctuation determines the volume of water that migrates inside the SR. Collectively, these factors determine the amount of evaporation that occurs and the characteristics of the moisture present in the rock surrounding the cave. This study elucidates the pivotal factors contributing to the deterioration of the wall paintings in the cave, providing a scientific basis for developing new ways of protecting these wall paintings. It has extensive reference value for water transport and evaporation in the vadose zone.</p>\u0000 </div>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal and Inter-Annual Dynamics in Water Quality and Stream Metabolism in a Beaver-Impacted Drought-Sensitive Lowland Catchment","authors":"Famin Wang,&nbsp;Doerthe Tetzlaff,&nbsp;Christian Birkel,&nbsp;Jonas Freymueller,&nbsp;Songjun Wu,&nbsp;Sylvia Jordan,&nbsp;Chris Soulsby","doi":"10.1002/hyp.70075","DOIUrl":"https://doi.org/10.1002/hyp.70075","url":null,"abstract":"<p>Increasing drought frequency and severity from climate change are causing streamflow to become increasingly intermittent in many areas. This has implications for the spatio-temporal characteristics of water quality regimes which need to be understood in terms of risks to the provision of clean water for public supplies and instream habitats. Recent advances in sensor technology allow reliable and accurate high-resolution monitoring of a growing number of water quality parameters. Here, we continuously monitored a suite of water quality parameters over 3 years in an intermittent stream network in the eutrophic, lowland Demnitzer Millcreek catchment, Germany. We focused on the effects of wetland systems impacted by beaver dams on the diurnal, seasonal and inter-annual variation in water quality dynamics at two sites, upstream and downstream of these wetlands. We then used the data to model stream metabolism. Dissolved oxygen and pH were higher upstream of the wetlands, while conductivity, turbidity, chlorophyll <i>a</i> and phosphorous concentrations were higher downstream. We found clear diurnal cycling of dissolved oxygen and pH at both sites. These dynamics were correlated with seasonal hydroclimatic changes and stream metabolism, becoming increasingly pronounced as temperatures increased and flows decreased in spring and summer. Upstream of the wetlands this corresponded to the stream rapidly becoming increasingly heterotrophic as modelled Gross Primary Production (GPP) was exceeded by Ecosystem Respiration (ER). Downstream, where GPP was lower, the stream was usually strongly heterotrophic and prone to increasingly hypoxic conditions (i.e., insufficient oxygen) before streamflow ceased in summer. This coincided with lower velocities and deeper channels in beaver impacted areas. Seasonal and inter-annual variations in water quality were found to mainly correlate with hydroclimatic factors (particularly temperature) and their influence on streamflow. This study highlights that heterotrophy and hypoxia in lowland rivers in central Europe is an important seasonal feature of intermittent streams where agricultural landscapes continue leaching nutrients. These insights contribute to an evidence base for understanding how climate change will affect the quantity and quality of rural water resources in intermittent lowland streams with wetlands where the presence of beavers requires management responses.</p>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/hyp.70075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Importance of a Glacier Complex for Downstream Runoff in the Semiarid Chilean Andes During Dry Years","authors":"Eduardo Yáñez San Francisco,&nbsp;Shelley MacDonell,&nbsp;Gino Casassa","doi":"10.1002/hyp.70064","DOIUrl":"https://doi.org/10.1002/hyp.70064","url":null,"abstract":"<p>High mountain catchment systems are inherently complex and include multiple processes that influence runoff generation, making it challenging to assess their current state and project their future solely based on observed data. However, combining observations with hydrological models that can simulate glacio-hydrological processes robustly offers a solution to this issue. This study focused on analysing and characterising the snow, glacier and runoff processes of the Tapado Glacier sub-catchment, an upstream source of the La Laguna reservoir in the semiarid Chilean Andes (30° S) for 2019–2021. For this purpose, a semi-distributed physical model (Cold Regions Hydrological Model [CRHM]) was used to simulate glacio-hydrological processes. The results indicate that sublimation accounted for 66%–89% of snow ablation, limiting the amount of snow available for melting in summer, and making melt from Tapado Glacier the primary component of mid-summer (January) discharge (28%–55%). This was reflected in significant mass loss from the Tapado Glacier ablation zone (−0.5 to −2.1 m w.e.). Sensitivity analyses indicated that precipitation and snow roughness generated the greatest variability in simulations related to snow mass balance process. Uncertainty due to errors in precipitation measurement and extrapolation is inherent in hydrological modelling in most mountain settings, whilst the uncertainty related to snow roughness (evaluated range: 0.0001–0.1 m) is largely due to its direct influence on snow sublimation rates and the challenges associated with measuring this variable. For the glaciated areas, results were sensitive to the selection of ice albedo. Whilst the Tapado sub-catchment includes only 1% of the catchment feeding the La Laguna reservoir (c.a. 27 km downstream), it equates to 6%–26% of monthly inflow into the reservoir over the study period. This indicates the importance of glaciated regions for supporting baseflow during relatively dry periods.</p>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/hyp.70064","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating UAV and Multisource Satellite Remote Sensing to Estimate Long-Term River Discharge in High-Mountain Basins","authors":"Pengfei Gu,&nbsp;Aimin Liao,&nbsp;Yongxiang Wu,&nbsp;Yi Xu,&nbsp;Wei Wu,&nbsp;Gaoxu Wang,&nbsp;Hongwei Liu,&nbsp;Pengcheng Hu,&nbsp;Xuan Zhang","doi":"10.1002/hyp.70062","DOIUrl":"https://doi.org/10.1002/hyp.70062","url":null,"abstract":"<div>\u0000 \u0000 <p>In high-mountain basins with complex underlying surface, harsh climate and difficult transportation, the conventional monitoring methods are less applicable, and it is also difficult to construct, operate and maintain ground observation stations. This has led to an extreme lack of ground hydrological data, which has restricted the understanding of hydrological processes in alpine basins. This study presents an integrated method for estimating long time-series discharge using unmanned aerial vehicles (UAVs) and satellite remote sensing (Satellite-RS). The method can integrate the refined observation capabilities of UAVs with the long time-series observation capabilities of Satellite-RS, and the discharge is estimated entirely by UAVs and Satellite-RS information without relying on ground-based measured discharge data. To test this method, six reaches within the main stream and tributaries of the Yarlung Zangbo River (YZR) were selected. The results indicate that the mean relative error (MRE) of UAV-measured river discharge is consistently below 20%, however, larger errors occur for rivers with low water levels and narrow river widths. To address the limitations of the UAV-based measurement method in capturing discharge variations over time, a discharge estimation formula was devised using the remotely sensed river width as an input variable. At-a-section river widths were derived from high-resolution satellite images (i.e., Landsat-8, Sentinel-1, Sentinel-2 and GF-2). By integrating the highly precise observations obtained from UAVs with the long time-series river widths obtained from multisource Satellite-RS, long time-series discharge data were estimated at several typical cross-sections along the YZR. The Nash-Sutcliffe efficiency values for the discharge estimates ranged from 0.72 to 0.92 during the study period (2014–2020). The results can provide data in support of the study of the YZR discharge composition analysis and other scientific issues, and also offer a theoretical and methodological basis for discharge observations in other high-mountain basins around the world.</p>\u0000 </div>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating and Modelling Soil Detachment Capacity in Rills After Treatment With Biochar From Solid Waste of Olive Oil Mills","authors":"Misagh Parhizkar,&nbsp;Manuel Esteban Lucas-Borja,&nbsp;Demetrio Antonio Zema","doi":"10.1002/hyp.70067","DOIUrl":"https://doi.org/10.1002/hyp.70067","url":null,"abstract":"<div>\u0000 \u0000 <p>Although being a viable substrate to reduce soil erosion, the effects of biochar from solid waste of olive oil mills (OMSW biochar) on soil detachment capacity in rills (<i>D</i>_c) has never been explored. Furthermore, no equations have been proposed to predict important parameters (soil erodibility factor, <i>K</i>_r, shear stress, <i>τ</i>, and its critical value, <i>τ</i>_c, for rills) of this hydrological process in treated soils. This study was conducted in agro-forest sites of Northern Iran to evaluate <i>D</i>_c and key properties of soils–organic carbon (OC), aggregate stability (MWD), bulk density (BD) and carbon exchange capacity (CEC)—treated with OMSW biochar in comparison to untreated sites through flume experiments. Moreover, regression models were developed to predict <i>D</i>_c, <i>K</i>_r and <i>τ</i>_c for both treated and untreated soils. Compared with the untreated soil, the application of this biochar noticeably increased OC (+85%), MWD (+51%) and CEC (+101%), and reduced BD (−11%) and <i>D</i>_c (−31%). The correlation analysis revealed significant but not high associations between physical properties on one the hand, and soil detachment capacity in rills, on the other hand. Overall, the soil treatment with OMSW biochar impacted agro-forest soils to a severe extent. Treated soils were discriminated from untreated sites into two distinct groups by the principal component analysis and agglomerative hierarchical cluster analysis. The linear equations interpolating <i>D</i>_c and <i>τ</i> estimated <i>K</i>_r, and <i>τ</i>_c with accuracy in treated and untreated soils (<i>r</i>² &gt; 0.74, <i>p</i> &lt; 0.05). The best prediction capacity of <i>D</i>_c was given by power equations applied to the stream power (<i>r</i>² &gt; 0.78, <i>p</i> &lt; 0.05). The multiple regression equation developed to estimate <i>D</i>_c from the water flow rate and soil slope was also very accurate (<i>r</i>² &gt; 0.95 and NSE, coefficient of Nash and Sutcliffe, &gt; 0.89). These results help land managers and hydrologists to control and predict rill detachment in long and steep hillslopes against the risk of soil erosion.</p>\u0000 </div>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Perceptual Model of Drivers and Limiters of Coastal Groundwater Dynamics","authors":"Daniel V. Kretschmer,&nbsp;Holly A. Michael,&nbsp;Nils Moosdorf,&nbsp;Gualbert H. P. Oude Essink,&nbsp;Marc F. P. Bierkens,&nbsp;Thorsten Wagener,&nbsp;Robert Reinecke","doi":"10.1002/hyp.70058","DOIUrl":"https://doi.org/10.1002/hyp.70058","url":null,"abstract":"<div>\u0000 \u0000 <p>Coastal groundwater is a vital resource for coastal communities around the globe, and submarine groundwater discharge (SGD) delivers nutrients to coastal marine ecosystems. Climatic changes and anthropogenic actions alter coastal hydrology, causing seawater intrusion (SWI) globally. However, the selection of SWI and SGD study sites may be highly biased, limiting our process knowledge. Here, we analyse hydroenvironmental characteristics of coastal basins studied in 1298 publications on SGD and SWI to understand these potential biases. We find that studies are biased towards basins with gross domestic product per capita below (SWI) and above (SGD) the median of all global coastal basins. Urban coastal basins are strongly overrepresented compared to rural coastal basins, limiting our progress in understanding undisturbed natural processes. Despite the connection between anthropogenic activity and coastal groundwater issues, and the consequential overrepresentation of urban basins in coastal groundwater studies, perceptual (or conceptual) models of coastal groundwater rarely include anthropogenic influences aside from pumping (e.g., subsidence, land use change). Taking a holistic view on coastal groundwater flows, we have developed an editable perceptual model illustrating the current understanding, including both natural and anthropogenic drivers. As SGD and SWI in new areas of the globe are studied, we advocate for researchers to utilise and further edit this perceptual model to openly communicate our process understanding and study assumptions.</p>\u0000 </div>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"39 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/hyp.70058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}