Paper Push: 2026-07-28
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每日论文推送：BGC-Argo、海色/海洋光学、海洋热浪与碳泵Daily Paper Push: BGC-Argo, ocean colour/ocean optics, marine heatwaves and carbon pump
本期由 GitHub Actions 自动检索生成：Nature/Science 系列优先，其次是用户指定重点期刊，再补充重点关注团队的新论文，最后纳入其他相关期刊；历史去重后保留 10 篇，不超过每日 50 篇上限。 This issue was generated automatically by GitHub Actions: Nature and Science series first, then the user-defined priority journals, then new papers from the focused team, followed by other relevant journals as topical supplements. After deduplication, 10 papers remain, below the daily limit of 50.
Download Word summary
无 mechanism sketch 图。今天的意大利语卡片： No mechanism sketch figure today. Daily Italian card:
每日一句意大利语Daily Italian
Ciò che per l'universo si squaderna.
Dante, Commedia, Paradiso XXXIII, 87; Italian original from Kalliope
这句承接上一句，指那些在宇宙中分散展开的一切。它与“被爱装订成一卷”的意象构成对照。
This line refers to what is scattered through the universe. It completes the contrast with all things bound together by love.
趋势总结Trend Summary
本期重点关注 BGC-Argo、海色遥感/海洋光学、海洋热浪、浮游植物垂向结构和碳泵过程。筛选逻辑不再只限于重点期刊；当高影响力期刊当天新增较少时，会额外检索重点关注团队作者的新论文，并用海洋、海色/光学和碳循环关键词过滤，再从其他相关期刊补充候选论文。
This issue focuses on BGC-Argo, ocean-colour remote sensing, ocean optics, marine heatwaves, vertical phytoplankton structure and carbon-pump processes. The selection is no longer limited to priority journals; when few high-impact papers are newly available, the workflow also checks focused-team authors and filters those papers with ocean, ocean-colour/optics, and carbon-cycle keywords before adding other relevant journals as supplements.
重点期刊：按影响力和相关性排序Key journals: ordered by impact and relevance
1. From White to Green to Blue? Trajectories of Phytoplankton Communities in a Warming Southern Ocean
作者Authors: Oscar Schofield; Scott C. Doney; Heidi Dierssen; Quintin P. Diou-Cass; Matthew J. Oliver; Sharon E. Stammerjohn; Jessica S. Turner; Michael P. Meredith
发表月份Publication month: 2026-07 2026-07
Annual Review of Marine Science · DOI: 10.1146/annurev-marine-040725-022001
关键词Tags: phytoplankton phytoplankton
摘要：南大洋正在经历变暖、冰融化和风力增强。浮游植物生物量增加与冰川和海冰变暖和减少相关的预测得到了观测结果的支持。然而，随着风强度持续增加以及冰川和海冰减少，长期预测表明浮游植物生物量将会下降。根据系统的基本状态和气候变化的速度，南大洋周围的转变将在地理上有所不同。浮游植物生物量的最初增长将由硅藻和棕囊藻驱动。分层驱动的浮游植物生物量增加将趋于平稳，同时群落组成也会发生变化，隐生植物的重要性增加，浮游植物大小分布减少。 在接下来的几十年里，气候预测表明冰层持续减少，加上风的增加，由此产生的更深的混合层导致硅藻和隐植物的减少以及混合鞭毛虫的主导地位。从长远来看（几十年到一个世纪），风将不断加深上层海洋混合层的深度，超微型浮游生物的重要性将增加，生物量将下降。这些变化将深刻影响南大洋生态和生物地球化学。
Abstract: The Southern Ocean is experiencing warming, melting of ice, and increasing wind. Predictions of increasing phytoplankton biomass associated with warming and declining glacial and sea ice are supported by observations. As wind intensity continues to increase and glacial and sea ice decline, however, the long-term projections indicate that phytoplankton biomass will decline. The transition will vary geographically around the Southern Ocean depending on the base state of the system and rate of climate change. The initial increase in phytoplankton biomass will be driven by diatoms and Phaeocystis . The stratification-driven increases in phytoplankton biomass will plateau, accompanied by shifts in community composition with the increased prominence of cryptophytes and decreased phytoplankton size distributions. Over the next several decades, climate projections indicate continued declines in ice coupled with increasing winds, with the resulting deeper mixed layers leading to declines in diatoms and cryptophytes and the dominance of mixed flagellates. Over the long term (decades to a century), winds will continually deepen the upper-ocean mixed-layer depth, the importance of picoplankton will increase, and biomass will decline. These changes will profoundly impact Southern Ocean ecology and biogeochemistry.
2. Mesoscale Eddies Reorganize Subsurface Oxygen Minimum Layer in the Subtropical North Atlantic
作者Authors: Peiya Zhang; Weikang Zhan; Zhenting Mo; Yunchen Liu; Yiqiang Hu; Haigang Zhan; Qingyou He
发表月份Publication month: 2026-07 2026-07
Geophysical Research Letters · DOI: 10.1029/2026gl123350
关键词Tags: vertical structure vertical structure
摘要：中尺度涡旋在调节海洋物理和生物地球化学环境中发挥着关键作用。然而，它们对垂直氧气分布的影响仍然很少受到观测的限制。利用百慕大大西洋时间序列研究地点 32 年（1993 年至 2024 年）的原位氧观测结果，结合卫星跟踪的涡流，我们发现中层涡流引起的氧异常明显强于地表。反气旋涡流使地下最低氧层 (OML) 加深约 100 m，厚度减少约 30%，平均氧和最低氧增加约 3%–6%。气旋涡流引起类似但较弱的变薄，并伴有约 100 m 的向上位移。超过 80% 的方差是由等重隆起解释的，另外还有生物地球化学过程的贡献。 我们的结果强调，两种涡流类型都系统地缓解了 OML 内的低氧条件，对地下氧栖息地的变化具有重要意义。
Abstract: Mesoscale eddies play a key role in regulating oceanic physical and biogeochemical environments. However, their influence on vertical oxygen distribution remains poorly constrained by observations. Using 32 years (1993–2024) of in situ oxygen observations from the Bermuda Atlantic Time‐series Study site combined with satellite‐tracked eddies, we show that eddy‐induced oxygen anomalies are substantially stronger in the mesopelagic than at the surface. Anticyclonic eddies deepen the subsurface oxygen minimum layer (OML) by ∼100 m and reduce its thickness by ∼30%, with increases of ∼3%–6% in mean and minimum oxygen. Cyclonic eddies induce a similar but weaker thinning, accompanied by an upward displacement of about 100 m. More than 80% of the variance is explained by isopycnal heaving, with additional contributions from biogeochemical processes. Our results underscore that both eddy types systematically alleviate low‐oxygen conditions within the OML, with important implications for subsurface oxygen habitat variability.
3. Exploring Marine Biogeochemical Prediction With Linear Dynamical Frameworks
作者Authors: Y.‐Y. Kim; J. Lien; K. B. Rodgers; J.‐Y. Lee; F.‐F. Jin
发表月份Publication month: 2026-07 2026-07
Geophysical Research Letters · DOI: 10.1029/2025gl120377
关键词Tags: ocean biogeochemistry ocean biogeochemistry
摘要：海洋初级生产力（PP）的预测是海洋生态系统预测的基础。尽管有许多预测方法，但很少有人使用线性动力学来研究 PP 可预测性。在这里，我们采用线性反演模型 (LIM) 来检验东太平洋 PP 的可预测性。当从仅使用白噪声的 LIM 转向包含有色噪声的 LIM 时，预测技能显着提高，揭示了时间相关的气候强迫在扩展可预测性方面的作用。季节性变化的动态也有助于提高预测技能，特别是在第一个年度周期内。海面温度和海平面为长期预报提供了主要的长期记忆来源。 在这种记忆的基础上，生物限制性营养素铁的加入通过与这些物理驱动因素相互作用进一步增强了预测能力，尽管其固有的短期变异性很高。这一见解对海洋生物地球化学预测和更广泛的数据驱动预测具有更广泛的影响，强调了预测变量之间的记忆相互作用在提高预测性能方面的作用。
Abstract: Prediction of marine primary production (PP) forms the basis for forecasting marine ecosystems. Despite many prediction approaches, few have used linear dynamics to investigate PP predictability. Here, we implement Linear Inverse Models (LIM) to examine the predictability of PP in the eastern Pacific. Forecast skill substantially improves when moving from white‐noise‐only LIMs to those incorporating colored‐noise, revealing a role for temporally correlated climate forcing in extending predictability. Seasonally varying dynamics also contribute to enhancing forecast skill, particularly within the first annual cycle. Sea surface temperature and sea‐level provide the primary source of long‐term memory for extended forecasts. Building on this memory, the inclusion of the biolimiting nutrient iron further enhances predictive skill by interacting with these physical drivers, despite its inherently high short‐term variability. This insight has broader implications for marine biogeochemical prediction and data‐driven forecasting more generally, highlighting the role of memory interactions among predictors in improving forecast performance.
4. Earlier Timing of the Annual Deepest Mixed Layer and Phytoplankton Bloom North of the Kuroshio Extension After the 2010s
作者Authors: Yi Wang; Yang Ding; Qinyu Liu; Lixiao Xu; Fengfei Song; Keyao Wang; Yifei Gao
发表月份Publication month: 2026-07 2026-07
Geophysical Research Letters · DOI: 10.1029/2026gl122915
关键词Tags: phytoplankton phytoplankton
摘要：黑潮延伸带（KE）地区的深冬季混合层对气候和生态系统很重要，但其时空变化和明显海洋变暖下的生态影响仍然不确定。根据1980年至2025年的多个观测和再分析数据集，我们发现3月份九龙以北的混合层出现了明显的浅滩（∼40 m），减少幅度明显大于其他月份。自 2010 年代初以来，KE 以北的年度最深混合层深度 (MLD) 已从 3 月转移到 2 月，与浮游植物繁殖提前 1 个月的时间一致。三月份阿留申低气压的减弱和向极地移动对于推动这一季节性推进至关重要。在KE南部，MLD总体保持不变，因为阿留申低压引起的浅滩被相反的海洋动力效应所抵消。 这些发现表明KE以北出现了海洋物候变化。
Abstract: The deep winter mixed layer in the Kuroshio Extension (KE) region is important for the climate and ecosystems, yet its spatiotemporal variations and ecological impacts under pronounced ocean warming remain uncertain. Based on multiple observational and reanalysis data sets from 1980 to 2025, we find a pronounced shoaling (∼40 m) of the mixed layer north of the KE in March, a reduction notably larger than in other months. Since the early 2010s, the annual deepest mixed layer depth (MLD) north of the KE has shifted from March to February, coinciding with a 1‐month earlier phytoplankton bloom. The weakened and poleward‐shifted Aleutian Low in March is crucial to drive this seasonal advance. In the southern KE, MLD remains overall unchanged, because the Aleutian‐Low induced shoaling is offset by opposing ocean dynamical effects. These findings suggest an emergence of marine phenological shifts north of the KE.
5. Influence of local and remote climate processes on driving the salinification followed by freshening phases in the eastern Arabian Sea
作者Authors: Vivek V Rajiv; V. Suneel; Arjun K Sabu; Jacqueline Boutin; G.V.M. Gupta
发表月份Publication month: 2026-07 2026-07
Environmental Research Letters · DOI: 10.1088/1748-9326/ae90c8
关键词Tags: ocean biogeochemistry ocean biogeochemistry
摘要：海面盐度（SSS）调节北印度洋的上层海洋层结、海气耦合和淡水重新分配，但其在东阿拉伯海（EAS）的年际变化仍然没有得到充分量化。本研究使用整个 EAS 的高精度船载测量来评估来自 SMOS、SMAP 和 ESA 气候变化倡议 (CCI) 产品的卫星衍生 SSS。验证结果表明，CCI SSS 与原位观测结果表现出很强的一致性，并且与原位网格数据集（Willmott 技能得分 0. 81）相比，最好地捕获时空变异性。与其他数据集相比，CCI 还表现出相对较低的 RMSE (0. 93 PSU)。使用 CCI 数据集对 2010-2023 年期间 SSS 变化进行的分析揭示了两种截然不同的状况：2015-2019 年期间的盐化阶段（+0. 5 PSU），随后在 2020 年至 2023 年期间出现明显的更新阶段（−0. 5 PSU）。对降水、海洋环流和气候指数的分析表明，降雨减少和弱水平平流主导了盐化阶段。相比之下，淡水阶段是由气旋活动增加和孟加拉湾淡水输送加强导致的降水增加所驱动的。这一时期恰逢罕见的三底拉尼娜现象（2020-2022年），拉尼娜现象增强了沿海开尔文波和东印度洋流，促进了低盐度水域通过“海中河”路径的输送。这些结果突出了 EAS 盐度对本地和远程淡水过程耦合的敏感性，并证明了多传感器卫星 SSS 产品在监测气候驱动的水文变化方面的价值。
Abstract: Sea surface salinity (SSS) modulates upper-ocean stratification, air–sea coupling, and freshwater redistribution in the North Indian Ocean, yet its interannual variability in the eastern Arabian Sea (EAS) remains insufficiently quantified. This study evaluates satellite-derived SSS from the SMOS, SMAP, and ESA Climate Change Initiative (CCI) products using high-precision shipborne measurements across EAS. Validation results show that CCI SSS exhibits strong agreement with in situ observations and best captures spatial-temporal variability comparison with in situ gridded dataset (Willmott skill score 0.81). CCI also exhibit relatively lower RMSE (0.93 PSU) compared to other datasets. The analysis of interannual SSS variability using the CCI dataset during 2010–2023 reveals two contrasting regimes: a salinification phase during 2015–2019 (+0.5 PSU) followed by a pronounced freshening phase during 2020–2023 (−0.5 PSU). Analysis of precipitation, ocean circulation, and climate indices indicates that reduced rainfall and weak horizontal advection dominated the salinification phase. In contrast, the freshening phase was driven by enhanced precipitation linked to increased cyclone activity and intensified freshwater transport from the Bay of Bengal. This period coincides with the rare triple-dip La Niña (2020–2022), which strengthened coastal Kelvin waves and the East India Coastal Current, facilitating transport of low-salinity waters through the "river-in-the-sea" pathway. These results highlight the sensitivity of EAS salinity to coupled local and remote freshwater processes and demonstrate the value of multi-sensor satellite SSS products for monitoring climate-driven hydrological variability.
6. The Evidence for Linearly Scaling Ocean Gas Exchange With Sea Ice Needs Strengthening
作者Authors: Jennifer Watts; Thomas G. Bell; Karen Anderson; John Prytherch; Brian J. Butterworth; Brent Else; Scott Miller; Thomas Holding; et al.
发表月份Publication month: 2026-07 2026-07
Biogeosciences · DOI: 10.1029/2025jg009346
关键词Tags: ocean biogeochemistry ocean biogeochemistry
摘要：极地海洋是海洋吸收大气二氧化碳的关键组成部分。对气海界面吸收的估计需要对气体传输速度进行参数化，以考虑可变的海冰浓度。先前的研究使用气体交换的涡流协方差测量得出结论，二氧化碳气体转移与海冰浓度的线性比例是合适的。这些分析中海冰浓度数据分辨率和相关不确定性的影响尚未得到充分检验。在这里，我们使用精选的海冰浓度数据集重新评估了来自北冰洋和南大洋的原位海气交换数据。在南大洋，无论空间分辨率如何，线性缩放假设都成立。在北冰洋，当冰浓度低至 50% 时，就会出现线性情况的偏差。 当考虑海冰浓度数据的不确定性时，两极海洋的偏差会变得更大。在南大洋，使用卫星数据集的结果与线性比例保持一致，而船基观测表明边缘冰区内的吸收受到更大的抑制。考虑到不确定性后，北极的反应表明，在冰浓度达到 50% 或更高的地区，气体交换可能会受到抑制。北极和南大洋数据集之间的对比可能反映了观测期间海冰变化和环境条件的差异，其中北极数据捕获了过渡状态。因此，线性缩放可以作为一阶近似，但中等到高冰浓度，特别是在北极，需要进一步研究。
Abstract: Polar oceans are critical components of the oceanic uptake of atmospheric carbon dioxide. Estimates of this uptake across the air‐sea interface require parameterizations of gas transfer velocity that account for variable sea ice concentrations. Previous studies, using eddy covariance measurements of gas exchange, have concluded that linear scaling of carbon dioxide gas transfer with sea ice concentration is appropriate. The influence of sea ice concentration data resolution and associated uncertainties in these analyses has not been fully examined. Here we re‐assess published in situ air‐sea gas exchange data from the Arctic and Southern Oceans using a selection of sea ice concentration data sets. In the Southern Ocean, the linear scaling assumption holds irrespective of spatial resolution. In the Arctic Ocean, deviation from the linear case occurs at ice concentrations as low as 50%. Greater deviations become apparent in both polar oceans when sea ice concentration data uncertainties are considered. In the Southern Ocean, results using satellite data sets remain consistent with linear scaling, while ship‐based observations indicate greater suppression of uptake within the marginal ice zone. The Arctic response, after including uncertainties, indicates that gas exchange could be suppressed in regions with ice concentrations of 50% or higher. The contrast between the Arctic and Southern Ocean data sets potentially reflects differences in sea ice variability and environmental conditions during the observation periods, with the Arctic data capturing a transitional regime. Linear scaling may therefore serve as a first‐order approximation, but intermediate to high ice concentrations, particularly in the Arctic, require further investigation.
其他相关期刊：按主题相关性补充Other relevant journals: topical supplements
7. Beyond snapshots: an integrative framework for predicting responses of jellyfish’s life cycle to marine stressors
作者Authors: Sheldon Rey Boco; Christine Gloria Grace Capidos; Ian Kim Tabios; Shirlamaine Irina Calagui; Jeszianlenn L. Plaza; Hansen Escobido; Angel Mirayo; Ian Kendrich Fontanilla; et al.
发表月份Publication month: 2026-07 2026-07
Frontiers in Ecology and Evolution · DOI: 10.3389/fevo.2026.1877904
关键词Tags: marine heatwaves marine heatwaves
摘要：美杜莎动物（水母）的生态生理学必须不断发展，以应对快速变化的海洋环境的复杂性。从历史上看，用 Aurelia 和 Cassiopea spp 等水母物种进行的实验。息肉和水母依赖于急性、静态、单一应激源暴露和有限的适应期。虽然这些基础研究提供了重要数据，但它们常常无法模拟自然界中遇到的压力因素的逐渐进展、波动和相互作用，包括海洋变暖、海洋热浪、脱氧、酸化和富营养化。因此，实验室现实性与实际现场条件之间存在持续的不匹配，而高后勤成本、缺乏方法标准化和有限的实验可扩展性等加剧了这种不匹配。 g。 ，更大的水族箱尺寸。 为了弥合实验室现实与现场条件之间的差距，我们提出了一个以两种基本方法为中心的综合框架，以捕获突然暴露于独立压力源而错过的生理调整：使用逐渐环境斜坡的实验适应（包括模仿沿海和地表混合层生态系统的昼夜波动）和跨生命周期阶段的交互式多压力源（全因子）实验。在这里，交互式应激方法模拟了水母整个生命周期中环境因素的真实组合，而多组学整合将基因组学和代谢组学联系起来，以揭示观察到的生理反应（如呼吸）的分子变化。 此外，人工智能监控成像利用计算机视觉突破来弥合中宇宙实验和实时现场观察之间的差距，例如跟踪碟状体的行为。表观遗传和跨代评估通过识别可遗传的生物标志物进一步增强了该框架的力量，这些生物标志物揭示了父母的预处理如何影响后代的健康和水母繁殖的可能性。通过连接这些实验方法，例如多因素方法，这个综合框架致力于为海洋管理者提供可操作的早期预警系统和基于证据的方法来预测水母的发生。加强全球合作和持续供资必须能够在海洋压力日益增大的情况下实施这一综合框架。
Abstract: Medusozoan (jellyfish) ecophysiology must evolve to address the complexities of rapidly changing marine environments. Historically, experiments with jellyfish species such as Aurelia and Cassiopea spp. polyps and medusae have relied on acute, static, single-stressor exposures and limited acclimation periods. While these foundational studies provided essential data, they frequently fail to mimic the gradual progression, fluctuations, and interactions of stressors, including ocean warming, marine heatwaves, deoxygenation, acidification, and eutrophication, encountered in nature. Consequently, a persistent mismatch exists between laboratory realism and actual field conditions, exacerbated by high logistical costs, a lack of methodological standardization, and limited experimental scalability, e.g., larger aquarium sizes. To bridge this gap between laboratory realism and field conditions, we propose an integrative framework centered on two foundational methodologies to capture physiological adjustments missed by sudden exposures to independent stressors: experimental acclimation using gradual environmental ramps (including diel fluctuations in mimicking coastal and surface mixed-layer ecosystems) and interactive multi-stressor (full-factorial) experiments across life-cycle stages. Here, interactive stressor methodologies simulate realistic combinations of environmental factors across full life cycles of jellyfish, while multi-omics integration links genomics and metabolomics to uncover molecular changes for observed physiological responses like respiration. Furthermore, AI-monitored imaging leverages computer-vision breakthroughs to bridge the gap between mesocosm experiments and real-time field observations, such as tracking behaviors of ephyrae. Epigenetic and transgenerational assessments further enhance the power of this framework by identifying heritable biomarkers that reveal how parental preconditioning influences offspring fitness and the likelihood of jellyfish blooms. By connecting these experimental approaches, such as multi-factorial approach, this integrative framework moves toward providing marine managers with actionable early warning systems and evidence-based method in predicting jellyfish occurrences. Stronger global collaboration and sustained funding must enable implementation of this integrative framework with the increasingly stressed oceans.
8. Erosion induced coastal changes in Karasu, Türkiye: new evidence from GNSS and remote sensing data
作者Authors: Kurtulus Sedar Görmüş
发表月份Publication month: 2026-07 2026-07
Karaelmas Science and Engineering Journal · DOI: 10.7212/karaelmasfen.1896095
关键词Tags: ocean colour; backscattering; bio-optics ocean colour; backscattering; bio-optics
摘要：除了气候变化的影响外，沿海地区对自然过程和人为压力（包括定居、旅游业、工业和交通）高度敏感。因此，对这些地区进行持续监测对于可持续沿海管理和快速应对潜在侵蚀危害至关重要。使用大地测量和遥感技术可以有效地监测此类变化。研究区位于土耳其西北部萨卡里亚省卡拉苏地区，该地区已观察到严重的海岸侵蚀。发现问题后，我们于 2010 年启动了侵蚀缓解措施。此后，尽管防波堤的建设部分降低了侵蚀率，但海岸线已向陆地后退约 100 m。 在本研究中，使用开放获取的 Sentinel-2 和 Sentinel-1 数据集调查了沿海变化的现状。归一化水差指数（NDWI）应用于光学图像，而来自合成孔径雷达（SAR）数据的反向散射信息则用于描绘陆地-水域边界。此外，还采用全球导航卫星系统（GNSS）观测获得的海岸线数据作为精度评估的参考数据。根据同一时期内每两年进行的 GNSS 调查，沿约 9 公里的海岸线段测得侵蚀面积为 12,069 平方米，增生面积为 77,410 平方米。结果表明，与 Sentinel-1 结果相比，从 Sentinel-2 图像中提取的海岸线与 GNSS 得出的参考数据的一致性明显更高。 总体而言，Sentinel-2数据提供了更可靠和准确的海岸线划分，表明它们非常适合快速有效的海岸侵蚀监测，以支持可持续海岸管理。
Abstract: Coastal regions are highly sensitive to both natural processes and anthropogenic pressures including settlement, tourism, industry, and transportation, in addition to the impacts of climate change. Continuous monitoring of these areas is therefore essential for sustainable coastal management and for enabling rapid response to potential erosion hazards. Such changes can be effectively monitored using geodetic and remote sensing techniques. The study area is located in the Karasu district of Sakarya Province, in the northwestern part of Türkiye, where significant coastal erosion has been observed. Erosion mitigation measures were initiated in 2010 following the identification of the problem. Since then, the shoreline has retreated approximately 100 m landward, although the construction of breakwaters has partially reduced the erosion rate. In this study, the current state of coastal change was investigated using open-access Sentinel-2 and Sentinel-1 datasets. The Normalized Difference Water Index (NDWI) was applied to optical imagery, while backscatter information derived from Synthetic Aperture Radar (SAR) data was used to delineate the land–water boundary. Additionally, shoreline data obtained from Global Navigation Satellite System (GNSS) observations were adopted as reference data for accuracy assessment. Based on GNSS surveys conducted at two-year intervals within the same period, an erosion area of 12,069 m² and an accretion area of 77,410 m² were quantified along an approximately 9 km coastal segment. The results indicate that shoreline extraction from Sentinel-2 imagery shows significantly higher consistency with GNSS-derived reference data compared to Sentinel-1 results. Overall, Sentinel-2 data provide more reliable and accurate shoreline delineation, suggesting that they are highly suitable for rapid and effective coastal erosion monitoring in support of sustainable coastal management.
9. Impact of the Patos Lagoon jetties on inner-shelf circulation and water properties
作者Authors: Guilherme O. Cruz; Carlos A.F. Schettini
发表月份Publication month: 2026（月份未核准） 2026 (month not verified)
Ocean and Coastal Research · DOI: 10.1590/2675-2824074.25103
关键词Tags: phytoplankton; vertical structure phytoplankton; vertical structure
摘要：帕托斯泻湖口的码头长 4 公里，在单调的海岸线上形成了一个显眼的特征。在稳定的东北风（当地盛行风）的作用下，码头的背风面会形成涡流。这项研究调查了受涡流影响的内陆架的循环和水特性。我们进行了一项现场实验，以在长时间的强东北风期间收集码头背风处的水动力和水特性数据。这些条件促进泻湖流出和涡流形成。使用平行于海岸线部署的四个声学多普勒电流剖面仪（ADPC）测量水流速度和方向。使用 CTD 沿横断面测量水性质（盐度、温度、浊度、叶绿素和溶解氧）的垂直剖面。 为了补充现场实验，分析了在类似条件下获取的高分辨率 Sentinel-2 卫星图像以及来自 ERA5 的风再分析数据。结果表明，在NE风和W/NW风下都会形成涡流，其空间范围和核心位置受到风强度和与码头的相对角度的调节。通过码头流出的苦咸水会引起强烈的分层，导致上层和底层脱钩。这会产生垂直剪切流，表层向海移动，底层向陆地、朝向码头移动。然而，观测到的盐度和温度分布表明，底层还表现出跨陆架（陆上）成分，表明上升流，这可能有助于细小沉积物向岸的输送。 已确定的低溶解氧饱和度区域表明缺氧条件可能与强烈分层有关。
Abstract: The jetties on the Patos Lagoon mouth are 4 km long and form a conspicuous feature in a monotonous coast line. Under steady northeasterly winds-the prevailing local wind-an eddy is formed in the leeward of the jetties. This study investigated the circulation and water properties in the inner shelf affected by this eddy. We conducted a field experiment to collect hydrodynamic and water property data in the lee of the jetties during a prolonged event of strong northeasterly winds. These conditions promote lagoon outflow and eddy formation. Current velocity and direction were measured using four acoustic doppler current profilers (ADPC) deployed parallel to the coast line. Vertical profiles of water properties (salinity, temperature, turbidity, chlorophyll and dissolved oxygen) were measured using a CTD along transects. To complement the field experiment, high-resolution Sentinel-2 satellite imagery acquired under similar conditions was analyzed, along with wind reanalysis data from ERA5. Results revealed that eddy formation occurs under both NE and W/NW winds, the spatial extent and core position of which are modulated by wind intensity and relative angle to the jetties. Brackish water outflow through the jetties induces strong stratification, leading to a decoupling of the upper and bottom layers. This produces a vertically sheared flow, with the surface layer moving seaward and the bottom layer moving landward, toward the jetties. However, the observed salinity and temperature distributions suggest that the bottom layer also exhibits a cross-shelf (onshore) component indicating upwelling, which may contribute to the transport of fine sediments shoreward. An identified region of low dissolved oxygen saturation suggests hypoxic conditions likely associated with the intense stratification.
10. Remote Sensing Retrieval of Chlorophyll-a Concentration in the North Sea Using a Residual-Compensated Stacking Ensemble Model
作者Authors: Anran Yao; Bowen Li; Jin Liao; Xiaohan Guo; Ximeng Ma
发表月份Publication month: 2026（月份未核准） 2026 (month not verified)
IEEE Access · DOI: 10.1109/access.2026.3717083
关键词Tags: phytoplankton; ocean colour phytoplankton; ocean colour
摘要：Crossref 未提供该 DOI 的摘要。
Abstract: Crossref did not provide an abstract for this DOI.
