Paper Push: 2026-07-24
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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 9 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, 9 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
O insensata cura de' mortali.
Dante, Commedia, Paradiso XI, 1; Italian original from Kalliope
这句感叹凡人的忧虑多么无理。它从天堂视角回看世俗焦虑，带有强烈反讽。
This line laments the senseless cares of mortals. From Paradiso's height, ordinary anxieties look painfully misplaced.
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. Intensifying ocean stratification reduces vertical phosphate supply and carbon sink magnitude
作者Authors: Rui Wang; Xuegang Li; Jinming Song; Zhibo Wang; Shanshan Liu; Guorong Zhong; Yanjun Wang; Jun Ma; et al.
发表月份Publication month: 2026-07 2026-07
Limnology and Oceanography · DOI: 10.1002/lno.70463
关键词Tags: phytoplankton; vertical structure phytoplankton; vertical structure
摘要：近几十年来，全球变暖导致的海洋分层深刻影响了营养物循环。作为西北太平洋最大的边缘海，南海（SCS）为研究这些反应提供了一个具有代表性的环境。基于二十年的温度、盐度和营养物数据集，我们量化了南海分层的演变、其对深水磷酸盐（PO 4 3− ）向上输送的影响以及由此产生的碳汇变化。结果表明，层结不断加剧，温跃层上边界向上移动，下边界向下移动，厚度增加，垂直混合减弱。 尽管来自河流和大气沉降的外部输入增加，并且混合层中浮游植物对 PO 4 3− 的消耗减少，但 PO 4 3− 浓度持续下降，表明从深水穿过温跃层进入表层的养分通量大幅减少。上部水柱（混合层加温跃层）中PO 4 3− 的最小净减少量为-0。 047 Gmol·yr -1 。 PO 4 3− 供应量的下降限制了初级生产并减少了CO 2 吸收，导致南海碳汇估计减少2. 21 × 10 5 t CO 2 ·yr -1 。
Abstract: In recent decades, global warming‐driven ocean stratification has profoundly affected nutrient cycling. As the largest marginal sea in the northwestern Pacific, the South China Sea (SCS) provides a representative setting to examine these responses. Based on two decades of temperature, salinity, and nutrient datasets, we quantified the evolution of stratification in the SCS, its impacts on the upward transport of deep‐water phosphate (PO 4 3− ), and the resulting changes in carbon sink. Results show an increasing intensification of stratification, with an upward shift of the thermocline's upper boundary, a downward shift of its lower boundary, increased thickness, and weakened vertical mixing. Despite enhanced external inputs from rivers and atmospheric deposition and reduced phytoplankton consumption of PO 4 3− in the mixed layer, PO 4 3− concentrations have declined persistently, indicating a substantial reduction in nutrient flux from the deep water across the thermocline into the surface layer. The minimum net reduction of PO 4 3− in the upper water column (mixed layer plus thermocline) was −0.047 Gmol·yr −1 . This decline in PO 4 3− supply constrained primary production and reduced CO 2 uptake, leading to an estimated carbon sink reduction of 2.21 × 10 5 t CO 2 ·yr −1 in the SCS.
2. Significant contribution of petrogenic organic carbon to suspended particulate organic carbon in the Beaufort Sea
作者Authors: Dahae Kim; Jung‐Hyun Kim; Sujin Kang; Yeon‐Sik Bong; Kyung‐Hoon Shin
发表月份Publication month: 2026-07 2026-07
Limnology and Oceanography · DOI: 10.1002/lno.70455
关键词Tags: ocean biogeochemistry ocean biogeochemistry
摘要：从受永久冻土影响的景观中回收的陆地有机碳越来越被认为是北极碳循环的关键组成部分。在这项研究中，我们通过将双同位素分析（Δ 14 C org 、δ 13 C org ）与分子生物标志物（木质素酚）相结合，研究了麦肯齐海槽表面混合层中颗粒有机碳的来源。在以前基于沉积物的源解析方法的基础上，我们评估了它们对沿加拿大波弗特海陆架到斜坡横断面收集的悬浮颗粒物质的适用性。为了解决端元组成的不确定性，我们实施了基于蒙特卡罗的混合模型，该模型集成了多种地球化学示踪剂，包括 Δ 14 C org 、δ 13 C org 、3,5-二羟基苯甲酸与香草酚 (3,5-Bd/V) 比率和木质素酚浓度。 我们的结果表明，岩石有机碳对上、下极性混合层中的颗粒有机碳贡献很大，范围为 11% 至 53%。这些发现为北极地表水域中存在石油有机碳提供了直接证据，并强调了其在陆架碳动态中的积极作用。这种古老的、难以处理的碳库在悬浮状态中的持续存在，强调了在快速变暖的北极评估陆地碳动员、转化和埋藏时需要将成岩有机碳纳入其中。
Abstract: Remobilized terrestrial organic carbon from permafrost‐affected landscapes is increasingly recognized as a key component of Arctic carbon cycling. In this study, we investigated the sources of particulate organic carbon in the surface mixed layers across the Mackenzie Trough by combining dual‐isotope analyses (Δ 14 C org , δ 13 C org ) with molecular biomarkers (lignin phenols). Building on previous sediment‐based source apportionment approaches, we assessed their applicability to suspended particulate matter collected along a shelf‐to‐slope transect in the Canadian Beaufort Sea. To address uncertainties in end‐member composition, we implemented a Monte Carlo‐based mixing model that integrates multiple geochemical tracers, including Δ 14 C org , δ 13 C org , 3,5‐dihydroxybenzoic acid to vanillyl phenols (3,5‐Bd/V) ratio, and lignin phenol concentrations. Our results showed that petrogenic organic carbon contributed substantially, ranging from 11% to 53%, to particulate organic carbon in both the upper and lower polar mixed layers. These findings provide direct evidence for the presence of petrogenic organic carbon in Arctic surface waters and highlight its active role in shelf carbon dynamics. The persistence of this ancient, refractory carbon pool in suspension emphasizes the need to include petrogenic organic carbon in assessments of terrestrial carbon mobilization, transformation, and burial in a rapidly warming Arctic.
3. Selenium speciation dynamics in the Baltic and North Seas: Competing influences of marine and terrestrial inputs, biological activity, and redox conditions
作者Authors: Esther S. Breuninger; Elyssa Beyrouti; Julie Tolu; Zoé Le Bras; Sylvain Bouchet; Lenny H.E. Winkel
发表月份Publication month: 2026-07 2026-07
Limnology and Oceanography · DOI: 10.1002/lno.70460
关键词Tags: phytoplankton; vertical structure phytoplankton; vertical structure
摘要：尽管沿海地区对于硒（Se）从河流到公海的转移及其对食物网的生物利用度非常重要，但这些生态系统中溶解的硒浓度和形态仍然知之甚少。我们进行了一项为期 3 年的研究，每月在从北海到波罗的海中部的五个监测站进行水柱采样，捕获盐度、氧化还原条件和生物生产力的大梯度，以量化溶解的硒形态并表征随时间变化的环境梯度中的硒形态。尽管所有子流域的总溶解硒浓度非常相似（66 ± 17 ng·L -1 ），但硒形态呈现出截然不同的空间和垂直模式。 来自北海的受海洋影响的水域以生物可利用的无机氧化硒物种（亚硒酸盐：Se IV 和硒酸盐：Se VI ）为主，而咸水波罗的海本土富含还原有机硒和元素硒（Se −II + Se 0 ）。垂直剖面显示地表水中持续存在 Se IV 消耗，表明所有站点都有生物吸收，而 Se −II + Se 0 则表现出浮游植物生物量高期间的生产和随后的垂直运输，导致缺氧和缺氧水域中的积累。这些对比模式表明根本不同的物种形成和转化机制：充分混合的海洋系统通过频繁的水交换维持生物可利用的无机硒的有效循环，而永久分层的波罗的海系统为缺氧深水中减少的硒物种创造了一个重要的汇。 我们的结果证明了水柱结构和氧化还原条件如何控制沿海系统中硒的生物利用度和归宿，这对于了解扩大含氧最低区的微量营养素动态以及气候驱动的沿海分层变化具有重要意义。
Abstract: Despite the importance of coastal areas for the transfer of selenium (Se) from rivers to the open ocean and its bioavailability to food webs, dissolved Se concentrations and speciation in these ecosystems remain poorly understood. We conducted a 3‐yr study with monthly water column sampling at five stations spanning from the North Sea to the central Baltic Sea, capturing large gradients of salinity, redox conditions, and biological productivity to quantify dissolved Se species and characterize Se speciation across environmental gradients over time. Despite remarkably similar total dissolved Se concentrations (66 ± 17 ng·L −1 ) across all sub‐basins, Se speciation showed contrasting spatial and vertical patterns. Marine‐influenced waters from the North Sea were dominated by bioavailable inorganic oxidized Se species (selenite: Se IV and selenate: Se VI ), while the brackish Baltic Proper was enriched in reduced organic and elemental Se (Se −II + Se 0 ). Vertical profiles showed consistent Se IV depletion in surface waters, indicating biological uptake across all stations, while Se −II + Se 0 exhibited both production during periods of high phytoplankton biomass and subsequent vertical transport, leading to accumulation in hypoxic and euxinic waters. These contrasting patterns suggest fundamentally different speciation and transformation regimes: well‐mixed marine systems maintain efficient recycling of bioavailable inorganic Se through frequent water exchange, whereas the permanently stratified Baltic system creates a significant sink for reduced Se species in oxygen‐depleted deep waters. Our results demonstrate how water column structure and redox conditions control Se bioavailability and fate in coastal systems, with implications for understanding micronutrient dynamics in expanding oxygen minimum zones and climate‐driven changes in coastal stratification.
4. Data-driven modelling of coastal water quality dynamics
作者Authors: Muhammad Uzair Mahmood; Man Sing Wong; Majid Nazeer; Sawaid Abbas; Alessandro Stocchino; Ken Tse Man Wong
发表月份Publication month: 2026-07 2026-07
Frontiers in Marine Science · DOI: 10.3389/fmars.2026.1897038
关键词Tags: phytoplankton; bio-optics phytoplankton; bio-optics
摘要：长期沿海监测网络提供了评估不同沿海海湾水质可预测性变化的机会。然而，大多数机器学习研究都集中在单个站、光学活性变量或短验证期上。我们分析了 37 年（1986 年至 2023 年）来自四个香港湾系统（中央港口、东部海湾、南部海湾和西部海湾）94 个站的每月现场数据，以测试经验可预测性和排名最高的水质预测因子是否随区域水文学而系统变化。八个参数：氨氮、硝酸盐、亚硝酸盐氮；溶解氧；酸碱度；盐度;温度;和叶绿素-a 进行了评估。 五种机器学习模型随机森林 (RF)、梯度提升 (GB)、XGBoost (XGB)、支持向量机 (SVM) 和人工神经网络 (ANN) 在按时间顺序 70/30 分割的情况下使用贝叶斯优化超参数进行了评估。基于树的整体表现最稳定，对温度和盐度的表现较强，对选定营养物质的表现中等至可变，而对溶解氧和 pH 值的可转移性较弱。在时间验证框架下，叶绿素-a 仍然是大多数海湾系统中最不可预测的变量之一。 SHAP分析揭示了预测结构的区域转变：盐度、温度和溶解氧在混合结构的中部、东部和南部系统中占主导地位，而硝酸盐和氨在受珠江影响的西部海湾中变得更加重要。 长期分析表明，城市化的中央港口以及南部和西部海湾的 pH 值呈下降趋势，而东部海湾则保持相对稳定。这些发现为按时间顺序验证的经验水质可预测性提供了区域基准，并确定了未来预测应用中纳入滞后水文气象、流域和流量变量的必要性。
Abstract: Long-term coastal monitoring networks provide the opportunity to evaluate how water-quality predictability varies across contrasting coastal bays. However, most machine learning studies focused on individual stations, optically active variables or short validation periods. We analyze 37 years (1986-2023) of monthly in-situ data from 94 stations across four Hong Kong Bay systems Central Harbours, Eastern Bays, Southern Bays, and Western Bays to test whether empirical predictability and highest-ranked water-quality predictors vary systematically with regional hydrography. Eight parameters: ammonia, nitrate, and nitrite nitrogen; dissolved oxygen; pH; salinity; temperature; and chlorophyll-a were assessed. Five machine-learning models Random Forest (RF), Gradient Boosting (GB), XGBoost (XGB), Support Vector Machine (SVM), and Artificial Neural Network (ANN) were evaluated under chronological 70/30 split with Bayesian-optimised hyperparameters. Tree-based ensembles produced the most stable performance overall, with strong performance for temperature and salinity, moderate-to-variable performance for selected nutrient species, and weak transferability for dissolved oxygen and pH. Chlorophyll-a remained among the least predictable variables across most bay systems under the chronological validation framework. SHAP analysis revealed regional transition in predictor structure: salinity, temperature and dissolved oxygen dominated mixing-structured Central, Eastern and Southern systems, while nitrate and ammonia became more important in Pearl River-influenced Western Bays. Long-term analyses indicated a declining pH trend in the urbanised Central Harbours and Southern and Western Bays, whereas Eastern Bays remained comparatively stable. These findings provide regional benchmark for empirical water-quality predictability under chronological validation and identify the need to incorporate lagged hydrometeorological, watershed and discharge variables for future forecasting applications.
5. Comparative analysis on spectral characteristics of PRISMA and EnMAP hyperspectral missions
作者Authors: Valeria La Pegna; Sora Seo; Davide De Santis; Fabio Del Frate; Diego Loyola
发表月份Publication month: 2026-07 2026-07
Remote Sensing · DOI: 10.3389/frsen.2026.1856867
关键词Tags: phytoplankton; bio-optics phytoplankton; bio-optics
摘要：鉴于仪器特性的相似性，对意大利航天局（ASI）运营的 PRISMA 和德国航空航天中心（DLR）开发的 EnMAP 的高光谱任务进行了比较分析。这项工作研究了这两个卫星光学数据之间的相似性和差异，提供了两个传感器的数据可以可靠互换的光谱区域的轮廓。该分析是通过分析完整的可见光和近红外 (VNIR) 光谱并检查对二氧化氮、叶绿素和 NDVI 等关键环境参数敏感的选定光谱范围来进行的。 对欧洲-地中海地区不同季节采集的总共 11 个 PRISMA 和 EnMAP 同位高光谱图像对进行了分析，重点关注代表性的土地覆盖类别（裸土、植被、城市地区和水域）。应用预处理步骤来标准化采集观察几何形状，并使用两个传感器的产品的大气层顶部（TOA）水平来避免每个运营机构采用的大气校正方案带来的不一致。总体而言，定量和定性评估证实了整个 VNIR 光谱中 PRISMA 和 EnMAP 高光谱测量之间的强烈对应性，其中 SAM 始终低于 0. 1 rad。 然而，统计分析表明，对于植被敏感光谱窗口（750-940 nm），两个传感器之间的一致性相对较低，其中STD为0. 067和SAM为0. 097时观察到较大偏差，而NO 2光谱范围（420-500 nm）显示较低的SAM为0. 048和STD为0. 045。
Abstract: Given the similarities in their instrumental characteristics, a comparative analysis was conducted between hyperspectral missions of PRISMA, operated by the Italian Space Agency (ASI), and EnMAP, developed by the German Aerospace Center (DLR). This work investigates both the similarities and discrepancies between these two satellite optical data, providing an outline of the spectral regions where data from both sensors can be reliably interchanged. The analysis was performed by analyzing the full visible and near-infrared (VNIR) spectrum and by examining selected spectral ranges sensitive to key environmental parameters, such as nitrogen dioxide, chlorophyll and NDVI. A total of 11 PRISMA and EnMAP co-located hyperspectral image pairs acquired across different seasons over the Euro-Mediterranean region were analyzed, focusing on representative land cover classes (bare soil, vegetation, urban areas and waters). Preprocessing steps were applied to standardize the acquisition viewing geometries, and the top of atmosphere (TOA) level of products from the two sensors were used to avoid inconsistencies introduced by atmospheric correction schemes adopted by each operating agency. Overall, the quantitative and qualitative assessments confirm a strong correspondence between the PRISMA and EnMAP hyperspectral measurements across the VNIR spectrum, with SAM always below 0.1 rad. However, the statistical analysis reveals relatively low consistency between the two sensors for the vegetation sensitive spectral window (750–940 nm), where larger deviations are observed with STD of 0.067 and SAM of 0.097, while the NO 2 spectral range (420–500 nm) shows lower SAM of 0.048 and STD of 0.045.
重点关注团队Focused team
6. Impact of Air–Sea Turbulent Heat Flux on Eddy-Induced Sea Surface Temperature in the Northwestern Pacific Ocean
作者Authors: Xiangyu Yao; Yunlong Shi
发表月份Publication month: 2026-07 2026-07
Sensors · DOI: 10.3390/s26154665
关键词Tags: ocean biogeochemistry ocean biogeochemistry
摘要：中尺度涡流在上层海洋热量重新分配中发挥着重要作用，但控制涡流引起的海面温度异常（SSTA）模式的机制仍不完全清楚。在这项研究中，我们研究了海气湍流热通量阻尼如何调节西北太平洋副热带逆流（STCC）和黑潮延伸（KE）区域涡流引起的海温异常模式。利用2010年至2019年的卫星观测、再分析产品和涡旋轨迹数据，我们合成了不同季节的气旋和反气旋涡流，并量化了单极和偶极海温异常分量的相对贡献。结果表明，无论是暖季还是冷季，STCC 区域都比 KE 区域表现出更大的偶极子贡献和更高的标准化海温阻尼率。 这种区域对比表明，较强的海温异常阻尼与更明显的偶极海温异常模式相关，而较弱的阻尼则有利于更单极的结构。归一化阻尼率的空间分布与湍流热通量响应率的空间分布非常相似，而混合层深度似乎在塑造大尺度阻尼模式中发挥次要作用。此外，阻尼率随着背景风速的增加而增加，表明风速可以通过增强湍流热通量反馈来调节涡流引起的海温异常模式。这些发现强调了海气湍流热通量阻尼在形成涡流引起的海温异常模式的区域差异中的潜在作用，并为理解西北太平洋中尺度海气相互作用提供了有用的视角。
Abstract: Mesoscale eddies play an important role in upper-ocean heat redistribution, yet the mechanisms controlling eddy-induced sea surface temperature anomaly (SSTA) patterns remain incompletely understood. In this study, we investigate how air–sea turbulent heat flux damping modulates eddy-induced SSTA patterns in the Subtropical Countercurrent (STCC) and Kuroshio Extension (KE) regions of the northwestern Pacific. Using satellite observations, reanalysis products, and eddy trajectory data from 2010 to 2019, we composite cyclonic and anticyclonic eddies in different seasons and quantify the relative contributions of monopole and dipole SSTA components. The results show that the STCC region exhibits a larger dipole contribution and a higher normalized SSTA damping rate than the KE region in both warm and cold seasons. This regional contrast suggests that stronger SSTA damping is associated with a more pronounced dipole SSTA pattern, whereas weaker damping favors a more monopole structure. The spatial distribution of the normalized damping rate closely resembles that of the turbulent heat flux response rate, while mixed-layer depth appears to play a secondary role in shaping the large-scale damping pattern. In addition, the damping rate increases with background wind speed, indicating that wind speed may modulate eddy-induced SSTA patterns by enhancing turbulent heat flux feedback. These findings highlight the potential role of air–sea turbulent heat flux damping in shaping regional differences in eddy-induced SSTA patterns and provide a useful perspective for understanding mesoscale air–sea interaction in the northwestern Pacific.
7. Non-Classical Spring-to-Summer Phytoplankton Community Reorganization in Liaodong Bay Associated with Shifts in Phosphorus Regime and Nutrient Stoichiometry
作者Authors: Baozhan Liu; Zhaohui Wang; Minghao Yin; Yanqing Li; Xiansheng Zhang; Guangjun Song; Xin Song; Ruiqiang Shi; et al.
发表月份Publication month: 2026-07 2026-07
Microorganisms · DOI: 10.3390/microorganisms14081611
关键词Tags: phytoplankton; microbial carbon phytoplankton; microbial carbon
摘要：在温带沿海水域，浮游植物群落通常遵循经典的季节模式，硅藻在春季占主导地位，甲藻在夏季变得更加突出。然而，富营养化辽东湾春夏季浮游植物群落重组的特征仍不清楚。在此，我们研究了2025年春夏辽东湾浮游植物群落和环境条件的季节变化。浮游植物群落经历了与经典季节模式不同的明显的春夏季重组。春季，甲藻占群落总丰度的 63. 51%，其中异养甲藻 N. scintillans 占该部分的 99. 56%。相比之下，硅藻占夏季群落的 91. 02%，其中 Coscinodiscus granii、Skeletonema costatum 和其他硅藻类群共享优势。 这种重组与磷状况和养分化学计量的季节性变化相一致，从低溶解无机磷 (DIP; 0. 12 μmol P L⁻1)、溶解有机磷 (DOP; 0. 28 μmol P L⁻1) 和春季高 N:P 到较高 DIP (0. 66 μmol P L−1)、较低 DOP (0. 18 μmol P L−1)、较低夏季 N:P 和更高的 Si:N。相关性和冗余分析表明，春季以 N. scintillans 为主的组合与富含 DOP 和高 N:P 的条件大致一致，而夏季主导的硅藻则与 DIP、溶解硅酸盐 (DSi) 和 Si:N 梯度大致一致，尽管并非所有双变量关系都很显着。 这些模式表明，春季潜在的相对无机磷缺乏可能不太有利于硅藻的优势，而夏季较高的 DIP、较低的 N:P 和较高的 Si:N 与更有利于多硅藻扩张的资源状况一致。总体而言，辽东湾浮游植物群落表现出非经典的季节性重组，从春季以闪烁藻为主的组合，而不是传统的自养甲藻为主的阶段，到夏季多硅藻共同主导的阶段，这与磷状况和营养化学计量的变化相一致。
Abstract: In temperate coastal waters, phytoplankton communities often follow a classical seasonal pattern, with diatoms dominating in spring and dinoflagellates becoming more prominent during summer. However, spring-to-summer phytoplankton community reorganization in eutrophic Liaodong Bay remains poorly characterized. Here, we examined seasonal changes in phytoplankton communities and environmental conditions in Liaodong Bay in spring and summer 2025. The phytoplankton community underwent a marked spring-to-summer reorganization that differed from the classical seasonal pattern. In spring, dinoflagellates accounted for 63.51% of total community abundance, with the heterotrophic dinoflagellate N. scintillans comprising 99.56% of this fraction. By contrast, diatoms comprised 91.02% of the summer community, with Coscinodiscus granii, Skeletonema costatum, and other diatom taxa sharing dominance. This reorganization coincided with a seasonal shift in phosphorus regime and nutrient stoichiometry, from low dissolved inorganic phosphorus (DIP; 0.12 μmol P L⁻¹), dominance of dissolved organic phosphorus (DOP; 0.28 μmol P L⁻¹) and high N:P in spring to higher DIP (0.66 μmol P L−1), lower DOP (0.18 μmol P L−1), lower N:P, and higher Si:N in summer. Correlation and redundancy analyses indicated that the spring N. scintillans-dominated assemblage was broadly aligned with DOP-rich and high-N:P conditions, whereas summer-dominant diatoms were broadly aligned with DIP, dissolved silicate (DSi), and Si:N gradients, although not all bivariate relationships were significant. These patterns suggest that potential relative inorganic phosphorus deficiency in spring may have been less favorable for diatom dominance, whereas higher DIP, lower N:P, and higher Si:N in summer were consistent with a resource regime more favorable for multi-diatom expansion. Overall, the phytoplankton community in Liaodong Bay exhibited a non-classical seasonal reorganization from a spring N. scintillans-dominated assemblage, rather than a conventional autotrophic dinoflagellate-dominated stage, to summer multi-diatom co-dominance, coinciding with shifts in phosphorus regime and nutrient stoichiometry.
其他相关期刊：按主题相关性补充Other relevant journals: topical supplements
8. Marine heatwaves in the Northeast Pacific intensify landfalling atmospheric rivers on the west coast of North America
作者Authors: Christoph Renkl; Hyodae Seo; Arthur J. Miller
发表月份Publication month: 2026-07 2026-07
Scientific Reports · DOI: 10.1038/s41598-026-62522-2
关键词Tags: marine heatwaves marine heatwaves
摘要：北美西海岸的极端降水通常与海洋蒸发引发的大气河流（AR）有关。当 AR 与海洋热浪 (MHW) 相互作用时，它们可以形成具有放大水文影响的复合极端事件。在这里，我们量化了 MHW 如何通过热力学海气相互作用过程影响登陆 AR 的强度和降水。我们使用高分辨率区域耦合海洋-大气系综模拟来隔离与大规模 MHW 相关的海面温度 (SST) 异常的影响，同时限制天气尺度的大气环流。 重点关注 2013-16 年东北太平洋 MHW 期间有据可查的 AR 事件，我们发现异常温暖的海温增强了蒸发和低对流层水分可用性，导致综合水汽输送的强劲增加和登陆 AR 的加强。水分输送的增强导致沿海降水提前发生并大幅增加，特别是在加利福尼亚州的干旱脆弱地区。水分收支诊断表明，这种放大是由对海温异常的直接热力学响应引起的，而不是通过大规模大气环流变化的间接调节。从该案例研究中获得的见解确定了连接 MHW 和 AR 的热力学路径，强调了持续气候变暖下持续海洋热异常在形成复合水文极端事件中的作用。
Abstract: Extreme precipitation along the west coast of North America is often associated with atmospheric rivers (ARs), fueled by evaporation from the ocean. When ARs interact with marine heatwaves (MHWs), they can form compound extreme events with amplified hydrological impacts. Here, we quantify how MHWs influence the intensity and precipitation of landfalling ARs through thermodynamic air–sea interaction processes. We use high-resolution regional coupled ocean–atmosphere ensemble simulations to isolate the influence of large-scale MHW-related sea surface temperature (SST) anomalies while constraining the synoptic-scale atmospheric circulation. Focusing on well-documented AR events during the 2013–16 Northeast Pacific MHW, we show that anomalously warm SSTs enhance evaporation and lower-tropospheric moisture availability, leading to a robust increase in integrated vapor transport and intensified landfalling ARs. The enhanced moisture transport results in earlier onset and substantially increased coastal precipitation, particularly over drought-vulnerable regions of California. Moisture-budget diagnostics demonstrate that this amplification arises from a direct thermodynamic response to SST anomalies, rather than indirect modulation through changes in large-scale atmospheric circulation. Insights gained from this case study identify a thermodynamic pathway linking MHWs and ARs, highlighting the role of persistent oceanic thermal anomalies in shaping compound hydrological extremes under continued climate warming.
9. Solution of sea surface backscattering problem using the integral equation method
作者Authors: V.V. Akhiyarov; E.A. Ishchenko; Yu.G. Pasternak; D.K. Proskurin
发表月份Publication month: 2026-06 2026-06
Journal of Radio Electronics · DOI: 10.30898/1684-1719.2026.6.5
关键词Tags: backscattering; vertical structure backscattering; vertical structure
摘要：本文简要概述了海浪并研究了海面频谱的各种模型。提出了海面变化模型，并考虑了用积分方程方法连续实现的粗糙海面的波浪散射问题。获得由大海散射的 VHF 信号的频谱，用于了解入射场的垂直和水平偏振。结果表明，风速为3~5 m/s时，散射信号谱符合共振（布拉格）散射理论；随着海浪的增加，反向散射逐渐从共振过渡到非共振。
Abstract: This paper provides a brief overview of sea waves and examines various models of sea surface spectrum. A model of sea surface variation is presented, and wave scattering problem from rough sea surface successive realizations using the integral equation method is considered. Spectra of a VHF signal scattered by the sea are obtained for vertical and horizontal polarization of the incident field. It is shown that at wind speeds of 3–5 m/s, the scattered signal spectra correspond to the resonant (Bragg) scattering theory; with increasing sea waves there is a gradual transition from resonant to non-resonant backscattering.
