AGU Advances最新文献

筛选
英文 中文
Global River Sediment Retention on Delta Plains 三角洲平原的全球河流沉积物滞留
IF 7.4
AGU Advances Pub Date : 2026-10-16 DOI: 10.1029/2026AV002503
J. H. Nienhuis, J. F. Paniagua-Arroyave, F. E. Dunn, S. Cohen, T. E. Törnqvist
{"title":"Global River Sediment Retention on Delta Plains","authors":"J. H. Nienhuis,&nbsp;J. F. Paniagua-Arroyave,&nbsp;F. E. Dunn,&nbsp;S. Cohen,&nbsp;T. E. Törnqvist","doi":"10.1029/2026AV002503","DOIUrl":"https://doi.org/10.1029/2026AV002503","url":null,"abstract":"<p>Fluvial sediments have helped form approximately 830,000 km<sup>2</sup> of coastal deltaic land, a large part of which since the Holocene slowdown of global sea-level rise. The rate at which deltas have retained fluvial sediment to build deltaic land, however, has varied greatly between different deltas. Sources of variability as well as global estimates of sediment retention remain poorly resolved, limiting the assessment of future delta change. Here, we compare delta area and thickness against fluvial sediment supply to derive estimates of delta plain sediment retention for ∼1,700 deltas, representing 93% of the global fluvial sediment supply. We find that 28% ± 14% (standard error of the mean) of the global fluvial sediment discharge is retained on delta plains, totaling 5.8 Gt per year, and equating to roughly 4.3 mm yr<sup>−1</sup> as a global average sedimentation rate. The average delta, however, retains much less, about 4% ± 1%, because many smaller deltas do not retain much sediment. We observe a large difference between active and passive margins, with sediment retention much higher along the latter. Tide-dominated deltas have the most efficient morphology, and retain 11% ± 4% on average but up to 70% when weighted by sediment flux. This is much higher than the 7% ± 2% and 2% ± 1% retained by river- and wave-dominated deltas, respectively. As larger deltas retain a greater proportion of their supply, this study suggests a positive feedback that enables larger deltas to grow faster than smaller ones.</p>","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 7","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2026AV002503","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Satellite-Derived Upper-Level Vorticity as an Indicator of Short-Term Typhoon Intensity Evolution 卫星反演的高层涡度作为台风短期强度演变的一个指标
IF 7.4
AGU Advances Pub Date : 2026-10-15 DOI: 10.1029/2026AV002688
Pan Xia, Difei Deng, Xia Yang, Savin S. Chand, Min Min, Jun Li, Na Xu, Deming Meng, Qiang Yu, Rundong Zhou
{"title":"Satellite-Derived Upper-Level Vorticity as an Indicator of Short-Term Typhoon Intensity Evolution","authors":"Pan Xia,&nbsp;Difei Deng,&nbsp;Xia Yang,&nbsp;Savin S. Chand,&nbsp;Min Min,&nbsp;Jun Li,&nbsp;Na Xu,&nbsp;Deming Meng,&nbsp;Qiang Yu,&nbsp;Rundong Zhou","doi":"10.1029/2026AV002688","DOIUrl":"https://doi.org/10.1029/2026AV002688","url":null,"abstract":"<p>Accurate short-term tropical cyclone (TC) intensity forecasting remains challenging because rapidly evolving inner-core structures are difficult to observe at sufficiently high temporal resolution. Here, we derive an area-mean upper-level vorticity indicator (VORm) from minute-scale atmospheric motion vectors retrieved from the Fengyun-4B Geostationary High-speed Imager (FY-4B/GHI) using the Single-Plane Assumption–Fast Approximate Barnes Interpolation framework. Analysis of western North Pacific TCs shows that VORm closely follows the broad evolution of storm intensity while retaining substantial high-frequency structural variability. VORm exhibits a strong contemporaneous association with TC intensity and retains information related to subsequent 6-hr intensity change after accounting for the current intensity and preceding intensity tendency, indicating potential value for short-term intensity prediction. Forecast experiments further demonstrate this predictive potential. In the linear framework, incorporating VORm reduced the pooled 6-hr RMSE from 6.27 to 5.97 kt, indicating additional predictive information beyond conventional intensity and environmental predictors. In the nonlinear XGBoost framework, VORm further reduced the RMSE from 6.26 to 6.18 kt even when the preceding 6-hr intensity tendency was explicitly included, indicating that VORm still provides additional predictive information beyond recent intensity evolution. Because FY-4B/GHI winds and the derived vorticity can be obtained with very low latency, this approach offers a practical pathway for rapidly incorporating high-frequency inner-core structural information into short-range TC intensity forecasting.</p>","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 7","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2026AV002688","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ionospheric Scintillation Induced by Hot Flow Anomalies via Particle Precipitation 由粒子降水引起的热流异常引起的电离层闪烁
IF 7.4
AGU Advances Pub Date : 2026-10-09 DOI: 10.1029/2026AV002548
Jia-Chen Zhao, Qing-He Zhang, Zhong-Wei Yang, Duan Zhang, Kjellmar Oksavik, Bo-Yi Wang, Yu-Zhang Ma, Zan-Yang Xing, Yong Wang, Ling-Xin Zhao, Xiang-Yu Wang, Jin Guo, Shi-Mou Wang, Cai-Jun Yan, Bian-Long Zhao, Hong-Kai Zhang, Chang-Yue Zhao
{"title":"Ionospheric Scintillation Induced by Hot Flow Anomalies via Particle Precipitation","authors":"Jia-Chen Zhao,&nbsp;Qing-He Zhang,&nbsp;Zhong-Wei Yang,&nbsp;Duan Zhang,&nbsp;Kjellmar Oksavik,&nbsp;Bo-Yi Wang,&nbsp;Yu-Zhang Ma,&nbsp;Zan-Yang Xing,&nbsp;Yong Wang,&nbsp;Ling-Xin Zhao,&nbsp;Xiang-Yu Wang,&nbsp;Jin Guo,&nbsp;Shi-Mou Wang,&nbsp;Cai-Jun Yan,&nbsp;Bian-Long Zhao,&nbsp;Hong-Kai Zhang,&nbsp;Chang-Yue Zhao","doi":"10.1029/2026AV002548","DOIUrl":"https://doi.org/10.1029/2026AV002548","url":null,"abstract":"<p>Ionospheric scintillation disrupts trans-ionospheric radio signals and represents significant challenges for critical communication and navigation systems. Here we document that hot flow anomalies (HFAs), transient disturbances formed near Earth's bow shock, can contribute to scintillation near the cusp. We used coordinated multi-instrument observations including GNSS receivers, SuperDARN, AMPERE, DMSP/SSUSI, MMS to link an upstream HFA to the scintillation in the polar ionosphere. During 10:47–10:57 UT on 19 November 2015, enhanced phase scintillation was observed, along with a convection vortex, enhanced field-aligned currents (FACs) and nearby particle precipitation. An HFA and associated high-speed jets (HSJs) were observed in the corresponding magnetic local time (MLT) region of the magnetosheath. Our analysis indicates that the HFA disturbs the magnetopause and enhances the FACs, causing the localized ionospheric density gradient instability, thereby triggering the ionospheric scintillation. These results show that the particle precipitation caused by HFAs can strongly affect the cusp plasma and trigger significant phase scintillation. Our results provided direct observational evidence that HFAs are a contributing source of polar space-weather impacts on GNSS and radio systems.</p>","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 7","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2026AV002548","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149146726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fifty Years Later: Revisiting Viking 2 Seismic Signals Through InSight 五十年后:通过洞察号重新审视维京2号地震信号
IF 7.4
AGU Advances Pub Date : 2026-09-30 DOI: 10.1029/2026AV002319
Wanbo Xiao, Jiaqi Li, Yanbin Wang, Andrew Lazarewicz
{"title":"Fifty Years Later: Revisiting Viking 2 Seismic Signals Through InSight","authors":"Wanbo Xiao,&nbsp;Jiaqi Li,&nbsp;Yanbin Wang,&nbsp;Andrew Lazarewicz","doi":"10.1029/2026AV002319","DOIUrl":"https://doi.org/10.1029/2026AV002319","url":null,"abstract":"<p>For nearly 50 years, the origin of the candidate seismic signals recorded by Viking 2 remained unresolved because of limited instrumental sensitivity, onboard observation, data compression, and the absence of Martian seismic context. Here we reconstruct the Viking seismic workflow and reinterpret the two Viking candidate events, recorded on sol 53 and sol 80, using the seismic context established by InSight. We show that the Viking seismometer was optimized for high-spectral-frequency seismic signals, consequently reducing its sensitivity to low-spectral-frequency events. If the original 10-s S-P travel-time difference is correct, the inferred location of the sol 80 event overlaps the broad northern-plains source region suggested for the seasonally recurrent high-spectral-frequency and 2.4-Hz marsquake populations observed by InSight. Alternatively, if the first-arrival phase represents a crustal conversion phase rather than a direct P wave, the sol 80 event corresponds to a distant tectonic (low-spectral-frequency or broadband) marsquake with an estimated moment magnitude of <i>M</i><sub><i>W</i></sub> 4.6–4.8 or <i>M</i><sub><i>W</i></sub> 4.9–5.1. A meteorite impact origin cannot be excluded either. The two Viking seismic signals decay more rapidly than typical InSight marsquakes, suggesting heterogeneity in the Martian attenuation structure. Together, these findings integrate Viking observations into the modern framework of Martian seismicity, illustrating how a legacy planetary data set can acquire renewed scientific implications when re-examined in light of subsequent mission data.</p>","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 7","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2026AV002319","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149084114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Inherent Ambiguity of Extreme Event Costs Attributed to Climate Change 气候变化极端事件成本的内在模糊性研究
IF 7.4
AGU Advances Pub Date : 2026-09-30 DOI: 10.1029/2026AV002546
A. L. Match, B. E. Schaffer, S. Fueglistaler
{"title":"On the Inherent Ambiguity of Extreme Event Costs Attributed to Climate Change","authors":"A. L. Match,&nbsp;B. E. Schaffer,&nbsp;S. Fueglistaler","doi":"10.1029/2026AV002546","DOIUrl":"https://doi.org/10.1029/2026AV002546","url":null,"abstract":"<p>The excess costs of an extreme weather and climate event exacerbated by climate change are inherently ambiguous, even under perfect knowledge of climate and society, because these costs can be attributed by considering whether the event might not have happened (frequency change) or whether it might have been weaker (intensity change). Despite this inherent ambiguity, these approaches can be related by embedding each within a theoretical framework of an event arrival process, whence each approach provides a different estimator for a common quantity: excess costs per time, as needed for determining loss and damage. Each approach can consistently estimate the true excess cost rates, but only subject to restrictive conditions on their methods (some common examples of which are found to be inconsistent) and on climate and society (for which some conditions have never been evaluated). Seemingly minor technical choices can have major effects on the interpretation of attributable costs, with broad implications for their intended uses in litigation, reparations, adaptation, and planning.</p>","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 7","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2026AV002546","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149084096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Permeability, Pore Throat Size, Meteoric Influx, and Biomass Control the Depth-Distribution of Microbial Biosignatures in Sedimentary Basin Fluids 渗透率、孔喉大小、大气流和生物量控制着沉积盆地流体微生物特征的深度分布
IF 7.4
AGU Advances Pub Date : 2026-09-26 DOI: 10.1029/2026AV002557
Jennifer McIntosh, Henrik Drake, Ji-Hyun Kim, Anna Martini, Magdalena Osburn, Meera Shah, Bradley Stevenson, Grant Ferguson
{"title":"Permeability, Pore Throat Size, Meteoric Influx, and Biomass Control the Depth-Distribution of Microbial Biosignatures in Sedimentary Basin Fluids","authors":"Jennifer McIntosh,&nbsp;Henrik Drake,&nbsp;Ji-Hyun Kim,&nbsp;Anna Martini,&nbsp;Magdalena Osburn,&nbsp;Meera Shah,&nbsp;Bradley Stevenson,&nbsp;Grant Ferguson","doi":"10.1029/2026AV002557","DOIUrl":"https://doi.org/10.1029/2026AV002557","url":null,"abstract":"<p>The few studies of modern or ancient subsurface microbial communities beyond ∼100 m depth limit our view into the vast and complex deep terrestrial biosphere. In sedimentary systems, growing isotopic and molecular data sets of fluids, co-produced with hydrocarbons, provide an unprecedented opportunity to evaluate the depth-distribution of biosignatures and relate them to microbial biomass and their hydrogeologic context. Here, we compiled molecular and isotopic data sets of CO<sub>2</sub> and CH<sub>4</sub> with oil density (API gravity), microbial cell counts, and stable isotopes of formation waters for sedimentary basins globally to investigate the depth-distribution of biosignatures in produced fluids related to cell abundance, hydrologic properties, and burial/thermal histories of host rocks. The most robust signatures of microbial activity in CO<sub>2</sub>, CH<sub>4</sub>, and oil are apparent in the upper ∼1 km depth of sedimentary basins, co-occurring with relatively high biomass (&gt;10<sup>4</sup> cells/mL), permeability (&gt;10<sup>−16</sup> m<sup>2</sup>), and meteoric circulation. Small matrix pore throat sizes of sedimentary rocks beyond ∼1 km depth and in shallower confining units likely limit microbial habitation and transport, while in situ temperatures are cool enough for microbial activity up to several km depth. Our results refine and extend deeper previous estimates of the “biogenic floor,” above which microbial methanogenesis and oil biodegradation are identifiable in bulk isotopic biosignatures. We find significant microbial activity is required to leave biological signatures in the rock record, even where cells are present. We suggest that hydrologic factors (i.e., lower pore throat size and permeability) are inhibiting microbial life below ∼1 km in terrestrial sedimentary systems.</p>","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 6","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2026AV002557","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149048593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Detectability of Extreme CO2 Flux Events Using Atmospheric Observations 利用大气观测对极端CO2通量事件的可探测性
IF 7.4
AGU Advances Pub Date : 2026-09-26 DOI: 10.1029/2025AV002047
Ruixue Lei, Kristan L. Morgan, Deborah N. Huntzinger, Scot M. Miller
{"title":"The Detectability of Extreme CO2 Flux Events Using Atmospheric Observations","authors":"Ruixue Lei,&nbsp;Kristan L. Morgan,&nbsp;Deborah N. Huntzinger,&nbsp;Scot M. Miller","doi":"10.1029/2025AV002047","DOIUrl":"https://doi.org/10.1029/2025AV002047","url":null,"abstract":"<p>Climate events like droughts and floods perturb the carbon cycle and lead to extremes in CO<sub>2</sub> fluxes (i.e., net biosphere exchange or NBE). These extreme NBE events are important because they contribute to inter-annual variability in the global carbon cycle and may change in the future as climate changes. We develop synthetic experiments to evaluate how well atmospheric CO<sub>2</sub> observations can detect and quantify extreme NBE events across the globe. We focus on observations from the Orbiting Carbon Observatory 2 (OCO-2) and in situ atmospheric CO<sub>2</sub> observations, and we focus on NBE extremes that are in at least the fifth percentile globally, as simulated by a commonly-used terrestrial biosphere model. We find that OCO-2 data have enabled much better detection of extreme events globally compared to in situ data alone, and we can accurately identify up to 10%–30% of all model grid boxes that contain NBE extremes, depending on the region. However, our inverse modeling simulations tend to underestimate the magnitude of these extremes. We have greater success detecting extreme NBE events associated with anomalously hot and/or dry climate conditions compared to cold and/or wet climate conditions, and our success rate is also several times higher in global regions with high OCO-2 data density compared to regions with low data density. The results also vary widely with the inverse modeling setup. Overall, these results emphasize the salient role of data availability in detecting NBE extremes and highlight the potential of future planned missions like CO2M for improving event detection.</p>","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 6","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2025AV002047","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149048592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Abrupt Onset and Persistent Downstream Effects of Acid Rock Drainage on Rivers Across Northwest Arctic Alaska 阿拉斯加西北北极地区河流酸性岩石排水的突然发生和持续下游影响
IF 7.4
AGU Advances Pub Date : 2026-09-24 DOI: 10.1029/2026AV002407
Taylor G. Evinger, Jonathan A. O’Donnell, Michael P. Carey, Joshua C. Koch, Carson A. Baughman, Kenneth R. Hill, Rebecca J. Frei, Brett A. Poulin
{"title":"Abrupt Onset and Persistent Downstream Effects of Acid Rock Drainage on Rivers Across Northwest Arctic Alaska","authors":"Taylor G. Evinger,&nbsp;Jonathan A. O’Donnell,&nbsp;Michael P. Carey,&nbsp;Joshua C. Koch,&nbsp;Carson A. Baughman,&nbsp;Kenneth R. Hill,&nbsp;Rebecca J. Frei,&nbsp;Brett A. Poulin","doi":"10.1029/2026AV002407","DOIUrl":"https://doi.org/10.1029/2026AV002407","url":null,"abstract":"<p>Arctic streams and rivers are increasingly vulnerable to degradation from permafrost thaw that releases toxic elements via natural acid rock drainage. However, the spatial and temporal evolution of acid rock drainage on river chemistry across diverse mineral settings remain poorly constrained. Here, water chemistry in six watersheds across Alaska's Brooks Range (2022–2024) quantified the effects of acid rock drainage on river chemistry. Point-source acid rock drainage inputs (seeps and impaired tributaries) exhibited lower pH (median; pH: 3.2 and 6.9, respectively), higher sulfate (SO<sub>4</sub><sup>2−</sup>: 3,025 and 390 mg L<sup>−1</sup>, respectively), and elevated major and trace element concentrations (sum of 23 metals: 451 and 9.2 mg L<sup>−1</sup>, respectively), compared to upstream unimpaired mainstem rivers (pH = 8.3, SO<sub>4</sub><sup>2−</sup> = 68 mg L<sup>−1</sup>; metals = 0.1 mg L<sup>−1</sup>). Across watersheds, these inputs increased mainstem concentrations of major and trace elements (e.g., Fe, Al, Mn, Zn, Ni, Cd, and rare earth elements) and SO<sub>4</sub><sup>2−</sup>; however, mainstem river pH remained stable due to sufficient buffering. Within the Salmon River, concentrations of filter-passing and particulate fractions of constituents (SO<sub>4</sub><sup>2−</sup>, Fe, Zn, Ni, and Cd) were elevated ≤70-fold at &gt;100 km downstream of acidic inputs, documenting long-range transport. Temporal analyses of SO<sub>4</sub><sup>2−</sup> and Zn concentration (2015–2024) revealed abrupt increases (≤263%) in two watersheds between 2019 and 2020, aligning with antecedent record warm and snowy winter conditions. Collectively, our results document the abrupt onset of acid rock drainage across Arctic rivers with potential for long-range downstream transport and implications for biogeochemical cycles and ecological and human health.</p>","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 6","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2026AV002407","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149048062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Permafrost-Thaw Driven Acid-Rock Drainage Threatens Arctic Aquatic Ecosystems 永久冻融驱动的酸岩排水威胁着北极水生生态系统
IF 7.4
AGU Advances Pub Date : 2026-09-24 DOI: 10.1029/2026AV002822
E. K. Skierszkan
{"title":"Permafrost-Thaw Driven Acid-Rock Drainage Threatens Arctic Aquatic Ecosystems","authors":"E. K. Skierszkan","doi":"10.1029/2026AV002822","DOIUrl":"https://doi.org/10.1029/2026AV002822","url":null,"abstract":"&lt;p&gt;Scientists continue to document unexpected consequences of post-industrial global warming across Earth systems. In the current issue of &lt;i&gt;AGU Advances&lt;/i&gt;, Evinger et al. (&lt;span&gt;2026&lt;/span&gt;) documented abrupt onset of acid-rock drainage (ARD) in Arctic rivers affecting hundreds of kilometers of aquatic habitat. Their determined sampling efforts in remote wilderness regions of Alaska's Brooks Range have highlighted major degradation of previously pristine Arctic river networks because of ARD intensification.&lt;/p&gt;&lt;p&gt;Low-quality ARD is increasingly affecting Arctic water quality as thaw exposes sulfides previously trapped by permafrost to accelerated weathering. Water quality in natural acidic seepages within the Brooks Range and Canada's Yukon is comparable to some of the most severely mine-impacted ARD systems, with elevated metals concentrations and acidity that pose an immediate threat to aquatic ecosystems (Evinger et al., &lt;span&gt;2026&lt;/span&gt;; Skierszkan et al., &lt;span&gt;2026a&lt;/span&gt;).&lt;/p&gt;&lt;p&gt;The ARD process produces remarkable “rusting,” discoloration of impacted streams with bright orange or white precipitates. This rusting occurs as pH buffering downstream of ARD point sources drives precipitation of iron and aluminum-rich particles in the water column (Figure 1e). Arctic river rusting can also be caused by a different geochemical pathway, involving mobilization of iron in low-oxygen and neutral pH groundwater (Barker et al., &lt;span&gt;2023&lt;/span&gt;; Dial et al., &lt;span&gt;2026&lt;/span&gt;). This second pathway is likely less acutely toxic to receiving ecosystems, because of its lower toxic metal and acidity burden.&lt;/p&gt;&lt;p&gt;The study by Evinger et al. complements a growing body of work documenting emergent ARD affecting the global cryosphere. Earlier this year, we independently documented similarly abrupt ARD onset characterized by extreme water chemistry that drives vegetation dieback, river rusting, and metal mobilization in Yukon's Tombstone Waters Observatory, approximately 1,000 km east of the Brooks Range (Figure 1a; Skierszkan et al., &lt;span&gt;2026a&lt;/span&gt;). Both studies build on earlier reports of recent ARD onset in the Brooks Range and Alaska's North Slope (O’Donnell et al., &lt;span&gt;2024&lt;/span&gt;).&lt;/p&gt;&lt;p&gt;These related studies point to a widespread new outcome of permafrost degradation, which is concentrated in mountainous regions underlain by (meta)-sedimentary terranes spanning more than 1 million km&lt;sup&gt;2&lt;/sup&gt; in Alaska and northwest Canada (Figure 1a). Here, deep marine sedimentary rocks geologically enriched in sulfide minerals are exposed to accelerated weathering as permafrost retreats (Kwong et al., &lt;span&gt;2009&lt;/span&gt;; Lacelle et al., &lt;span&gt;2007&lt;/span&gt;; Skierszkan et al., &lt;span&gt;2026a&lt;/span&gt;). Exponential rises in sulfate concentrations across major northern rivers in recent decades highlight the breadth of this phenomenon (Figures 1b–1d) (Evinger et al., &lt;span&gt;2026&lt;/span&gt;; Skierszkan et al., &lt;span&gt;2026a&lt;/span&gt;; Tashiro et al., &lt;span&gt;2026&lt;/span&gt;; Toohe","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 6","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2026AV002822","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149048408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impactful Datasets in Earth, Space, and Environmental Sciences: Highlighting the Data That Transform Research 地球、空间和环境科学中有影响力的数据集:强调改变研究的数据
IF 7.4
AGU Advances Pub Date : 2026-09-21 DOI: 10.1029/2026AV002623
Joseph Gum, Graziella Caprarelli, Alberto Montanari, Brian Sedora, Shelley Stall, Mathew Biddle, Rachael Blake, Matt Jones, Elizabeth Joyner, Binita KC, Doug Newman, Doug Schuster, Andrea K. Thomer, Bruce Wilson, Lesley Wyborn, Ilse Aben, James Acker, Ebrahim Ahmadisharaf, Weston Anderson, Yosuke Aoki, Christina Arras, Ross Bagwell, Ashley Ballard, Lindsay Barbieri, Sylvain Barbot, Emily Becker, David Berghmans, Justine Blanford, Gil Bohrer, Tobias Braun, Ian Brosnan, Patrick Broxton, Brendan Byrne, Danica Linda Cantarero, Peiyu Cao, Sarah Carter, Rob Casey, Kerry Cawse-Nicholson, Daniel Cayan, K. Dana Chadwick, Kunal Chakraborty, Ernest Cisneros, Alexandru T. Codilean, James Crawford, Noel Cressie, David Crisp, Alfredo A. Cruz, Elisabetta D'Anastasio, Robert E. Daniell Jr., Fabien Darrouzet, Saswati Das, Kyle Frankel Davis, Ankur R. Desai, Alex de Sherbinin, Catia M. Domingues, Wenhao Dong, Kelsey Druken, Nelia W. Dunbar, Bethany Ehlmann, James S. Eldrett, Shane Elipot, Jing Fang, Nicolas Fernandez, Florence Fetterer, Alison Fritz, Jing Gao, Xueyuan Gao, Sarah Gille, Sven Gilliams, Peter H. Gleick, Christopher R. Hakkenberg, Jonathan B. Hanson, Henry C. Henson, Tracey Holloway, Candice Hopkins, Mark James Hopwood, Faisal Hossain, George J. Huffman, Nicole Jacobs, Daniel Jaffe, Dylan Jones, Apurva P. Joshi, Julie Kalansky, Leander Kallas, Nikita Kaushal, Endalkachew Kebede, Trevor F. Keenan, Gretchen Keppel-Aleks, Tae Kim, Fraser King, Marthe Klöcking, Wouter Knoben, Mark Koenig, Greg Kopp, Gerbrand Koren, Nicholas Kruskamp, Zachary Labe, Anthony Lanati, Matthias Lankhorst, Joshua Laughner, Oana Leahu-Aluas, Christine Lee, Laure Lefevre, Kerstin Lehnert, Einat Lev, Yuan Li, Zhong Liu, Avni Malhotra, Scott Marshall, Landon Marston, Ariadna Martin, Nick Marzolf, Paola Mazzoglio, Art Miller, Sanchit Minocha, Arpita Mondal, Jean-Paul Montagner, Laurent Montesi, Nils Moosdorf, James T. Morris, Md Golam Mostafa, Katelyn Mountjoy, Thiago V. M. do Nascimento, Kiwamu Nishida, Angus Nixon, Ceri Nunn, Martha Cary Eppes, Nasrin Mostafavi Pak, Gerard Gallardo i Peres, Dean Pesnell, Antonio Martínez Picar, Claire Porter, Prithviraj Pramanik, Sara C. Pryor, Marcelo Uriburu Quirno, Federico Rabuffi, Balaji Rajagopalan, Yuhan Rao, A. J. Reiss, Axel D. Renno, Siddharth Rout, Manabendra Saharia, Ricardo Sánchez-Murillo, Tatsuhiko Sato, Erin Satterthwaite, Anna Savage, Ted A. Scambos, Jacob Schaperow, Nirdesh Kumar Sharma, Christine A. Shields, Debjani Sihi, Elizabeth A. Silber, Terry Sohl, Sarath Suresh, James H. Swift, Zoltan Szantoi, Joao Teixeira, Glen Thackray, Anne Tillery, Mike Timmons, Marie Katrine Traun, Martin Vallée, Sara M. Vallejo-Bernal, José Manuel Vaquero, Voltaire A. Velazco, Isabel Wargowsky, Dominique Weis, Nina Welti, Thomas Westerhold, John W. Williams, Ann Windnagel, Ryan J. Woosley, Debra Wunch, Jingfeng Xiao, Ben Zaitchik, Enze Zhang, Xiaoyi Zhao, Li Zhen, Lin Zhiheng, Steven C. Bergman, Daniel Minisini
{"title":"Impactful Datasets in Earth, Space, and Environmental Sciences: Highlighting the Data That Transform Research","authors":"Joseph Gum,&nbsp;Graziella Caprarelli,&nbsp;Alberto Montanari,&nbsp;Brian Sedora,&nbsp;Shelley Stall,&nbsp;Mathew Biddle,&nbsp;Rachael Blake,&nbsp;Matt Jones,&nbsp;Elizabeth Joyner,&nbsp;Binita KC,&nbsp;Doug Newman,&nbsp;Doug Schuster,&nbsp;Andrea K. Thomer,&nbsp;Bruce Wilson,&nbsp;Lesley Wyborn,&nbsp;Ilse Aben,&nbsp;James Acker,&nbsp;Ebrahim Ahmadisharaf,&nbsp;Weston Anderson,&nbsp;Yosuke Aoki,&nbsp;Christina Arras,&nbsp;Ross Bagwell,&nbsp;Ashley Ballard,&nbsp;Lindsay Barbieri,&nbsp;Sylvain Barbot,&nbsp;Emily Becker,&nbsp;David Berghmans,&nbsp;Justine Blanford,&nbsp;Gil Bohrer,&nbsp;Tobias Braun,&nbsp;Ian Brosnan,&nbsp;Patrick Broxton,&nbsp;Brendan Byrne,&nbsp;Danica Linda Cantarero,&nbsp;Peiyu Cao,&nbsp;Sarah Carter,&nbsp;Rob Casey,&nbsp;Kerry Cawse-Nicholson,&nbsp;Daniel Cayan,&nbsp;K. Dana Chadwick,&nbsp;Kunal Chakraborty,&nbsp;Ernest Cisneros,&nbsp;Alexandru T. Codilean,&nbsp;James Crawford,&nbsp;Noel Cressie,&nbsp;David Crisp,&nbsp;Alfredo A. Cruz,&nbsp;Elisabetta D'Anastasio,&nbsp;Robert E. Daniell Jr.,&nbsp;Fabien Darrouzet,&nbsp;Saswati Das,&nbsp;Kyle Frankel Davis,&nbsp;Ankur R. Desai,&nbsp;Alex de Sherbinin,&nbsp;Catia M. Domingues,&nbsp;Wenhao Dong,&nbsp;Kelsey Druken,&nbsp;Nelia W. Dunbar,&nbsp;Bethany Ehlmann,&nbsp;James S. Eldrett,&nbsp;Shane Elipot,&nbsp;Jing Fang,&nbsp;Nicolas Fernandez,&nbsp;Florence Fetterer,&nbsp;Alison Fritz,&nbsp;Jing Gao,&nbsp;Xueyuan Gao,&nbsp;Sarah Gille,&nbsp;Sven Gilliams,&nbsp;Peter H. Gleick,&nbsp;Christopher R. Hakkenberg,&nbsp;Jonathan B. Hanson,&nbsp;Henry C. Henson,&nbsp;Tracey Holloway,&nbsp;Candice Hopkins,&nbsp;Mark James Hopwood,&nbsp;Faisal Hossain,&nbsp;George J. Huffman,&nbsp;Nicole Jacobs,&nbsp;Daniel Jaffe,&nbsp;Dylan Jones,&nbsp;Apurva P. Joshi,&nbsp;Julie Kalansky,&nbsp;Leander Kallas,&nbsp;Nikita Kaushal,&nbsp;Endalkachew Kebede,&nbsp;Trevor F. Keenan,&nbsp;Gretchen Keppel-Aleks,&nbsp;Tae Kim,&nbsp;Fraser King,&nbsp;Marthe Klöcking,&nbsp;Wouter Knoben,&nbsp;Mark Koenig,&nbsp;Greg Kopp,&nbsp;Gerbrand Koren,&nbsp;Nicholas Kruskamp,&nbsp;Zachary Labe,&nbsp;Anthony Lanati,&nbsp;Matthias Lankhorst,&nbsp;Joshua Laughner,&nbsp;Oana Leahu-Aluas,&nbsp;Christine Lee,&nbsp;Laure Lefevre,&nbsp;Kerstin Lehnert,&nbsp;Einat Lev,&nbsp;Yuan Li,&nbsp;Zhong Liu,&nbsp;Avni Malhotra,&nbsp;Scott Marshall,&nbsp;Landon Marston,&nbsp;Ariadna Martin,&nbsp;Nick Marzolf,&nbsp;Paola Mazzoglio,&nbsp;Art Miller,&nbsp;Sanchit Minocha,&nbsp;Arpita Mondal,&nbsp;Jean-Paul Montagner,&nbsp;Laurent Montesi,&nbsp;Nils Moosdorf,&nbsp;James T. Morris,&nbsp;Md Golam Mostafa,&nbsp;Katelyn Mountjoy,&nbsp;Thiago V. M. do Nascimento,&nbsp;Kiwamu Nishida,&nbsp;Angus Nixon,&nbsp;Ceri Nunn,&nbsp;Martha Cary Eppes,&nbsp;Nasrin Mostafavi Pak,&nbsp;Gerard Gallardo i Peres,&nbsp;Dean Pesnell,&nbsp;Antonio Martínez Picar,&nbsp;Claire Porter,&nbsp;Prithviraj Pramanik,&nbsp;Sara C. Pryor,&nbsp;Marcelo Uriburu Quirno,&nbsp;Federico Rabuffi,&nbsp;Balaji Rajagopalan,&nbsp;Yuhan Rao,&nbsp;A. J. Reiss,&nbsp;Axel D. Renno,&nbsp;Siddharth Rout,&nbsp;Manabendra Saharia,&nbsp;Ricardo Sánchez-Murillo,&nbsp;Tatsuhiko Sato,&nbsp;Erin Satterthwaite,&nbsp;Anna Savage,&nbsp;Ted A. Scambos,&nbsp;Jacob Schaperow,&nbsp;Nirdesh Kumar Sharma,&nbsp;Christine A. Shields,&nbsp;Debjani Sihi,&nbsp;Elizabeth A. Silber,&nbsp;Terry Sohl,&nbsp;Sarath Suresh,&nbsp;James H. Swift,&nbsp;Zoltan Szantoi,&nbsp;Joao Teixeira,&nbsp;Glen Thackray,&nbsp;Anne Tillery,&nbsp;Mike Timmons,&nbsp;Marie Katrine Traun,&nbsp;Martin Vallée,&nbsp;Sara M. Vallejo-Bernal,&nbsp;José Manuel Vaquero,&nbsp;Voltaire A. Velazco,&nbsp;Isabel Wargowsky,&nbsp;Dominique Weis,&nbsp;Nina Welti,&nbsp;Thomas Westerhold,&nbsp;John W. Williams,&nbsp;Ann Windnagel,&nbsp;Ryan J. Woosley,&nbsp;Debra Wunch,&nbsp;Jingfeng Xiao,&nbsp;Ben Zaitchik,&nbsp;Enze Zhang,&nbsp;Xiaoyi Zhao,&nbsp;Li Zhen,&nbsp;Lin Zhiheng,&nbsp;Steven C. Bergman,&nbsp;Daniel Minisini","doi":"10.1029/2026AV002623","DOIUrl":"https://doi.org/10.1029/2026AV002623","url":null,"abstract":"<p>The American Geophysical Union (AGU) announces the new living collection “Impactful Datasets in Earth, Space, and Environmental Sciences” which recognizes the creation and curation of datasets enabling research, analysis, and decision making beyond what is captured by traditional academic impact metrics. The collection highlights datasets through the dimensions of People, Planet, and Prosperity, and includes a curated set of nominated datasets and accompanying special collection of data papers. Developed with the Earth Science Information Partners (ESIP) community, the nomination and review process initially invites contributors from across research, operations, and public service, to nominate datasets important to their work, and then submit a data paper that expands upon the nomination text for inclusion in the special collection. This commentary highlights the rationale for the living collection, and the process of nomination. The collection serves as a living reference that strengthens data culture, supports reproducible geoscience, and provides enduring access to critical information for science and society.</p>","PeriodicalId":100067,"journal":{"name":"AGU Advances","volume":"7 6","pages":""},"PeriodicalIF":7.4,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2026AV002623","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149047963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信
小红书