Geophysical Research Letters最新文献_第5页

Divergent Impacts of Precipitation Regimes on Autumn Phenology in the Northern Hemisphere Mid‐ to High‐Latitudes 北半球中高纬度地区降水制度对秋季物候的不同影响

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-30 DOI: 10.1029/2025gl117589

Yangjing Nie, Zhaofei Wu, Shouzhi Chen, Yue Xu, Yufeng Gong, Hongzhou Wang, Yi Xiao, Zunchi Liu, Yongshuo H. Fu

{"title":"Divergent Impacts of Precipitation Regimes on Autumn Phenology in the Northern Hemisphere Mid‐ to High‐Latitudes","authors":"Yangjing Nie, Zhaofei Wu, Shouzhi Chen, Yue Xu, Yufeng Gong, Hongzhou Wang, Yi Xiao, Zunchi Liu, Yongshuo H. Fu","doi":"10.1029/2025gl117589","DOIUrl":"https://doi.org/10.1029/2025gl117589","url":null,"abstract":"Climate change has altered precipitation regimes and shifted the end of the vegetation growing season (end of the season [EOS]), with consequences for terrestrial carbon and water cycles. However, the impacts of precipitation regimes, that is, total precipitation (Ptotal) and precipitation frequency (Pfreq), on EOS remain unclear. Using satellite‐derived phenology data from 1982 to 2020, we examined the effects of precipitation regimes on EOS across the mid‐ to high‐latitudes of the Northern Hemisphere. We found that both increased Ptotal and decreased Pfreq delayed EOS, with the effect of reduced Pfreq likely mediated through increased maximum temperature and elevated soil moisture resulting from higher precipitation intensity. We further developed a process‐based autumn phenology model that incorporated the effect of Pfreq, which significantly improved model performance. These findings underscore the influence of precipitation regimes on EOS and highlight the need to account for both precipitation frequency and intensity when projecting vegetation carbon uptake under future climate scenarios.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"8 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145195085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantifying Uncertainty in Time Averages of the Geomagnetic Dipole 量化地磁偶极子时间平均的不确定性

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-30 DOI: 10.1029/2025gl118741

Bruce Buffett, Margaret Avery

引用次数: 0

Inconsistencies in GRACE‐Based Groundwater Storage Estimation—A Call for a Proper Use of Land Surface Models 基于GRACE的地下水储量估算的不一致性——对正确使用地表模型的呼吁

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-29 DOI: 10.1029/2025gl119197

Augusto Getirana, Sujay Kumar, Matthew Rodell

引用次数: 0

Rapid Increase in Extreme Hourly Precipitation in Recent Two Decades in the Tibetan Plateau and Its Large‐Scale Drivers

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-29 DOI: 10.1029/2025gl117722

Rouyi Jiang, Xingwen Jiang, Lun Li, Ping Lu

{"title":"Rapid Increase in Extreme Hourly Precipitation in Recent Two Decades in the Tibetan Plateau and Its Large‐Scale Drivers","authors":"Rouyi Jiang, Xingwen Jiang, Lun Li, Ping Lu","doi":"10.1029/2025gl117722","DOIUrl":"https://doi.org/10.1029/2025gl117722","url":null,"abstract":"Although extreme hourly precipitation (EHP) over the Tibetan Plateau (TP) has received growing attention, its spatiotemporal variability and the underlying mechanisms governing regional responses remain unclear. This study explores the spatiotemporal characteristics of EHP over its eastern edge during the summers of 1988–2023. A trend reversal is identified: the amount, intensity and frequency of EHP all decreased during 1988–2003 but increased in 2004–2023, with the amount and frequency exhibiting significant rapid growth. These changes are linked to the co‐evolution of the South Asian High (SAH) and Western Pacific Subtropical High (WPSH). Their joint expansion enhances EHP via favorable dynamical and thermodynamic configurations, including intensified upper‐level divergence, lower‐level convergence, deep ascending motion, convective instability, 500 hPa specific humidity, and moisture flux convergence. Spatially, SAH expansion primarily promotes EHP over the northeastern TP via thermodynamic processes, whereas WPSH expansion mainly intensifies EHP over the southeastern TP through dynamical forcing.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"34 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potential and Limitations of Strontium Isotopic Fingerprinting in Wood 木材中锶同位素指纹图谱的潜力和局限性

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-29 DOI: 10.1029/2025gl117556

Ulf Büntgen, Filip Oulehle, Clive Oppenheimer, Jan Svoboda, Yulia V. Erban Kochergina, Michal Rybníček, Tomas Kolar, Martin Novák, Michael Kempf, Mirek Trnka

{"title":"Potential and Limitations of Strontium Isotopic Fingerprinting in Wood","authors":"Ulf Büntgen, Filip Oulehle, Clive Oppenheimer, Jan Svoboda, Yulia V. Erban Kochergina, Michal Rybníček, Tomas Kolar, Martin Novák, Michael Kempf, Mirek Trnka","doi":"10.1029/2025gl117556","DOIUrl":"https://doi.org/10.1029/2025gl117556","url":null,"abstract":"While the isotopic composition of strontium (87Sr/86Sr) is frequently used in archeological and environmental provenience studies, it remains unclear how bioavailable Sr in organic matter and the food chain reflects bedrock sources. Here, we present Sr isotopic measurements of 24 soil and 120 wood samples from four central European forests with variable basement geology. While 87Sr/86Sr values in bedrock (0.7035–0.7441) and soil (0.7043–0.7552) have a considerable span, wood 87Sr/86Sr values across sites have a much smaller range (0.7041–0.7245), which is closer to the large‐scale atmospheric Sr signature in precipitation (0.7118). Comparable 87Sr/86Sr ratios for different tree species, cambial ages and root systems suggest that bioavailable Sr in wood is little affected by biotic factors. Given the strength of the atmospheric Sr signal we identify, archeological, environmental and forensic fingerprinting should consider high‐resolution spatial isoscape modeling, for which this study provides a baseline for central Europe.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"1 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Does Ice Cover Cap Evaporation in Large Lakes? 大型湖泊的冰盖会蒸发吗？

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-27 DOI: 10.1029/2025GL117112

Eric J. Anderson, Andrew D. Gronewold

引用次数: 0

A Theory on Regional Impacts of Global Warming 全球变暖的区域影响理论

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-27 DOI: 10.1029/2025GL118808

Elfatih A. B. Eltahir, Yeon-Woo Choi

引用次数: 0

Impact of Groundwater Head Changes on the Permeability of Bedrock Aquifer-Aquitard Systems 地下水水头变化对基岩含水层-含水层系统渗透率的影响

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-27 DOI: 10.1029/2025GL117493

Xin Liao, Ming-Hao Liu, Zhiqiang Fan, Chen-Yue Hu, Jiang Wang, Yun Shi

{"title":"Impact of Groundwater Head Changes on the Permeability of Bedrock Aquifer-Aquitard Systems","authors":"Xin Liao, Ming-Hao Liu, Zhiqiang Fan, Chen-Yue Hu, Jiang Wang, Yun Shi","doi":"10.1029/2025GL117493","DOIUrl":"https://doi.org/10.1029/2025GL117493","url":null,"abstract":"<p>Understanding how groundwater level changes affect the permeability of bedrock aquifer-aquitard systems is important for groundwater management, yet this relationship remains poorly understood. This study focuses on Tangshan in the northeastern North China Plain, utilizing tidal response analysis to investigate the dynamic interplay between groundwater level trends and permeability variations in bedrock aquifer-aquitard systems. High-frequency groundwater level data from two monitoring wells were employed to reveal a significant positive correlation: rising groundwater head leads to increased permeability of the bedrock aquifer-aquitard system, primarily due to adjustments in groundwater head. This research provides direct evidence that both climate variability and human activities can influence bedrock aquifer-aquitard permeability through changes in the groundwater head. The findings highlight the importance of integrating models of dynamic permeability induced by hydrological processes into groundwater resource management frameworks and hazard assessments, particularly in regions experiencing groundwater level recovery, such as the North China Plain.</p>","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"52 19","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025GL117493","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145146941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Have Impacts of Intense Arctic Cyclones on Summer Sea Ice Reached a Maximum? 强烈的北极气旋对夏季海冰的影响是否达到了最大值？

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-27 DOI: 10.1029/2025GL117848

C. L. Mundi, T. S. L’Ecuyer, A. K. DuVivier

引用次数: 0

Entropy-Guided Multivariate Groundwater Network Design for Multi-Source Data Assimilation Under Observational Uncertainty 观测不确定性下多源数据同化的熵引导多元地下水网设计

IF 4.6 1区地球科学

Geophysical Research Letters Pub Date : 2025-09-27 DOI: 10.1029/2025GL117466

Mingxu Cao, Zhenxue Dai, Junjun Chen

{"title":"Entropy-Guided Multivariate Groundwater Network Design for Multi-Source Data Assimilation Under Observational Uncertainty","authors":"Mingxu Cao, Zhenxue Dai, Junjun Chen","doi":"10.1029/2025GL117466","DOIUrl":"https://doi.org/10.1029/2025GL117466","url":null,"abstract":"<p>Observational uncertainty poses major challenges to groundwater model calibration. As the primary source of information for multi-source data assimilation, monitoring network design is critical for accurately characterizing subsurface dynamics. Under limited measurement accuracy or cost constraints, monitoring networks must remain robust to observational errors. This study develops a multivariate network design framework that quantifies the uncertainty of multicomponent responses using joint entropy and employs deep learning to accelerate computations. Case study results show that the framework reliably estimates non-Gaussian permeability fields even under high-noise observations. The calibrated reactive transport model demonstrates strong capability in reproducing historical data and predicting system responses. This work advances the understanding of multi-source data fusion and supports the development of groundwater monitoring networks under observational uncertainty. Moreover, the proposed approach can be extended to the design of geophysical survey lines that integrate geophysical data.</p>","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"52 19","pages":""},"PeriodicalIF":4.6,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025GL117466","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145146975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0