Geophysical Research Letters最新文献

Links Between Internal Variability and Forced Climate Feedbacks: The Importance of Patterns of Temperature Variability and Change

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl112774

Luke L. B. Davis, David W. J. Thompson, Maria Rugenstein, Thomas Birner

引用次数: 0

Seismoelectric Conversion at Poroelastic/Elastic Interfaces and the Role of Dielectric Permittivity: Experimental and Numerical Analysis

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl112994

Natael Bernardo, Victor Martins-Gomes, Clarisse Bordes, Daniel Brito

{"title":"Seismoelectric Conversion at Poroelastic/Elastic Interfaces and the Role of Dielectric Permittivity: Experimental and Numerical Analysis","authors":"Natael Bernardo, Victor Martins-Gomes, Clarisse Bordes, Daniel Brito","doi":"10.1029/2024gl112994","DOIUrl":"https://doi.org/10.1029/2024gl112994","url":null,"abstract":"Seismoelectric phenomena, caused by electrokinetic coupling between seismic and electromagnetic fields, have attracted significant interest in geological reservoir characterization for their sensitivity to pore-fluid contrasts. Consequently, most studies have focused on seismic-to-electromagnetic conversions at fluid/poroelastic and poroelastic/poroelastic interfaces. However, when investigating permeable zones in unfractured media, often associated with geothermal reservoirs, poroelastic/elastic interfaces must be considered. To address this, we conducted laboratory and numerical experiments using a container filled with quartz sand saturated with a NaCl solution, with one of five thin layers made of different materials (four elastic and one poroelastic) embedded within the sand. Our numerical simulations assume an elastic medium as poroelastic using limiting values for certain physical parameters. The results confirm that seismoelectric conversion occurs at poroelastic/elastic transitions, showing a strong agreement between experiments and simulations. Furthermore, we inferred that the amplitudes of electromagnetic waves generated at poroelastic/elastic interfaces are mainly controlled by contrasts of dielectric permittivity.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"261 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857730","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

Retrieval of Cloud Macro-Physical Properties Using theFY-4A Advanced Geostationary Radiation Imager (AGRI) and the Geostationary Interferometric Infrared Sounder (GIIRS)

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl109772

Bin Guo, Feng Zhang, Zhijun Zhao, Jinyu Guo, Wenwen Li

{"title":"Retrieval of Cloud Macro-Physical Properties Using theFY-4A Advanced Geostationary Radiation Imager (AGRI) and the Geostationary Interferometric Infrared Sounder (GIIRS)","authors":"Bin Guo, Feng Zhang, Zhijun Zhao, Jinyu Guo, Wenwen Li","doi":"10.1029/2024gl109772","DOIUrl":"https://doi.org/10.1029/2024gl109772","url":null,"abstract":"This study presents a novel approach for conducting all-day retrieval of cloud macro-physical properties (single-layer cloud phase, cloud top height, and cloud base height for optical thickness less than 10) using the Advanced Geostationary Radiation Imager (AGRI) and the Geostationary Interferometric Infrared Sounder (GIIRS) onboard the geostationary meteorological satellite Fengyun-4A based on machine learning methods. Model accuracy was compared after integrating ECMWF Reanalysis v5 (ERA-5) data, atmospheric temperature and moisture profiles, and GIIRS clear-column radiance. Results demonstrate that integrating GIIRS clear-column radiances can enhance the precision of cloud phase classification and the retrieval of cloud macro-physical properties. This effectively replaces the role of atmospheric temperature and humidity profiles, which are typically required for thermal infrared remote sensing retrieval. Moreover, the issue of delayed acquisition of ERA-5 atmospheric temperature and humidity profiles is mitigated, enabling near real-time and all-day retrieval of cloud macro-physical properties.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"147 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858001","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

Distribution of Interseismic Coupling Along the Maidan Fault in Tianshan Before the 2024 Mw 7.0 Wushi Earthquake

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl111472

Xiaohang Wang, Caijun Xu, Yangmao Wen, Xiong Zhao, Shuai Wang, Guangyu Xu

引用次数: 0

Study on the Positive Temperature Anomalies in East Antarctica During the Winter of 2018

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl111904

Yulong Shan, Jinfeng Ding, Xiaoqian Zhu, Wei Qi, Lei Liu, Xichuan Liu, Minghu Ding

引用次数: 0

Equinox Transitions of Thermosphere O/N2 and Meridional Circulation in the Northern Hemisphere as Observed by NASA's GOLD and ICON Missions

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl111810

Q. Gan, L. Qian, N. M. Pedatella, R. W. Eastes

{"title":"Equinox Transitions of Thermosphere O/N2 and Meridional Circulation in the Northern Hemisphere as Observed by NASA's GOLD and ICON Missions","authors":"Q. Gan, L. Qian, N. M. Pedatella, R. W. Eastes","doi":"10.1029/2024gl111810","DOIUrl":"https://doi.org/10.1029/2024gl111810","url":null,"abstract":"Leveraging the unique perspective enabled by Global-scale Observations of the Limb and Disk, we examined the characteristics of equinox transitions in the thermospheric column integrated ratio of atomic oxygen to molecular nitrogen (O/N2) in the Northern Hemisphere. We found that the timing of the O/N2 equinox transition from winter to summer or vice versa exhibits a progression with latitude, particularly, near spring equinox. The O/N2 equinox transition is far slower during spring compared to fall, leading to a remarkable seasonal asymmetry. Ionospheric Connection Explorer observed a prominent asymmetry in the summer-to-winter circulation in the middle to upper thermosphere, implying that the inter-hemispheric circulation plays a crucial role in the O/N2 equinox transition. Additionally, since the wave-driven meridional circulation in the lower thermosphere displays a seasonal asymmetry between the northward-to-southward and southward-to-northward transitions, we would anticipate that the O/N2 equinox transition is also influenced by the lower atmospheric forcing.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"7 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857732","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

Global Biomass Burning Emission Contributions to Ice Nucleating Particles

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl111881

Xucheng Zhao, Ke Jiang, Shuyu Ou'yang, Yaojie Li, Yang Wang, Jiandong Wang, Nan Zhao, Guofeng Shen

引用次数: 0

Superconducting Gravimeter Observations Show That a Satellite-Derived Snow Depth Image Improves the Simulation of the Snow Water Equivalent Evolution in a High Alpine Site

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl112483

F. Koch, S. Gascoin, K. Achmüller, P. Schattan, K.-F. Wetzel, C. Deschamps-Berger, M. Lehning, T. Rehm, K. Schulz, C. Voigt

{"title":"Superconducting Gravimeter Observations Show That a Satellite-Derived Snow Depth Image Improves the Simulation of the Snow Water Equivalent Evolution in a High Alpine Site","authors":"F. Koch, S. Gascoin, K. Achmüller, P. Schattan, K.-F. Wetzel, C. Deschamps-Berger, M. Lehning, T. Rehm, K. Schulz, C. Voigt","doi":"10.1029/2024gl112483","DOIUrl":"https://doi.org/10.1029/2024gl112483","url":null,"abstract":"The lack of accurate information on the spatiotemporal variations of snow water equivalent (SWE) in mountain catchments remains a key problem in snow hydrology and water resources management. This is partly because there is no sensor to measure SWE beyond local scale. At Mt. Zugspitze, Germany, a superconducting gravimeter senses the gravity effect of the seasonal snow, reflecting the temporal evolution of SWE in a few kilometers scale radius. We used this new observation to evaluate two configurations of the Alpine3D distributed snow model. In the default run, the model was forced with meteorological station data. In the second run, we applied precipitation correction based on an 8 m resolution snow depth image derived from satellite observations (Pléiades). The snow depth image strongly improved the simulation of the snowpack gravity effect during the melt season. This result suggests that satellite observations can enhance SWE analyses in mountains with limited infrastructure.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"88 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867443","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

Greenland Ice Sheet Elevation Change From CryoSat-2 and ICESat-2

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl110822

Nitin Ravinder, Andrew Shepherd, Inès Otosaka, Thomas Slater, Alan Muir, Lin Gilbert

引用次数: 0

How Much Convective Environment Subgrid Spatial Variability Is Missing Within Atmospheric Reanalysis Data Sets?

IF 5.2 1区地球科学

Geophysical Research Letters Pub Date : 2024-12-20 DOI: 10.1029/2024gl111856

Peter J. Marinescu, Susan C. van den Heever, Leah D. Grant, Jennie Bukowski, Itinderjot Singh

{"title":"How Much Convective Environment Subgrid Spatial Variability Is Missing Within Atmospheric Reanalysis Data Sets?","authors":"Peter J. Marinescu, Susan C. van den Heever, Leah D. Grant, Jennie Bukowski, Itinderjot Singh","doi":"10.1029/2024gl111856","DOIUrl":"https://doi.org/10.1029/2024gl111856","url":null,"abstract":"Convective cloud processes are sensitive to environmental conditions that vary on scales smaller than reanalysis data sets (sub-reanalysis scales). Convective environment variability within areas representative of reanalysis data sets is quantified using large-domain, high-resolution (∆x = 100 m) simulations of convective cloud systems throughout the tropics and subtropics. Even after removing locations of resolved clouds and precipitation, convective environment parameters vary significantly on these scales. For example, for half of the simulated data, 500 hPa relative humidity varies by ∼30% within a typical reanalysis area. Surface winds, convective available potential energy, and middle-tropospheric moisture are the most variable convective environment parameters for both continental and maritime regimes, while above-surface temperature and winds are the least variable. While high-resolution, sub-reanalysis-scale extrema are well-correlated with the reanalysis-area mean values, some of the most extreme convective environments can occur within regions with moderate reanalysis-area mean values, particularly for continental regions.","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"10 1","pages":""},"PeriodicalIF":5.2,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857735","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