Earth and Space Science最新文献_第4页

LFTNet: A Lightweight Multi-Scale Attention Network for Real-Time Seismic Event Detection and Phase Picking LFTNet：用于实时地震事件检测和相位提取的轻量级多尺度关注网络

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-08 DOI: 10.1029/2025EA004548

Jiashu Guo, Jiyu Tian, Yuming Guo, Hongxia Zhang

{"title":"LFTNet: A Lightweight Multi-Scale Attention Network for Real-Time Seismic Event Detection and Phase Picking","authors":"Jiashu Guo, Jiyu Tian, Yuming Guo, Hongxia Zhang","doi":"10.1029/2025EA004548","DOIUrl":"10.1029/2025EA004548","url":null,"abstract":"Although deep learning has advanced seismic analysis, accurately identifying seismic phases in noisy or complex waveform environments remains challenging. Many existing models struggle with high computational cost, reduced accuracy, and poor robustness under low signal-to-noise ratio (SNR) conditions, limiting their use in real-time applications. To address these issues, we propose LFTNet, a lightweight fully convolutional temporal network employing a multi-task learning framework to simultaneously perform seismic event detection and P- and S-phase picking. This joint optimization approach leverages shared contextual information across tasks, improving accuracy, reducing redundancy, and enhancing robustness under diverse seismic conditions. LFTNet features two novel modules: (a) the Residual Separable Depthwise Block (RSDB), a lightweight module for efficient local feature extraction; (b) the Multi-Scale Squeeze-Excitation Temporal Convolutional Network (MSSE-TCN), a multi-scale attention mechanism designed to accurately detect seismic phases by capturing long-range temporal dependencies. Experiments on the STEAD and INSTANCE data sets demonstrate that LFTNet achieves state-of-the-art performance, with F1 scores up to 98.6%/98.1% (P-phase/S-phase) on STEAD and 88.1%/84.4% on INSTANCE, while reducing model parameters by approximately 31% and increasing inference speed by about 24% compared to EQTransformer. LFTNet also maintains high accuracy and robustness under noisy conditions, providing a reliable solution for real-time earthquake detection and early warning.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025EA004548","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A Goniometric System for Photometric and Polarization Measurements of Planetary Regolith Analogs 一种用于行星风化层类似物的光度和偏振测量的角度测量系统

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-07 DOI: 10.1029/2024EA003979

Lizeth O. Magaña, David T. Blewett, Anna C. Martin, Goran Basic, Jordan Wiker, Adam Sniderman, Janine Newhook, Parvathy Prem, Brett W. Denevi, Hiroyuki Sato

{"title":"A Goniometric System for Photometric and Polarization Measurements of Planetary Regolith Analogs","authors":"Lizeth O. Magaña, David T. Blewett, Anna C. Martin, Goran Basic, Jordan Wiker, Adam Sniderman, Janine Newhook, Parvathy Prem, Brett W. Denevi, Hiroyuki Sato","doi":"10.1029/2024EA003979","DOIUrl":"10.1029/2024EA003979","url":null,"abstract":"The Planetary Surface Texture Laboratory at the Johns Hopkins University Applied Physics Laboratory is a facility for the study of the photometric and polarization behavior of regolith analogs using an ∼1.5-m-radius arc goniometer system. This system characterizes the photometric and polarization response of granular materials (planetary regolith analogs) at various illumination and viewing angles in the principal plane, enabling both forward and backward scattering observations at phase angles as low as 20 ± 5°. A polarimetric camera with linear polarizers at 0°, 45°, 90°, and 135° captures visible-wavelength images of samples illuminated by semi-collimated, unpolarized light. Imaging polarimetry and photometric studies are important for their ability to reveal sub-pixel information about the nature of planetary surfaces, in particular, texture-related properties such as porosity and roughness. We develop a calibration pipeline for the system and illustrate how the system can be utilized to understand the polarization and photometric response of planetary surface analog materials relevant to a range of airless Solar System bodies. We present an initial case study using a lunar regolith simulant, JSC-1A, illuminated with broadband white light and observed between phase angles of 20 ± 5° and 120 ± 5°. We find that the radiance reflected from JSC-1A decreases with increasing phase angle, while the degree of linear polarization increases, consistent with previous studies. This work illustrates the system's potential to enhance the interpretation of data sets such as those from the PolCam instrument on the Danuri lunar orbiter, and astronomical observations of asteroids.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024EA003979","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Suppression of Magnetopause Reconnection in the Presence of Cold Magnetospheric Plasma 冷磁层等离子体存在对磁层顶重联的抑制

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-07 DOI: 10.1029/2025EA004408

Krishna Khanal, Ying Zou, Gary P. Zank

{"title":"Suppression of Magnetopause Reconnection in the Presence of Cold Magnetospheric Plasma","authors":"Krishna Khanal, Ying Zou, Gary P. Zank","doi":"10.1029/2025EA004408","DOIUrl":"10.1029/2025EA004408","url":null,"abstract":"The temporal variability of magnetopause reconnection is an important aspect of solar wind magnetosphere coupling. Even under stable solar wind driving, reconnection can be triggered, modulated, or suppressed because of magnetic field and plasma conditions near the magnetopause boundary. We analyze a unique event in which a THEMIS satellite crosses the subsolar magnetopause three times within a <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>∼</mo>\u0000 </mrow>\u0000 <annotation> ${sim} $</annotation>\u0000 </semantics></math>5 min interval in the presence of a cold-ion population on the magnetospheric side of the boundary. During the first crossing, the satellite detects reconnection outflow and a D- shaped ion velocity distribution earthward from the boundary, indicating an active reconnection. The signatures disappear during the second crossing when the magnetospheric cold-ion density increases significantly and reappear during the third crossing when the magnetospheric density drops to a level comparable to that of the first crossing. The solar wind and magnetosheath conditions do not change much during the interval. The magnetospheric population is evidently associated with a plasmaspheric plume with considerable variation in density. According to the theory of mass loading, the presence of such a plume population results in the local Alfvén speed at the second crossing being <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>∼</mo>\u0000 </mrow>\u0000 <annotation> ${sim} $</annotation>\u0000 </semantics></math>40% smaller compared to the first and third crossings. However, the theory itself does not suggest suppression. We discuss possible suppression mechanisms considering the additional effects of the prevailing solar wind and local magnetopause conditions.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025EA004408","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Global Hotspots for Sea-Level Changes: Decadal Extremes and Uncertainties From CMIP6 Models 海平面变化的全球热点：来自CMIP6模式的年代际极值和不确定性

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-05 DOI: 10.1029/2025EA004402

Salah Basem Ajjur, Emanuele Di Lorenzo, Baylor Fox-Kemper

{"title":"Global Hotspots for Sea-Level Changes: Decadal Extremes and Uncertainties From CMIP6 Models","authors":"Salah Basem Ajjur, Emanuele Di Lorenzo, Baylor Fox-Kemper","doi":"10.1029/2025EA004402","DOIUrl":"10.1029/2025EA004402","url":null,"abstract":"Knowledge is limited regarding decadal extremes and uncertainties of sea-level change (SLC) at the regional scale, which necessitates the need for better understanding of these changes to enhance future coastal preparedness. To this end, we examined sea-level extremes for 23 World reference regions based on tide gauges (TGs) observations from 1950 to 2014. We then used these observations to evaluate the fidelity of climate models and earth system models (ESMs) participating in the Coupled Model Intercomparison Project Phase 6 (CMIP6), using trend analysis, correlation coefficient and Root Mean Square Error (RMSE) as metrics. Our findings show the spatial distribution of SLC varies between −10.0 and 6.52 mm/yr, with an area-weighted global average of 1.29 ± 0.32 mm/yr. Five regions display rapid increasing rates exceeding twice the global average: E. and C. North-America, N. Central-America, W. C. Asia, and S. E. Asia. Together, these regions constitute 26% of the total analyzed area. The CMIP6 simulations, especially ESMs, have a systematic underestimation of SLC, compared with TGs. We found poor agreement between CMIP6 simulations and TGs (weak correlation and larger RMSE) in subtropical North Atlantic regions and W. Central Asia. Our findings facilitate a multifactor hazard regional analysis that includes SLC alongside temperature, precipitation, and other parameters. It also identifies directions for future model development toward better detecting extremes and narrowing uncertainties in sea level simulations.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025EA004402","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Seismic Properties of Coastal and Inland Sabkhas: Implications for Static Corrections 沿海和内陆Sabkhas的地震特性：对静校正的影响

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-05 DOI: 10.1029/2024EA003813

A. Eleslambouly, M. Y. Ali, A. El-Husseiny, A. A. Al-Shuhail, F. Bouchalaa, S. M. Hanafy, J. Matsushima

{"title":"Seismic Properties of Coastal and Inland Sabkhas: Implications for Static Corrections","authors":"A. Eleslambouly, M. Y. Ali, A. El-Husseiny, A. A. Al-Shuhail, F. Bouchalaa, S. M. Hanafy, J. Matsushima","doi":"10.1029/2024EA003813","DOIUrl":"10.1029/2024EA003813","url":null,"abstract":"Sabkha environments are a prevalent topographic feature in arid coastal areas. Along the Arabian Gulf, sabkhas overlie substantial hydrocarbon reservoirs and exhibit intricate lithological characteristics and an extremely shallow water table. These factors contribute to elevated seismic velocities and signal distortion. Static correction, a crucial initial step in seismic reflection processing, is employed to mitigate the impact of shallow surface layers. In this study, we investigate the variations in seismic properties along the uppermost part of mature and developing sabkhas. We employed high-resolution seismic experiments with geophone spacing of 10 cm to explore the upper tens of centimeters. Conventional surveys with a 2 m spacing complement this approach to investigate deeper layers. Both sabkhas exhibit a unique characteristic of a partially saturated zone, which affects the seismic velocity, leading to lower velocities and consequently influencing the accuracy of the static correction. The high-resolution surveys demonstrated superior accuracy to conventional approaches in determining the top of the partial saturation zone and hardground layer, hence resulting in a more reliable velocity delineation. Moreover, velocities derived from conventional, replacement, and tomogram approaches resulted in unreliable static corrections in mature coastal sabkha compared with developing inland sabkha, attributed to the considerable geological complexity that is characteristic of mature coastal sabkha environments. Carrying out a high-resolution seismic survey in sabkha environments is therefore necessary to mitigate near-surface velocity effects.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024EA003813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144999031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Tracking Atmospheric River Impacts on Greenland Climate and Glacier Hydrology Over the Past Decade, 2010–2019 2010-2019年近十年大气河流对格陵兰气候和冰川水文的影响

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-05 DOI: 10.1029/2025EA004542

Jingming Li, Wenhao Li, C. K. Shum, Feng Ming, Jintao Lei, Chuanyi Zou

{"title":"Tracking Atmospheric River Impacts on Greenland Climate and Glacier Hydrology Over the Past Decade, 2010–2019","authors":"Jingming Li, Wenhao Li, C. K. Shum, Feng Ming, Jintao Lei, Chuanyi Zou","doi":"10.1029/2025EA004542","DOIUrl":"10.1029/2025EA004542","url":null,"abstract":"Atmospheric Rivers (ARs) play an important role in influencing polar climate systems and glacier hydrology, making their study essential for understanding climate change impacts in these sensitive regions. With the increasing frequency of extreme weather events, the polar ice and snow environment is being significantly affected. This study analyzes AR over Greenland, focusing on its spatiotemporal distribution, phased aggregation, migration characteristics, and implications for Greenland deformation. We examine Greenland's climate elements (sensible heat flux, specific humidity, surface air temperature), surface mass balance (SMB) and load deformation, assessing their correlation with AR. We quantify the frequency, duration, and distribution of AR landfalls in Greenland from 2010 to 2019, evaluating their impact on climate patterns and SMB. Results indicate ARs are concentrated in central-western, south-western (SW), and south-eastern (SE) Greenland, with similar concentrations in sensible heat flux, specific humidity, surface air temperature, and AR precipitation deformation during events. We estimate AR landfalls significantly impact SMB, contributing over 15% annually, with typical impacts ranging from 25% to 30%. AR landfalls have approximately double the impact on SMB, observable in monthly SMB variations, including seasonal factors, such as the extreme melt event in summer 2012. The influence of AR on Greenland's glacial hydrology is increasing, associated with heat transfer mechanisms that enhance accumulation/melt processes on the Greenland Ice Sheet, affecting SMB.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025EA004542","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144999020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

3D Reconstruction of Equatorial Plasma Bubbles Using EOF and GNSS Radio Occultation Data From MSS-1 and COSMIC-2 利用MSS-1和COSMIC-2的EOF和GNSS射电掩星数据重建赤道等离子体气泡

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-05 DOI: 10.1029/2024EA003885

Jinhuan Du, Zhe Yang, Peng Guo, Mengjie Wu, Juanjuan Dong, Honggang Li, Feifei Zuo

{"title":"3D Reconstruction of Equatorial Plasma Bubbles Using EOF and GNSS Radio Occultation Data From MSS-1 and COSMIC-2","authors":"Jinhuan Du, Zhe Yang, Peng Guo, Mengjie Wu, Juanjuan Dong, Honggang Li, Feifei Zuo","doi":"10.1029/2024EA003885","DOIUrl":"10.1029/2024EA003885","url":null,"abstract":"This study presents initial scientific insights obtained from Radio Occultation (RO) observations of ionospheric irregularities and scintillation at equatorial and low latitudes collected by the Macau Science Satellite-1 (MSS-1). With a specific focus on the South Atlantic Anomaly (SAA) region, an Empirical Orthogonal Function (EOF) methodology is introduced for reconstructing three-dimensional (3D) equatorial plasma bubbles (EPB). This method utilizes the first 3 months of RO data from MSS-1 in conjunction with data from the Constellation Observing System for Meteorology, Ionosphere and Climate follow-on mission (COSMIC-2). The analysis assesses approximately 37,232 MSS-1 RO profiles. The results highlight that the initial two EOF components effectively capture the climatic characteristics of EPB during the period from June to August in 2023. The reconstructed EPB map reveals promising insights, demonstrating a distinct pattern influenced by local time (LT), latitude, and altitude in the occurrence of ionospheric irregularities. MSS-1 observations hold potential as a valuable addition to GNSS-RO constellations such as COSMIC-2, enhancing the comprehension of equatorial and low-latitude ionospheric irregularities through improved resolutions in LT and vertical sounding.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024EA003885","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144999029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

An Integrated Sensor Network and Data Driven Approach to Satellite Remote Sensing of Dissolved Organic Matter 一种集成传感器网络和数据驱动的溶解有机质卫星遥感方法

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-03 DOI: 10.1029/2024EA004048

Dulcinea M. Avouris, Erin L. Hestir, Jacob Fleck, Jeffrey A. Hansen, Brian A. Bergamaschi

{"title":"An Integrated Sensor Network and Data Driven Approach to Satellite Remote Sensing of Dissolved Organic Matter","authors":"Dulcinea M. Avouris, Erin L. Hestir, Jacob Fleck, Jeffrey A. Hansen, Brian A. Bergamaschi","doi":"10.1029/2024EA004048","DOIUrl":"10.1029/2024EA004048","url":null,"abstract":"Traditional remote sensing retrieval models for water quality have historically relied on limited, localized data sets due to the prohibitive costs of extensive field campaigns and logistical challenges of collecting match-up data with satellite overpasses. As a result, these models often lack generalizability across seasons, tides, and sites. Furthermore, small field data sets limit the utility of modern machine learning techniques to advance remote sensing retrieval models. In situ optical sensors deployed in a sensor network to continuously monitor larger water bodies can drastically increase the number of measurements, providing the opportunity to develop new approaches for building robust remote sensing retrieval models by leveraging both remote sensing data and in situ networks as an integrated monitoring system. This study leverages a large “ground-to-space” sensor network that combines an in situ optical sensor network with satellite-based remote sensing to overcome these limitations. Utilizing a large-scale data set from the U.S. Geological Survey's Sacramento—San Joaquin River Delta monitoring network, of dissolved organic matter fluorescence measurements, and remote sensing data from the European Space Agency's Sentinel-2A and -2B satellites, this study implemented a data driven approach for dissolved organic matter models. The data set, consisting of 982 samples collected between 2018 and 2021 was used to train and validate a random forest model (R2 = 0.76, RMSE = 6.1 Quinine Sulfate Equivalents), with demonstrated applicability across diverse site conditions, tidal stages, and seasons. This work provides a scalable solution to address critical challenges in water quality monitoring and offers a replicable framework for global water quality management.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024EA004048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Inversion of Global Thermospheric Density Map Based on Satellite Measurements Using Deep Learning RFR Network 基于深度学习RFR网络的卫星测量反演全球热层密度图

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-01 DOI: 10.1029/2025EA004426

Kun Zhang, Fengsi Wei, Yanshi Huang, Pingbing Zuo, Mengfei Sun, Shijin Wang, Hao Yang, Jinlong Ji, Huan Shi, Liping Lv, Zehao Chen

{"title":"Inversion of Global Thermospheric Density Map Based on Satellite Measurements Using Deep Learning RFR Network","authors":"Kun Zhang, Fengsi Wei, Yanshi Huang, Pingbing Zuo, Mengfei Sun, Shijin Wang, Hao Yang, Jinlong Ji, Huan Shi, Liping Lv, Zehao Chen","doi":"10.1029/2025EA004426","DOIUrl":"10.1029/2025EA004426","url":null,"abstract":"The estimation error of neutral mass density is a major source of uncertainty in calculating thermospheric drag, which is the primary non-gravitational perturbation affecting satellites in low Earth orbit. Many empirical models and physics-based models are commonly used to forecast the thermospheric density, but significant deviations might occur during extreme space weather events. The inversion approach based on observation data may provide better predictive capability. Given the limited thermospheric observational resources, this study aims to reconstruct the global thermospheric pattern using sparse data and a neural network. In this paper, we develop a global thermospheric density map inversion model based on the Recurrent Feature Reasoning (RFR) neural network (RFR-Net), which treats the inversion of global density maps from limited satellite data as an image inpainting problem. To evaluate the effectiveness of the proposed method, sparse satellite observations (covering only 0.19% of the global grid) were input to the trained model. Results indicate that RFR-Net enables the generation of global thermospheric density maps and effectively captures their temporal variations. Furthermore, we compare RFR-Net's performance with traditional models. During quiet periods, RFR-Net achieves comparable accuracy to other models, with all exhibiting low errors. Notably, during geomagnetic storms, RFR-Net demonstrates significantly higher accuracy than other models.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025EA004426","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

From Tape Reels to Global Access: A History and Future Vision of NASA's Scientific Data Management 从磁带卷到全球访问：NASA科学数据管理的历史和未来愿景

IF 2.6 3区地球科学

Earth and Space Science Pub Date : 2025-09-01 DOI: 10.1029/2025EA004413

Kaylin Bugbee, Rahul Ramachandran

{"title":"From Tape Reels to Global Access: A History and Future Vision of NASA's Scientific Data Management","authors":"Kaylin Bugbee, Rahul Ramachandran","doi":"10.1029/2025EA004413","DOIUrl":"10.1029/2025EA004413","url":null,"abstract":"Since its creation in the late 1950s, NASA has collected space science data and information that span astrophysics, Earth science, planetary science, heliophysics, and biological and physical sciences. While these data were critical to NASA's objective of expanding human knowledge of space, the early days of scientific data and information management were characterized by a fragmented and under-resourced approach. Information management practices typically lacked standardization, comprehensive archival routines, and adequate funding. This paper reviews NASA's scientific data management journey, from its early, inefficient stages to its current status as a widely adopted process focused on open access. By systematically reviewing a series of National Academy of Science reports and other relevant white papers from the early 1980s to the present, this study identifies common themes and persistent challenges related to the scientific data management lifecycle, data accessibility and reusability, advancing technology trends, and policy and collaboration. The paper highlights significant improvements in data management at NASA, including data standardization, infrastructure development, and the adoption of open data policies. Finally, the paper considers the future of scientific data management at NASA, emphasizing the need for holistic knowledge assimilation, faster integration processes, and the critical role of scientific data stewardship in the age of artificial intelligence.","PeriodicalId":54286,"journal":{"name":"Earth and Space Science","volume":"12 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025EA004413","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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