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The Gravity Recovery And Climate Experiment - Follow On (GRACE-FO) satellite mission (2018-now) hosts the novel Laser Ranging Interferometer (LRI), a technology demonstrator for proving the feasibility of laser interferometry for…

空间物理 · 物理学 2023-08-09 Malte Misfeldt , Pallavi Bekal , Vitali Müller , Gerhard Heinzel

The forecasting skill of numerical weather prediction (NWP) models critically depends on the accurate initial conditions, also known as analysis, provided by data assimilation (DA). Traditional DA methods often face a trade-off between…

Accurate flight delay prediction is crucial for the secure and effective operation of the air traffic system. Recent advances in modeling inter-airport relationships present a promising approach for investigating flight delay prediction…

计算工程、金融与科学 · 计算机科学 2024-07-23 Qihui Zhu , Shenwen Chen , Tong Guo , Yisheng Lv , Wenbo Du

We explore the use of observed polar coronal holes (CHs) to constrain the flux distribution within the polar regions of global solar magnetic field maps in the absence of reliable quality polar field observations. Global magnetic maps,…

太阳与恒星天体物理 · 物理学 2022-06-29 Samuel J. Schonfeld , Carl J. Henney , Shaela I. Jones , Charles N. Arge

We discuss how some coronal mass ejections (CMEs) originating from the western limb of the Sun are associated with space weather effects such as solar energetic particles (SEPs), shock or geo-effective ejecta at Earth. We focus on the…

天体物理学 · 物理学 2009-05-18 N. Lugaz , I. I. Roussev , I. V. Sokolov

Aims. The space radiation environment conditions and the maximum expected coronal mass ejection (CME) speed are being assessed through the investigation of scaling laws between the peak proton flux and fluence of Solar Energetic Particle…

太阳与恒星天体物理 · 物理学 2024-10-02 Athanasios Papaioannou , Konstantin Herbst , Tobias Ramm , David Lario , Astrid M. Veronig

Accurate and continuous monitoring of Earth's gravity field is essential for tracking mass redistribution processes linked to climate variability, hydrological cycles, and geodynamic phenomena. While the GRACE and GRACE Follow-On (GRACE-FO)…

We develop a new Bayesian method for estimating white noise levels in CMB sky maps, and apply this algorithm to the 5-year WMAP data. We assume that the amplitude of the noise RMS is scaled by a constant value, alpha, relative to a…

宇宙学与河外天体物理 · 物理学 2009-08-24 N. E. Groeneboom , H. K. Eriksen , K. Gorski , G. Huey , J. Jewell , B. Wandelt

This work aims at the development of signal processing algorithms that can explore the potential of a PICOSEC-MicroMegas detector and offers the ability for online, precise timing. The PICOSEC-MicroMegas detector is a novel gaseous detector…

仪器与探测器 · 物理学 2021-12-30 Alexandra Kallitsopoulou

Decades of studies have suggested several criteria to detect Interplanetary coronal mass ejections (ICME) in time series from in-situ spacecraft measurements. Among them the most common are an enhanced and smoothly rotating magnetic field,…

Coronal mass ejections (CMEs) cause disturbances in the environment of the Earth when they arrive at the Earth. However, the prediction of the arrival of CMEs still remains a challenge. We have developed an interplanetary scintillation…

太阳与恒星天体物理 · 物理学 2019-04-17 Kazumasa Iwai , Daikou Shiota , Munetoshi Tokumaru , Kenichi Fujiki , Mitsue Den , Yûki Kubo

This paper investigates the prediction of vessels' arrival time to the pilotage area using multi-data fusion and deep learning approaches. Firstly, the vessel arrival contour is extracted based on Multivariate Kernel Density Estimation…

机器学习 · 计算机科学 2024-03-18 Xiaocai Zhang , Xiuju Fu , Zhe Xiao , Haiyan Xu , Xiaoyang Wei , Jimmy Koh , Daichi Ogawa , Zheng Qin

Understanding and forecasting the geoeffectiveness of a coronal mass ejection (CME) is crucial for protecting infrastructure in the near-Earth space environment and on Earth. In this study, we present a novel fusion model to forecast the…

太阳与恒星天体物理 · 物理学 2026-05-26 Zhaoxin Yan , Jason T. L. Wang , Haimin Wang , Harim Lee , Ju Jing , Yan Xu , Chunhui Xu , Vasyl Yurchyshyn

Both observation and theory reveal a close relationship between the kinematics of coronal mass ejections (CMEs) and the thermal energy release traced by the related soft X-ray (SXR) emission. The major problem of empirical studies of this…

太阳与恒星天体物理 · 物理学 2015-03-31 Carolina Salas-Matamoros , Karl-Ludwig Klein

Global-scale energy flow throughout Earth's magnetosphere (MSP) is catalyzed by processes that occur at Earth's magnetopause (MP). Magnetic reconnection is one process responsible for solar wind entry into and global convection within the…

The emergence of Agile Earth Observation Satellites (AEOSs) has marked a significant turning point in the field of Earth Observation (EO), offering enhanced flexibility in data acquisition. Concurrently, advancements in onboard satellite…

网络与互联网体系结构 · 计算机科学 2025-06-16 Antonio M. Mercado-Martínez , Beatriz Soret , Antonio Jurado-Navas

Air traffic control (ATC) is a safety-critical service system that demands constant attention from ground air traffic controllers (ATCos) to maintain daily aviation operations. The workload of the ATCos can have negative effects on…

机器学习 · 计算机科学 2023-07-25 Yutian Pang , Jueming Hu , Christopher S. Lieber , Nancy J. Cooke , Yongming Liu

As unmanned aircraft systems (UASs) continue to integrate into the U.S. National Airspace System (NAS), there is a need to quantify the risk of airborne collisions between unmanned and manned aircraft to support regulation and standards…

分布式、并行与集群计算 · 计算机科学 2021-10-26 Andrew Weinert , Marc Brittain , Ngaire Underhill , Christine Serres

The Correlated Component Analysis (CCA) allows us to estimate how the different diffuse emissions mix in CMB experiments, exploiting also complementary information from other surveys. It is especially useful to deal with possible additional…

天体物理学 · 物理学 2009-01-13 A. Bonaldi , S. Ricciardi , S. Leach , F. Stivoli , C. Baccigalupi , G. De Zotti

Studies for inferring the global characteristics of coronal mass ejections (CMEs) from its multipoint local in situ observations have been undertaken earlier, but there are limited studies utilizing measurements from multiple spacecraft…

太阳与恒星天体物理 · 物理学 2025-02-27 Anjali Agarwal , Wageesh Mishra