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We have constructed a Bayesian neural network able of retrieving tropospheric temperature profiles from rotational Raman-scatter measurements of nitrogen and oxygen and applied it to measurements taken by the RAman Lidar for Meteorological…

Atmospheric and Oceanic Physics · Physics 2023-04-12 Ghazal Farhani , Giovanni Martucci , Tyler Roberts , Alexander Haefele , Robert J. Sica

We propose a new method for retrieving the atmospheric number density profile in the lower thermosphere, based on the X-ray Earth occultation of the Crab Nebula with the Hard X-ray Modulation Telescope (\emph{Insight}-HXMT) Satellite. The…

Earth and Planetary Astrophysics · Physics 2023-05-08 Daochun Yu , Haitao Li , Baoquan Li , Mingyu Ge , Youli Tuo , Xiaobo Li , Wangchen Xue , Yaning Liu

We present new measurements of the vertical density profile of the Earth's atmosphere at altitudes between 70 and 200 km, based on Earth occultations of the Crab Nebula observed with the X-ray Imaging Spectrometer onboard Suzaku and the…

Machine learning (ML) models have become increasingly valuable in weather forecasting, providing forecasts that not only lower computational costs but often match or exceed the accuracy of traditional numerical weather prediction (NWP)…

Atmospheric and Oceanic Physics · Physics 2024-09-12 Xiaohui Zhong , Lei Chen , Xu Fan , Wenxu Qian , Jun Liu , Hao Li

Low-cost air quality sensors (LCS) provide a practical alternative to expensive regulatory-grade instruments, making dense urban monitoring networks possible. Yet their adoption is limited by calibration challenges, including sensor drift,…

Machine Learning · Computer Science 2026-04-24 Arindam Sengupta , Tony Bush , Ben Marner , Jose Miguel Pérez , Soledad Le Clainche

Recent observations in emission, extinction, and polarisation have at least partially invalidated most of the astronomical standard grain models for the diffuse ISM. Moreover, lab measurements on interstellar silicate analogues have shown…

This study explores the use of historical data from Global Navigation Satellite System (GNSS) scintillation monitoring receivers to predict the severity of amplitude scintillation, a phenomenon where electron density irregularities in the…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Sultan Halawa , Maryam Alansaari , Maryam Sharif , Amel Alhammadi , Ilias Fernini

There has been growing interest in extending the coverage of ground PM2.5 monitoring networks based on satellite remote sensing data. With broad spatial and temporal coverage, satellite based monitoring network has a strong potential to…

Applications · Statistics 2018-09-14 Yikai Wang , Xuefei Hu , Howard Chang , Lance Waller , Jessica Belle , Yang Liu

Surveys for transient and variable phenomena can be confounded by the presence of extrinsic variability such as refractive interstellar scintillation (RISS). We have developed an all-sky model for RISS which can predict variability on a…

Astrophysics of Galaxies · Physics 2019-07-26 P. J. Hancock , E. G. Charlton , J-P. Macquart , N. Hurley-Walker

Marine litter poses significant threats to marine and coastal environments, with its impacts ever-growing. Remote sensing provides an advantageous supplement to traditional mitigation techniques, such as local cleaning operations and trawl…

Computer Vision and Pattern Recognition · Computer Science 2023-06-28 Bianca Matos de Barros , Douglas Galimberti Barbosa , Cristiano Lima Hackmann

This paper presents a novel mathematical framework for phase unwrapping in three-dimensional interferometric ISAR (3D InISAR) imaging. The approach works on a scatterer-by-scatterer basis and does not rely on any spatial continuity…

Signal Processing · Electrical Eng. & Systems 2026-05-28 Matteo Pardi , Francesco Mancuso , Elisa Giusti , Marco Martorella

Low-cost particulate matter sensors (LCS) are an important source of air quality data, improving the spatial and temporal resolution of data gathered by sparsely placed official monitoring stations. Their readings, however, are subject to…

Atmospheric and Oceanic Physics · Physics 2024-03-15 Robert Blaga

Accurate prediction of global sea surface temperature at sub-seasonal to seasonal (S2S) timescale is critical for drought and flood forecasting, as well as for improving disaster preparedness in human society. Government departments or…

Atmospheric and Oceanic Physics · Physics 2024-09-10 Longhao Wang , Xuanze Zhang , L. Ruby Leung , Francis H. S. Chiew , Amir AghaKouchak , Kairan Ying , Yongqiang Zhang

With the development of ever-improving telescopes capable of observing exoplanet atmospheres in greater detail and number, there is a growing demand for enhanced 3D climate models to support and help interpret observational data from space…

Earth and Planetary Astrophysics · Physics 2025-08-15 Alexander Plaschzug , Amit Reza , Ludmila Carone , Sebastian Gernjak , Christiane Helling

Monitoring the fuel moisture content (FMC) of vegetation is crucial for managing and mitigating the impact of wildland fires. The combination of in situ FMC observations with numerical weather prediction (NWP) models and satellite…

Spacecraft entering Mars require precise navigation algorithms capable of accurately estimating the vehicle's position and velocity in dynamic and uncertain atmospheric environments. Discrepancies between the true Martian atmospheric…

Machine Learning · Computer Science 2024-05-22 Felipe Giraldo-Grueso , Andrey A. Popov , Renato Zanetti

Total solar irradiance and UV spectral solar irradiance have been monitored since 1978 through a succession of space missions. This is accompanied by the development of models aimed at replicating solar irradiance by relating the…

Solar and Stellar Astrophysics · Physics 2015-07-07 K. L. Yeo , W. T. Ball , N. A. Krivova , S. K. Solanki , Y. C. Unruh , J. Morrill

Due to computational constraints, running global climate models (GCMs) for many years requires a lower spatial grid resolution (${\gtrsim}50$ km) than is optimal for accurately resolving important physical processes. Such processes are…

Land surface temperature (LST) is vital for land-atmosphere interactions and climate processes. Accurate LST retrieval remains challenging under heterogeneous land cover and extreme atmospheric conditions. Traditional split window (SW)…

Atmospheric and Oceanic Physics · Physics 2025-09-08 Tian Xie , Huanfeng Shen , Menghui Jiang , Juan-Carlos Jiménez-Muñoz , José A. Sobrino , Huifang Li , Chao Zeng

In 2019 the NICER collaboration published the first mass and radius inferred for PSR J0030+0451, thanks to NICER observations, and consequent constraints on the equation of state characterising dense matter. Two independent analyses found a…