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Quantifying the vertical distribution of atmospheric aerosols is crucial for estimating their impact on the Earth energy budget and climate, improving forecast of air pollution in cities, and reducing biases in the retrieval of greenhouse…

Atmospheric and Oceanic Physics · Physics 2019-08-19 Zhao-Cheng Zeng , Sihe Chen , Vijay Natraj , Tianhao Le , Feng Xu , Aronne Merrelli , David Crisp , Stanley P. Sander , Yuk L. Yung

The AErosol RObotic NETwork (AERONET), established in 1993 with limited global sites, has grown to over 900 locations, providing three decades of continuous aerosol data. While earlier studies based on shorter time periods (10-12 years) and…

Atmospheric and Oceanic Physics · Physics 2026-02-11 Manoj K Mishra , Shameela S F , Pradyuman Singh Rathore

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

Aerosols influence weather and climate by interacting with radiation through absorption and scattering. These effects heavily rely on the optical properties of aerosols, which are mainly governed by attributes such as morphology, size…

Atmospheric and Oceanic Physics · Physics 2024-07-02 Pankaj Kumar , Heike Vogel , Julia Bruckert , Lisa Janina Muth , Gholam Ali Hoshyaripour

The current generation of millimeter receivers is able to produce cubes of 800 000 pixels by 200 000 frequency channels to cover several square degrees over the 3 mm atmospheric window. Estimating the physical conditions of the interstellar…

Algorithms for autonomous navigation in environments without Global Navigation Satellite System (GNSS) coverage mainly rely on onboard perception systems. These systems commonly incorporate sensors like cameras and Light Detection and…

Aerosols are a ubiquitous feature of planetary atmospheres and leave clear spectral imprints in exoplanet spectra. Pre-JWST, exoplanet retrieval frameworks mostly adopted simple parametric approximations. With JWST, we now have access to…

Earth and Planetary Astrophysics · Physics 2024-10-28 Elijah Mullens , Nikole K. Lewis , Ryan J. MacDonald

Measurements made by satellite remote sensing, Moderate Resolution Imaging Spectroradiometer (MODIS), and globally distributed Aerosol Robotic Network (AERONET) are compared. Comparison of the two datasets measurements for aerosol optical…

Machine Learning · Statistics 2015-06-15 N. K. Malakar , D. J. Lary , D. Gencaga , A. Albayrak , J. Wei

Air pollution is a major risk factor for global health, with both ambient and household air pollution contributing substantial components of the overall global disease burden. One of the key drivers of adverse health effects is fine…

Satellite-based retrieval has become a popular PM2.5 monitoring method currently. To improve the retrieval performance, multiple variables are usually introduced as auxiliary variable in addition to aerosol optical depth (AOD). Different…

Atmospheric and Oceanic Physics · Physics 2019-07-09 Qianqian Yang , Qiangqiang Yuan , Linwei Yue , Huanfeng Shen , Liangpei Zhang

The new method for aerosol measurement using wide-field stellar photometry was originally developed for B-filter data. The dependence of VAOD (vertical aerosol optical depth) on wavelength can be used to understand the physical…

Instrumentation and Methods for Astrophysics · Physics 2025-05-06 Shefali Negi , Jan Ebr , Sergey Karpov , Jiří Eliášek

Aerosol scattering influences the retrieval of the column-averaged dry-air mole fraction of CO2 (XCO2) from the Orbiting Carbon Observatory-2 (OCO-2). This is especially true for surfaces with reflectance close to a critical value where…

Atmospheric and Oceanic Physics · Physics 2022-01-26 Sihe Chen , Vijay Natraj , Zhao-Cheng Zeng , Yuk-ling Yung

Fine particulate matter and aerosol optical thickness are of interest to atmospheric scientists for understanding air quality and its various health/environmental impacts. The available data are extremely large, making uncertainty…

Methodology · Statistics 2025-03-05 Madelyn Clinch , Jonathan R. Bradley

We present, for the first time, spectral behaviour of aerosol optical depths (AODs) over Manora Peak, Nainital located at an altitude of $\sim$ 2 km in the Shivalik ranges of central Himalayas. The observations were carried out using a…

Atmospheric and Oceanic Physics · Physics 2015-06-26 Ram Sagar , Brijesh Kumar , U. C. Dumka , K. Krishna Moorthy , P. Pant

Atmospheric retrieval of exoplanets from spectroscopic observations requires an extensive exploration of a highly degenerate and high-dimensional parameter space to accurately constrain atmospheric parameters. Retrieval methods commonly…

Earth and Planetary Astrophysics · Physics 2020-06-24 Matthew C. Nixon , Nikku Madhusudhan

LiDAR-based 3D perception and localization on unmanned aerial vehicles (UAVs) are fundamentally limited by the narrow field of view (FoV) of compact LiDAR sensors and the payload constraints that preclude multi-sensor configurations.…

Robotics · Computer Science 2025-09-12 Jianping Li , Xinhang Xu , Zhongyuan Liu , Shenghai Yuan , Muqing Cao , Lihua Xie

We develop a new estimation technique for recovering depth-of-field from multiple stereo images. Depth-of-field is estimated by determining the shift in image location resulting from different camera viewpoints. When this shift is not…

Applications · Statistics 2009-10-07 E. Anderes , B. Yu , V. Jovanovic , C. Moroney , M. Garay , A. Braverman , E. Clothiaux

Heavy metal pollution, particularly in the form of airborne aerosols such as lead (Pb), cadmium (Cd), mercury (Hg), and cobalt (Co), poses serious health and environmental risks, necessitating highly sensitive remote detection techniques.…

Instrumentation and Detectors · Physics 2025-06-12 Yuezheng Wang , Lu Sun , Zhiwenqi An , Jiayun Xue , Zhixuan An , Nan Zhang , Lie Lin , Weiwei Liu

The atmospheric aerosol monitoring system of the Pierre Auger Observatory has been operating smoothly since 2004. Two laser facilities (Central Laser Facility, CLF and eXtreme Laser Facility, XLF) fire sets of 50 shots four times per hour…

Instrumentation and Methods for Astrophysics · Physics 2019-06-12 Laura Valore

We present a radiative transfer analysis of latitudinally resolved H (1.487-1.783 micron) and K (2.028-2.364 micron) band spectra of Uranus, from which we infer the distributions of aerosols and methane in the planet's atmosphere. Data were…

Earth and Planetary Astrophysics · Physics 2018-06-06 Michael T. Roman , Don Banfield , Peter J. Gierasch