Results 81 to 90 of about 95,355 (231)

Kernel‐Based Estimation of Stratospheric Aerosol Radiative Effects From Volcanic and Wildfire Events

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract To facilitate the quantification of the stratospheric aerosol direct radiative effect (ARE), this study develops a suite of aerosol kernels based on Modern‐Era Retrospective Analysis for Research and Applications, Version 2 reanalysis data. The kernels comprise a five‐dimensional data set that includes latitude, longitude, time, wavelength ...
Qiurun Yu, Yi Huang
wiley   +1 more source

Opportunistic channel estimation with LTE signals of limited bandwidth for positioning applications

EURASIP Journal on Wireless Communications and Networking, 2023
The positioning problem is interesting in a variety of applications, especially in indoor environments or in urban canyons, where the position information obtainable with traditional Global Navigation Satellite Systems is limited.
A. Pin, R. Rinaldo, A. Tonello, C. Marshall, M. Driusso, A. Biason, A. Dalla Torre   +6 more
doaj   +1 more source

An Analytical Model of the Lifecycle of Tropical Anvil Cloud Radiative Effects

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract Satellite observations and numerical simulations show that the small net Cloud Radiative Effect (CRE) of tropical anvil clouds results from a near‐cancellation between large but opposing longwave (LW) and shortwave (SW) components over the cloud's lifecycle.
Nicholas J. Lutsko, Casey J. Wall, Blaž Gasparini   +2 more
wiley   +1 more source

Reduction of Global Sulfate Aerosol Concentration and Corresponding Radiative Effects From Recent Chinese SO2 ${\text{SO}}_{2}$ Emission Reduction

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Anthropogenic emissions over China have recently declined due to environmental actions. This work estimates the sensitivity of sulfate aerosol (SO4 ${\text{SO}}_{4}$) concentration to the amount of SO2 ${\text{SO}}_{2}$ emissions reduction over China from 2010 to 2020 using an Earth system model with two different aerosol representations.
Warren P. Smith, Simone Tilmes, Benjamin Gaubert, Claire Granier, Yunqian Zhu, Oliver Eppers, Franziska Köllner, Philipp Brauner, Andrew Rollins, Eleanor Waxman, Gregory Schill, Colin Gurganus, L. Gregory Huey, David Tanner, Young‐Ro Lee, Chelsea Bekemeier   +15 more
wiley   +1 more source

Indoor Localization Based on Time of Arrival Using Multi-Zone Technique

Proceedings of the Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020, 2020
Indoor position localization suffers from the regressive signal when the system implement based on Receive Signal Strength (RSS) and time synchronization when implement based on Time of Arrival (ToA).
M. Mosleh, Alhamzah T. Mohammad, A. Daraj   +2 more
semanticscholar   +1 more source

The Atmosphere's Substantial Role in Interannual Variability of Earth's Energy Imbalance

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Earth's Energy Imbalance (EEI) is a key metric to quantify climate change. While the ocean absorbs most excess heat, the atmosphere contributes only 1%–2% to the long‐term mean of EEI. However, our analysis of observational data demonstrates that variations in the atmosphere's energy content play a much larger role in interannual variations of
Michael Mayer, Norman G. Loeb, John M. Lyman, Gregory C. Johnson, Susanna Winkelbauer   +4 more
wiley   +1 more source

Exposing and Reducing Biases of Simulating Mixed‐Phase Clouds in the Convection‐Permitting E3SM Atmosphere Model: Lessons From an Arctic Cold‐Air Outbreak

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 3, 16 February 2026.
Abstract Mixed‐phase clouds modulate the water and energy cycles of high‐latitude regions, yet their liquid‐ice phase partitioning has long been poorly simulated in climate models. Here, simulations of Arctic mixed‐phase clouds by the Simple Cloud‐Resolving E3SM Atmosphere Model (SCREAM) are assessed against large‐eddy simulations, satellite data, and ...
Lin Lin, Yunyan Zhang, Hassan Beydoun, Xue Zheng, Meng Zhang, Peter Bogenschutz, Peng Wu, Peter M. Caldwell   +7 more
wiley   +1 more source

Position determination of acoustic source using a discrete probability density method supported by joint detection and time of arrival estimation [PDF]

Scientific Technical Review, 2017
The localization of various acoustic sources in a battlefield (such as weapon rounds, mortars, rockets, mines, improvised explosive devices, vehicle-borne improvised explosive devices and airborne vehicles) nowadays has significant history.
Pokrajac Ivan, Vračar Miodrag, Kozić Nadica, Brusin Radiana, Stanojević Milan   +4 more
doaj  

Room geometry estimation from a single channel acoustic impulse response [PDF]

, 2013
For a 2D rectangular room of unknown dimensions and with unknown source and microphone positions, the times of arrival of reflections can be described in terms of im-age source positions.
Brookes, M, Moore, AH, Naylor, PA
core  

Non-line-of-sight Node Localization based on Semi-Definite Programming in Wireless Sensor Networks

, 2009
An unknown-position sensor can be localized if there are three or more anchors making time-of-arrival (TOA) measurements of a signal from it. However, the location errors can be very large due to the fact that some of the measurements are from non-line ...
Chen, Hongyang, Lui, Kenneth W. K., Poor, H. Vincent, So, H. C., Wang, Zizhuo   +4 more
core   +2 more sources