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Marine stratocumulus cloud decks are regarded as the reflectors of the climate system, returning back to space a significant part of the income solar radiation, thus cooling the atmosphere. Such clouds can exist in two stable modes, open…

Atmospheric and Oceanic Physics · Physics 2017-01-12 Ilan Koren , Eli Tziperman , Graham Feingold

We investigate the evolution of dusty gas clouds falling into the centre of an active Seyfert nucleus. Two-dimensional high-resolution radiation hydrodynamics simulations are performed to study the fate of single clouds and the interaction…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Marc Schartmann , Martin Krause , Andreas Burkert

Harvesting condensed atmospheric vapour as dew water can be an alternative or complementary potable water resource in specific arid or insular areas. Such radiation-cooled condensing devices use already existing flat surfaces (roofs) or…

Fluid Dynamics · Physics 2007-07-18 O. Clus , Jalil Ouazzani , M. Muselli , Vadim Nikolayev , Girja Sharan , D. Beysens

One of the greatest sources of uncertainty in future climate projections comes from limitations in modelling clouds and in understanding how different cloud types interact with the climate system. A key first step in reducing this…

Atmospheric and Oceanic Physics · Physics 2022-10-17 Valentina Zantedeschi , Fabrizio Falasca , Alyson Douglas , Richard Strange , Matt J. Kusner , Duncan Watson-Parris

Using a general circulation model with newly implemented cloud modeling, we investigate how radiative feedback can self-consistently shape condensate cloud distributions, temperatures, and fluxes in a hot Jupiter atmosphere. We apply a…

Earth and Planetary Astrophysics · Physics 2019-02-13 Michael Roman , Emily Rauscher

The question whether or not the presence of warm hydrometeors in clouds may play a significant role in the nucleation of new ice particles has been debated for several decades. While the early works of Fukuta and Lee (1986) and Baker (1991)…

Atmospheric and Oceanic Physics · Physics 2021-02-03 Michael Krayer , Agathe Chouippe , Markus Uhlmann , Jan Dušek , Thomas Leisner

Meteorologists use shapes and movements of clouds in satellite images as indicators of several major types of severe storms. Satellite imaginary data are in increasingly higher resolution, both spatially and temporally, making it impossible…

Computer Vision and Pattern Recognition · Computer Science 2019-06-26 Xinye Zheng , Jianbo Ye , Yukun Chen , Stephen Wistar , Jia Li , Jose A. Piedra-Fernández , Michael A. Steinberg , James Z. Wang

The presence of clouds between an airshower and a space-based detector can dramatically alter the measured signal characteristics due to absorption and scattering of the photonic signals. Furthermore, knowledge of the cloud cover in the…

Astrophysics · Physics 2007-05-23 John Krizmanic , Pierre Sokolsky , Robert Streitmatter

Clouds form in atmospheres of brown dwarfs and planets. The cloud particle formation processes are similar to the dust formation process studied in circumstellar shells of AGB stars and in Supernovae. Cloud formation modelling in substellar…

Solar and Stellar Astrophysics · Physics 2021-06-04 E. K. H. Lee , Ch. Helling , H. Giles , S. T. Bromley

Noise measurement is a powerful tool to investigate many phenomena from laser characterization to quantum behavior of light. In this paper, we report on intensity noise measurements obtained when a laser beam is transmitted through a large…

The current work combines the Cluster Dynamics (CD) technique and CALPHAD-based precipitation modeling to address the second phase precipitation in cold-worked (CW) 316 stainless steels (SS) under irradiation at 300-400 C. CD provides the…

Materials Science · Physics 2017-05-31 Mahmood Mamivand , Ying Yang , Jeremy Busby , Dane Morgan

The formation of ice in mixed phase clouds greatly impacts Earths hydrologic cycle. The intensity, distribution and frequency of precipitation as well as radiative properties of clouds in the mid latitudes are strongly influenced by the…

Atmospheric and Oceanic Physics · Physics 2019-06-17 Prasanth Prabhakaran , Gregory Kinney , Will Cantrell , Raymond A. Shaw , Eberhard Bodenschatz

Climate change has been a common interest and the forefront of crucial political discussion and decision-making for many years. Shallow clouds play a significant role in understanding the Earth's climate, but they are challenging to…

Image and Video Processing · Electrical Eng. & Systems 2021-07-13 Tashin Ahmed , Noor Hossain Nuri Sabab

Clouds containing ice particles play a crucial role in the climate system. Yet they remain a source of great uncertainty in climate models and future climate projections. In this work, we create a new observational constraint of…

Atmospheric and Oceanic Physics · Physics 2023-12-14 Kai Jeggle , Mikolaj Czerkawski , Federico Serva , Bertrand Le Saux , David Neubauer , Ulrike Lohmann

Rainfall estimation through the analysis of its impact on electromagnetic waves has sparked increasing interest in the research community. Recent studies have delved into its effects on cellular network performance, demonstrating the…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Christian Giannetti

Fast simulation of the energy depositions in high-granular detectors is needed for future collider experiments with ever-increasing luminosities. Generative machine learning (ML) models have been shown to speed up and augment the…

Instrumentation and Detectors · Physics 2024-02-27 Erik Buhmann , Frank Gaede , Gregor Kasieczka , Anatolii Korol , William Korcari , Katja Krüger , Peter McKeown

Accurately quantifying the impact of radiation feedback in star formation is challenging. To address this complex problem, we employ deep learning techniques, denoising diffusion probabilistic models (DDPMs), to predict the interstellar…

Astrophysics of Galaxies · Physics 2023-09-13 Duo Xu , Stella Offner , Robert Gutermuth , Michael Grudic , David Guszejnov , Philip Hopkins

Aims: We introduce a new deep-learning approach for the reconstruction of 3D dust density and temperature distributions from multi-wavelength dust emission observations on the scale of individual star-forming cloud cores (<0.2pc). Methods:…

Being able to effectively identify clouds and monitor their evolution is one important step toward more accurate quantitative precipitation estimation and forecast. In this study, a new gradient-based cloud-image segmentation technique is…

Computer Vision and Pattern Recognition · Computer Science 2018-10-01 Negin Hayatbini , Kuo-lin Hsu , Soroosh Sorooshian , Yunji Zhang , Fuqing Zhang

Millimeter wave (mmWave) radars have attracted significant attention from both academia and industry due to their capability to operate in extreme weather conditions. However, they face challenges in terms of sparsity and noise…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Ruibin Zhang , Donglai Xue , Yuhan Wang , Ruixu Geng , Fei Gao