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Desert dust aerosols affect Earth's global energy balance through direct interactions with radiation, and through indirect interactions with clouds and ecosystems. But the magnitudes of these effects are so uncertain that it remains unclear…

Atmospheric and Oceanic Physics · Physics 2017-10-23 Jasper F. Kok , David A. Ridley , Qing Zhou , Ron L. Miller , Chun Zhao , Colette L. Heald , Daniel S. Ward , Samuel Albani , Karsten Haustein

Mapping radioactive contamination using aerial survey measurements is an area under active investigation today. The radiometric aerial survey technique has been extensively applied following reactor accidents and also would provide a key…

Data Analysis, Statistics and Probability · Physics 2020-01-13 Laurel E. Sinclair , Richard Fortin

When large surface areas of the Earth are altered, radiative forcing due to changes in surface reflectance can drive climate change. Yet to achieve the necessary scale to remove the substantial amounts of carbon dioxide from the atmosphere…

Atmospheric and Oceanic Physics · Physics 2025-01-16 J. B. Marston , Daniel E. Ibarra

The local extremes (i.e., peaks and pits) of the landscape-elevation field play a critical role in energy, water, and nutrient distribution over the region, but the statistical distributions of these points in relation to landscape…

Geophysics · Physics 2021-09-21 Shashank Kumar Anand , Amilcare Porporato

In the case of radon exposure, the spatial distribution of deposited radioactive particles is highly inhomogeneous in the central airways. The objective of this research is to investigate the consequences of this heterogeneity regarding…

Medical Physics · Physics 2014-04-23 Balázs G. Madas , Imre Balásházy , Árpád Farkas , István Szőke

The tropopause is the boundary between the troposphere and the stratosphere, so its height determines the nature of processes in the atmosphere and depends on them. The criterion for determining the height of the tropopause is a decrease in…

Atmospheric and Oceanic Physics · Physics 2022-05-31 Alexander Kochin

The pattern of radiation energy deposition in substances at the microscopic level of lattice, molecule size, or the cell's nucleus is not uniform. The energy of radiation is transferred to the substance medium in the form of discrete,…

Medical Physics · Physics 2022-10-14 Elsayed K. Elmaghraby , Mohamed Bahaaeldin-Afifi

We have calculated by using CARI-7A the effective and ambient radiation doses absorbed by a reference human phantom inside aircrafts with cruise speed, and averaged ascent/descent rates as presented by real airplanes such as: Airbus 380,…

Higher concentrations of atmospheric nitrous oxide (N2O) are expected to slightly warm Earth's surface because of increases in radiative forcing. Radiative forcing is the difference in the net upward thermal radiation flux from the Earth…

Atmospheric and Oceanic Physics · Physics 2022-11-30 C. A. de Lange , J. D. Ferguson , W. Happer , W. A. van Wijngaarden

We discuss how greenhouse gases affect radiation transfer in Earth's atmosphere. We explain how greenhouse gases like water vapor or carbon dioxide, differ from non-greenhouse gases like nitrogen or oxygen. Using simple thermodynamics and…

Atmospheric and Oceanic Physics · Physics 2023-03-03 W. A. van Wijngaarden , W. Happer

High-energy cosmic rays passing through the Earth's atmosphere produce extensive showers whose charges emit radio frequency pulses. Despite the low density of the Earth's atmosphere, this emission should be affected by the air refractive…

Astrophysics · Physics 2009-11-13 N. Meyer-Vernet , A. Lecacheux , D. Ardouin

We suggest a model of rain scavenging of soluble gaseous pollutants in the atmosphere. It is shown that below-cloud gas scavenging is determined by non-stationary convective diffusion equation with the effective Peclet number. The obtained…

Atmospheric and Oceanic Physics · Physics 2015-05-19 Tov Elperin , Andrew Fominykh , Boris Krasovitov , Alexander Vikhansky

The use of drone base stations to provide wireless connectivity for ground terminals is becoming a promising part of future technologies. The design of such aerial networks is however different compared to cellular 2D networks, as antennas…

Networking and Internet Architecture · Computer Science 2018-06-29 Mohammad Mahdi Azari , Yuri Murillo , Osama Amin , Fernando Rosas , Mohamed-Slim Alouini , Sofie Pollin

The Matuyama-Brunhes reversal of Earth's magnetic dipole field took place 0.78 Ma ago, and detailed temporally resolved paleomagnetic data are available for this period. A geomagnetic reversal is expected to impact the cosmic ray flux,…

Geophysics · Physics 2022-09-22 Jacob Svensmark

We have carried out relativistic three-dimensional simulations of high-power radio sources propagating into asymmetric cluster environments. We offset the environment by 0 or 1 core radii (equal to 144 kpc), and incline the jets by 0, 15,…

High Energy Astrophysical Phenomena · Physics 2021-10-20 Patrick M. Yates-Jones , Stanislav S. Shabala , Martin G. H. Krause

Aerosols, both natural and anthropogenic, play an important role in the atmospheric science, by imparting radiative forcing and perturbing the radiative balance of the Earth atmosphere system as well as by degrading the environment. To…

Atmospheric and Oceanic Physics · Physics 2007-05-23 Ram Sagar , B. Kumar , P. Pant , U. C. Dumka , K. K. Moorthy , R. Sridharan

Atmospheric refraction affects to various degrees exoplanet transit, lunar eclipse, as well as stellar occultation observations. Exoplanet retrieval algorithms often use analytical expressions for the column abundance along a ray traversing…

Earth and Planetary Astrophysics · Physics 2017-03-23 Yan Betremieux , Lisa Kaltenegger

The development of low-cost sensors and novel calibration algorithms offer new opportunities to supplement existing regulatory networks to measure air pollutants at a high spatial resolution and at hourly and sub-hourly timescales. We use a…

The propagation of active galactic nucleus jets depends both on the environment into which they propagate and on their internal structure. To test the impact that different magnetic topologies have on the observable properties of radio…

High Energy Astrophysical Phenomena · Physics 2023-05-03 Yi-Hao Chen , Sebastian Heinz , Eric Hooper

The flux of ultrahigh energy cosmic rays reaching the Earth is affected by the interactions with the cosmic radiation backgrounds as well as with the magnetic fields that are present along their trajectories. We combine the SimProp cosmic…

High Energy Astrophysical Phenomena · Physics 2021-09-08 Juan Manuel González , Silvia Mollerach , Esteban Roulet