Results 21 to 30 of about 20,896 (247)

Harnessing stratospheric diffusion barriers for enhanced climate geoengineering [PDF]

Atmospheric Chemistry and Physics, 2021
Stratospheric sulfate aerosol geoengineering is a proposed method to temporarily intervene in the climate system to increase the reflectance of shortwave radiation and reduce mean global temperature.
N. O. Aksamit, B. Kravitz, B. Kravitz, D. G. MacMartin, G. Haller   +4 more
doaj   +1 more source

Rayleigh-scattering microscopy for tracking and sizing nanoparticles in focused aerosol beams

IUCrJ, 2018
Ultra-bright femtosecond X-ray pulses generated by X-ray free-electron lasers (XFELs) can be used to image high-resolution structures without the need for crystallization.
Max F. Hantke, Johan Bielecki, Olena Kulyk, Daniel Westphal, Daniel S. D. Larsson, Martin Svenda, Hemanth K. N. Reddy, Richard A. Kirian, Jakob Andreasson, Janos Hajdu, Filipe R. N. C. Maia   +10 more
doaj   +1 more source

Climate response to off-equatorial stratospheric sulfur injections in three Earth system models – Part 1: Experimental protocols and surface changes [PDF]

Atmospheric Chemistry and Physics, 2023
There is now substantial literature on climate model studies of equatorial or tropical stratospheric SO2 injections that aim to counteract the surface warming produced by rising concentrations of greenhouse gases.
D. Visioni, E. M. Bednarz, W. R. Lee, B. Kravitz, B. Kravitz, A. Jones, J. M. Haywood, J. M. Haywood, D. G. MacMartin   +8 more
doaj   +1 more source

The sensitivity of smoke aerosol dispersion to smoke injection height and source-strength: a multi-model AeroCom study [PDF]

Atmospheric Chemistry and Physics
The near-source and downwind impacts of smoke aerosols depend on both emitted mass and injection height. This study examines aerosol dispersion sensitivity to these factors using four global models from the AeroCom Phase III Biomass Burning Emission and ...
X. Pan, X. Pan, M. Chin, R. A. Kahn, R. A. Kahn, H. Matsui, T. Takemura, M. Lin, Y. Xie, D. Kim, D. Kim, M. Val Martin   +11 more
doaj   +1 more source

An interactive stratospheric aerosol model intercomparison of solar geoengineering by stratospheric injection of SO₂ or accumulation-mode sulfuric acid aerosols [PDF]

Atmospheric Chemistry and Physics, 2022
Studies of stratospheric solar geoengineering have tended to focus on modification of the sulfuric acid aerosol layer, and almost all climate model experiments that mechanistically increase the sulfuric acid aerosol burden assume injection of SO2.
D. K. Weisenstein, D. K. Weisenstein, D. Visioni, H. Franke, U. Niemeier, S. Vattioni, G. Chiodo, T. Peter, D. W. Keith   +8 more
doaj   +1 more source

Microphysics regimes due to haze–cloud interactions: cloud oscillation and cloud collapse [PDF]

Atmospheric Chemistry and Physics
It is known that aqueous haze particles can be activated into cloud droplets in a supersaturated environment. However, haze–cloud interactions have not been fully explored, partly because haze particles are not represented in most cloud-resolving models.
F. Yang, H. F. Sadi, R. A. Shaw, F. Hoffmann, P. Hou, P. Hou, A. Wang, M. Ovchinnikov   +7 more
doaj   +1 more source

Sensitivity of the radiative forcing by stratospheric sulfur geoengineering to the amount and strategy of the SO₂injection studied with the LMDZ-S3A model [PDF]

Atmospheric Chemistry and Physics, 2018
The enhancement of the stratospheric sulfate aerosol layer has been proposed as a method of geoengineering to abate global warming. Previous modelling studies found that stratospheric aerosol geoengineering (SAG) could effectively compensate for the ...
C. Kleinschmitt, C. Kleinschmitt, O. Boucher, U. Platt   +3 more
doaj   +1 more source

Interactive stratospheric aerosol models' response to different amounts and altitudes of SO₂ injection during the 1991 Pinatubo eruption [PDF]

Atmospheric Chemistry and Physics, 2023
A previous model intercomparison of the Tambora aerosol cloud has highlighted substantial differences among simulated volcanic aerosol properties in the pre-industrial stratosphere and has led to questions about the applicability of global aerosol models
I. Quaglia, C. Timmreck, U. Niemeier, D. Visioni, G. Pitari, C. Brodowsky, C. Brühl, S. S. Dhomse, H. Franke, H. Franke, A. Laakso, G. W. Mann, G. W. Mann, E. Rozanov, E. Rozanov, E. Rozanov, T. Sukhodolov, T. Sukhodolov   +17 more
doaj   +1 more source

The impact of MISR-derived injection height initialization on wildfire and volcanic plume dispersion in the HYSPLIT model [PDF]

Atmospheric Measurement Techniques, 2018
The dispersion of particles from wildfires, volcanic eruptions, dust storms, and other aerosol sources can affect many environmental factors downwind, including air quality.
C. J. Vernon, R. Bolt, T. Canty, R. A. Kahn, R. A. Kahn   +4 more
doaj   +1 more source

An Update on Engineering Issues Concerning Stratospheric Aerosol Injection for Geoengineering [PDF]

Environmental Research Communications, 2020
Solar Radiation Management (SRM) geoengineering is a proposed response to anthropogenic global warming (AGW)1. Stratospheric aerosol injection (SAI) is one proposed method, reliant on lofting particles into the stratosphere. Engineering reviews related to this technology approach have been sparse, with most major primary analyses now at least five ...
Lockley, Andrew, MacMartin, Doug, Hunt, Hugh   +2 more
openaire   +2 more sources