Results 21 to 30 of about 152,394 (316)

Test Results From the Prelaunch Characterization Campaign of the Engineering Test Unit of the Ocean Color Instrument of NASA’s Plankton, Aerosol, Cloud and Ocean Ecosystem (PACE) Mission

open access: yesFrontiers in Remote Sensing, 2022
This paper summarizes the results from the system level test campaign of the Engineering Test Unit (ETU) of the ‘Ocean Color Instrument’ (OCI), the primary payload of NASA’s ‘Plankton, Aerosol, Cloud and ocean Ecosystem’ (PACE) mission. The main goals of
Gerhard Meister   +18 more
doaj   +1 more source

Active aerosols

open access: yesOptics Express, 2022
We report the dynamics and control of the orientational and positional order of ensembles of gold nanorods suspended in air at standard temperature and pressure using externally applied electric fields, demonstrating an active aerosol. Light filter, valve and gradient responses are shown, establishing active aerosols as a unique type of optical element
Charles A. Rohde   +5 more
openaire   +3 more sources

Do atmospheric aerosols form glasses? [PDF]

open access: yes, 2008
Zobrist B, Marcolli C, Pedernera DA, Koop T. Do atmospheric aerosols form glasses? ATMOSPHERIC CHEMISTRY AND PHYSICS. 2008;8(17):5221-5244.A new process is presented by which water soluble organics might influence ice nucleation, ice growth, chemical ...
Koop, Thomas   +12 more
core   +2 more sources

Extreme Saharan dust events expand northward over the Atlantic and Europe, prompting record-breaking PM10 and PM2.5 episodes [PDF]

open access: yesAtmospheric Chemistry and Physics
Unprecedented extreme Saharan dust (duxt) events have recently expanded northward from subtropical NW Africa to the Atlantic and Europe, with severe impacts on the Canary Islands, mainland Spain and continental Portugal.
S. Rodríguez, J. López-Darias
doaj   +1 more source

Practicalities and Driving Dynamics of a Real Driving Emissions (RDE) Euro 6 Regulation Homologation Test

open access: yesEnergies, 2019
One of the most important sources of air pollution, especially in urban areas, is the exhaust emissions from passenger cars. New European emissions regulations, to minimize the gap between manufacturer-reported emissions and those emitted on the road ...
Timothy Bodisco, Ali Zare
doaj   +1 more source

The role of organic aerosols in homogeneous ice formation [PDF]

open access: yes, 2004
Kärcher B, Koop T. The role of organic aerosols in homogeneous ice formation. ATMOSPHERIC CHEMISTRY AND PHYSICS. 2005;5(3):703-714.Recent field observations suggest that the fraction of organic-containing aerosol particles in ice cloud particles is ...
Kärcher, B   +5 more
core   +2 more sources

Measurement of PM2.5 Mass Concentration Using an Electrostatic Particle Concentrator-Based Quartz Crystal Microbalance

open access: yesIEEE Access, 2019
Particulate matter (PM) is one of the most critical air pollutants, and various instruments have been developed to measure PM mass concentration. Of these, quartz crystal microbalance (QCM) based instruments have received much attention.
Nhan Dinh Ngo   +3 more
doaj   +1 more source

Evaluation of the ability of radiation transmission model and MODIS images to estimate aerosol optical depth [PDF]

open access: yesمدیریت بیابان, 2018
Aerosols play an important role in the climate system of the atmosphere. These atmospheric particles are directly affected by changing radiation exposure by diffusing and absorbing different wavelengths and indirectly by changing the optical properties ...
Saeid Farhadi   +4 more
doaj   +1 more source

Photophoresis – a Forgotten Force ??

open access: yesKONA Powder and Particle Journal, 2014
In general a force will act on a particle illuminated by light or other radiation and absorbing part of the flux, and as a consequence a motion will result.
Helmuth Horvath
doaj   +1 more source

Using Machine Learning Methods to Identify Particle Types from Doppler Lidar Measurements in Iceland

open access: yesRemote Sensing, 2021
Doppler lidars are used worldwide for wind monitoring and recently also for the detection of aerosols. Automatic algorithms that classify the lidar signals retrieved from lidar measurements are very useful for the users.
Shu Yang   +4 more
doaj   +1 more source

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