نتایج جستجو برای: dust deposition
تعداد نتایج: 133067 فیلتر نتایج به سال:
Citation: Tsiola A, Tsagaraki TM, Giannakourou A, Nikolioudakis N, Yücel N, Herut B and Pitta P (2017) Corrigendum: Bacterial Growth and Mortality after Deposition of Saharan Dust and Mixed Aerosols in the Eastern Mediterranean Sea: A Mesocosm Experiment. Front. Mar. Sci. 4:57. doi: 10.3389/fmars.2017.00057 Corrigendum: Bacterial Growth and Mortality after Deposition of Saharan Dust and Mixed A...
In this paper the risk associated with deposition of aerosol (‘‘hygroscopic dust”) on printed circuit boards is assessed for different equipment designs and deployment. The amount of deposited dust is related to (1) the total dust availability in a given type of equipment and (2) to the rate of deposition of dust due to different mechanisms. Of these, the Brownian diffusion, gravitational settl...
The presence of light-absorbing aerosol particles deposited on arctic snow and sea ice influences the surface albedo, causing greater shortwave absorption, warming, and loss of snow and sea ice, lowering the albedo further. The Community Earth System Model version 1 (CESM1) now includes the radiative effects of light-absorbing particles in snow on land and sea ice and in sea ice itself. We inve...
Citation: Guo C, Xia X, Pitta P, Herut B, Rahav E, Berman-Frank I, Giannakourou A, Tsiola A, Tsagaraki TM and Liu H (2016) Shifts in Microbial Community Structure and Activity in the Ultra-Oligotrophic Eastern Mediterranean Sea Driven by the Deposition of Saharan Dust and European Aerosols. Front. Mar. Sci. 3:170. doi: 10.3389/fmars.2016.00170 Shifts in Microbial Community Structure and Activit...
Deposition of Cu, Zn, Mn, Cr, Ni, Pb and Cd, and their concentrations in falling dust were measured in 1995-1998 in eastern Mazowieckie Province (former Siedleckie Province). No maximum permissible values of dust deposition, nor Pb and Cd concentrations, were exceeded. It was observed that the elements of low melting temperatures (Pb, Zn) reached higher concentrations in paniculate matter, and ...
The deposition mode ice nucleation efficiency of various dust aerosols was investigated at cirrus cloud temperatures between 196 and 223 K using the aerosol and cloud chamber facility AIDA (Aerosol Interaction and Dynamics in the Atmosphere). Arizona test dust (ATD) as a reference material and two dust samples from the Takla Makan desert in Asia (AD1) and the Sahara (SD2) were used for the expe...
Asian dust has been reported to carry anthropogenic reactive nitrogen during transport from source areas to the oceans. In this study, we attempted to characterize NH+4 and NO − 3 in atmospheric particles collected at a coastal site in northern China during spring dust events from 2008 to 2011. Based on the mass concentrations of NH+4 and NO−3 in each total suspended particle (TSP) sample, the ...
Citation: Rahav E, Paytan A, Chien C-T, Ovadia G, Katz T and Herut B (2016) The Impact of Atmospheric Dry Deposition Associated Microbes on the Southeastern Mediterranean Sea Surface Water following an Intense Dust Storm. Front. Mar. Sci. 3:127. doi: 10.3389/fmars.2016.00127 The Impact of Atmospheric Dry Deposition Associated Microbes on the Southeastern Mediterranean Sea Surface Water followin...
[1] Aeolian dust input may be a critical source of dissolved iron for phytoplankton growth in some oceanic regions. We used an atmospheric general circulation model (GCM) to simulate dust transport and removal by dry and wet deposition. Model results show extremely low dust concentrations over the equatorial Pacific and Southern Ocean. We find that wet deposition through precipitation scavengin...
Atmospheric inputs of iron to the open ocean are hypothesized to modulate ocean biogeochemistry. This review presents an integration of available observations of atmospheric iron and iron deposition, and also covers bioavailable iron distributions. Methods for estimating temporal variability in ocean deposition over the recent past are reviewed. Desert dust iron is estimated to represent 95% of...
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