Results 31 to 40 of about 505,344 (284)

Atmospheric Deposition of Benzo[a]pyrene: Developing a Spatial Pattern at a National Scale

open access: yesAtmosphere, 2022
Benzo[a]pyrene (BaP), an indicator of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere, is an important ambient air pollutant with significant human health and environmental effects.
Iva Hůnová   +4 more
doaj   +1 more source

Measurement of dry deposition to bulk precipitation collectors using a novel flushing sampler [PDF]

open access: yes, 2008
Bulk precipitation samplers, which are continuously open, also sample gases and particles deposited on the funnel surface. Wet-only samplers, which open only during precipitation, avoid this problem, but can be bulky (leading to disruption of air flow ...
Cape, John Neil   +2 more
core   +1 more source

Deposition velocity of H2: a new algorithm for its dependence on soil moisture and temperature [PDF]

open access: yesTellus: Series B, Chemical and Physical Meteorology, 2013
We derive an analytical expression for the deposition velocity of H2 on soil, vd, which explicitly describes the dependence of vd on the average soil moisture, and temperature, T.
Dieter H. Ehhalt, Franz Rohrer
doaj   +1 more source

Energy Efficiency Improvements in Dry Drilling with Optimised Diamond-Like Carbon Coating [PDF]

open access: yes, 2008
We demonstrate enhancements of performance and energy efficiency of cutting tools by deposition of diamond-like carbon (DLC) coatings on machine parts. DLC was deposited on steel drill bits, using plasma enhanced chemical vapour deposition (PECVD) with ...
A.W. Anson   +16 more
core   +1 more source

Gaseous Oxidized Mercury Dry Deposition Measurements in the Southwestern USA: A Comparison between Texas, Eastern Oklahoma, and the Four Corners Area

open access: yesThe Scientific World Journal, 2014
Gaseous oxidized mercury (GOM) dry deposition measurements using aerodynamic surrogate surface passive samplers were collected in central and eastern Texas and eastern Oklahoma, from September 2011 to September 2012.
Mark E. Sather   +14 more
doaj   +1 more source

Technical Note: An implementation of the dry removal processes DRY DEPosition and SEDImentation in the Modular Earth Submodel System (MESSy) [PDF]

open access: yes, 2006
International audienceWe present the submodels DRYDEP and SEDI for the Modular Earth Submodel System (MESSy). Dry deposition of gases and aerosols is calculated within DRYDEP, whereas SEDI deals with aerosol particle sedimentation.
Buchholz, J.   +5 more
core   +4 more sources

Evaluation of deposition fluxes in two mountain Norway spruce stands with different densities using the extended Canopy Budget Model

open access: yesJournal of Forest Science, 2013
The field study in a mountain forest at Bílý Kříž provides a comparison of element fluxes for two adjacent forest spruce stands of the same age (29 years in 2005) but with different stem densities.
I. Drápelová
doaj   +1 more source

Spatial Patterns in Wet and Dry Deposition of Atmospheric Mercury to Illinois Watersheds

open access: yesE3S Web of Conferences, 2013
An intensive one month atmospheric mercury monitoring campaign was carried out at 8 sites in central Illinois, USA, during summer of 2011 to assess spatial patterns in wet and dry deposition.
Lynam M. M., Hall N. L., Dvonch J. T.
doaj   +1 more source

A New Geochemical Method for Determining the Sources of Atmospheric Particles: A Case Study from Gannan, Northeast China

open access: yesAtmosphere, 2019
The geochemical characteristics of atmospheric deposition can help trace the origin and assess the impacts of pollutants. Northeast China has always been a region seriously affected by sandstorms.
Chenmeng Yang   +5 more
doaj   +1 more source

Dry deposition of reduced nitrogen [PDF]

open access: yesTellus B: Chemical and Physical Meteorology, 1994
The paper reviews the results of measurements of ammonia (NH3) exchange and considers the application of this information in approaches to modelling atmospheric NH3 inputs to ecosystems. Ammonia dry deposition is seen to be highly dependent on land management and the magnitude of agricultural nitrogen inputs.
SUTTON, M. A.   +2 more
openaire   +2 more sources

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