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1 edition of On the use of monitored air concentrations to infer dry deposition (1985) found in the catalog.

On the use of monitored air concentrations to infer dry deposition (1985)

On the use of monitored air concentrations to infer dry deposition (1985)

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  • 10 Currently reading

Published by United States Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Air Resources Laboratory in Silver Spring, Md .
Written in English

    Subjects:
  • Acid deposition.,
  • Air -- Pollution.,
  • Air -- Analysis.

  • Edition Notes

    StatementB.B. Hicks ... [et al.].
    SeriesNOAA technical memorandum ERL ARL -- 141., ATDL contribution file -- 84/24., ATDL contribution file -- no. 84/24.
    ContributionsHicks, B. B., Air Resources Laboratory (U.S.)
    The Physical Object
    Paginationx, 65 p. :
    Number of Pages65
    ID Numbers
    Open LibraryOL17670535M

    @article{osti_, title = {Critique of methods to measure dry deposition workshop summary}, author = {Hicks, B B and Wesely, M L and Durham, J L}, abstractNote = {At the workshop on dry deposition methodology, held December 4 and 5, , at the Argonne National Laboratory in Argonne, Illinois, dry deposition measurement techniques were assessed for . Air Quality -- Nitrogen Deposition. A dust cloud rises from a field being plowed in the Central Valley of California. NPS Photo. Nitrogen is essential for all living things. It is found in solid earth and in the atmosphere. Small amounts of nitrogen move in a dynamic cycle involving the atmosphere, oceans, lakes, streams, plants, and animals.

    Chapter 3: Air Dispersion and Deposition Modeling September U.S. EPA Region 6 U.S. EPA Multimedia Planning and Permitting Division Office of Solid Waste Center for Combustion Science and Engineering This chapter provides guidance on criteria to consider when selecting an air model to use to support a risk assessment. A revised parameterization for gaseous dry deposition in air-quality models L. Zhang, J. R. Brook, R. Vet To cite this version: L. Zhang, J. R. Brook, R. Vet. A revised parameterization for gaseous dry deposition in air-quality models. Atmospheric Chemistry and Physics Discussions, European Geosciences Union, , 3 (2), pp

    Acid deposition Acidic air pollution that falls to the ground as either particles (dry deposition), or solutions in rain (wet deposition). The latter is commonly known as "acid rain". Produced from the atmospheric build-up of NOx and SO 2. Air pollution. air-borne substances, either not found in the normal composition of air or at above normal levels, that can harm living organisms and/or other materials or resources air pollution index a description pf the concentration of specific types of air pollution present in the ambient air; known as the "PSI Index", pollutant standards index in the U.S.


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On the use of monitored air concentrations to infer dry deposition (1985) Download PDF EPUB FB2

Get this from a library. On the use of monitored air concentrations to infer dry deposition (). [B B Hicks; Air Resources Laboratory (U.S.),;].

On the use of monitored air concentrations to infer dry deposition. NOAA Tech. Memo. ERLARL, 65 pp. Huebert, B. and Robert, C. () The dry deposition of nitric acid to grass.

Journal of Geophysical Resea Cited by: On the use of monitored air concentrations to infer dry deposition, NOAA Technical Memorandum ERL ARL, Silver Spring, MD. Google Scholar Hicks, B. B., and P. Liss. Cited by: Pirrone, N., G.J.

Keeler and T.M. Holsen () Dry Deposition of Trace Elementsover Lake Michigan: A Hybrid-Receptor Deposition Modeling Approach. Environmental Science and Technology, 29, – Google ScholarAuthor: G.

Kallos, O. Kakaliagou, A. Voudouri, I. Pytharoulis, N. Pirrone, L. Forlano, J. Pachyna. Testing the use of passive sampling systems for understanding air mercury concentrations and dry deposition across Florida, USA area has been reported to have low air concentrations, wet deposition values, reported by the Mercury Deposition Network, are some of the highest in the United States, and little is known about the magnitude of dry Cited by: Unfortunately, this book can't be printed from the OpenBook.

If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF. The Multilayer Model (MLM) has been used for many years to infer dry deposition fluxes from measured trace species concentrations and standard.

Dynamics of the plume containing nanometric-sized particles ejected into the atmospheric air following laser-induced breakdown on the exit surface of a CaF2 optical window. An atmospheric monitoring network was operated throughout the South Coast Air Basin in the greater Los Angeles area during the year The primary objective of this study was to measure the spatial and temporal concentration distributions of atmospheric gas phase and particulate phase acids and bases in support of the California Air Resources Board's dry Cited by: dominated by dry deposition or in the case of high-elevation systems, although the use of passive samplers can extend the number of sites monitored (Schmitt et al., ).

Deposition velocity values used in calculations are often uncertain Erisman et al. (), Lovett (), Lovett and Lindberg (), Wesely and Hicks ( Cited by: surface with its ambient concentrations, i.e., a species’ flux is a product of its Vd and its concentration; and Vd values are commonly estimated using a dry deposition scheme/parameteri-zation (Wesely and Hicks, ).

Developing a dry deposition scheme for Hg that can be used for regional/global Hg models. A deposition velocity of 1 cm/sec is representative of dry depo- sition of S02 (whose dry deposition rate is higher than that of most other pollutants) while a deposition velocity of cm/sec is represen- tative of wet deposition of sulfates for rainfall of somewhat more than 10 mm/hr (see e.g.

McMahon, Denison and Fleming, ). v Annual average PM IO mass concentrations within the South Coast Air Basin ranged from g m-3 along the coast to p.g m at Rubidoux, the farthest inland monitoring site.

Five major aerosol components (carbonaceous material, N03", S04', NHt and soil-related material) accounted for greater than 80% of the annual average PM 10 mass concentration at all on.

For example, the resistance to gas uptake through stomaca of plant leaves can be approximated according to atmospheric stability categories. Recommendations. Until reliable methods suitable for directly monitoring dry deposition are developed, use of monitored concentrations may be the only alternative that is practical yet sufficiently accurate.

The dry deposition velocity is defined as the ratio of the deposition flux (mass/area/time) to the air concentration (mass/volume): V d = D dry / C Dry removal is computed when the bottom of the puff or the particle center position is within the surface layer (Z sfc), defined in the model as the top of the second meteorological data level.

Chapter 3: Air Dispersion and Deposition Modeling August U.S. EPA Region 6 U.S. EPA Multimedia Planning and Permitting Division Office of Solid Waste Center for Combustion Science and Engineering Model (ISCST3).

ISCST3 requires the use of the following information for input into the model, and consideration of output file development.

The estimated dry deposition agrees very well with limited surrogate-surface dry deposition measurements of GOM and PBM, and also agrees with litterfall mercury measurements conducted at multiple locations in eastern and central North America.

This study suggests that GEM contributes much more than GOM+PBM to the total dry deposition at the ma. modeling that involves indirect estimation of dry deposition rates on the basis of routinely measured air concentrations and meteorological parameters. The method is based on an assumed steady-state relationship F = V d C, where the dry deposition flux or rate (F) is a product of the dry deposition velocity (V d) and the concentration (C) of an.

average deposition velocities for missing MLM simulations (Bowker et al., ). This method is still in use and provides estimates of trends in deposition. MLM-derived dry deposition values are combined with NADP wet deposition measurements to estimate annual total deposition.

ADVERTISEMENTS: Some of the major differences between wet and dry deposition are as follows: Wet Deposition: 1. It is the input of nutrient in an ecosystem in dissolved state. ADVERTISEMENTS: 2. Wet deposition usually occurs through rainfall.

The input enters the atmosphere first usually in the form of gases. Dry Deposition: 1. It is [ ]. CASTNET dry deposition is determined using an infer-ential method of measured ambient concentrations and modeled deposition velocity, which creates a source of uncertainty in these estimations.

Deposition of pollut-ants by dry processes is difficult to measure directly and consequently has proven impractical for use in large-scale.the ability to see is decreasing by the acidity of the air (haze and smog created) How does the EPA track changes in the environment caused by acid rain?

They collect air and water samples and measure them for various characteristics like pH and chemical composition, and they research the effects of acid decomposition on human-made materials.Errors in predictions of air concentrations or deposition may be best explained by meteorological input uncertainty and conservatism in the PRIME algorithm used to account for building downwash.

In general, AERMOD was found to be a useful screening tool for modeling the dispersion and deposition of PFO in air near a manufacturing by: 9.