Published June 2007 | Version v1
Miscellaneous Open

Estimation of seasonal atmospheric stability and mixing height by using different schemes

  • 1. Mathematics and Theoretical Physics Dept., NRC, AEA, Cairo (Egypt)

Description

Different atmospheric stability schemes were used to characterize the plume growth (dispersion coefficients σ) in the lateral and vertical directions to determine the concentration distribution of pollutants through the PBL. The PBL is the region in which surface friction has a large effect on the mixing of pollutants. It is also suffer large fluctuation in temperature and wind and its depth (mixing depth) changes over a diurnal cycle. In this study, four months of surface meteorological parameters were used (to represent different seasons) to determine seasonal stability, classification. Five different stability schemes were estimated based on temperature gradient, standard deviation of the horizontal wind direction fluctuation, gradient and Bulk Richardson numbers and Monin-Obukhov length. Friction velocity, (u*) for each stability scheme was estimated for characterizing the hourly, mixing height for each stability class. Also, plume rise was estimated for each stability class depending on the availability of meteorological parameters

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Additional details

Publishing Information

Imprint Title
Proceedings of the Eigth Radiation Physics and Protection Conference (RPC-2006)
Imprint Pagination
478 p.
Journal Page Range
p. 381-392
Report number
INIS-EG--192

Conference

Title
8. Radiation Physics and Protection Conference
Acronym
RPC-2006
Dates
12-15 Nov 2006
Place
Beni Sueif (Egypt)

INIS

Country of Publication
Egypt
Country of Input or Organization
Egypt
INIS RN
38092987
Subject category
ENVIRONMENTAL SCIENCES;
Resource subtype / Literary indicator
Conference
Quality check status
Yes
Descriptors DEI
CONCENTRATION RATIO; EARTH ATMOSPHERE; FRICTION; METEOROLOGY; PLUMES; POLLUTANTS; RICHARDSON NUMBER; SEASONS; STABILITY; TEMPERATURE GRADIENTS; WIND;
Descriptors DEC
DIMENSIONLESS NUMBERS;

Optional Information

Lead record
x4j0t-mc398
Notes
Imprint:Available Submitted to the Arab Journal of Nuclear Sciences and Applications, ISSN 1110-0451, CODEN: AJNADV, Special Issue, Vol. 40, Jun 2007