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An operational procedure for mixing height estimation

Technical Report:

Abstract

A model is described in which a mixing height is determined on an operational basis for use in, for example, meteorological dispersion models. The core of the model is a scheme for numerical integration of the convective mising height z{sub i} during daytime hours. The integrated forenoon z{sub i}`s are adjusted when an evident raised inversion is observed in the noon temperature profile. A mechanical mixing height proportional to the friction velocity is determined for all hours. When present, a synoptic-scale lid is further taken into consideration. An operational mixing height z{sub mix} for all hours is chosen from the available canditates. A stability parameter - the Brunt-Vaisala frequency squared - is computed for the layers above z{sub mix} and z{sub i}. (au) (32 refs.).
Publication Date:
Jun 01, 1992
Product Type:
Technical Report
Report Number:
MST-LUFT-A-96-Ed.2
Reference Number:
SCA: 540120; PA: DK-92:001837; SN: 93000917928
Resource Relation:
Other Information: PBD: Jun 1992
Subject:
54 ENVIRONMENTAL SCIENCES; METEOROLOGY; DISPERSIONS; AIR POLLUTION MONITORING; SIMULATION; ATMOSPHERIC CIRCULATION; BOUNDARY LAYERS; TURBULENCE; MIXING; FRICTION FACTOR; COMPUTER CALCULATIONS; HEIGHT; VELOCITY; TEMPERATURE INVERSIONS; 540120; CHEMICALS MONITORING AND TRANSPORT
OSTI ID:
10110785
Research Organizations:
Miljoestyrelsen, Roskilde (Denmark). Luftforureningslab.
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE93752747; ISBN 87-7440-104-1; TRN: DK9201837
Availability:
OSTI; NTIS
Submitting Site:
DK
Size:
183 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Olesen, H R, Jensen, A B, and Brown, N. An operational procedure for mixing height estimation. Denmark: N. p., 1992. Web.
Olesen, H R, Jensen, A B, & Brown, N. An operational procedure for mixing height estimation. Denmark.
Olesen, H R, Jensen, A B, and Brown, N. 1992. "An operational procedure for mixing height estimation." Denmark.
@misc{etde_10110785,
title = {An operational procedure for mixing height estimation}
author = {Olesen, H R, Jensen, A B, and Brown, N}
abstractNote = {A model is described in which a mixing height is determined on an operational basis for use in, for example, meteorological dispersion models. The core of the model is a scheme for numerical integration of the convective mising height z{sub i} during daytime hours. The integrated forenoon z{sub i}`s are adjusted when an evident raised inversion is observed in the noon temperature profile. A mechanical mixing height proportional to the friction velocity is determined for all hours. When present, a synoptic-scale lid is further taken into consideration. An operational mixing height z{sub mix} for all hours is chosen from the available canditates. A stability parameter - the Brunt-Vaisala frequency squared - is computed for the layers above z{sub mix} and z{sub i}. (au) (32 refs.).}
place = {Denmark}
year = {1992}
month = {Jun}
}