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Joint application of Doppler Lidar and differential absorption lidar to estimate the atomic mercury flux from a chlor-alkali plant

Bennett, M; Edner, Hans LU ; Grönlund, Rasmus LU ; Sjöholm, Mikael LU ; Svanberg, Sune LU and Ferrara, R (2006) In Atmospheric Environment 40(4). p.664-673
Abstract
We have combined differential absorption lidar (DIAL) measurements of mercury concentrations downwind of a chloralkali plant (Rosignano Solvay) with measurements of wind profiles made with a Doppler Lidar based on modern fibreoptic technology. Since the flux of pollutant is equal to the cross-wind integral of the product of concentration and wind speed, this should permit us to make a more precise estimate of the fugitive emission of mercury from the plant than could be obtained by using anemometer measurements of the wind. The flux was estimated to be 54g Hgh(-1) using an anemometer on the plant building; 49g Hgh(-1) using an anemometer on a nearby 10m mast; and 48g Hgh(-1) using wind speed corrections estimated from the Doppler Lidar... (More)
We have combined differential absorption lidar (DIAL) measurements of mercury concentrations downwind of a chloralkali plant (Rosignano Solvay) with measurements of wind profiles made with a Doppler Lidar based on modern fibreoptic technology. Since the flux of pollutant is equal to the cross-wind integral of the product of concentration and wind speed, this should permit us to make a more precise estimate of the fugitive emission of mercury from the plant than could be obtained by using anemometer measurements of the wind. The flux was estimated to be 54g Hgh(-1) using an anemometer on the plant building; 49g Hgh(-1) using an anemometer on a nearby 10m mast; and 48g Hgh(-1) using wind speed corrections estimated from the Doppler Lidar measurements. Because of difficulties with the range resolution of the Doppler Lidar, the precision of this estimate was not as good as it should have been, though the difference from the rooftop anemometer remains statistically significant. Corrections of this magnitude are irrelevant to the Rosignano plant, where the emission rate varies strongly with the meteorological conditions. Where a precise estimate of a steady flux is required, however, reliable measurements of the wind profile in the wake of the source are essential. Doppler Lidar provides a possible method for acquiring such measurements. (c) 2005 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
building-affected flow, wind measurements, EMECAP, emissions, fugitive, OCT, optical coherence tomography, DIAL, fibre-optics
in
Atmospheric Environment
volume
40
issue
4
pages
664 - 673
publisher
Elsevier
external identifiers
  • wos:000235764300007
  • scopus:29444452240
ISSN
1352-2310
DOI
10.1016/j.atmosenv.2005.09.078
language
English
LU publication?
yes
id
06bdea90-7506-419d-81ea-a160b80b8b44 (old id 416911)
date added to LUP
2007-09-25 15:57:38
date last changed
2019-04-02 02:40:16
@article{06bdea90-7506-419d-81ea-a160b80b8b44,
  abstract     = {We have combined differential absorption lidar (DIAL) measurements of mercury concentrations downwind of a chloralkali plant (Rosignano Solvay) with measurements of wind profiles made with a Doppler Lidar based on modern fibreoptic technology. Since the flux of pollutant is equal to the cross-wind integral of the product of concentration and wind speed, this should permit us to make a more precise estimate of the fugitive emission of mercury from the plant than could be obtained by using anemometer measurements of the wind. The flux was estimated to be 54g Hgh(-1) using an anemometer on the plant building; 49g Hgh(-1) using an anemometer on a nearby 10m mast; and 48g Hgh(-1) using wind speed corrections estimated from the Doppler Lidar measurements. Because of difficulties with the range resolution of the Doppler Lidar, the precision of this estimate was not as good as it should have been, though the difference from the rooftop anemometer remains statistically significant. Corrections of this magnitude are irrelevant to the Rosignano plant, where the emission rate varies strongly with the meteorological conditions. Where a precise estimate of a steady flux is required, however, reliable measurements of the wind profile in the wake of the source are essential. Doppler Lidar provides a possible method for acquiring such measurements. (c) 2005 Elsevier Ltd. All rights reserved.},
  author       = {Bennett, M and Edner, Hans and Grönlund, Rasmus and Sjöholm, Mikael and Svanberg, Sune and Ferrara, R},
  issn         = {1352-2310},
  keyword      = {building-affected flow,wind measurements,EMECAP,emissions,fugitive,OCT,optical coherence tomography,DIAL,fibre-optics},
  language     = {eng},
  number       = {4},
  pages        = {664--673},
  publisher    = {Elsevier},
  series       = {Atmospheric Environment},
  title        = {Joint application of Doppler Lidar and differential absorption lidar to estimate the atomic mercury flux from a chlor-alkali plant},
  url          = {http://dx.doi.org/10.1016/j.atmosenv.2005.09.078},
  volume       = {40},
  year         = {2006},
}