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A multi-year comparison of PM{sub 2.5} and AOD for the Helsinki region

Journal Article:

Abstract

We studied the relationship between satellite-based aerosol optical depth (AOD) and particulate matter (PM{sub 2.5}) which is aerosol mass concentration measured on the ground. PM{sub 2.5} data originated from four sites located near each other within the Helsinki region, Finland. Depending on the site, the data covered between two and seven years. We investigated how temporal PM{sub 2.5} averaging affects the correlation between PM{sub 2.5} and AOD. In addition, we studied the seasonality of the correlation. The time-averaging increased the correlation coefficient as compared with one-hour PM{sub 2.5} measurements. Regarding the monthly averages of PM{sub 2.5} and AOD, the correlation coefficients were between 0.57 and 0.91. We also studied PM{sub 2.5} and AOD gradients between an urban and a rural site. Monthly averages at the urban site were regularly higher than those at the rural site. However, the seasonal behaviour was similar. (orig.)
Authors:
Natunen, A; Arola, A; Mielonen, T; Huttunen, J; Komppula, M; [1]  Lehtinen, K E. J. [2] 
  1. Finnish Meteorological Inst., Kuopio (Finland)
  2. Kuopio Univ. (Finland)
Publication Date:
Jul 01, 2010
Product Type:
Journal Article
Resource Relation:
Journal Name: Boreal Environment Research; Journal Volume: 15; Journal Issue: 6; Other Information: ISSN 1797-2469; 32 refs.
Subject:
54 ENVIRONMENTAL SCIENCES; AEROSOLS; OPTICAL PROPERTIES; RADIATION MONITORING; RADIATIONS; SATELLITES; PARTICULATES; CONCENTRATION RATIO; GROUND LEVEL; SEASONAL VARIATIONS; REGIONAL ANALYSIS; COMPARATIVE EVALUATIONS
OSTI ID:
1010368
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1239-6095; TRN: FI1103027
Availability:
Available in fulltext at
Submitting Site:
FI
Size:
page(s) 544-552
Announcement Date:
Apr 04, 2011

Journal Article:

Citation Formats

Natunen, A, Arola, A, Mielonen, T, Huttunen, J, Komppula, M, and Lehtinen, K E. J. A multi-year comparison of PM{sub 2.5} and AOD for the Helsinki region. Finland: N. p., 2010. Web.
Natunen, A, Arola, A, Mielonen, T, Huttunen, J, Komppula, M, & Lehtinen, K E. J. A multi-year comparison of PM{sub 2.5} and AOD for the Helsinki region. Finland.
Natunen, A, Arola, A, Mielonen, T, Huttunen, J, Komppula, M, and Lehtinen, K E. J. 2010. "A multi-year comparison of PM{sub 2.5} and AOD for the Helsinki region." Finland.
@misc{etde_1010368,
title = {A multi-year comparison of PM{sub 2.5} and AOD for the Helsinki region}
author = {Natunen, A, Arola, A, Mielonen, T, Huttunen, J, Komppula, M, and Lehtinen, K E. J.}
abstractNote = {We studied the relationship between satellite-based aerosol optical depth (AOD) and particulate matter (PM{sub 2.5}) which is aerosol mass concentration measured on the ground. PM{sub 2.5} data originated from four sites located near each other within the Helsinki region, Finland. Depending on the site, the data covered between two and seven years. We investigated how temporal PM{sub 2.5} averaging affects the correlation between PM{sub 2.5} and AOD. In addition, we studied the seasonality of the correlation. The time-averaging increased the correlation coefficient as compared with one-hour PM{sub 2.5} measurements. Regarding the monthly averages of PM{sub 2.5} and AOD, the correlation coefficients were between 0.57 and 0.91. We also studied PM{sub 2.5} and AOD gradients between an urban and a rural site. Monthly averages at the urban site were regularly higher than those at the rural site. However, the seasonal behaviour was similar. (orig.)}
journal = {Boreal Environment Research}
issue = {6}
volume = {15}
place = {Finland}
year = {2010}
month = {Jul}
}