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Adverse results of the economic crisis: A study on the emergence of enhanced formaldehyde (HCHO) levels seen from satellites over Greek urban sites

Zyrichidou, I. and Balis, D. and Koukouli, M. and Drosoglou, T. and Bais, Alkiviadis and Gratsea, M. and Gerasopoulos, E. and Liora, N. and Poupkou, A. and Giannaros, C. and Melas, Dimitrios and De Smedt, I. and Van Roozendael, M. and van der A, R. and Boersma, K. F. and Valks, Pieter and Richter, A. (2019) Adverse results of the economic crisis: A study on the emergence of enhanced formaldehyde (HCHO) levels seen from satellites over Greek urban sites. Atmospheric Research (224), pp. 42-51. Elsevier. DOI: 10.1016/j.atmosres.2019.03.017 ISSN 0169-8095

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Official URL: https://www.sciencedirect.com/science/article/pii/S0169809518306227

Abstract

In order to study the years of the outbreak of the financial crisis in Greece, we use a continuous eight-year record (2008-2015) of formaldehyde, HCHO, columns retrieved from the GOME-2/MetOp-A and GOME-2/MetOp-B satellite instruments over two urban Greek regions, Thessaloniki and Athens. A statistical linear regression analysis that was applied to the GOME-2/MetOp-A HCHO time series over both cities revealed positive annual changes. On seasonal basis, the wintertime HCHO change per annum was found to be 7.43 ± 2.26% and 6.13 ± 2.12% over Thessaloniki and Athens, respectively. A corresponding seasonal time series analysis was also applied to tropospheric nitrogen dioxide, NO2, levels. The tropospheric NO2 winter change per annum is shown to be negative, at -3.0 ± 0.13% and -3.94 ± 0.14% over Thessaloniki and Athens, respectively. The satellite HCHO and NO2 observations levels are comparable to collocated ground-based MAX-DOAS measurements. Furthermore, the Comprehensive Air Quality Model with extensions chemical transport model, CAMx CTM, as well as the driving emission inventory in CAMx are used for further investigation of the seasonality of the HCHO concentrations and emissions. The CTM model analysis of the annual HCHO cycle and the winter season anti-correlation between HCHO total columns and surface temperature, mostly over Thessaloniki (R = -0.3), point to the fact that the winter HCHO enhancements, likely connected with enhanced anthropogenic activities, are not being captured by the model. The results of this study indicate a possible enhanced anthropogenic activity during the winter season that was strengthened through the investigation on the origins of the wintertime increase in HCHO columns since the beginning of the economic crisis in the country.

Item URL in elib:https://elib.dlr.de/128961/
Document Type:Article
Title:Adverse results of the economic crisis: A study on the emergence of enhanced formaldehyde (HCHO) levels seen from satellites over Greek urban sites
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zyrichidou, I.AUTHUNSPECIFIED
Balis, D.AUTHUNSPECIFIED
Koukouli, M.AUTHUNSPECIFIED
Drosoglou, T.AUTHUNSPECIFIED
Bais, AlkiviadisAUTH, GRUNSPECIFIED
Gratsea, M.National Observatory of AthensUNSPECIFIED
Gerasopoulos, E.National Observatory of AthensUNSPECIFIED
Liora, N.AUTHUNSPECIFIED
Poupkou, A.aristotle university of thessaloniki, greeceUNSPECIFIED
Giannaros, C.AUTHUNSPECIFIED
Melas, DimitriosUniversity of ThessalonikiUNSPECIFIED
De Smedt, I.BIRA/IASBUNSPECIFIED
Van Roozendael, M.BIRAUNSPECIFIED
van der A, R.KNMIUNSPECIFIED
Boersma, K. F.KNMIUNSPECIFIED
Valks, PieterDLR-IMFUNSPECIFIED
Richter, A.Inst. f. Umweltphysik, Univ. BremenUNSPECIFIED
Date:18 March 2019
Journal or Publication Title:Atmospheric Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.atmosres.2019.03.017
Page Range:pp. 42-51
Publisher:Elsevier
ISSN:0169-8095
Status:Published
Keywords:HCHO, GOME-2 instrument, Urban air pollution, NO2, Biomass burning
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Valks, Dr. Pieter
Deposited On:11 Sep 2019 09:42
Last Modified:05 Dec 2019 17:14

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