Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/14265 |
Resumo: | The weekly dependence of pollutant aerosols in the urban environment of Lisbon (Portugal) is inferred from the records of atmospheric electric field at Portela meteorological station (38°47′N, 9°08′W). Measurements were made with a Bendorf electrograph. The data set exists from 1955 to 1990, but due to the contaminating effect of the radioactive fallout during 1960 and 1970s, only the period between 1980 and 1990 is considered here. Using a relative difference method a weekly dependence of the atmospheric electric field is found in these records, which shows an increasing trend between 1980 and 1990. This is consistent with a growth of population in the Lisbon metropolitan area and consequently urban activity, mainly traffic. Complementarily, using a Lomb–Scargle periodogram technique the presence of a daily and weekly cycle is also found. Moreover, to follow the evolution of theses cycles, in the period considered, a simple representation in a colour surface plot representation of the annual periodograms is presented. Further, a noise analysis of the periodograms is made, which validates the results found. Two datasets were considered: all days in the period, and fair-weather days only. |
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Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependenceAtmospheric ElectricityPollutionThe weekly dependence of pollutant aerosols in the urban environment of Lisbon (Portugal) is inferred from the records of atmospheric electric field at Portela meteorological station (38°47′N, 9°08′W). Measurements were made with a Bendorf electrograph. The data set exists from 1955 to 1990, but due to the contaminating effect of the radioactive fallout during 1960 and 1970s, only the period between 1980 and 1990 is considered here. Using a relative difference method a weekly dependence of the atmospheric electric field is found in these records, which shows an increasing trend between 1980 and 1990. This is consistent with a growth of population in the Lisbon metropolitan area and consequently urban activity, mainly traffic. Complementarily, using a Lomb–Scargle periodogram technique the presence of a daily and weekly cycle is also found. Moreover, to follow the evolution of theses cycles, in the period considered, a simple representation in a colour surface plot representation of the annual periodograms is presented. Further, a noise analysis of the periodograms is made, which validates the results found. Two datasets were considered: all days in the period, and fair-weather days only.IOP Publishing2015-05-04T14:44:22Z2015-05-042014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/14265http://hdl.handle.net/10174/14265eng1. H G Silva, R Conceição, M Melgão, K Nicoll, P B Mendes, M Tlemçani, A H Reis, R G Harrison, “Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence” Environ. Res. Lett. 9 114025, (2014).http://iopscience.iop.org/1748-9326/9/11/114025/hgsilva@uevora.ptrfc@uevora.ptmartamelgao@gmail.comndndtlem@uevora.ptahr@uevora.ptnd390Silva, HugoConceição, RicardoMelgão, MartaNicoll, KeriMendes, P. B.Tlemçani, M.Reis, A. HeitorHarrison, R. G.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:00:30Zoai:dspace.uevora.pt:10174/14265Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:07:35.389112Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence |
title |
Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence |
spellingShingle |
Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence Silva, Hugo Atmospheric Electricity Pollution |
title_short |
Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence |
title_full |
Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence |
title_fullStr |
Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence |
title_full_unstemmed |
Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence |
title_sort |
Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence |
author |
Silva, Hugo |
author_facet |
Silva, Hugo Conceição, Ricardo Melgão, Marta Nicoll, Keri Mendes, P. B. Tlemçani, M. Reis, A. Heitor Harrison, R. G. |
author_role |
author |
author2 |
Conceição, Ricardo Melgão, Marta Nicoll, Keri Mendes, P. B. Tlemçani, M. Reis, A. Heitor Harrison, R. G. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Silva, Hugo Conceição, Ricardo Melgão, Marta Nicoll, Keri Mendes, P. B. Tlemçani, M. Reis, A. Heitor Harrison, R. G. |
dc.subject.por.fl_str_mv |
Atmospheric Electricity Pollution |
topic |
Atmospheric Electricity Pollution |
description |
The weekly dependence of pollutant aerosols in the urban environment of Lisbon (Portugal) is inferred from the records of atmospheric electric field at Portela meteorological station (38°47′N, 9°08′W). Measurements were made with a Bendorf electrograph. The data set exists from 1955 to 1990, but due to the contaminating effect of the radioactive fallout during 1960 and 1970s, only the period between 1980 and 1990 is considered here. Using a relative difference method a weekly dependence of the atmospheric electric field is found in these records, which shows an increasing trend between 1980 and 1990. This is consistent with a growth of population in the Lisbon metropolitan area and consequently urban activity, mainly traffic. Complementarily, using a Lomb–Scargle periodogram technique the presence of a daily and weekly cycle is also found. Moreover, to follow the evolution of theses cycles, in the period considered, a simple representation in a colour surface plot representation of the annual periodograms is presented. Further, a noise analysis of the periodograms is made, which validates the results found. Two datasets were considered: all days in the period, and fair-weather days only. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-01-01T00:00:00Z 2015-05-04T14:44:22Z 2015-05-04 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/14265 http://hdl.handle.net/10174/14265 |
url |
http://hdl.handle.net/10174/14265 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1. H G Silva, R Conceição, M Melgão, K Nicoll, P B Mendes, M Tlemçani, A H Reis, R G Harrison, “Atmospheric electric field measurements in urban environment and the pollutant aerosol weekly dependence” Environ. Res. Lett. 9 114025, (2014). http://iopscience.iop.org/1748-9326/9/11/114025/ hgsilva@uevora.pt rfc@uevora.pt martamelgao@gmail.com nd nd tlem@uevora.pt ahr@uevora.pt nd 390 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
IOP Publishing |
publisher.none.fl_str_mv |
IOP Publishing |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799136560328736768 |