| 1. Identificação | ||||
| Tipo de Referência | Artigo em Revista Científica (Journal Article) | |||
| Site | mtc-m21c.sid.inpe.br | |||
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identificador | 8JMKD3MGP3W34R/435ERFL | |||
| Repositório | sid.inpe.br/mtc-m21c/2020/08.24.12.39 (acesso restrito) | |||
| Última Atualização | 2020:08.24.12.39.38 (UTC) simone | |||
| Repositório de Metadados | sid.inpe.br/mtc-m21c/2020/08.24.12.39.38 | |||
| Última Atualização dos Metadados | 2022:01.04.01.35.19 (UTC) administrator | |||
| DOI | 10.5194/amt-13-4051-2020 | |||
| ISSN | 1867-1381 | |||
| Chave de Citação | PaulSJKMCMGDCNMP:2020:EvFiNa | |||
| Título | Evaluation of a field-deployable Nafion™-based air-drying system for collecting whole air samples and its application to stable isotope measurements of CO2  | |||
| Ano | 2020 | |||
| Mês | July | |||
| Data de Acesso | 10 maio 2024 | |||
| Tipo de Trabalho | journal article | |||
| Tipo Secundário | PRE PI | |||
| Número de Arquivos | 1 | |||
| Tamanho | 4845 KiB | |||
| 2. Contextualização | ||||
| Autor | 1 Paul, Dipayan 2 Scheeren, Hubertus A. 3 Jensen, Henk G. 4 Kers, Bert A. M. 5 Miller, John B. 6 Crotwell, Andrew M. 7 Michel, Sylvia E. 8 Gatti, Luciana Vanni 9 Domingues, Lucas Gatti 10 Correia, Caio Silvestre de Carvalho 11 Neves, Raiane Aparecida Lopes 12 Meijer, Harro A. J. 13 Peters, Wouter | |||
| Grupo | 1 2 3 4 5 6 7 8 COCST-COCST-INPE-MCTIC-GOV-BR 9 COCST-COCST-INPE-MCTIC-GOV-BR 10 CST-CST-SESPG-INPE-MCTIC-GOV-BR 11 COCST-COCST-INPE-MCTIC-GOV-BR | |||
| Afiliação | 1 University of Groningen 2 University of Groningen 3 University of Groningen 4 University of Groningen 5 National Oceanic and Atmospheric Administration (NOAA) 6 National Oceanic and Atmospheric Administration (NOAA) 7 University of Colorado 8 Instituto Nacional de Pesquisas Espaciais (INPE) 9 Instituto Nacional de Pesquisas Espaciais (INPE) 10 Instituto Nacional de Pesquisas Espaciais (INPE) 11 Instituto Nacional de Pesquisas Espaciais (INPE) 12 Wageningen University 13 University of Groningen | |||
| Endereço de e-Mail do Autor | 1 d.paul@rug.nl 2 h.a.scheeren@rug.nl 3 4 5 6 7 8 luciana.gatti@inpe.br 9 lgtdomingues@gmail.com 10 11 raiane.neves@inpe.br | |||
| Revista | Atmospheric Measurement Techniques | |||
| Volume | 13 | |||
| Número | 7 | |||
| Páginas | 4051-4064 | |||
| Histórico (UTC) | 2020-08-24 12:40:54 :: simone -> administrator :: 2020 2022-01-04 01:35:19 :: administrator -> simone :: 2020 | |||
| 3. Conteúdo e estrutura | ||||
| É a matriz ou uma cópia? | é a matriz | |||
| Estágio do Conteúdo | concluido | |||
| Transferível | 1 | |||
| Tipo do Conteúdo | External Contribution | |||
| Tipo de Versão | publisher | |||
| Resumo | Atmospheric flask samples are either collected at atmospheric pressure by opening a valve of a pre-evacuated flask or pressurized with the help of a pump to a few bar above ambient pressure. Under humid conditions, there is a risk that water vapor in the sample leads to condensation on the walls of the flask, notably at higher than ambient sampling pressures. Liquid water in sample flasks is known to affect the C2 mixing ratios and also alters the isotopic composition of oxygen (O-17 and O-18) in CO2 via isotopic equilibration. Hence, for accurate determination of CO2 mole fractions and its stable isotopic composition, it is vital to dry the air samples to a sufficiently low dew point before they are pressurized in flasks to avoid condensation. Moreover, the drying system itself should not influence the mixing ratio and the isotopic composition of CO2 or that of the other constituents under study. For the Airborne Stable Isotopes of Carbon from the Amazon (ASICA) project focusing on accurate measurements of CO2 and its singly substituted stable isotopologues over the Amazon, an airdrying system capable of removing water vapor from air sampled at a dew point lower than -2 degrees C, flow rates up to 12 L min(-1) and without the need for electrical power was needed. Since to date no commercial air-drying device that meets these requirements has been available, we designed and built our own consumable-free, power-free and portable drying system based on multitube Nafion (TM) gas sample driers (Perma Pure, Lakewood, USA). The required dry purge air is provided by feeding the exhaust flow of the flask sampling system through a dry molecular sieve (type 3A) cartridge. In this study we describe the systematic evaluation of our NafionTm-based air sample dryer with emphasis on its performance concerning the measurements of atmospheric CO2 mole fractions and the three singly substituted isotopologues of CO2 ((OCO)-O-16-C-13-O-16, (OCO)-O-16-C-12-O-17 and (OCO)-O-16-C-12-O-18) as well as the trace gas species CH4, CO, N2O and SF6. Experimental results simulating extreme tropical conditions (saturated air at 33 degrees C) indicated that the response of the air dryer is almost instantaneous and that approximately 85L of air, containing up to 4 % water vapor, can be processed staying below a -2 degrees C dew point temperature (at 275 kPa). We estimated that at least eight flasks can be sampled (at an overpressure of 275 kPa) with a water vapor content below -2 degrees C dew point temperature during a typical flight sampling up to 5 km altitude over the Amazon, whereas the remaining samples would stay well below 5 degrees C dew point temperature (at 275 kPa). The performance of the air dryer on measurements of CO2, CH4, CO, N2O, and SF6 and the CO2 isotopologues (OOO)-O-16-O-13-O-16 and (OCO)-O-16-C-12-O-18 was tested in the laboratory sim- ulating real sampling conditions by compressing humidified air from a calibrated cylinder, after being dried by the air dryer, into sample flasks. We found that the mole fraction and the isotopic composition difference between the different test conditions (including the dryer) and the base condition (dry air, without dryer) remained well within or very close to, in the case of N2O, the World Meteorological Organization recommended compatibility goals for independent measurement programs, proving that the test condition induced no significant bias on the sample measurements. | |||
| Área | CST | |||
| Arranjo 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > COCST > Evaluation of a... | |||
| Arranjo 2 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > CST > Evaluation of a... | |||
| Conteúdo da Pasta doc | acessar | |||
| Conteúdo da Pasta source | não têm arquivos | |||
| Conteúdo da Pasta agreement |
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| 4. Condições de acesso e uso | ||||
| Idioma | en | |||
| Arquivo Alvo | paul_evaluation.pdf | |||
| Grupo de Usuários | simone | |||
| Grupo de Leitores | administrator simone | |||
| Visibilidade | shown | |||
| Permissão de Leitura | deny from all and allow from 150.163 | |||
| Permissão de Atualização | não transferida | |||
| 5. Fontes relacionadas | ||||
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3F3T29H 8JMKD3MGPCW/449U4PL | |||
| Lista de Itens Citando | sid.inpe.br/bibdigital/2013/10.19.20.40 3 sid.inpe.br/bibdigital/2021/03.06.05.18 2 | |||
| Divulgação | WEBSCI; PORTALCAPES; SCOPUS. | |||
| Acervo Hospedeiro | urlib.net/www/2017/11.22.19.04 | |||
| 6. Notas | ||||
| Campos Vazios | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Controle da descrição | ||||
| e-Mail (login) | simone | |||
| atualizar | ||||