| |
|
|
| Registros recuperados : 21 | |
| 6. |  | ZAHN, E.; DIAS, N. L.; ARAUJO, A.; SÁ, L. D. A.; SÖRGEL, M.; TREBS, I.; WOLFF, S.; MANZI, A. Scalar turbulent behavior in the roughness sublayer of an Amazonian forest. Atmospheric Chemistry and Physics, v. 16, p. 11349-11366, 2016.| Biblioteca(s): Embrapa Amazônia Oriental. |
|    |
| 8. | | KUNERT, N.; APARECIDO, L. M. T.; WOLFF, S.; HIGUCHI, N.; SANTOS, J. dos; ARAUJO, A. C. de; TRUMBORE, S. A revised hydrological model for the Central Amazon: The importanceof emergent canopy trees in the forest water budget. Agricultural and Forest Meteorology, v. 239, p. 47-57, May 2017.| Biblioteca(s): Embrapa Amazônia Oriental. |
|  |
| 9. | | NÖLSCHER, A. C.; YAÑEZ-SERRANO, A. M.; WOLFF, S.; ARAUJO, A. C. de; LAVRIC, J. V.; KESSELMEIER, J.; WILLIAMS, J. Unexpected seasonality in quantity and composition of Amazon rainforest air reactivity. Nature Communications, v. 7, art. n. 10383, 22 Jan. 2016.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 10. | | CHOR, T. L.; DIAS, N. L.; ARAUJO, A. C. de; WOLFF, S.; ZAHN, E.; MANZI, A.; TREBS, I.; SÁ, M. O.; TEIXEIRA, P. R.; SÖRGEL, M. Flux-variance and flux-gradient relationships in the roughnesssublayer over the Amazon forest. Agricultural and Forest Meteorology, v. 239, p. 213-222, May 2017.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 12. | | MALHI, Y.; MELACK, J.; GATTI, L. V.; OMETTO, J.; KESSELMEIER, J.; WOLFF, S.; ARAGÃO, L. E. O.; COSTA, M.; SALESKA, S.; PANGALA, S. R.; BASSO, L. S.; RIZZO, L.; ARAUJO, A. C. de; RESTREPO-COUPE, N. Biogeochemical cycles of the Amazon. In: SCIENCE panel for the Amazon: Amazon assessment report 2021: part I: The Amazon as a regional entity of the Earth system. New York, NY: United Nations Sustainable Development Solutions Network, 2021. Cap. 6, pag. irregular.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 13. | | OLVEIRA, P. E. S.; ACEVEDO, O. C.; SÖRGEL, M.; TSOKANKUNKU, A.; WOLFF, S.; ARAUJO, A. C. de; SOUZA, R. A. F.; SÁ, M. O.; MANZI, A. O.; ANDREAE, M. O. Nighttime wind and scalar variability within and above an Amazonian canopy. Atmospheric Chemistry and Physics, v. 18, n. 5, p. 3083-3099, 2018.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 14. | | RINGSDORF, A.; EDTBAUER, A.; ARELLANO, J. V.-G. de; PFANNERSTILL, E. Y.; GROMOV, S.; KUMAR, V.; POZZER, A.; WOLFF, S.; TSOKANKUNKU, A.; SOERGEL, M.; SÁ, M. O.; ARAUJO, A. C. de; DITAS, F.; POEHLKER, C.; LELIEVELD, J.; WILLIAMS, J. Inferring the diurnal variability of OH radical concentrations over the Amazon from BVOC measurements. Scientific Reports, v. 13, Article number: 14900, 2023.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 15. | | KOMIYA, S.; ARAUJO, A. C. de; LAVRIC, J. V.; NELSON, B.; SÖRGEL, M.; WEBER, B.; BOTIA, S.; GOMES-ALVES, E.; WALTER, D.; SÁ, M. de O.; WOLFF, S.; PINHO, D. M.; KONDO, F.; TRUMBORE, S. Seasonal and interannual variations of carbon fluxes at the Amazon Tall Tower Observatory site in 2014-2019. In: EGU GENERAL ASSEMBLY, 2022, Viena. Programme. [S.l.]: EGU, 2022.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 16. | | PFANNERSTILL, E. Y.; REIJRINK, N. G.; EDTBAUER, A.; RINGSDORF, A.; ZANNONI, N.; ARAUJO, A. C. de; DITAS, F.; HOLANDA, B. A.; SÁ, M. O.; TSOKANKUNKU, A.; WALTER, D.; WOLFF, S.; LAVRIC, J. V.; PÖHLKER, C.; SÖRGEL, M.; WILLIAMS, J. Total OH reactivity over the Amazon rainforest: variability with temperature, wind, rain, altitude, time of day, season, and an overall budget closure. Atmospheric Chemistry and Physics, v. 21, n. 8, p. 6231-6256, 2021.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 17. | | PFANNERSTILL, E. Y.; NÖLSCHER, A. C.; YÁÑEZ-SERRANO, A. M.; BOURTSOUKIDIS, E.; KEBEL, S.; JANSSEN, R. H. H.; TSOKANKUNKU, A.; WOLFF, S.; SÖRGEL, M.; SÁ, M. O.; ARAUJO, A. C. de; WALTER, D.; LAVRIC, J.; DIAS-JUNIOR, C. Q.; KESSELMEIER, J.; WILLIAMS, J. Total OH reactivity changes over the Amazon rainforest during an El Niño event. Frontiers in Forests and Global Change, v. 1, Article 12, Dec. 2018.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 18. | | PÖHLKER, M. L.; PÖHLKER, C.; DITAS, F.; KLIMACH, T.; ANGELIS, I. H. de; ARAUJO, A. C. de; BRITO, J.; CARBONE, S.; CHENG, Y.; CHI, X.; DITZ, R.; GUNTHE, S. S.; KESSELMEIER, J.; KÖNEMANN, T.; LAVRIC, J. V.; MARTIN, S. T.; MIKHAILOV, E.; MORAN-ZULOAGA, D.; ROSE, D.; SATURNO, J.; SU, H.; THALMAN, R.; WALTER, D.; WANG, J.; WOLFF, S.; BARBOSA, H. M. J.; ARTAXO, P.; ANDREAE, M. O.; PÖSCHL, U. Long-term observations of cloud condensation nuclei in the Amazon rain forest - Part 1: Aerosol size distribution, hygroscopicity, and new model parametrizations for CCN prediction. Atmospheric Chemistry and Physics, v. 16, n. 24, p. 15709-15740, Dec. 2016. Na publicação: Araújo, A.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 19. | | PÖHLKER, M. L.; DITAS, F.; SATURNO, J.; KLIMACH, T.; ANGELIS, I. H. de; ARAUJO, A. C. de; BRITO, J.; CARBONE, S.; CHENG, Y.; CHI, X.; DITZ, R.; GUNTHE, S. S.; HOLANDA, B. A.; KANDLER, K.; KESSELMEIER, J.; KÖNEMANN, T.; KRÜGER, O. O.; LAVRIC, J. V.; MARTINS, S. T.; MIKHAILOV, E.; MORAN-ZULOAGA, D.; RIZZO, L. V.; ROSE, D.; SU, H.; THALMAN, R.; WALTER, D.; WANG, J.; WOLFF, S.; BARBOSA, H. M. J.; ARTAXO, P.; ANDREAE, M. O.; PÖSCHL, U.; PÖHLKER, C. Long-term observations of cloud condensation nuclei over the Amazon rain forest - Part 2: Variability and characteristics of biomass burning, long-range transport, and pristine rain forest aerosols. Atmospheric Chemistry and Physics, v. 18, n. 14, p. 10289-10331, 2018.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 20. | | ANDREAE, M. O.; ACEVEDO, O. C.; ARAUJO, A.; ARTAXO, P.; BARBOSA, C. G. G.; BARBOSA, H. M. J.; BRITO, J.; CARBONE, S.; CHI, X.; CINTRA, B. B. L.; SILVA, N. F. da; DIAS, N. L.; DIAS-JÚNIOR, C. Q.; DITAS, F.; DITZ, R.; GODOI, A. F. L.; GODOI, R. H. M.; HEIMANN, M.; HOFFMANN, T.; KESSELMEIER, J.; KÖNEMANN, T.; KRÜGER, M. L.; LAVRIC, J. V.; MANZI, A. O.; MORAN-ZULOAGA, D.; NÖLSCHER, A. C.; NOGUEIRA, D. S.; PIEDADE, M. T. F.; PÖHLKER, C.; PÖSCHL, U.; RIZZO, L. V.; RO, C.-U.; RUCKTESCHLER, N.; SÁ, L. D. A.; SÁ, M. D. O.; SALES, C. B.; SANTOS, R. M. N. dos; SATURNO, J.; SCHÖNGART, J.; SÖRGEL, M.; SOUZA, C. M. de; SOUZA, R. A. F. de; SU, H.; TARGHETTA, N.; TÓTA, J.; TREBS, I.; TRUMBORE, S.; EIJCK, A. van; WALTER, D.; WANG, Z.; WEBER, B.; WILLIAMS, J.; WINDERLICH, J.; WITTMANN, F.; WOLFF, S.; YÁÑEZ-SERRANO, A. M. The Amazon Tall Tower Observatory (ATTO) in the remote Amazon basin: overview of first results from ecosystem ecology, meteorology, trace gas, and aerosol measurements. Atmospheric Chemistry and Physics Discuss, v. 15, n. 18, p. 11599-11726, 2015.| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| Registros recuperados : 21 | |
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
04/12/2023 |
|
Data da última atualização: |
04/12/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
PFANNERSTILL, E. Y.; REIJRINK, N. G.; EDTBAUER, A.; RINGSDORF, A.; ZANNONI, N.; ARAUJO, A. C. de; DITAS, F.; HOLANDA, B. A.; SÁ, M. O.; TSOKANKUNKU, A.; WALTER, D.; WOLFF, S.; LAVRIC, J. V.; PÖHLKER, C.; SÖRGEL, M.; WILLIAMS, J. |
|
Afiliação: |
EVA Y. PFANNERSTILL, Max Planck Institute for Chemistry; NINA G. REIJRINK, Max Planck Institute for Chemistry / IMT Lille Douai; ACHIM EDTBAUER, Max Planck Institute for Chemistry; AKIMA RINGSDORF, Max Planck Institute for Chemistry; NORA ZANNONI, Max Planck Institute for Chemistry; ALESSANDRO CARIOCA DE ARAUJO, CPATU; FLORIAN DITAS, Max Planck Institute for Chemistry; BRUNA A. HOLANDA, Max Planck Institute for Chemistry; MARTA O. SÁ, INPA; ANYWHERE TSOKANKUNKU, Max Planck Institute for Chemistry; DAVID WALTER, Max Planck Institute for Chemistry; STEFAN WOLFF, Max Planck Institute for Chemistry; JOŠT V. LAVRIC, Max Planck Institute for Biogeochemistry; CHRISTOPHER PÖHLKER, Max Planck Institute for Chemistry; MATTHIAS SÖRGEL, Max Planck Institute for Chemistry; JONATHAN WILLIAMS, Max Planck Institute for Chemistry / The Cyprus Institute. |
|
Título: |
Total OH reactivity over the Amazon rainforest: variability with temperature, wind, rain, altitude, time of day, season, and an overall budget closure. |
|
Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
Atmospheric Chemistry and Physics, v. 21, n. 8, p. 6231-6256, 2021. |
|
DOI: |
https://doi.org/10.5194/acp-21-6231-2021 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The tropical forests are Earth's largest source of biogenic volatile organic compounds (BVOCs) and thus also the largest atmospheric sink region for the hydroxyl radical (OH). However, the OH sink above tropical forests is poorly understood, as past studies have revealed large unattributed fractions of total OH reactivity. We present the first total OH reactivity and volatile organic compound (VOC) measurements made at the Amazon Tall Tower Observatory (ATTO) at 80, 150, and 320 m above ground level, covering two dry seasons, one wet season, and one transition season in 2018-2019. By considering a wide range of previously unaccounted for VOCs, which we identified by proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS), the unattributed fraction was with an overall average of 19 % within the measurement uncertainty of ~35 %. In terms of seasonal average OH reactivity, isoprene accounted for 23 %-43 % of the total and oxygenated VOCs (OVOCs) for 22 %-40 %, while monoterpenes, sesquiterpenes, and green leaf volatiles combined were responsible for 9 %-14 %. These findings show that OVOCs were until now an underestimated contributor to the OH sink above the Amazon forest. By day, total OH reactivity decreased towards higher altitudes with strongest vertical gradients observed around noon during the dry season (-0.026 s-1 m-1), while the gradient was inverted at night. Seasonal differences in total OH reactivity were observed, with the lowest daytime average and standard deviation of 19.9 ± 6.2 -1 during a wet-dry transition season with frequent precipitation; 23.7 ± 6.5 -1 during the wet season; and the highest average OH reactivities during two dry-season observation periods with 28.1 ± 7.9 -1 and 29.1 ± 10.8 -1, respectively. The effects of different environmental parameters on the OH sink were investigated, and quantified, where possible. Precipitation caused short-term spikes in total OH reactivity, which were followed by below-normal OH reactivity for several hours. Biomass burning increased total OH reactivity by 2.7 to 9.5 -1. We present a temperature-dependent parameterization of OH reactivity that could be applied in future models of the OH sink to further reduce our knowledge gaps in tropical-forest OH chemistry MenosThe tropical forests are Earth's largest source of biogenic volatile organic compounds (BVOCs) and thus also the largest atmospheric sink region for the hydroxyl radical (OH). However, the OH sink above tropical forests is poorly understood, as past studies have revealed large unattributed fractions of total OH reactivity. We present the first total OH reactivity and volatile organic compound (VOC) measurements made at the Amazon Tall Tower Observatory (ATTO) at 80, 150, and 320 m above ground level, covering two dry seasons, one wet season, and one transition season in 2018-2019. By considering a wide range of previously unaccounted for VOCs, which we identified by proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS), the unattributed fraction was with an overall average of 19 % within the measurement uncertainty of ~35 %. In terms of seasonal average OH reactivity, isoprene accounted for 23 %-43 % of the total and oxygenated VOCs (OVOCs) for 22 %-40 %, while monoterpenes, sesquiterpenes, and green leaf volatiles combined were responsible for 9 %-14 %. These findings show that OVOCs were until now an underestimated contributor to the OH sink above the Amazon forest. By day, total OH reactivity decreased towards higher altitudes with strongest vertical gradients observed around noon during the dry season (-0.026 s-1 m-1), while the gradient was inverted at night. Seasonal differences in total OH reactivity were observed, with the lowest daytime average and ... Mostrar Tudo |
|
Palavras-Chave: |
Compostos orgânicos voláteis. |
|
Thesagro: |
Floresta Tropical. |
|
Thesaurus NAL: |
Amazonia. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159141/1/Total-OH.pdf
|
|
Marc: |
LEADER 03354naa a2200349 a 4500
001 2159141
005 2023-12-04
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5194/acp-21-6231-2021$2DOI
100 1 $aPFANNERSTILL, E. Y.
245 $aTotal OH reactivity over the Amazon rainforest$bvariability with temperature, wind, rain, altitude, time of day, season, and an overall budget closure.$h[electronic resource]
260 $c2021
520 $aThe tropical forests are Earth's largest source of biogenic volatile organic compounds (BVOCs) and thus also the largest atmospheric sink region for the hydroxyl radical (OH). However, the OH sink above tropical forests is poorly understood, as past studies have revealed large unattributed fractions of total OH reactivity. We present the first total OH reactivity and volatile organic compound (VOC) measurements made at the Amazon Tall Tower Observatory (ATTO) at 80, 150, and 320 m above ground level, covering two dry seasons, one wet season, and one transition season in 2018-2019. By considering a wide range of previously unaccounted for VOCs, which we identified by proton transfer reaction time-of-flight mass spectrometry (PTR-ToF-MS), the unattributed fraction was with an overall average of 19 % within the measurement uncertainty of ~35 %. In terms of seasonal average OH reactivity, isoprene accounted for 23 %-43 % of the total and oxygenated VOCs (OVOCs) for 22 %-40 %, while monoterpenes, sesquiterpenes, and green leaf volatiles combined were responsible for 9 %-14 %. These findings show that OVOCs were until now an underestimated contributor to the OH sink above the Amazon forest. By day, total OH reactivity decreased towards higher altitudes with strongest vertical gradients observed around noon during the dry season (-0.026 s-1 m-1), while the gradient was inverted at night. Seasonal differences in total OH reactivity were observed, with the lowest daytime average and standard deviation of 19.9 ± 6.2 -1 during a wet-dry transition season with frequent precipitation; 23.7 ± 6.5 -1 during the wet season; and the highest average OH reactivities during two dry-season observation periods with 28.1 ± 7.9 -1 and 29.1 ± 10.8 -1, respectively. The effects of different environmental parameters on the OH sink were investigated, and quantified, where possible. Precipitation caused short-term spikes in total OH reactivity, which were followed by below-normal OH reactivity for several hours. Biomass burning increased total OH reactivity by 2.7 to 9.5 -1. We present a temperature-dependent parameterization of OH reactivity that could be applied in future models of the OH sink to further reduce our knowledge gaps in tropical-forest OH chemistry
650 $aAmazonia
650 $aFloresta Tropical
653 $aCompostos orgânicos voláteis
700 1 $aREIJRINK, N. G.
700 1 $aEDTBAUER, A.
700 1 $aRINGSDORF, A.
700 1 $aZANNONI, N.
700 1 $aARAUJO, A. C. de
700 1 $aDITAS, F.
700 1 $aHOLANDA, B. A.
700 1 $aSÁ, M. O.
700 1 $aTSOKANKUNKU, A.
700 1 $aWALTER, D.
700 1 $aWOLFF, S.
700 1 $aLAVRIC, J. V.
700 1 $aPÖHLKER, C.
700 1 $aSÖRGEL, M.
700 1 $aWILLIAMS, J.
773 $tAtmospheric Chemistry and Physics$gv. 21, n. 8, p. 6231-6256, 2021.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
