Amazon rain forest subcanopy flow and the carbon budget: Santarém LBA-ECO site
Horizontal and vertical CO2 fluxes and gradients were made in an Amazon tropical rain forest, the Tapajós National Forest Reserve (FLONA-Tapajós: 54°58'W, 2°51'S). Two observational campaigns in 2003 and 2004 were conducted to describe subcanopy flows, clarify their relationship to winds above the f...
| Autor principal: | Tóta, Júlio |
|---|---|
| Outros Autores: | Fitzjarrald, David Roy, Staebler, Ralf M., Sakai, Ricardo K., Moraes, Osvaldo Luiz Leal de, Acevedo, Otávio C., Wofsy, Steven C., Manzi, Antônio Ocimar |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of Geophysical Research: Biogeosciences
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18450 |
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oai:repositorio:1-18450 |
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oai:repositorio:1-18450 Amazon rain forest subcanopy flow and the carbon budget: Santarém LBA-ECO site Tóta, Júlio Fitzjarrald, David Roy Staebler, Ralf M. Sakai, Ricardo K. Moraes, Osvaldo Luiz Leal de Acevedo, Otávio C. Wofsy, Steven C. Manzi, Antônio Ocimar Advection Carbon Budget Carbon Flux Forest Canopy Hypothesis Testing Rainforest Tropical Forest Brasil Para [brazil] South America Tapajos National Forest Horizontal and vertical CO2 fluxes and gradients were made in an Amazon tropical rain forest, the Tapajós National Forest Reserve (FLONA-Tapajós: 54°58'W, 2°51'S). Two observational campaigns in 2003 and 2004 were conducted to describe subcanopy flows, clarify their relationship to winds above the forest, and estimate how they may transport CO2 horizontally. It is now recognized that subcanopy transport of respired CO2 is missed by budgets that rely only on single point eddy covariance measurements, with the error being most important under nocturnal calm conditions. We tested the hypothesis that horizontal mean transport, not previously measured in tropical forests, may account for the missing CO 2 in such conditions. A subcanopy network of wind and CO2 sensors was installed. Significant horizontal transport of CO2 was observed in the lowest 10 m of the canopy. Results indicate that CO2 advection accounted for 73% and 71%, respectively, of the carbon budget for all calm nights evaluated during dry and wet periods. We found that horizontal advection is likely important to the canopy CO2 budget even for conditions with the above-canopy friction velocity higher than commonly used thresholds. Copyright 2008 by the American Geophysical Union. 2020-06-15T21:55:12Z 2020-06-15T21:55:12Z 2009 Artigo https://repositorio.inpa.gov.br/handle/1/18450 10.1029/2007JG000597 en Volume 114, Número 1 Restrito Journal of Geophysical Research: Biogeosciences |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Advection Carbon Budget Carbon Flux Forest Canopy Hypothesis Testing Rainforest Tropical Forest Brasil Para [brazil] South America Tapajos National Forest |
| spellingShingle |
Advection Carbon Budget Carbon Flux Forest Canopy Hypothesis Testing Rainforest Tropical Forest Brasil Para [brazil] South America Tapajos National Forest Tóta, Júlio Amazon rain forest subcanopy flow and the carbon budget: Santarém LBA-ECO site |
| topic_facet |
Advection Carbon Budget Carbon Flux Forest Canopy Hypothesis Testing Rainforest Tropical Forest Brasil Para [brazil] South America Tapajos National Forest |
| description |
Horizontal and vertical CO2 fluxes and gradients were made in an Amazon tropical rain forest, the Tapajós National Forest Reserve (FLONA-Tapajós: 54°58'W, 2°51'S). Two observational campaigns in 2003 and 2004 were conducted to describe subcanopy flows, clarify their relationship to winds above the forest, and estimate how they may transport CO2 horizontally. It is now recognized that subcanopy transport of respired CO2 is missed by budgets that rely only on single point eddy covariance measurements, with the error being most important under nocturnal calm conditions. We tested the hypothesis that horizontal mean transport, not previously measured in tropical forests, may account for the missing CO 2 in such conditions. A subcanopy network of wind and CO2 sensors was installed. Significant horizontal transport of CO2 was observed in the lowest 10 m of the canopy. Results indicate that CO2 advection accounted for 73% and 71%, respectively, of the carbon budget for all calm nights evaluated during dry and wet periods. We found that horizontal advection is likely important to the canopy CO2 budget even for conditions with the above-canopy friction velocity higher than commonly used thresholds. Copyright 2008 by the American Geophysical Union. |
| format |
Artigo |
| author |
Tóta, Júlio |
| author2 |
Fitzjarrald, David Roy Staebler, Ralf M. Sakai, Ricardo K. Moraes, Osvaldo Luiz Leal de Acevedo, Otávio C. Wofsy, Steven C. Manzi, Antônio Ocimar |
| author2Str |
Fitzjarrald, David Roy Staebler, Ralf M. Sakai, Ricardo K. Moraes, Osvaldo Luiz Leal de Acevedo, Otávio C. Wofsy, Steven C. Manzi, Antônio Ocimar |
| title |
Amazon rain forest subcanopy flow and the carbon budget: Santarém LBA-ECO site |
| title_short |
Amazon rain forest subcanopy flow and the carbon budget: Santarém LBA-ECO site |
| title_full |
Amazon rain forest subcanopy flow and the carbon budget: Santarém LBA-ECO site |
| title_fullStr |
Amazon rain forest subcanopy flow and the carbon budget: Santarém LBA-ECO site |
| title_full_unstemmed |
Amazon rain forest subcanopy flow and the carbon budget: Santarém LBA-ECO site |
| title_sort |
amazon rain forest subcanopy flow and the carbon budget: santarém lba-eco site |
| publisher |
Journal of Geophysical Research: Biogeosciences |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18450 |
| _version_ |
1787142110696177664 |
| score |
11.755432 |