| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | marte3.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 6qtX3pFwXQZ3r59YCT/H3Fno |
| Repositório | sid.inpe.br/iris@1905/2005/08.03.23.19 |
| Última Atualização | 2018:01.04.13.06.29 (UTC) marciana |
| Repositório de Metadados | sid.inpe.br/iris@1905/2005/08.03.23.19.55 |
| Última Atualização dos Metadados | 2018:06.06.03.55.14 (UTC) administrator |
| Chave Secundária | INPE-9301-PRE/4966 |
| Rótulo | 10221 |
| Chave de Citação | KruijtArElNoRaOl:2002:EsAmNi |
| Título | Estimation of Amazon night-time COý fluxes and flux losses and effects on inferring ecosystem physiology  |
| Ano | 2002 |
| Data Secundária | 20021105 |
| Data de Acesso | 26 jun. 2024 |
| Tipo Secundário | PRE CI |
| Número de Arquivos | 1 |
| Tamanho | 32 KiB |
| 2. Contextualização | |
| Autor | 1 Kruijt, B. 2 Araujo, A. 3 Elber, J. A. 4 Nobre, A. D. 5 Randow, C. von 6 Oliveira, P. J. |
| Grupo | 1 CPT-INPE-MCT-BR |
| Nome do Evento | International LBA Scientific Conference, 2. |
| Localização do Evento | Manaus, Br |
| Data | 7-10 July 2002 |
| Histórico (UTC) | 2015-05-21 18:37:13 :: administrator -> marciana :: 2002 2018-01-04 13:06:29 :: marciana -> administrator :: 2002 2018-06-06 03:55:14 :: administrator -> marciana :: 2002 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Palavras-Chave | METEOROLOGIA |
| Resumo | Several years of CO2 flux data now exist for four flux towers in the Brazilian Amazon, collected within the scope of the international LBA project. These data sets show many similarities in the diurnal and seasonal behaviour of fluxes, as well as in the physiological responses of NEE to radiation, VPD and CO2 concentration. Clear differences exist, however, in seasonality. One overriding aspect of the results is the very high rates of carbon uptake on an annual scale, and these rates are subject to such skepticism. Nevertheless, despite rigorous sensitivity tests we cannot identify the reason for this discrepancy in eddy correlation methodology. It is often found in eddy correlation studies that the system seems to underestimate CO2 emission fluxes during the night, if turbulent mixing is reduced. Even if properly corrected for storage of CO2 inside the canopy, ecosystem exchange in these conditions appears lower than expected from values measured during windy nights. If we apply such analysis to the data collected in some of the Amazon sites, this effect is present to such a large extent, that it could take away the full annual carbon uptake if it were corrected for. For another Amazon forest site, with equally high uptake, the effect is completely absent. We here subject the data to some alternative analysis, shedding a rather different light on Amazon night-time flux losses. For example, if we consider 24-hour totals of NEE, there is only little dependence of these totals on night-time turbulence. Also, there often is a consistent high emission peak during early morning which is NOT compensated for by storage fluxes. We analyse these morning fluxes in more detail by comparing them with the expected light response during these hours, and find that light response is significantly 'stalled' at low light. Also we attempt to interpret respiration, photosynthesis and night-time leakage from a simple combined mass balance-turbulence model. This observation may be used to construct a more realistic method to assess the real total night-time losses. Also, this may be used to correct day-time values to determine real canopy photosynthesis. We will explore this approach and investigate how this affects analysis of canopy physiology through, for example, canopy-scale light response and A-Ci curves. |
| Área | MET |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > CGCPT > Estimation of Amazon... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| URL dos dados | http://urlib.net/ibi/6qtX3pFwXQZ3r59YCT/H3Fno |
| URL dos dados zipados | http://urlib.net/zip/6qtX3pFwXQZ3r59YCT/H3Fno |
| Arquivo Alvo | 9301.pdf |
| Grupo de Usuários | administrator |
| Grupo de Leitores | administrator marciana |
| Visibilidade | shown |
| Permissão de Leitura | allow from all |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3EUPEJL |
| Lista de Itens Citando | sid.inpe.br/bibdigital/2013/10.06.18.03 1 |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.03.15.36 |
| 6. Notas | |
| Campos Vazios | affiliation archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor electronicmailaddress format isbn issn language lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress resumeid rightsholder schedulinginformation secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url versiontype volume |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |