| 1. Identificação | |
| Tipo de Referência | ePrint (Electronic Source) |
| Site | mtc-m16b.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 6qtX3pFwXQZGivnK2Y/Su29o |
| Repositório | sid.inpe.br/mtc-m17@80/2007/12.17.10.54 |
| Última Atualização | 2007:12.17.10.54.38 (UTC) administrator |
| Repositório de Metadados | sid.inpe.br/mtc-m17@80/2007/12.17.10.54.33 |
| Última Atualização dos Metadados | 2022:03.26.18.04.37 (UTC) administrator |
| Chave de Citação | CorreiaAlvaManz::ReClMo |
| Título | Modeling the impacts of land cover change in Amazonia: a regional climate model (RCM) simulation study  |
| Data da Última Atualização | 2007-12-18 |
| Data de Acesso | 25 jun. 2024 |
| Tipo de Suporte | On-line |
| Tipo Secundário | PRE PI |
| Número de Arquivos | 1 |
| Tamanho | 1031 KiB |
| 2. Contextualização | |
| Autor | 1 Correia, F. W. S 2 Alvala, Regina Celia S. 3 Manzi, Antonio Ocimar |
| Grupo | 1 2 DMA-INPE-MCT-BR |
| Afiliação | 1 State University of Amazonas (UEA), Manaus, AM, Brazil 2 Instituto Nacional de Pesquisas Espaciais (INPE/CPTEC) 3 National Institute for Amazonia Research (INPA), Manaus, AM, Brazil |
| Publicação Alternativa | Theoretical Appl.ied Climatol.ogy |
| Produtor | Instituto Nacional de Pesquisas Espaciais |
| Cidade | São José dos Campos |
| Estágio da Publicação Alternativa | accepted |
| Avanço | ePrint update |
| Histórico (UTC) | 2007-12-17 10:54:38 :: deicy@cptec.inpe.br -> administrator :: 2022-03-26 18:04:37 :: administrator -> deicy@cptec.inpe.br :: |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | em andamento |
| Transferível | 1 |
| Palavras-Chave | Amazonia land cover precipitation |
| Resumo | The numerical regional model (Eta) coupled with the Simplified Simple Biosphere Model (SSiB) was used to investigate the impact of land cover changes on the regional climate in Amazonia. Four 13-month integrations were performed for the following scenarios: (a) no deforestation, (b) current conditions, (c) deforestation predicted for 2033, and (d) large scale deforestation. All initial and prescribed boundary conditions were kept identical for all integrations, except the land cover changes. The results show that during the dry season the post-deforestation decrease in root depth plays an important role in the energy budget, since there is less soil moisture available for evapotranspiration. In all scenarios there was a significant increase in the surface temperature, from 2.0 C in the first scenario, up to 2.8C in the last one. In both the scenarios (b) and (c), the downward component of the surface solar radiation decreased due to an increase in the cloud cover over the deforested areas, which contributed to a further reduction of the net radiation absorbed at the surface. The cloud mechanism, where an increase in albedo is balanced by an increase in downward solar radiation, was not detected in any of these scenarios. In scenarios (a), (b) and (c), a negative feedback mechanism was observed in the hydrological cycle, with greater amounts of moisture being carried to the deforested areas. The increase in moisture convergence was greater than the reduction in evapotranspiration for both scenarios (b) and (c). This result, and the meso-scale thermodynamic processes caused an increase in precipitation. A different situation was observed in the large-scale deforestation scenario (d): a local increase of moisture convergence was observed, but not sufficiently intense to generate an increase in precipitation; the local evapotranspiration decrease was dominant in this scenario. Therefore, the partial deforestation in Amazonia can actually lead to an increase in precipitation locally. However, if the deforestation increases, this condition becomes unsustainable, leading to drier conditions and, consequently, to reduced precipitation in the region. . |
| Área | MET |
| Arranjo | urlib.net > BDMCI > Fonds > Produção até 2016 > DMA > Modeling the impacts... |
| 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/6qtX3pFwXQZGivnK2Y/Su29o |
| URL dos dados zipados | http://urlib.net/zip/6qtX3pFwXQZGivnK2Y/Su29o |
| Idioma | en |
| Arquivo Alvo | v1.pdf |
| Grupo de Usuários | administrator deicy@cptec.inpe.br administrator |
| Visibilidade | shown |
| Permissão de Atualização | transferida para ePrint update |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/46JKC45 |
| Acervo Hospedeiro | lcp.inpe.br/ignes/2004/02.12.18.39 cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notas | |
| Campos Vazios | accessyear archivingpolicy archivist contenttype copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition electronicmailaddress format isbn issn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit project readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url versiontype year |
| 7. Controle da descrição | |
| e-Mail (login) | deicy@cptec.inpe.br |
| atualizar | |