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1. Identificação
Tipo de ReferênciaArtigo em Evento (Conference Proceedings)
Sitemtc-m21c.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34R/44K23CE
Repositóriosid.inpe.br/mtc-m21c/2021/04.30.19.05
Última Atualização2021:04.30.19.05.36 (UTC) simone
Repositório de Metadadossid.inpe.br/mtc-m21c/2021/04.30.19.05.37
Última Atualização dos Metadados2022:04.03.22.29.12 (UTC) administrator
Chave SecundáriaINPE--PRE/
DOI10.5194/egusphere-egu21-8739
Chave de CitaçãoLapolaSSGACDRVR:2021:BeEfEC
TítuloBeta effect of eCO2 can cause as much rainfall decrease as large-scale deforestation in the Amazon
Ano2021
Data de Acesso20 maio 2024
Tipo SecundárioPRE CI
Número de Arquivos1
Tamanho277 KiB
2. Contextualização
Autor 1 Lapola, David
 2 Sampaio, Gilvan
 3 Shimizu, Marília Harumi
 4 Guimarães Júnior, Carlos Augusto
 5 Alexandre, Felipe
 6 Cardoso, Manoel Ferreira
 7 Domingues, Tomas
 8 Rammig, Anja
 9 Von Randow, Celso
10 Rezende, Luiz Felipe Campos de
ORCID 1
 2 0000-0001-6956-3950
 3 0000-0003-0895-555X
 4
 5
 6 0000-0003-2447-6882
 7
 8 0000-0001-5425-8718
Grupo 1
 2 CGCT-CGCT-INPE-MCTI-GOV-BR
 3 DIPTC-CGCT-INPE-MCTI-GOV-BR
 4 DIIAV-CGCT-INPE-MCTI-GOV-BR
 5
 6 DIIAV-CGCT-INPE-MCTI-GOV-BR
 7
 8
 9 DIIAV-CGCT-INPE-MCTI-GOV-BR
10 DIIAV-CGCT-INPE-MCTI-GOV-BR
Afiliação 1 Universidade Estadual de Campinas (UNICAMP)
 2 Instituto Nacional de Pesquisas Espaciais (INPE)
 3 Instituto Nacional de Pesquisas Espaciais (INPE)
 4 Instituto Nacional de Pesquisas Espaciais (INPE)
 5
 6 Instituto Nacional de Pesquisas Espaciais (INPE)
 7
 8
 9 Instituto Nacional de Pesquisas Espaciais (INPE)
10 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor 1 dmlapola@unicamp.br
 2 gilvan.sampaio@inpe.br
 3 marilia.shimizu@gmail.com
 4 carlos.junior@inpe.br
 5
 6 manoelfcardoso@gmail.com
 7
 8
 9 celso.vonrandow@inpe.br
10 luizfeliperezende@gmail.com
Nome do EventoEGU General Assembly
Localização do EventoOnline
Data19-30 apr.
Editora (Publisher)EGU
Histórico (UTC)2021-04-30 19:05:37 :: simone -> administrator ::
2022-04-03 22:29:12 :: administrator -> simone :: 2021
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
ResumoAmazon regions climate is particularly sensitive to surface processes and properties such as heat fluxes and vegetation coverage. Rainfall is a key expression of such land surface-atmosphere interactions in the region due to its strong dependence on forest transpiration. While a large number of past studies have shown the impacts of large-scale deforestation on annual rainfall, studies on the isolated effects of elevated atmospheric CO2 concentration (eCO2) on plant physiology (i.e. the β effect), for example on canopy transpiration and rainfall, are scarcer. Here we make a systematic comparison of the plant physiological effects of eCO2 and deforestation on Amazon rainfall. We use the CPTEC-Brazilian Atmospheric Model (BAM) with dynamic vegetation under a 1.5xCO2 and a 100% substitution of the forest by pasture grassland, with all other conditions held similar between the two scenarios. We find that both scenarios result in equivalent average annual rainfall reductions (Physiology: -252 mm,-12%; Deforestation: -292 mm, -13%) that are well above observed Amazon rainfall interannual variability of 5.1%. Rainfall decrease in the two scenarios are caused by a reduction of approximately 20% of canopy transpiration, but for different reasons: eCO2-driven reduction of stomatal conductance in the Physiology run; decreased leaf area index of pasture (-66%) and its dry-season lower surface vegetation coverage in the Deforestation run. Walker circulation is strengthened in the two scenarios (with enhanced convection over the Andes and a weak subsidence branch over east Amazon) but, again, through different mechanisms: enhanced west winds from the Pacific and reduced easterlies entering the basin in Physiology, and strongly increased easterlies in Deforestation. Although our results for the Deforestation scenario are in agreement with previous observational and modelling studies, the lack of direct field-based ecosystem-level experimental evidence on the effect of eCO2 in moisture fluxes of tropical forests confers a substantial level of uncertainty to this and any other projections on the physiological effect of eCO2 on Amazon rainfall. Furthermore, our results denote the incurred responsibilities of both Amazonian and non- Amazonian countries to mitigate potential future climatic change and its impacts in the region driven either by local deforestation (to be tackled by Amazonian countries) or global CO2 emissions (to be handled by all countries).
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4. Condições de acesso e uso
URL dos dadoshttp://urlib.net/ibi/8JMKD3MGP3W34R/44K23CE
URL dos dados zipadoshttp://urlib.net/zip/8JMKD3MGP3W34R/44K23CE
Idiomaen
Arquivo AlvoEGU21-8739-print.pdf
Grupo de Usuáriossimone
Visibilidadeshown
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/46KUATE
Acervo Hospedeirourlib.net/www/2017/11.22.19.04
6. Notas
Campos Vaziosarchivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination e-mailaddress edition editor format isbn issn keywords label lineage mark mirrorrepository nextedition notes numberofvolumes organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url versiontype volume
7. Controle da descrição
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