The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil.
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Capítulo de livro |
Idioma: | por |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1104145 |
Resumo: | Sugarcane (SC) is expanding over coffee (CO), while both crops have replaced the natural vegetation (NV) in the northeastern side of São Paulo (SP) state, Southeast Brazil. Under these dynamic land-use changes, geosciences are valuable tools for evaluating the largescale energy and mass exchanges between the vegetation and the lower atmosphere. For quantification of the energy balance components in these mixed agroecosystems, MODIS images were used throughout the Simple Algorithm for Evapotranspiration Retrieving (SAFER) algorithm, during the year 2015 in the main sugarcane- and coffee-growing regions of the state. Regarding, respectively, sugarcane, coffee, and natural vegetation, the fractions of the net radiation (Rn) used as latent heat flux (?E) were 0.68, 0.87, and 0.77, while the corresponding ones for the sensible heat (H) fluxes were 0.27, 0.07, and 0.16. Negative H values were noticed from April to July, because of heat advection raising ?E values above Rn, but they were more often in coffee than in sugarcane. It was concluded that sugarcane crop presented lower evapotranspiration rates, when compared with coffee, which could be an advantage under the actual water scarcity scenario. However, sugarcane replacing natural vegetation means environmental warming, while the land use changes promoted by coffee crop represented cooling conditions. |
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The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil.Latent heat fluxSensible heat fluxMODISSAFERSimple Algorithm for Evapotranspiration RetrievingEnergy balanceAgroecosystemsLand use changeSoil heatingDigital imagesSugarcane (SC) is expanding over coffee (CO), while both crops have replaced the natural vegetation (NV) in the northeastern side of São Paulo (SP) state, Southeast Brazil. Under these dynamic land-use changes, geosciences are valuable tools for evaluating the largescale energy and mass exchanges between the vegetation and the lower atmosphere. For quantification of the energy balance components in these mixed agroecosystems, MODIS images were used throughout the Simple Algorithm for Evapotranspiration Retrieving (SAFER) algorithm, during the year 2015 in the main sugarcane- and coffee-growing regions of the state. Regarding, respectively, sugarcane, coffee, and natural vegetation, the fractions of the net radiation (Rn) used as latent heat flux (?E) were 0.68, 0.87, and 0.77, while the corresponding ones for the sensible heat (H) fluxes were 0.27, 0.07, and 0.16. Negative H values were noticed from April to July, because of heat advection raising ?E values above Rn, but they were more often in coffee than in sugarcane. It was concluded that sugarcane crop presented lower evapotranspiration rates, when compared with coffee, which could be an advantage under the actual water scarcity scenario. However, sugarcane replacing natural vegetation means environmental warming, while the land use changes promoted by coffee crop represented cooling conditions.ANTONIO HERIBERTO DE C TEIXEIRA, CPATC; JANICE FREITAS LEIVAS, CNPM; CARLOS CESAR RONQUIM, CNPM; GUSTAVO BAYMA SIQUEIRA DA SILVA, CNPMA.TEIXEIRA, A. H. de C.LEIVAS, J. F.RONQUIM, C. C.SILVA, G. B. S. da2019-01-19T00:22:21Z2019-01-19T00:22:21Z2019-01-1520182019-01-19T00:22:21Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bookPartp. 105-121.In: RUSTAMOV, R. B. (Ed.). Multi-purposeful application of geospatial data. London: IntechOpen, 2018. cap. 6.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1104145porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2019-01-19T00:22:28Zoai:www.alice.cnptia.embrapa.br:doc/1104145Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542019-01-19T00:22:28falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542019-01-19T00:22:28Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil. |
title |
The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil. |
spellingShingle |
The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil. TEIXEIRA, A. H. de C. Latent heat flux Sensible heat flux MODIS SAFER Simple Algorithm for Evapotranspiration Retrieving Energy balance Agroecosystems Land use change Soil heating Digital images |
title_short |
The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil. |
title_full |
The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil. |
title_fullStr |
The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil. |
title_full_unstemmed |
The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil. |
title_sort |
The use of MODIS images to quantify the energy balance in different agroecosystems in Brazil. |
author |
TEIXEIRA, A. H. de C. |
author_facet |
TEIXEIRA, A. H. de C. LEIVAS, J. F. RONQUIM, C. C. SILVA, G. B. S. da |
author_role |
author |
author2 |
LEIVAS, J. F. RONQUIM, C. C. SILVA, G. B. S. da |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
ANTONIO HERIBERTO DE C TEIXEIRA, CPATC; JANICE FREITAS LEIVAS, CNPM; CARLOS CESAR RONQUIM, CNPM; GUSTAVO BAYMA SIQUEIRA DA SILVA, CNPMA. |
dc.contributor.author.fl_str_mv |
TEIXEIRA, A. H. de C. LEIVAS, J. F. RONQUIM, C. C. SILVA, G. B. S. da |
dc.subject.por.fl_str_mv |
Latent heat flux Sensible heat flux MODIS SAFER Simple Algorithm for Evapotranspiration Retrieving Energy balance Agroecosystems Land use change Soil heating Digital images |
topic |
Latent heat flux Sensible heat flux MODIS SAFER Simple Algorithm for Evapotranspiration Retrieving Energy balance Agroecosystems Land use change Soil heating Digital images |
description |
Sugarcane (SC) is expanding over coffee (CO), while both crops have replaced the natural vegetation (NV) in the northeastern side of São Paulo (SP) state, Southeast Brazil. Under these dynamic land-use changes, geosciences are valuable tools for evaluating the largescale energy and mass exchanges between the vegetation and the lower atmosphere. For quantification of the energy balance components in these mixed agroecosystems, MODIS images were used throughout the Simple Algorithm for Evapotranspiration Retrieving (SAFER) algorithm, during the year 2015 in the main sugarcane- and coffee-growing regions of the state. Regarding, respectively, sugarcane, coffee, and natural vegetation, the fractions of the net radiation (Rn) used as latent heat flux (?E) were 0.68, 0.87, and 0.77, while the corresponding ones for the sensible heat (H) fluxes were 0.27, 0.07, and 0.16. Negative H values were noticed from April to July, because of heat advection raising ?E values above Rn, but they were more often in coffee than in sugarcane. It was concluded that sugarcane crop presented lower evapotranspiration rates, when compared with coffee, which could be an advantage under the actual water scarcity scenario. However, sugarcane replacing natural vegetation means environmental warming, while the land use changes promoted by coffee crop represented cooling conditions. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 2019-01-19T00:22:21Z 2019-01-19T00:22:21Z 2019-01-15 2019-01-19T00:22:21Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/bookPart |
format |
bookPart |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
In: RUSTAMOV, R. B. (Ed.). Multi-purposeful application of geospatial data. London: IntechOpen, 2018. cap. 6. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1104145 |
identifier_str_mv |
In: RUSTAMOV, R. B. (Ed.). Multi-purposeful application of geospatial data. London: IntechOpen, 2018. cap. 6. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1104145 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
p. 105-121. |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503469473726464 |