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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Trigo. |
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Data corrente: |
15/09/1999 |
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Data da última atualização: |
15/09/1999 |
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Autoria: |
CUNHA, G. R. da; DALMAGO, G. A.; ESTEFANEL, V. |
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Afiliação: |
1 EMBRAPA-CNPT; 2 CNPq-AP; 3 UFSM, Santa Maria. |
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Título: |
ENSO influences on wheat crop in Brazil. |
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Título original: |
Influências do fenômeno Enso sobre a cultura de trigo no Brasil. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Revista Brasileira de Agrometeorologia, Santa Maria, v. 7, n. 1, p. 127-138, jan./jun. 1999. |
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Idioma: |
Inglês |
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Conteúdo: |
The El Niño-Southern Oscillation (ENSO) phenomenon or just El Niño, as commonly called, influences the climatic behavior in different areas of the world. In the case of Brazil, this phenomenon affects the northern part of the Northeast Region, the eastern Amazon (in the tropical area) and the extra-tropical area of the Southern Region. The climatic variability associated with the ENSO phenomenon phases, especially rainfall anomalies, may be quantified and this information can be effectively used by crop managers to reduce associated risks or to make better use of forthcoming favorable climatic conditions. The objective of this study was to identify the ENSO phases influencing wheat production in Brazil. The impact of these phases on grain yield was based on a historical series of yield data from 1920 to 1997. For 23 El Niño occurrences analyzed at national level, the deviations in wheat yield was negative in 61% of the cases. For 15 La Niña events, positive influences on wheat yields were observed in 73% of the cases. In the 40 neutral years, 55% of the time yield deviations were positive and 45% of the time were negative. Therefore, the ENSO phenomenon influences wheat yield in Brazil. In general, it causes positive impacts in La Niña years and negative impacts in El Niño years, particularly in the Southern part of the country. |
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Palavras-Chave: |
Anomalia climática; Enso; Índice de Oscilação do Sul. |
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Thesagro: |
Clima; Trigo. |
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Thesaurus Nal: |
El Nino; La Nina. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02053naa a2200241 a 4500
001 1822441
005 1999-09-15
008 1999 bl uuuu u00u1 u #d
100 1 $aCUNHA, G. R. da
240 $aInfluências do fenômeno Enso sobre a cultura de trigo no Brasil.
245 $aENSO influences on wheat crop in Brazil.
260 $c1999
520 $aThe El Niño-Southern Oscillation (ENSO) phenomenon or just El Niño, as commonly called, influences the climatic behavior in different areas of the world. In the case of Brazil, this phenomenon affects the northern part of the Northeast Region, the eastern Amazon (in the tropical area) and the extra-tropical area of the Southern Region. The climatic variability associated with the ENSO phenomenon phases, especially rainfall anomalies, may be quantified and this information can be effectively used by crop managers to reduce associated risks or to make better use of forthcoming favorable climatic conditions. The objective of this study was to identify the ENSO phases influencing wheat production in Brazil. The impact of these phases on grain yield was based on a historical series of yield data from 1920 to 1997. For 23 El Niño occurrences analyzed at national level, the deviations in wheat yield was negative in 61% of the cases. For 15 La Niña events, positive influences on wheat yields were observed in 73% of the cases. In the 40 neutral years, 55% of the time yield deviations were positive and 45% of the time were negative. Therefore, the ENSO phenomenon influences wheat yield in Brazil. In general, it causes positive impacts in La Niña years and negative impacts in El Niño years, particularly in the Southern part of the country.
650 $aEl Nino
650 $aLa Nina
650 $aClima
650 $aTrigo
653 $aAnomalia climática
653 $aEnso
653 $aÍndice de Oscilação do Sul
700 1 $aDALMAGO, G. A.
700 1 $aESTEFANEL, V.
773 $tRevista Brasileira de Agrometeorologia, Santa Maria$gv. 7, n. 1, p. 127-138, jan./jun. 1999.
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Embrapa Trigo (CNPT) |
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| Registros recuperados : 7 | |
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