Relationship between ENSO and winter-wheat yields in Sonora, Mexico
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2003
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| _version_ | 1876470753161904128 |
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| author | César A. Salinas Zavala |
| author_facet | César A. Salinas Zavala |
| contents | Relationship between ENSO and winter-wheat yields in Sonora, Mexico César A. Salinas Zavala Daniel B. Lluch Cota Ciencias de la Tierra Winter Sonora ENSO effects wheat culture northwest Mexico Winter-grown wheat is one of the main cultivates in river-irrigated valleys of the state of Sonora, northwest Mexico.Although largely determined by technological improvements and management, wheat yields may still reflect year-to-year variationspartially determined by climatic factors, including the extreme phases of El Niño-Southern Oscillation. We analyzed timeseries of yearly wheat yields for five locations; yield residuals were obtained from a logistic model in order to eliminate longtermtrends due to technological development. The series of residuals were found to be significantly correlated to at least oneother series. This common variability was extracted by means of Principal Component Analysis. The first component accountedfor a 63% of total variance. The amplitude time series of this component was compared to indices of ENSO. El Niño (La Niña)episodes seem to result in an increase (decrease) in wheat yields, which is consistent with previous reports of an increased(decreased) precipitation over northwest Mexico during these events. 2003 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56842306 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.42 |
| format | Artículo científico |
| id | redalyc_56842306 |
| institution | Redalyc |
| language | en |
| publishDate | 2003 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Relationship between ENSO and winter-wheat yields in Sonora, Mexico César A. Salinas Zavala Ciencias de la Tierra Winter Sonora ENSO effects wheat culture northwest Mexico Relationship between ENSO and winter-wheat yields in Sonora, Mexico César A. Salinas Zavala Daniel B. Lluch Cota Ciencias de la Tierra Winter Sonora ENSO effects wheat culture northwest Mexico Winter-grown wheat is one of the main cultivates in river-irrigated valleys of the state of Sonora, northwest Mexico.Although largely determined by technological improvements and management, wheat yields may still reflect year-to-year variationspartially determined by climatic factors, including the extreme phases of El Niño-Southern Oscillation. We analyzed timeseries of yearly wheat yields for five locations; yield residuals were obtained from a logistic model in order to eliminate longtermtrends due to technological development. The series of residuals were found to be significantly correlated to at least oneother series. This common variability was extracted by means of Principal Component Analysis. The first component accountedfor a 63% of total variance. The amplitude time series of this component was compared to indices of ENSO. El Niño (La Niña)episodes seem to result in an increase (decrease) in wheat yields, which is consistent with previous reports of an increased(decreased) precipitation over northwest Mexico during these events. 2003 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56842306 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.42 |
| title | Relationship between ENSO and winter-wheat yields in Sonora, Mexico |
| topic | Ciencias de la Tierra Winter Sonora ENSO effects wheat culture northwest Mexico |
| url | https://www.redalyc.org/articulo.oa?id=56842306 |