Space-time distribution of rainfall anomaly index (RAI) for the Salgado Basin, Ceará State-Brazil
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| Format: | Artículo científico |
| Language: | en |
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Universidade Federal de Santa Maria
2017
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| author | Juliana Alcântara Costa |
| author_facet | Juliana Alcântara Costa |
| contents | Space-time distribution of rainfall anomaly index (RAI) for the Salgado Basin, Ceará State-Brazil Juliana Alcântara Costa Gláuber Pontes Rodrigues Estudios Ambientales SSTA Drought Climatic indexes Given the great variability of the precipitation in the Brazilian Northeast, it is necessary to use climate indexes for its m onitoring. In this sense , this work aims to present a study of the space -time variati on in the rainfall at the Salgado Basin, located in the state of Ceará, using the Rainfall Anomaly Index (RAI) as a tool. In order to do so, daily precipitation data from seven meteorological sta tions were used for the period between 1974 and 2015. From the data obtained, the RAI was calculated and plotted in spatial distribution maps. It was possible to observe that the rainy season at the basin lasts from January to April, and the driest period of the year lasts from July to October. The historical series presented drier years than rainy ones. A variation in the RAI within the basin was evidenced, and the region corresponding to C hapada do Araripe was wetter . The years with the extreme anomalies were related to sea surface temperature a nomaly events, which favored its occurrence. 2017 artículo científico 0100-8307 https://www.redalyc.org/articulo.oa?id=467553545012 https://www.redalyc.org/journal/4675/467553545012/ https://www.redalyc.org/journal/4675/467553545012/html/ https://www.redalyc.org/journal/4675/467553545012/467553545012.epub https://www.redalyc.org/journal/4675/467553545012/movil en http://www.redalyc.org/revista.oa?id=4675 Ciência e Natura application/pdf Universidade Federal de Santa Maria Ciência e Natura (Brasil) Num.3 Vol.39 |
| format | Artículo científico |
| id | redalyc_467553545012 |
| institution | Redalyc |
| language | en |
| publishDate | 2017 |
| publisher | Universidade Federal de Santa Maria |
| spellingShingle | Space-time distribution of rainfall anomaly index (RAI) for the Salgado Basin, Ceará State-Brazil Juliana Alcântara Costa Estudios Ambientales SSTA Drought Climatic indexes Space-time distribution of rainfall anomaly index (RAI) for the Salgado Basin, Ceará State-Brazil Juliana Alcântara Costa Gláuber Pontes Rodrigues Estudios Ambientales SSTA Drought Climatic indexes Given the great variability of the precipitation in the Brazilian Northeast, it is necessary to use climate indexes for its m onitoring. In this sense , this work aims to present a study of the space -time variati on in the rainfall at the Salgado Basin, located in the state of Ceará, using the Rainfall Anomaly Index (RAI) as a tool. In order to do so, daily precipitation data from seven meteorological sta tions were used for the period between 1974 and 2015. From the data obtained, the RAI was calculated and plotted in spatial distribution maps. It was possible to observe that the rainy season at the basin lasts from January to April, and the driest period of the year lasts from July to October. The historical series presented drier years than rainy ones. A variation in the RAI within the basin was evidenced, and the region corresponding to C hapada do Araripe was wetter . The years with the extreme anomalies were related to sea surface temperature a nomaly events, which favored its occurrence. 2017 artículo científico 0100-8307 https://www.redalyc.org/articulo.oa?id=467553545012 https://www.redalyc.org/journal/4675/467553545012/ https://www.redalyc.org/journal/4675/467553545012/html/ https://www.redalyc.org/journal/4675/467553545012/467553545012.epub https://www.redalyc.org/journal/4675/467553545012/movil en http://www.redalyc.org/revista.oa?id=4675 Ciência e Natura application/pdf Universidade Federal de Santa Maria Ciência e Natura (Brasil) Num.3 Vol.39 |
| title | Space-time distribution of rainfall anomaly index (RAI) for the Salgado Basin, Ceará State-Brazil |
| topic | Estudios Ambientales SSTA Drought Climatic indexes |
| url | https://www.redalyc.org/articulo.oa?id=467553545012 https://www.redalyc.org/journal/4675/467553545012/ https://www.redalyc.org/journal/4675/467553545012/html/ https://www.redalyc.org/journal/4675/467553545012/467553545012.epub https://www.redalyc.org/journal/4675/467553545012/movil |