Drought Between 1963 and 2017 in the Federal District, Brazil
Drought is a climatic extreme caused by the precipitation deficit, which results in low water availability for different human activities. The drought characterization regarding of its duration and severity is still little explored, especially in regions where drought is not recurrent in a short t...
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| Format: | Article |
| Language: | English |
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Universidade Federal do Rio de Janeiro
2018-08-01
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| Series: | Anuário do Instituto de Geociências |
| Subjects: | |
| Online Access: | http://www.anuario.igeo.ufrj.br/2018_2/2018_2_487_498.pdf |
| _version_ | 1828077408272515072 |
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| author | Ana Paula Martins do Amaral Cunha Sheila Santana de Barros Brito Germano Gondim Ribeiro Neto Regina Célia dos Santos Alvalá |
| author_facet | Ana Paula Martins do Amaral Cunha Sheila Santana de Barros Brito Germano Gondim Ribeiro Neto Regina Célia dos Santos Alvalá |
| author_sort | Ana Paula Martins do Amaral Cunha |
| collection | DOAJ |
| description | Drought is a climatic extreme caused by the precipitation deficit, which results in low water availability for different human
activities. The drought characterization regarding of its duration and severity is still little explored, especially in regions where
drought is not recurrent in a short time scale. With that in mind, this study presents a quantitative evaluation of the drought events
occurred between 1964 and 2017 in the Federal District, with an emphasis on the last drought of 2016-2017. For this, the Standardized
Precipitation Index (SPI) was used to evaluate the duration and severity of drought events and the Vegetation Supply Water Index
(VSWI) for the spatial analysis of the drought impacts on vegetation. According to the SPI, the longest and most severe drought event,
occurred in 1998. The most recent drought 2016-2017 started in April, beginning of the dry period, but remained throughout the wet
season (October 2016 to March 2017). Considering ranking of duration and severity, among all the longest and severe events occurred
in Brasilia, since 1963, this recent drought event can be positioned in sixth and in fourth position respectively, emphasizing its study
importance in scientific community. According to VSWI, in the last drought event, the areas impacted by drought reached 75% of the
Federal District |
| first_indexed | 2024-04-11T02:28:56Z |
| format | Article |
| id | doaj.art-3701d1232dd54e58b77bd300fffe3e7f |
| institution | Directory Open Access Journal |
| issn | 0101-9759 1982-3908 |
| language | English |
| last_indexed | 2024-04-11T02:28:56Z |
| publishDate | 2018-08-01 |
| publisher | Universidade Federal do Rio de Janeiro |
| record_format | Article |
| series | Anuário do Instituto de Geociências |
| spelling | doaj.art-3701d1232dd54e58b77bd300fffe3e7f2023-01-02T21:43:09ZengUniversidade Federal do Rio de JaneiroAnuário do Instituto de Geociências0101-97591982-39082018-08-01412487498http://dx.doi.org/10.11137/2018_2_487_498Drought Between 1963 and 2017 in the Federal District, BrazilAna Paula Martins do Amaral Cunha0Sheila Santana de Barros Brito1Germano Gondim Ribeiro Neto2Regina Célia dos Santos Alvalá3Centro Nacional de Monitoramento e Alertas de Desastres NaturaisCentro Nacional de Monitoramento e Alertas de Desastres NaturaisCentro Nacional de Monitoramento e Alertas de Desastres NaturaisCentro Nacional de Monitoramento e Alertas de Desastres NaturaisDrought is a climatic extreme caused by the precipitation deficit, which results in low water availability for different human activities. The drought characterization regarding of its duration and severity is still little explored, especially in regions where drought is not recurrent in a short time scale. With that in mind, this study presents a quantitative evaluation of the drought events occurred between 1964 and 2017 in the Federal District, with an emphasis on the last drought of 2016-2017. For this, the Standardized Precipitation Index (SPI) was used to evaluate the duration and severity of drought events and the Vegetation Supply Water Index (VSWI) for the spatial analysis of the drought impacts on vegetation. According to the SPI, the longest and most severe drought event, occurred in 1998. The most recent drought 2016-2017 started in April, beginning of the dry period, but remained throughout the wet season (October 2016 to March 2017). Considering ranking of duration and severity, among all the longest and severe events occurred in Brasilia, since 1963, this recent drought event can be positioned in sixth and in fourth position respectively, emphasizing its study importance in scientific community. According to VSWI, in the last drought event, the areas impacted by drought reached 75% of the Federal Districthttp://www.anuario.igeo.ufrj.br/2018_2/2018_2_487_498.pdfFederal DistrictDroughtSPIVSWI |
| spellingShingle | Ana Paula Martins do Amaral Cunha Sheila Santana de Barros Brito Germano Gondim Ribeiro Neto Regina Célia dos Santos Alvalá Drought Between 1963 and 2017 in the Federal District, Brazil Anuário do Instituto de Geociências Federal District Drought SPI VSWI |
| title | Drought Between 1963 and 2017 in the Federal District, Brazil |
| title_full | Drought Between 1963 and 2017 in the Federal District, Brazil |
| title_fullStr | Drought Between 1963 and 2017 in the Federal District, Brazil |
| title_full_unstemmed | Drought Between 1963 and 2017 in the Federal District, Brazil |
| title_short | Drought Between 1963 and 2017 in the Federal District, Brazil |
| title_sort | drought between 1963 and 2017 in the federal district brazil |
| topic | Federal District Drought SPI VSWI |
| url | http://www.anuario.igeo.ufrj.br/2018_2/2018_2_487_498.pdf |
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