Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca Colombia
The Synthesized Drought Index in the Valle del Cauca was evaluated, applying Principal Component Analysis to satellite images that described: Land Surface Temperature, Normalized Difference Vegetation Index and Precipitation. The magnitude of drought represented by this index was identified in the f...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2020-07-01
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| Series: | Dyna |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/dyna/article/view/83221 |
| _version_ | 1797838832470589440 |
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| author | Carlos David Ojeda Flechas Jaime Alejandro Burbano Rodriguez Yesid Carvajal Escobar Francisco Luis Hernández Torres |
| author_facet | Carlos David Ojeda Flechas Jaime Alejandro Burbano Rodriguez Yesid Carvajal Escobar Francisco Luis Hernández Torres |
| author_sort | Carlos David Ojeda Flechas |
| collection | DOAJ |
| description | The Synthesized Drought Index in the Valle del Cauca was evaluated, applying Principal Component Analysis to satellite images that described: Land Surface Temperature, Normalized Difference Vegetation Index and Precipitation. The magnitude of drought represented by this index was identified in the first component and validated with the Quarterly Standardized Precipitation Index (SPI – 3), obtained from 78 weather stations, which achieved correlations of between 0.55 and 0.71 during warm ENSO events. Comprehensive drought in the department was characterized by exhibiting areas of non-drought in the southwest, in the center-south a transition phase from wet to extremely dry, the Inter-Andean Valley showed sectors of severe drought, and to the east, extremely dry areas. Additionally, in a pilot municipality in the driest area of the department, a susceptibility model was implemented to detect areas affected by drought, applying the Analytical Hierarchical Process.
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| first_indexed | 2024-04-09T15:48:17Z |
| format | Article |
| id | doaj.art-47ff687feb5d49e69c76619411589c03 |
| institution | Directory Open Access Journal |
| issn | 0012-7353 2346-2183 |
| language | English |
| last_indexed | 2024-04-09T15:48:17Z |
| publishDate | 2020-07-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Dyna |
| spelling | doaj.art-47ff687feb5d49e69c76619411589c032023-04-26T18:24:01ZengUniversidad Nacional de ColombiaDyna0012-73532346-21832020-07-018721410.15446/dyna.v87n214.83221Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca ColombiaCarlos David Ojeda Flechas0Jaime Alejandro Burbano Rodriguez1Yesid Carvajal Escobar2Francisco Luis Hernández Torres3Universidad del ValleUniversidad del ValleUniversidad del ValleUniversidad del ValleThe Synthesized Drought Index in the Valle del Cauca was evaluated, applying Principal Component Analysis to satellite images that described: Land Surface Temperature, Normalized Difference Vegetation Index and Precipitation. The magnitude of drought represented by this index was identified in the first component and validated with the Quarterly Standardized Precipitation Index (SPI – 3), obtained from 78 weather stations, which achieved correlations of between 0.55 and 0.71 during warm ENSO events. Comprehensive drought in the department was characterized by exhibiting areas of non-drought in the southwest, in the center-south a transition phase from wet to extremely dry, the Inter-Andean Valley showed sectors of severe drought, and to the east, extremely dry areas. Additionally, in a pilot municipality in the driest area of the department, a susceptibility model was implemented to detect areas affected by drought, applying the Analytical Hierarchical Process. https://revistas.unal.edu.co/index.php/dyna/article/view/83221Principal Components Analysis (PCA)Synthesized Drought Index (SDI)Standardized Precipitation Index (SPI)Comprehensive DroughtEl Niño-Southern Oscillation (ENSO) |
| spellingShingle | Carlos David Ojeda Flechas Jaime Alejandro Burbano Rodriguez Yesid Carvajal Escobar Francisco Luis Hernández Torres Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca Colombia Dyna Principal Components Analysis (PCA) Synthesized Drought Index (SDI) Standardized Precipitation Index (SPI) Comprehensive Drought El Niño-Southern Oscillation (ENSO) |
| title | Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca Colombia |
| title_full | Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca Colombia |
| title_fullStr | Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca Colombia |
| title_full_unstemmed | Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca Colombia |
| title_short | Characterization of comprehensive drought events associated with the ENSO warm phase through satellite images in the Valle del Cauca Colombia |
| title_sort | characterization of comprehensive drought events associated with the enso warm phase through satellite images in the valle del cauca colombia |
| topic | Principal Components Analysis (PCA) Synthesized Drought Index (SDI) Standardized Precipitation Index (SPI) Comprehensive Drought El Niño-Southern Oscillation (ENSO) |
| url | https://revistas.unal.edu.co/index.php/dyna/article/view/83221 |
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