Precipitation changes of Valdivia city (Chile) during the past 150 years
Extensive records of rainfall are considered fundamental for analysing potential current climate change especially in zones where ecosystems are highly humidity dependent. Valdivia city has the longest instrumental record in the nation, starting in 1853, though including a lapse between 1880 and 189...
Published in: | Bosque (Valdivia) |
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Format: | Article in Journal/Newspaper |
Language: | Spanish |
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Universidad Austral de Chile, Facultad de Ciencias Forestales y Recursos Naturales.
2017
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Online Access: | http://revistas.uach.cl/index.php/bosque/article/view/314 https://doi.org/10.4067/S0717-92002013000200008 |
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ftuaustralchile:oai:revistas.uach.cl:article/314 2024-09-15T17:48:15+00:00 Precipitation changes of Valdivia city (Chile) during the past 150 years Cambios en la precipitación de la ciudad de Valdivia (Chile) durante los últimos 150 años González-Reyes, Álvaro Muñoz, Ariel A 2017-05-30 application/pdf http://revistas.uach.cl/index.php/bosque/article/view/314 https://doi.org/10.4067/S0717-92002013000200008 spa spa Universidad Austral de Chile, Facultad de Ciencias Forestales y Recursos Naturales. http://revistas.uach.cl/index.php/bosque/article/view/314/329 http://revistas.uach.cl/index.php/bosque/article/view/314 doi:10.4067/S0717-92002013000200008 Derechos de autor 2013 BOSQUE BOSQUE; Vol. 34 No. 2 (2013); 191-200 BOSQUE; Vol. 34 Núm. 2 (2013); 191-200 0717-9200 0304-8799 ecorregión valdiviana eventos extremos precipitación de otoño El Niño Oscilación del Sur ENSO Oscilación Antártica AAO Valdivian ecoregion extreme values autumn precipitation El Niño Southern Oscillation ENSO Antarctic Oscillation AAO info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed article Artículo evaluado por pares 2017 ftuaustralchile https://doi.org/10.4067/S0717-92002013000200008 2024-08-30T03:32:40Z Extensive records of rainfall are considered fundamental for analysing potential current climate change especially in zones where ecosystems are highly humidity dependent. Valdivia city has the longest instrumental record in the nation, starting in 1853, though including a lapse between 1880 and 1899. The present study had the main objective of evaluating changes in precipitation in annual, seasonal and monthly periods and distribution extreme values from 1901 to 2005; further, the activity of global scale climate forcing, such as ENSO and AAO, over the precipitation. Additionally, we have filled this gap period with other instrumental historical registers and Araucaria araucana Tree Ring chronology by evaluated rainfall shifts since 1853. Annual, seasonal and monthly decreases were registered between 1901 and 2005. Especially significant for 1853 - 2005, 1901 - 2005, autumn and September. Negative extreme values (droughts) were more frequent in the second half-century, compared with positive extreme values obtained prior to 1950. A high concentration of negative values was also registered post-1980, especially in autumn and winter. Significant and negative correlations were registered between the SOI indexes of ENSO, with a strong relationship across the year, except in summer. The AAO has registered negative and significant relationships as well, particularly during autumn, and February and March. These decreases suggest an extension of summer-time conditions in Valdivia for longer intervals, concentrating precipitation in winter. Registros extensos de precipitación son fundamentales para analizar potenciales cambios en el clima, especialmente en zonas que albergan ecosistemas pluvio-dependientes. La ciudad de Valdivia posee el registro más extenso de Chile, comenzando en 1853, pero encontrándose incompleto entre 1880-1899. El presente estudio tuvo por objetivo central evaluar los cambios en la precipitación anual, estacional y mensual de Valdivia, y la distribución de valores extremos entre 1901 - 2005. ... Article in Journal/Newspaper Antarc* Antarctic Antártica Revistas Electronicas UACh en Texto Completo (Universidad Austral de Chile) Bosque (Valdivia) 34 2 15 16 |
institution |
Open Polar |
collection |
Revistas Electronicas UACh en Texto Completo (Universidad Austral de Chile) |
op_collection_id |
ftuaustralchile |
language |
Spanish |
topic |
ecorregión valdiviana eventos extremos precipitación de otoño El Niño Oscilación del Sur ENSO Oscilación Antártica AAO Valdivian ecoregion extreme values autumn precipitation El Niño Southern Oscillation ENSO Antarctic Oscillation AAO |
spellingShingle |
ecorregión valdiviana eventos extremos precipitación de otoño El Niño Oscilación del Sur ENSO Oscilación Antártica AAO Valdivian ecoregion extreme values autumn precipitation El Niño Southern Oscillation ENSO Antarctic Oscillation AAO González-Reyes, Álvaro Muñoz, Ariel A Precipitation changes of Valdivia city (Chile) during the past 150 years |
topic_facet |
ecorregión valdiviana eventos extremos precipitación de otoño El Niño Oscilación del Sur ENSO Oscilación Antártica AAO Valdivian ecoregion extreme values autumn precipitation El Niño Southern Oscillation ENSO Antarctic Oscillation AAO |
description |
Extensive records of rainfall are considered fundamental for analysing potential current climate change especially in zones where ecosystems are highly humidity dependent. Valdivia city has the longest instrumental record in the nation, starting in 1853, though including a lapse between 1880 and 1899. The present study had the main objective of evaluating changes in precipitation in annual, seasonal and monthly periods and distribution extreme values from 1901 to 2005; further, the activity of global scale climate forcing, such as ENSO and AAO, over the precipitation. Additionally, we have filled this gap period with other instrumental historical registers and Araucaria araucana Tree Ring chronology by evaluated rainfall shifts since 1853. Annual, seasonal and monthly decreases were registered between 1901 and 2005. Especially significant for 1853 - 2005, 1901 - 2005, autumn and September. Negative extreme values (droughts) were more frequent in the second half-century, compared with positive extreme values obtained prior to 1950. A high concentration of negative values was also registered post-1980, especially in autumn and winter. Significant and negative correlations were registered between the SOI indexes of ENSO, with a strong relationship across the year, except in summer. The AAO has registered negative and significant relationships as well, particularly during autumn, and February and March. These decreases suggest an extension of summer-time conditions in Valdivia for longer intervals, concentrating precipitation in winter. Registros extensos de precipitación son fundamentales para analizar potenciales cambios en el clima, especialmente en zonas que albergan ecosistemas pluvio-dependientes. La ciudad de Valdivia posee el registro más extenso de Chile, comenzando en 1853, pero encontrándose incompleto entre 1880-1899. El presente estudio tuvo por objetivo central evaluar los cambios en la precipitación anual, estacional y mensual de Valdivia, y la distribución de valores extremos entre 1901 - 2005. ... |
format |
Article in Journal/Newspaper |
author |
González-Reyes, Álvaro Muñoz, Ariel A |
author_facet |
González-Reyes, Álvaro Muñoz, Ariel A |
author_sort |
González-Reyes, Álvaro |
title |
Precipitation changes of Valdivia city (Chile) during the past 150 years |
title_short |
Precipitation changes of Valdivia city (Chile) during the past 150 years |
title_full |
Precipitation changes of Valdivia city (Chile) during the past 150 years |
title_fullStr |
Precipitation changes of Valdivia city (Chile) during the past 150 years |
title_full_unstemmed |
Precipitation changes of Valdivia city (Chile) during the past 150 years |
title_sort |
precipitation changes of valdivia city (chile) during the past 150 years |
publisher |
Universidad Austral de Chile, Facultad de Ciencias Forestales y Recursos Naturales. |
publishDate |
2017 |
url |
http://revistas.uach.cl/index.php/bosque/article/view/314 https://doi.org/10.4067/S0717-92002013000200008 |
genre |
Antarc* Antarctic Antártica |
genre_facet |
Antarc* Antarctic Antártica |
op_source |
BOSQUE; Vol. 34 No. 2 (2013); 191-200 BOSQUE; Vol. 34 Núm. 2 (2013); 191-200 0717-9200 0304-8799 |
op_relation |
http://revistas.uach.cl/index.php/bosque/article/view/314/329 http://revistas.uach.cl/index.php/bosque/article/view/314 doi:10.4067/S0717-92002013000200008 |
op_rights |
Derechos de autor 2013 BOSQUE |
op_doi |
https://doi.org/10.4067/S0717-92002013000200008 |
container_title |
Bosque (Valdivia) |
container_volume |
34 |
container_issue |
2 |
container_start_page |
15 |
op_container_end_page |
16 |
_version_ |
1810289415993425920 |