Global and direct UV irradiance variation in the Nahuel Huapi National Park (Patagonia, Argentina) after the eruption of Puyehue-Cordon Caulle (Chile)

On June 4th, 2011, the Puyehue-Cordon Caulle volcanic complex (40°35'25″S 72°07'02″W, Chile) started eruption, sending ash 45,000 feet into the atmosphere. After the initial period, the eruption continued for several months, with less intensity. Changes in global irradiance in the UV-B and...

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Detalles Bibliográficos
Publicado:	2014
Materias:	Direct irradiance Global irradiance UV radiation Volcanic eruptions Atmospheric aerosols Ultraviolet radiation Aerosol optical depths Field campaign Simultaneous measurement Volcanic complex Volcano activity Volcanoes
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v112_n_p47_Diaz http://hdl.handle.net/20.500.12110/paper_13646826_v112_n_p47_Diaz
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_13646826_v112_n_p47_Diaz
record_format	dspace
spelling	paper:paper_13646826_v112_n_p47_Diaz2023-06-08T16:11:49Z Global and direct UV irradiance variation in the Nahuel Huapi National Park (Patagonia, Argentina) after the eruption of Puyehue-Cordon Caulle (Chile) Direct irradiance Global irradiance UV radiation Volcanic eruptions Atmospheric aerosols Ultraviolet radiation Aerosol optical depths Direct irradiance Field campaign Global irradiance Simultaneous measurement Volcanic complex Volcanic eruptions Volcano activity Volcanoes On June 4th, 2011, the Puyehue-Cordon Caulle volcanic complex (40°35'25″S 72°07'02″W, Chile) started eruption, sending ash 45,000 feet into the atmosphere. After the initial period, the eruption continued for several months, with less intensity. Changes in global irradiance in the UV-B and UV-A, and direct irradiance and AOD in the UV-A, as consequence of the eruption, were studied. Global irradiance has been permanently measured at the Laboratory of Photobiology (LPh) (41.13S, 71.42W, 804. msl) since 1998. In addition, in the frame of a project to study altitude effect on direct and global irradiance, field campaigns were performed during September 17th to 23rd, 2010 and September 14th to 18th, 2011, in the region of the Nahuel Huapi National Park, near 100. km from the eruption. In those periods, simultaneous measurements of direct and global irradiance and aerosol optical depth (AOD) were carried out at three sites: Laboratory of Photobiology (LPh), Mt Otto (41.15S, 71.38W, 1386. msl) and Mt Catedral (41.17S, 71.48W, 1930. msl). The analysis of aerosols in 2011, three to four month after the eruption started, showed the presence of larger particles and more variability than in 2010, at all sites. Global irradiance, at LPh, also exhibited larger variability, compared to 1999, when no eruption or any other event that could have produced major changes in aerosols occurred. The mean decrease, as consequence of the volcano activity, at LPh, was around 20%, at 305. nm and closed to 10%, at 320. nm. At 380. nm, the decrease was very small and not statistically significant, although in particular days, with large aerosol load, a significant decrease was observed. Direct irradiance, in the UV-A, showed larger decrease than global irradiance. The effect of the eruption was more pronounced at the low altitude site. © 2014 Elsevier Ltd. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v112_n_p47_Diaz http://hdl.handle.net/20.500.12110/paper_13646826_v112_n_p47_Diaz
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Direct irradiance Global irradiance UV radiation Volcanic eruptions Atmospheric aerosols Ultraviolet radiation Aerosol optical depths Direct irradiance Field campaign Global irradiance Simultaneous measurement Volcanic complex Volcanic eruptions Volcano activity Volcanoes
spellingShingle	Direct irradiance Global irradiance UV radiation Volcanic eruptions Atmospheric aerosols Ultraviolet radiation Aerosol optical depths Direct irradiance Field campaign Global irradiance Simultaneous measurement Volcanic complex Volcanic eruptions Volcano activity Volcanoes Global and direct UV irradiance variation in the Nahuel Huapi National Park (Patagonia, Argentina) after the eruption of Puyehue-Cordon Caulle (Chile)
topic_facet	Direct irradiance Global irradiance UV radiation Volcanic eruptions Atmospheric aerosols Ultraviolet radiation Aerosol optical depths Direct irradiance Field campaign Global irradiance Simultaneous measurement Volcanic complex Volcanic eruptions Volcano activity Volcanoes
description	On June 4th, 2011, the Puyehue-Cordon Caulle volcanic complex (40°35'25″S 72°07'02″W, Chile) started eruption, sending ash 45,000 feet into the atmosphere. After the initial period, the eruption continued for several months, with less intensity. Changes in global irradiance in the UV-B and UV-A, and direct irradiance and AOD in the UV-A, as consequence of the eruption, were studied. Global irradiance has been permanently measured at the Laboratory of Photobiology (LPh) (41.13S, 71.42W, 804. msl) since 1998. In addition, in the frame of a project to study altitude effect on direct and global irradiance, field campaigns were performed during September 17th to 23rd, 2010 and September 14th to 18th, 2011, in the region of the Nahuel Huapi National Park, near 100. km from the eruption. In those periods, simultaneous measurements of direct and global irradiance and aerosol optical depth (AOD) were carried out at three sites: Laboratory of Photobiology (LPh), Mt Otto (41.15S, 71.38W, 1386. msl) and Mt Catedral (41.17S, 71.48W, 1930. msl). The analysis of aerosols in 2011, three to four month after the eruption started, showed the presence of larger particles and more variability than in 2010, at all sites. Global irradiance, at LPh, also exhibited larger variability, compared to 1999, when no eruption or any other event that could have produced major changes in aerosols occurred. The mean decrease, as consequence of the volcano activity, at LPh, was around 20%, at 305. nm and closed to 10%, at 320. nm. At 380. nm, the decrease was very small and not statistically significant, although in particular days, with large aerosol load, a significant decrease was observed. Direct irradiance, in the UV-A, showed larger decrease than global irradiance. The effect of the eruption was more pronounced at the low altitude site. © 2014 Elsevier Ltd.
title	Global and direct UV irradiance variation in the Nahuel Huapi National Park (Patagonia, Argentina) after the eruption of Puyehue-Cordon Caulle (Chile)
title_short	Global and direct UV irradiance variation in the Nahuel Huapi National Park (Patagonia, Argentina) after the eruption of Puyehue-Cordon Caulle (Chile)
title_full	Global and direct UV irradiance variation in the Nahuel Huapi National Park (Patagonia, Argentina) after the eruption of Puyehue-Cordon Caulle (Chile)
title_fullStr	Global and direct UV irradiance variation in the Nahuel Huapi National Park (Patagonia, Argentina) after the eruption of Puyehue-Cordon Caulle (Chile)
title_full_unstemmed	Global and direct UV irradiance variation in the Nahuel Huapi National Park (Patagonia, Argentina) after the eruption of Puyehue-Cordon Caulle (Chile)
title_sort	global and direct uv irradiance variation in the nahuel huapi national park (patagonia, argentina) after the eruption of puyehue-cordon caulle (chile)
publishDate	2014
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v112_n_p47_Diaz http://hdl.handle.net/20.500.12110/paper_13646826_v112_n_p47_Diaz
_version_	1768546362999177216

Global and direct UV irradiance variation in the Nahuel Huapi National Park (Patagonia, Argentina) after the eruption of Puyehue-Cordon Caulle (Chile)

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