A seasonal climatology of UV reflectivity for southern South America

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Abstract: A seasonal climatology for the Lambertian equivalent reflectivity (LER) in ultraviolet (UV) for southern South America is introduced. The study region was limited by 10° and 60°S and by 100° and 30° W; the data set spanned the period 1978–2015. Features of the seasonal means and of the qua...

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Autores principales: Yuchechen, Adrián E., Canziani, Pablo O., Lakkis, Susan Gabriela
Formato: Artículo
Lenguaje:Inglés
Publicado: Remote Sensing and Photogrammetry Society 2019
Materias:
CLIMATOLOGIA
REFLECTIVIDAD
INVESTIGACION
RADIACION ULTRAVIOLETA
Acceso en línea:https://repositorio.uca.edu.ar/handle/123456789/5481
Aporte de:
Repositorio Institucional de la Universidad Católica Argentina (UCA) de Universidad Católica Argentina
id I33-R139-123456789-5481
record_format dspace
spelling I33-R139-123456789-54812024-03-07T12:25:21Z A seasonal climatology of UV reflectivity for southern South America Yuchechen, Adrián E. Canziani, Pablo O. Lakkis, Susan Gabriela CLIMATOLOGIA REFLECTIVIDAD INVESTIGACION RADIACION ULTRAVIOLETA Abstract: A seasonal climatology for the Lambertian equivalent reflectivity (LER) in ultraviolet (UV) for southern South America is introduced. The study region was limited by 10° and 60°S and by 100° and 30° W; the data set spanned the period 1978–2015. Features of the seasonal means and of the quarterly (Q) and the interannual (IA) variabilities for each season were ascribed to atmospheric and oceanic processes of local, regional, or global origin which lead to the formation or maintenance of clouds. Shifts in the Q and IA time series were detected, most notably in the early 1990s. Linear trends were also estimated. The largest positive and negative trends in the Q time series were found along the Peruvian Andes (PA) (3.20 reflectivity units [RU] decade−1) and east of the Chapada Diamantina (CD) and the Serra do Espinhaço (SE) in Brazil (−1.40 RU decade−1), respectively. The largest positive and negative trends in the IA time series were found in PA (6 RU decade−1, summer) and east of CD and SE (−2.50 RU decade−1, spring), respectively. The linkages between UV LER and regional or global circulation indices were also studied. The largest relationships were found with the Dipole Mode Index on a Q basis and with the Southern Oscillation Index on an IA basis in winter. 2019-06-06T00:48:28Z 2019-06-06T00:48:28Z 2017 Artículo Yuchechen, A.E., Lakkis, S.G., Canziani, P.O. A seasonal climatology of UV reflectivity for southern South America [en línea]. En International Journal of Remote Sensing 38, 2017. Disponible en: https://repositorio.uca.edu.ar/handle/123456789/5481 0143-1161 e-1366-5901 https://repositorio.uca.edu.ar/handle/123456789/5481 10.1080/01431161.2017.1388935 eng Acceso Abierto https://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf AMERICA DEL SUR Remote Sensing and Photogrammetry Society International Journal of Remote Sensing Vol. 38, 2017 ISSN 0143-1161 e-ISSN 1366-5901
institution Universidad Católica Argentina
institution_str I-33
repository_str R-139
collection Repositorio Institucional de la Universidad Católica Argentina (UCA)
language Inglés
topic CLIMATOLOGIA
REFLECTIVIDAD
INVESTIGACION
RADIACION ULTRAVIOLETA
spellingShingle CLIMATOLOGIA
REFLECTIVIDAD
INVESTIGACION
RADIACION ULTRAVIOLETA
Yuchechen, Adrián E.
Canziani, Pablo O.
Lakkis, Susan Gabriela
A seasonal climatology of UV reflectivity for southern South America
topic_facet CLIMATOLOGIA
REFLECTIVIDAD
INVESTIGACION
RADIACION ULTRAVIOLETA
description Abstract: A seasonal climatology for the Lambertian equivalent reflectivity (LER) in ultraviolet (UV) for southern South America is introduced. The study region was limited by 10° and 60°S and by 100° and 30° W; the data set spanned the period 1978–2015. Features of the seasonal means and of the quarterly (Q) and the interannual (IA) variabilities for each season were ascribed to atmospheric and oceanic processes of local, regional, or global origin which lead to the formation or maintenance of clouds. Shifts in the Q and IA time series were detected, most notably in the early 1990s. Linear trends were also estimated. The largest positive and negative trends in the Q time series were found along the Peruvian Andes (PA) (3.20 reflectivity units [RU] decade−1) and east of the Chapada Diamantina (CD) and the Serra do Espinhaço (SE) in Brazil (−1.40 RU decade−1), respectively. The largest positive and negative trends in the IA time series were found in PA (6 RU decade−1, summer) and east of CD and SE (−2.50 RU decade−1, spring), respectively. The linkages between UV LER and regional or global circulation indices were also studied. The largest relationships were found with the Dipole Mode Index on a Q basis and with the Southern Oscillation Index on an IA basis in winter.
format Artículo
author Yuchechen, Adrián E.
Canziani, Pablo O.
Lakkis, Susan Gabriela
author_facet Yuchechen, Adrián E.
Canziani, Pablo O.
Lakkis, Susan Gabriela
author_sort Yuchechen, Adrián E.
title A seasonal climatology of UV reflectivity for southern South America
title_short A seasonal climatology of UV reflectivity for southern South America
title_full A seasonal climatology of UV reflectivity for southern South America
title_fullStr A seasonal climatology of UV reflectivity for southern South America
title_full_unstemmed A seasonal climatology of UV reflectivity for southern South America
title_sort seasonal climatology of uv reflectivity for southern south america
publisher Remote Sensing and Photogrammetry Society
publishDate 2019
url https://repositorio.uca.edu.ar/handle/123456789/5481
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