Cloud spectral transmittance in the UV and visible at Ushuaia (54° 49 minutes S, 68° 19 minutes W)

The presence of clouds is responsible for an important variation in the UV and visible radiation at the earth's surface. Although for practical purposes cloud transmittance is often considered plane in the UV and visible, a wavelength dependence is observed. In this paper we performed a statist...

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Detalles Bibliográficos
Publicado: 2002
Materias:
Clouds transmittance
UV
Visible
Clouds
Optical properties
Ozone
Statistical methods
Troposphere
Visible radiation
Ultraviolet radiation
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4482_n_p415_Diaz
http://hdl.handle.net/20.500.12110/paper_0277786X_v4482_n_p415_Diaz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0277786X_v4482_n_p415_Diaz
record_format dspace
spelling paper:paper_0277786X_v4482_n_p415_Diaz2023-06-08T15:26:16Z Cloud spectral transmittance in the UV and visible at Ushuaia (54° 49 minutes S, 68° 19 minutes W) Clouds transmittance UV Visible Clouds Optical properties Ozone Statistical methods Troposphere Clouds transmittance Visible radiation Ultraviolet radiation The presence of clouds is responsible for an important variation in the UV and visible radiation at the earth's surface. Although for practical purposes cloud transmittance is often considered plane in the UV and visible, a wavelength dependence is observed. In this paper we performed a statistical study of cloud transmittance at Ushuaia for wavelengths between 295 and 600 nm, following different procedures. A decrease of the transmittance for increasing wavelengths in the UV-A and the visible was observed (0 to 50% decrease at 600 nm regarding to 340 nm) in good agreement with the observations made by other authors. Nevertheless, for wavelengths below 320 nm our results show discrepancy with other papers. Since Ushuaia is a small town in a fairly unpolluted area, a possible reason for this differences is that, as a consequence of low ozone amounts in the troposphere, Rayleigh scatter is more important than ozone absorption, even in this part of the spectrum. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4482_n_p415_Diaz http://hdl.handle.net/20.500.12110/paper_0277786X_v4482_n_p415_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 Clouds transmittance
UV
Visible
Clouds
Optical properties
Ozone
Statistical methods
Troposphere
Clouds transmittance
Visible radiation
Ultraviolet radiation
spellingShingle Clouds transmittance
UV
Visible
Clouds
Optical properties
Ozone
Statistical methods
Troposphere
Clouds transmittance
Visible radiation
Ultraviolet radiation
Cloud spectral transmittance in the UV and visible at Ushuaia (54° 49 minutes S, 68° 19 minutes W)
topic_facet Clouds transmittance
UV
Visible
Clouds
Optical properties
Ozone
Statistical methods
Troposphere
Clouds transmittance
Visible radiation
Ultraviolet radiation
description The presence of clouds is responsible for an important variation in the UV and visible radiation at the earth's surface. Although for practical purposes cloud transmittance is often considered plane in the UV and visible, a wavelength dependence is observed. In this paper we performed a statistical study of cloud transmittance at Ushuaia for wavelengths between 295 and 600 nm, following different procedures. A decrease of the transmittance for increasing wavelengths in the UV-A and the visible was observed (0 to 50% decrease at 600 nm regarding to 340 nm) in good agreement with the observations made by other authors. Nevertheless, for wavelengths below 320 nm our results show discrepancy with other papers. Since Ushuaia is a small town in a fairly unpolluted area, a possible reason for this differences is that, as a consequence of low ozone amounts in the troposphere, Rayleigh scatter is more important than ozone absorption, even in this part of the spectrum.
title Cloud spectral transmittance in the UV and visible at Ushuaia (54° 49 minutes S, 68° 19 minutes W)
title_short Cloud spectral transmittance in the UV and visible at Ushuaia (54° 49 minutes S, 68° 19 minutes W)
title_full Cloud spectral transmittance in the UV and visible at Ushuaia (54° 49 minutes S, 68° 19 minutes W)
title_fullStr Cloud spectral transmittance in the UV and visible at Ushuaia (54° 49 minutes S, 68° 19 minutes W)
title_full_unstemmed Cloud spectral transmittance in the UV and visible at Ushuaia (54° 49 minutes S, 68° 19 minutes W)
title_sort cloud spectral transmittance in the uv and visible at ushuaia (54° 49 minutes s, 68° 19 minutes w)
publishDate 2002
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v4482_n_p415_Diaz
http://hdl.handle.net/20.500.12110/paper_0277786X_v4482_n_p415_Diaz
_version_ 1768546628646469632

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