Artículos
Título:
Effects of stratocumulus, cumulus, and cirrus clouds on the UV-B diffuse to global ratio: Experimental and modeling results
Autor/es:
LÓPEZ, MARÍA LAURA; PALANCAR, GUSTAVO GERARDO; TOSELLI, BEATRIZ MARGARITA
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2012 vol. 113 p. 461 - 461
Resumen:
roadband measurements of global and diffuse UV-B irradiance
(280–315 nm) together with modeled and measured diffuse to global ratios
(DGR) have been used to characterize the influence of different types
of clouds on irradiance at the surface. Measurements were carried out
during 2000–2001 in Córdoba City, Argentina. The Tropospheric
Ultraviolet Visible (TUV) model was used to analyze the behavior of the
modeled DGRs for different cloud optical depths and at different
altitudes and solar zenith angles (SZA). Different cloud altitudes were
also tested, although only the results for a cloud placed at 1.5–2.5 km
of altitude are shown. A total of 16 day with stratocumulus, 12 with
cumulus, and 16 with cirrus have been studied and compared among them
and also against 21 clear sky days. Different behaviors were clearly
detected and also differentiated through the analysis of the averages
and the standard deviations of the DGRs: 1.02±0.06 for stratocumulus,