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NO2 climatology in the northern subtropical region: diurnal, seasonal and interannual variability [Discussion paper]
Título : NO2 climatology in the northern subtropical region: diurnal, seasonal and interannual variability [Discussion paper]
Autor : Gil-Ojeda, ManuelYela, MargaritaGunn, L. N.Richter, A.Alonso, I.Chipperfield, M. P.Cuevas Agulló, Emilio ORCID RESEARCHERID SCOPUSID Iglesias, J.Navarro Comas, MónicaPuentedura, OlgaRodríguez González, Sergio ORCID RESEARCHERID
Palabras clave : Vertical column density; NO2 variability; Spectroscopy; Espectrómetros; Dióxido de nitrógeno
Fecha de publicación : 2007
Editor: European Geosciences Union
Citación : Atmospheric Chemistry and Physics Discussions. 2007, 7, p. 15067–15103
Versión del editor: http://www.atmos-chem-phys.net/8/1635/2008/
Resumen : Daily NO2 vertical column density (VCD) has been routinely measured by zenith sky spectroscopy at the subtropical station of Izaña (28° N, 16° W) since 1993 in the framework of the Network for the Detection of Atmospheric Composition Change (NDACC). Based on 14 years of data the first low latitude NO2 VCD climatology has been established and the main characteristics from short timescales of one day to interannual variability are presented. Instrumental descriptions and different sources of errors are described in detail. The observed diurnal cycle follows that expected by gas-phase NOx chemistry, as can be shown by the good agreement with a vertically integrated chemical box model, and is modulated by solar radiation. The seasonal evolution departs from the phase of the hours of daylight, indicating the signature of upper stratospheric temperature changes. From the data record (1993–2006) no significant long-term trends in NO2 VCD can be inferred.
Patrocinador: Routine measurements have been possible thanks to the funding provided by the projects QUILT (EU EVK2-CT2000-0059) SCOUT-O3 (EU 505390-GOCE-CT-2004), TROMPETA (MCyT CGL2004-03669) and is on-going through 15 GEOMON (EU FP6-2005-Global-4-036677).
URI : http://hdl.handle.net/20.500.11765/6491
ISSN : 1680-7367
Colecciones: Artículos científicos 2005-2009

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