Título
Nitrogen dioxide DOAS measurements form ground and space: comparison of zenith scattered sunlight ground-based measurements and OMI data in Central Mexico
Autor
Claudia Ines Rivera Cardenas
Wolfgang Stremme
Michel Grutter
Nivel de Acceso
Acceso Abierto
Referencia de publicación
URL/http://www.revistascca.unam.mx/atm/index.php/atm/article/view/32980
Referencia de datos
http://www.revistascca.unam.mx/atm/index.php/atm/article/downloadSuppFile/32980/3516
http://www.revistascca.unam.mx/atm/index.php/atm/article/downloadSuppFile/32980/3517
http://www.revistascca.unam.mx/atm/index.php/atm/article/downloadSuppFile/32980/3518
http://www.revistascca.unam.mx/atm/index.php/atm/article/downloadSuppFile/32980/3519
http://www.revistascca.unam.mx/atm/index.php/atm/article/downloadSuppFile/32980/3520
http://www.revistascca.unam.mx/atm/index.php/atm/article/downloadSuppFile/32980/3522
http://www.revistascca.unam.mx/atm/index.php/atm/article/downloadSuppFile/32980/3523
http://www.revistascca.unam.mx/atm/index.php/atm/article/downloadSuppFile/32980/3525
Materias
CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA - (CTI) DOAS - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) OMI - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) nitrogen dioxide - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) ground-based - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) space-borne - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) central Mexico - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236]) - ([Atmósfera; Vol 26, No 3 (2013), ISSN:0187-6236])
Resumen o descripción
The use of satellite data in combination with ground-based measurements can provide valuable information about atmospheric chemistry and air quality. In this study, ground-based Differential Optical Absorption Spectroscopy (DOAS) measurements of nitrogen dioxide (NO2) conducted in central Mexico are compared with the space-borne Ozone Monitoring Instrument (OMI) dataset of 2006-2011. Ground-based measurements exhibited large day-to-day variations and were on average three times higher than the space-borne derived average over the observation site. This difference is attributed to strong horizontal inhomogeneity of the lower layer of the measured NO2 columns, sampled over a large footprint from the satellite instrument. Also, a reduced sensitivity of the satellite observation near the surface, where the largest concentrations are expected, could be responsible for this large discrepancy. From the analyzed OMI dataset, distribution maps of NO2 above central Mexico were reconstructed, allowing to identify three main areas with increased NO2 column densities: The dominating metropolitan area of Mexico City, the heavily industrialized region of Tula to the north and the Cuernavaca valley to the south. In this analysis, seasonal variability of NO2 columns over central Mexico was detected, finding higher NO2 columns during the dry and cold season, followed by the dry and warm period, and finally the lowest NO2 columns were found during the rainy season. Pollution transport of this gas from Tula into Mexico City, as well as towards the Cuernavaca valley, is evident from this dataset.
Editor
Universidad Nacional Autónoma de México. Centro de Ciencias de la Atmósfera
Fecha de publicación
4 de marzo de 2013
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Fuente
Atmósfera; Vol 26, No 3 (2013)
ISSN:0187-6236
Idioma
Inglés
Audiencia
Investigadores
Estudiantes
Repositorio Orígen
Repositorio Institucional del Centro de Ciencias de la Atmósfera de la UNAM
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