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Improved retrieval of nitrogen dioxide (NO2) column densities by means of MKIV Brewer spectrophotometers
Title: | Improved retrieval of nitrogen dioxide (NO2) column densities by means of MKIV Brewer spectrophotometers |
Authors: | Diémoz, Henri; Siani, Anna Maria; Redondas, Alberto
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Keywords: | Dióxido de nitrógeno; Espectrofotómetros; Nitrogen dioxide; Spectrophotometers |
Issue Date: | 2014 |
Publisher: | European Geosciences Union |
Citation: | Atmospheric Measurement Techniques. 2014, 7(11), p. 4009-4022 |
Publisher version: | https://dx.doi.org/10.5194/amt-7-4009-2014 |
Abstract: | A new algorithm to retrieve nitrogen dioxide (NO2) column densities using MKIV ("Mark IV") Brewer spectrophotometers is described. The method includes several improvements, such as a more recent spectroscopic data set, the reduction of measurement noise, interference by other atmospheric species and instrumental settings, and a better determination of the zenith sky air mass factor. The technique was tested during an ad hoc calibration campaign at the high-altitude site of Izaña (Tenerife, Spain) and the results of the direct sun and zenith sky geometries were compared to those obtained by two reference instruments from the Network for the Detection of Atmospheric Composition Change (NDACC): a Fourier Transform Infrared Radiometer (FTIR) and an advanced visible spectrograph (RASAS-II) based on the differential optical absorption spectrometry (DOAS) technique. |
URI: | http://hdl.handle.net/20.500.11765/517 |
ISSN: | 1867-1381 1867-8548 |
Appears in Collections: | Artículos científicos 2010-2014 |
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