Glyoxal vertical columns from GOME-2 backscattered light measurements and comparisons with a global model
TLDR
In this article, a two-step DOAS approach was used to calculate glyoxal vertical column densities from nadir backscattered radiances measured from 2007 to 2009 by the spaceborne GOME-2/METOP-A sensor.Abstract:
. Glyoxal vertical column densities have been retrieved from nadir backscattered radiances measured from 2007 to 2009 by the spaceborne GOME-2/METOP-A sensor. The retrieval algorithm is based on the DOAS technique and optimized settings have been used to determine glyoxal slant columns. The liquid water absorption is accounted for using a two-step DOAS approach, leading to a drastic improvement of the fit quality over remote clear water oceans. Air mass factors are calculated by means of look-up tables of weighting functions pre-calculated with the LIDORT v3.3 radiative transfer model and using a priori glyoxal vertical distributions provided by the IMAGESv2 chemical transport model. The total error estimate comprises random and systematic errors associated to the DOAS fit, the air mass factor calculation and the cloud correction. The highest glyoxal vertical column densities are mainly observed in continental tropical regions, while the mid-latitude columns strongly depend on the season with maximum values during warm months. An anthropogenic signature is also observed in highly populated regions of Asia. Comparisons with glyoxal columns simulated with IMAGESv2 in different regions of the world generally point to a missing glyoxal source, most probably of biogenic origin.read more
Citations
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Journal ArticleDOI
Diurnal, seasonal and long-term variations of global formaldehyde columns inferred from combined OMI and GOME-2 observations
I. De Smedt,Trissevgeni Stavrakou,François Hendrick,Thomas Danckaert,T. Vlemmix,Gaia Pinardi,Nicolas Theys,Christophe Lerot,Clio Gielen,Corinne Vigouroux,Christian Hermans,Caroline Fayt,Pepijn Veefkind,Jean-François Müller,M. Van Roozendael +14 more
TL;DR: In this article, the authors present the new version (v14) of the BIRA-IASB algorithm for the retrieval of formaldehyde (H2CO) columns from spaceborne UV-visible sensors.
Journal ArticleDOI
An improved NO 2 retrieval for the GOME-2 satellite instrument
TL;DR: In this paper, an improved GOME-2 NO2 retrieval is described which reduces the scatter of the individual NO2 columns globally but in particular in the region of the Southern Atlantic Anomaly.
Journal ArticleDOI
Ship-based detection of glyoxal over the remote tropical Pacific Ocean
TL;DR: The first detection of glyoxal (CHOCHO) over the tropical Pacific Ocean in the Marine Boundary Layer (MBL) was made by means of the University of Colorado Ship Multi-Axis Differential Optical Absorption Spectroscopy (CU SMAX-DOAS) instrument aboard the research vessel Ronald H. Brown as mentioned in this paper.
Journal ArticleDOI
Improved retrieval of global tropospheric formaldehyde columns from GOME-2/MetOp-A addressing noise reduction and instrumental degradation issues
I. De Smedt,M. Van Roozendael,Trissevgeni Stavrakou,Jean-François Müller,Christophe Lerot,Nicolas Theys,Pieter Valks,Nan Hao +7 more
TL;DR: In this article, the authors presented a new dataset of formaldehyde vertical columns retrieved from observations of GOME-2 on board the EUMETSAT MetOp-A platform between 2007 and 2011.
Journal ArticleDOI
Aircraft measurements of BrO, IO, glyoxal, NO 2 , H 2 O, O 2 –O 2 and aerosol extinction profiles in the tropics: comparison with aircraft-/ship-based in situ and lidar measurements
Rainer Volkamer,Rainer Volkamer,Sunil Baidar,Sunil Baidar,Teresa Campos,Sean Coburn,Sean Coburn,Joshua P. DiGangi,Joshua P. DiGangi,Barbara Dix,Edwin W. Eloranta,Theodore K. Koenig,Theodore K. Koenig,Bruce Morley,Ivan Ortega,Ivan Ortega,Bridget R. Pierce,Mike Reeves,R. Sinreich,Siyuan Wang,Siyuan Wang,Siyuan Wang,Mark A. Zondlo,P. Romashkin +23 more
TL;DR: In this paper, the results of two research flights (RF12, RF17) over the tropical Eastern Pacific Ocean (tEPO) as part of the "Tropical Ocean tRoposphere Exchange of Reactive halogens and Oxygenated hydrocarbons" (TORERO) project are presented.
References
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GOME-2 on MetOp
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TL;DR: The second Global Ozone Monitoring Experiment (GOME-2) as mentioned in this paper is an improved version of GOME-1, launched in 1995 onboard the second European Remote Sensing Satellite (ERS-2).
Journal ArticleDOI
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TL;DR: In this article, a linear multiple regression retrieval algorithm was used to retrieve stratospheric and tropospheric BrO vertical columns from zenith-sky and off-axis viewing geometries.
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TL;DR: In this paper, a model accounting for the effect of ocean Raman scattering on the filling in of solar Fraunhofer lines measured by satellite backscatter ultraviolet (buy) instruments in the cloudless atmosphere over clear ocean waters is developed and compared with observations from the Global Ozone Monitoring Experiment (GONE).
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