A new stratospheric and tropospheric NO2 retrieval algorithm for nadir-viewing satellite instruments : applications to OMI
Eric Bucsela,Nickolay A. Krotkov,Edward A. Celarier,Edward A. Celarier,Lok N. Lamsal,Lok N. Lamsal,William H. Swartz,William H. Swartz,P. K. Bhartia,K. F. Boersma,K. F. Boersma,J. P. Veefkind,James F. Gleason,Kenneth E. Pickering +13 more
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In this article, a new algorithm for the retrieval of nitrogen dioxide (NO2) vertical columns from nadir-viewing satellite instruments is described, and the sensitivity of the retrieval to assumptions made in the stratosphere-troposphere separation is discussed and shown to be small, in an absolute sense, for most regions.Abstract:
. We describe a new algorithm for the retrieval of nitrogen dioxide (NO2) vertical columns from nadir-viewing satellite instruments. This algorithm (SP2) is the basis for the Version 2.1 OMI This algorithm (SP2) is the basis for the Version 2.1 Ozone Monitoring Instrument (OMI) NO2 Standard Product and features a novel method for separating the stratospheric and tropospheric columns. NO2 Standard Product and features a novel method for separating the stratospheric and tropospheric columns. The approach estimates the stratospheric NO2 directly from satellite data without using stratospheric chemical transport models or assuming any global zonal wave pattern. Tropospheric NO2 columns are retrieved using air mass factors derived from high-resolution radiative transfer calculations and a monthly climatology of NO2 profile shapes. We also present details of how uncertainties in the retrieved columns are estimated. The sensitivity of the retrieval to assumptions made in the stratosphere–troposphere separation is discussed and shown to be small, in an absolute sense, for most regions. We compare daily and monthly mean global OMI NO2 retrievals using the SP2 algorithm with those of the original Version 1 Standard Product (SP1) and the Dutch DOMINO product. The SP2 retrievals yield significantly smaller summertime tropospheric columns than SP1, particularly in polluted regions, and are more consistent with validation studies. SP2 retrievals are also relatively free of modeling artifacts and negative tropospheric NO2 values. In a reanalysis of an INTEX-B validation study, we show that SP2 largely eliminates an ~20% discrepancy that existed between OMI and independent in situ springtime NO2 SP1 measurements.read more
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Aura OMI observations of regional SO2 and NO2 pollution changes from 2005 to 2015
Nickolay A. Krotkov,Chris A. McLinden,Can Li,Lok N. Lamsal,Edward A. Celarier,Sergey Marchenko,William H. Swartz,Eric Bucsela,Joanna Joiner,Bryan N. Duncan,K. Folkert Boersma,K. Folkert Boersma,J. Pepijn Veefkind,Pieternel F. Levelt,Vitali Fioletov,Russell R. Dickerson,Hao He,Zifeng Lu,David G. Streets +18 more
TL;DR: The Ozone Monitoring Instrument (OMI) onboard NASA's Aura satellite has been providing global observations of the ozone layer and key atmospheric pollutant gases, such as nitrogen dioxide (NO2) and sulfur dioxide (SO2), since October 2004 as mentioned in this paper.
Journal ArticleDOI
Emissions estimation from satellite retrievals: A review of current capability
David G. Streets,Timothy P. Canty,Gregory R. Carmichael,Benjamin de Foy,Russell R. Dickerson,Bryan N. Duncan,David P. Edwards,John Haynes,Daven K. Henze,Marc Houyoux,Daniel J. Jacob,Nickolay A. Krotkov,Lok N. Lamsal,Yang Liu,Zifeng Lu,Randall V. Martin,Gabriele Pfister,Robert W. Pinder,Ross J. Salawitch,K. Wecht +19 more
TL;DR: In this article, a comprehensive literature review and comprising input by both satellite experts and emission inventory specialists, the review identifies several targets that seem promising: large point sources of NOx and SO2, species that are difficult to measure by other means (NH3 and CH4, for example), area sources that cannot easily be quantified by traditional bottom-up methods (such as unconventional oil and gas extraction, shipping, biomass burning, and biogenic sources), and the temporal variation of emissions (seasonal, diurnal, episodic).
Journal ArticleDOI
A space-based, high-resolution view of notable changes in urban NOx pollution around the world (2005–2014)
Bryan N. Duncan,Lok N. Lamsal,Lok N. Lamsal,Anne M. Thompson,Yasuko Yoshida,Zifeng Lu,David G. Streets,M. M. Hurwitz,M. M. Hurwitz,Kenneth E. Pickering +9 more
TL;DR: In this paper, high-resolution NO2 data from the Ozone Monitoring Instrument (OMI) was used to analyze changes in urban NO2 levels around the world from 2005 to 2014, finding complex heterogeneity in the changes.
Journal ArticleDOI
Why do models overestimate surface ozone in the Southeast United States
Katherine R. Travis,Daniel J. Jacob,Jenny A. Fisher,Patrick S. Kim,Eloise A. Marais,Lei Zhu,Karen Yu,C. Chan Miller,Robert M. Yantosca,Melissa P. Sulprizio,Anne M. Thompson,Paul O. Wennberg,John D. Crounse,Jason M. St. Clair,Ronald C. Cohen,Joshua L. Laughner,Jack E. Dibb,Samuel R. Hall,Kirk Ullmann,Glenn M. Wolfe,Glenn M. Wolfe,I. B. Pollack,Jeff Peischl,Jeff Peischl,J. A. Neuman,J. A. Neuman,Xianliang Zhou,Xianliang Zhou +27 more
TL;DR: The authors used detailed chemical observations from the SEAC4RS aircraft campaign in August and September 2013, interpreted with the GEOS-Chem chemical transport model at 0.3125° horizontal resolution, to understand the factors controlling surface ozone in the Southeast US.
Journal ArticleDOI
The Ozone Monitoring Instrument: overview of 14 years in space
Pieternel F. Levelt,Joanna Joiner,Johanna Tamminen,J. Pepijn Veefkind,Pawan K. Bhartia,Deborah Stein Zweers,Bryan N. Duncan,David G. Streets,Henk Eskes,Ronald van der A,Chris A. McLinden,Vitali Fioletov,Simon Carn,Jos de Laat,Matthew T. DeLand,Sergey Marchenko,Richard D. McPeters,Jerald R. Ziemke,Jerald R. Ziemke,Dejian Fu,Xiong Liu,Kenneth E. Pickering,Arnoud Apituley,G. Gonzalez Abad,Antti Arola,Folkert Boersma,Folkert Boersma,C. Chan Miller,Kelly Chance,Martin de Graaf,Janne Hakkarainen,S. Hassinen,Iolanda Ialongo,Quintus Kleipool,Nickolay A. Krotkov,Can Li,Lok N. Lamsal,Paul A. Newman,Caroline R. Nowlan,Raid Suleiman,L. G. Tilstra,Omar Torres,Huiqun Wang,Krzysztof Wargan +43 more
TL;DR: The Ozone Monitoring Instrument (OMI) on board the Aura satellite spanning a period of nearly 14 years has been used in a wide range of applications and research resulting in many new findings as mentioned in this paper.
References
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TL;DR: In this article, the authors present a model for the chemistry of the Troposphere of the atmosphere and describe the properties of the Atmospheric Aqueous phase of single aerosol particles.
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TL;DR: SCIAMACHY (Scanning Imaging Absorption Spectrometer for Atmospheric Chartography) is a spectrometer designed to measure sunlight transmitted, reflected, and scattered by the earth's atmosphere or surface in the ultraviolet, visible, and near-infrared wavelength region (240-2380 nm) at moderate spectral resolution (0.2-1.5 nm, λ/Δλ ≈ 1000-10
Journal ArticleDOI
The ozone monitoring instrument
Pieternel F. Levelt,G. H. J. van den Oord,Marcel Dobber,A. Malkki,Hubregt J. Visser,Johan de Vries,Piet Stammes,J.O.V. Lundell,Heikki Saari +8 more
TL;DR: The Ozone Monitoring Instrument is a ultraviolet/visible nadir solar backscatter spectrometer, which provides nearly global coverage in one day with a spatial resolution of 13 km/spl times/24 km and will enable detection of air pollution on urban scale resolution.