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
More filters
Journal ArticleDOI
Improvements to the retrieval of tropospheric NO 2 from satellite – stratospheric correction using SCIAMACHY limb/nadir matching and comparison to Oslo CTM2 simulations
Andreas Hilboll,Andreas Richter,A. Rozanov,Øivind Hodnebrog,A. Heckel,A. Heckel,Sverre Solberg,Frode Stordal,John P. Burrows +8 more
TL;DR: In this paper, a novel approach to limb/nadir matching is presented, calculating one stratospheric NO2 value from limb measurements for every single nadir measurement, abandoning global coverage for the sake of spatial accuracy.
Journal ArticleDOI
Glyoxal observations in the global marine boundary layer
Anoop S. Mahajan,Anoop S. Mahajan,C. Prados-Roman,T. D. Hay,T. D. Hay,Johannes Lampel,Denis Pöhler,Katja Groβmann,Jens Tschritter,Udo Frieß,Ulrich Platt,Paul Johnston,Karin Kreher,Folkard Wittrock,John P. Burrows,John M. C. Plane,Alfonso Saiz-Lopez +16 more
TL;DR: The results reported in this paper support previous suggestions that the currently known sources of glyoxal are insufficient to explain the average MBL concentrations, which suggests that there is an additional missing source, more than a magnitude larger than currently known source, which is necessary to account for the observed atmospheric levels of glyoxide.
Journal ArticleDOI
OMI air-quality monitoring over the Middle East
M. P. Barkley,G. Gonzalez Abad,Thomas P. Kurosu,Robert Spurr,Sara Torbatian,Christophe Lerot +5 more
TL;DR: In this paper, the authors conducted a robust and detailed time series analysis to assess changes in local air quality for over 1000 locations (focussing on urban, oil refinery, oil port, and power plant targets) over the Middle East for 2005-2014.
Journal ArticleDOI
Five decades observing Earth's atmospheric trace gases using ultraviolet and visible backscatter solar radiation from space
G. Gonzalez Abad,Amir Hossein Souri,Juseon Bak,Kelly Chance,Lawrence E. Flynn,Nickolay A. Krotkov,Lok N. Lamsal,Can Li,Can Li,Xiong Liu,C. Chan Miller,Caroline R. Nowlan,Raid Suleiman,Huiqun Wang +13 more
TL;DR: A review of algorithms developed for ozone, nitrogen dioxide, sulfur dioxide, formaldehyde, bromine monoxide, water vapor and glyoxal, a selection of studies using these algorithms, the challenges they face and how these challenges can be addressed can be found in this article.
Journal ArticleDOI
Unexpected long-range transport of glyoxal and formaldehyde observed from the Copernicus Sentinel-5 Precursor satellite during the 2018 Canadian wildfires
Leonardo M. A. Alvarado,Andreas Richter,Mihalis Vrekoussis,Mihalis Vrekoussis,Andreas Hilboll,Anna B. Kalisz Hedegaard,Anna B. Kalisz Hedegaard,Oliver Schneising,John P. Burrows +8 more
TL;DR: In this article, the authors used a simple approach to test their assumption that CHOCHO and HCHO are created by oxidation of longer-lived precursors, which were also released by the fire and present in the plume.
References
More filters
Journal ArticleDOI
The HITRAN 2008 molecular spectroscopic database
Laurence S. Rothman,Iouli E. Gordon,Yurii L. Babikov,A. Barbe,D. Chris Benner,Peter F. Bernath,Manfred Birk,Luca Bizzocchi,Vincent Boudon,Linda R. Brown,Alain Campargue,Kelly Chance,Edward A. Cohen,L. H. Coudert,V. M. Devi,Brian J. Drouin,André Fayt,Jean-Marie Flaud,Robert R. Gamache,Jeremy J. Harrison,Jean-Michel Hartmann,Christian Hill,Joseph T. Hodges,D. Jacquemart,Antoine Jolly,Julien Lamouroux,R. J. Le Roy,Gang Li,David A. Long,O.M. Lyulin,C.J. Mackie,Steven T. Massie,Semen Mikhailenko,Holger S. P. Müller,Olga V. Naumenko,Andrei Nikitin,Johannes Orphal,V.I. Perevalov,Agnes Perrin,E. R. Polovtseva,Charlotte Richard,Mary Ann H. Smith,Evgeniya Starikova,Keeyoon Sung,S.A. Tashkun,Jonathan Tennyson,Geoff Toon,Vl.G. Tyuterev,G. Wagner +48 more
TL;DR: The new HITRAN is greatly extended in terms of accuracy, spectral coverage, additional absorption phenomena, added line-shape formalisms, and validity, and molecules, isotopologues, and perturbing gases have been added that address the issues of atmospheres beyond the Earth.
Book
Inverse Methods for Atmospheric Sounding: Theory and Practice
TL;DR: This book treats the inverse problem of remote sounding comprehensively, and discusses a wide range of retrieval methods for extracting atmospheric parameters of interest from the quantities such as thermal emission that can be measured remotely.
Journal ArticleDOI
Emission of trace gases and aerosols from biomass burning
Meinrat O. Andreae,P. Merlet +1 more
TL;DR: In this article, the authors present a set of emission factors for a large variety of species emitted from biomass fires, where data were not available, they have proposed estimates based on appropriate extrapolation techniques.
Journal ArticleDOI
Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (1997-2009)
G. R. van der Werf,James T. Randerson,Louis Giglio,Louis Giglio,G. J. Collatz,Mingquan Mu,Prasad S. Kasibhatla,Douglas C. Morton,Ruth DeFries,Yufang Jin,T. T. van Leeuwen +10 more
TL;DR: In this paper, the authors used a revised version of the Carnegie-Ames-Stanford-Approach (CASA) biogeochemical model and improved satellite-derived estimates of area burned, fire activity, and plant productivity to calculate fire emissions for the 1997-2009 period on a 0.5° spatial resolution with a monthly time step.
Journal ArticleDOI
Absorption spectrum (380–700 nm) of pure water. II. Integrating cavity measurements
Robin M. Pope,Edward S. Fry +1 more
TL;DR: Definitive data on the absorption spectrum of pure water from 380 to 700 nm have been obtained with an integrating cavity technique and several spectroscopic features have been identified in the visible spectrum to the knowledge for the first time.