Transport and build-up of tropospheric trace gases during the MINOS campaign: comparision of GOME, in situ aircraft measurements and MATCH-MPIC-data

Ladstätter-Weißenmayer, A.; Heland, J.; Kormann, R.; Kuhlmann, R. von; Lawrence, M. G.; Meyer-Arnek, Julian; Richter, Andreas; Wittrock, F.; Ziereis, H.; Burrows, J. P.

doi:10.5194/acp-3-1887-2003

Cited by 28 publications

(27 citation statements)

References 29 publications

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“…Why does the HCHO/NO 2 column ratio function effectively as an indicator of surface ozone‐NO x ‐VOC sensitivity? First, the bulk of the tropospheric NO 2 and HCHO columns over polluted regions is within the mixed layer [ Ladstätter‐Weißenmayer et al , 2003]. Second, the division between NO x ‐sensitive and NO x ‐saturated regimes generally follows a constant reactivity‐weighted VOC/NO x ratio [ Chameides et al , 1992], a ratio closely associated to the HCHO/NO 2 ratio.…”

Section: Evaluation Of the Hcho/no2 Column Ratio As An Ozone‐nox‐voc mentioning

confidence: 99%

Space‐based diagnosis of surface ozone sensitivity to anthropogenic emissions

Martin

Fiore

Donkelaar

2004

Geophysical Research Letters

212

157

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We present a novel capability in satellite remote sensing with implications for air pollution control strategy. We show that the ratio of formaldehyde columns to tropospheric nitrogen dioxide columns is an indicator of the relative sensitivity of surface ozone to emissions of nitrogen oxides (NOx ≡ NO + NO2) and volatile organic compounds (VOCs). The diagnosis from these space‐based observations is highly consistent with current understanding of surface ozone chemistry based on in situ observations. The satellite‐derived ratios indicate that surface ozone is more sensitive to emissions of NOx than of VOCs throughout most continental regions of the Northern Hemisphere during summer. Exceptions include Los Angeles and industrial areas of Germany. A seasonal transition occurs in the fall when surface ozone becomes less sensitive to NOx and more sensitive to VOCs.

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Section: Evaluation Of the Hcho/no2 Column Ratio As An Ozone‐nox‐voc mentioning

confidence: 99%

Space‐based diagnosis of surface ozone sensitivity to anthropogenic emissions

Martin

Fiore

Donkelaar

2004

Geophysical Research Letters

212

157

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“…Others have compared HCHO retrievals from SCIAMACHY with ground‐based UV/visible light and Fourier transform infrared measurements [ Wittrock et al , 2006; Vigouroux et al , 2009]. Earlier work by Ladstätter‐Weißenmayer et al [2003] and Martin et al [2004a] carried out comparisons between GOME‐1 HCHO and some of the limited aircraft measurements then available; both studies found agreement between satellite and in situ measurements within instrument uncertainty, including where Ω HCHO was near the detection limit (4.0 × 10 15 molecules cm −2 ) [ Chance et al , 2000].…”

Section: Introductionmentioning

confidence: 99%

Formaldehyde columns from the Ozone Monitoring Instrument: Urban versus background levels and evaluation using aircraft data and a global model

et al. 2011

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[1] We combine aircraft measurements (Second Texas Air Quality Study, Megacity Initiative: Local and Global Research Observations, Intercontinental Chemical Transport Experiment: Phase B) over the United States, Mexico, and the Pacific with a 3-D model (GEOS-Chem) to evaluate formaldehyde column (W HCHO ) retrievals from the Ozone Monitoring Instrument (OMI) and assess the information they provide on HCHO across local to regional scales and urban to background regimes. OMI W HCHO correlates well with columns derived from aircraft measurements and GEOS-Chem (R = 0.80). For the full data ensemble, OMI's mean bias is −3% relative to aircraft-derived W HCHO (−17% where W HCHO > 5 × 10 15 molecules cm −2 ) and −8% relative to GEOS-Chem, within expected uncertainty for the retrieval. Some negative bias is expected for the satellite and model, given the plume sampling of many flights and averaging over the satellite and model footprints. Major axis regression for OMI versus aircraft and model columns yields slopes (95% confidence intervals) of 0.80 (0.62-1.03) and 0.98 (0.73-1.35), respectively, with no significant intercept. Aircraft measurements indicate that the normalized vertical HCHO distribution, required by the satellite retrieval, is well captured by GEOS-Chem, except near Mexico City. Using measured HCHO profiles in the retrieval algorithm does not improve satellite-aircraft agreement, suggesting that use of a global model to specify shape factors does not substantially degrade retrievals over polluted areas. While the OMI measurements show that biogenic volatile organic compounds dominate intra-annual and regional W HCHO variability across the United States, smaller anthropogenic W HCHO gradients are detectable at finer spatial scales (∼20-200 km) near many urban areas. Citation: Boeke, N. L., et al. (2011), Formaldehyde columns from the Ozone Monitoring Instrument: Urban versus background levels and evaluation using aircraft data and a global model,

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“…The main maritime NO x sources are long‐range transport of continental emissions, lightning and ships. Recent studies have used satellite instruments such as GOME (Global Ozone Monitoring Experiment) to examine isolated NO 2 plume episodes over marine regions [ Ladstätter‐Weißenmayer et al , 2003; Stohl et al , 2003; Wenig et al , 2003]. In this study, we use GOME data from 1996–2000 and output from the Model of Atmospheric Transport and Chemistry‐Max Planck Institute for Chemistry version (MATCH‐MPIC) to document the presence of semiannual tropospheric NO 2 plumes over the central Indian Ocean (CIO) and to investigate their interannual and intraseasonal variability.…”

Section: Introductionmentioning

confidence: 99%

Semiannual NO₂ plumes during the monsoon transition periods over the central Indian Ocean

Kunhikrishnan¹,

Lawrence²,

Kuhlmann³

et al. 2004

Geophysical Research Letters

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[1] In this study we identify recurring plumes of tropospheric NO 2 originating from Africa and Indonesia during the monsoon transition periods over the central Indian Ocean (CIO, 5°N-30°S, 55°E-95°E), based on GOME satellite observations and global model (MATCH-MPIC) simulations. Despite the relatively short lifetime of NO x , these strong plumes can develop due to the pronounced anti-cyclonic circulation over the CIO, and the weak maritime convection, which limits vertical mixing. Model results indicate that the plumes are mainly transported in the middle troposphere (MT). Thus, the CIO in the Southern Hemisphere (SH) is not always as pristine as found in INDOEX during the winter monsoon.

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Transport and build-up of tropospheric trace gases during the MINOS campaign: comparision of GOME, in situ aircraft measurements and MATCH-MPIC-data

Cited by 28 publications

References 29 publications

Space‐based diagnosis of surface ozone sensitivity to anthropogenic emissions

Space‐based diagnosis of surface ozone sensitivity to anthropogenic emissions

Formaldehyde columns from the Ozone Monitoring Instrument: Urban versus background levels and evaluation using aircraft data and a global model

Semiannual NO₂ plumes during the monsoon transition periods over the central Indian Ocean

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Transport and build-up of tropospheric trace gases during the MINOS campaign: comparision of GOME, in situ aircraft measurements and MATCH-MPIC-data

Cited by 28 publications

References 29 publications

Space‐based diagnosis of surface ozone sensitivity to anthropogenic emissions

Space‐based diagnosis of surface ozone sensitivity to anthropogenic emissions

Formaldehyde columns from the Ozone Monitoring Instrument: Urban versus background levels and evaluation using aircraft data and a global model

Semiannual NO2 plumes during the monsoon transition periods over the central Indian Ocean

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Product

Resources

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Semiannual NO₂ plumes during the monsoon transition periods over the central Indian Ocean