Validation of Tropospheric Emission Spectrometer (TES) measurements of the total, stratospheric, and tropospheric column abundance of ozone

Osterman, G. B.; Kulawik, S. S.; Worden, H. M.; Richards, N. A. D.; Fisher, B.; Eldering, A.; Shephard, Mark W.; Froidevaux, L.; Labow, G. J.; Luo, Ming; Herman, R. L.; Bowman, K. W.; Thompson, A. M.

doi:10.1029/2007jd008801

Cited by 86 publications

(85 citation statements)

References 28 publications

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“…The importance of long-term, accurate O 3 profile records is well documented in climate reports (IPCC, 2007), O 3 assessment reports (WMO, 2011), and numerous studies of trends in tropospheric (Logan et al, 1994;Logan et al, 1999Logan et al, , 2012IPCC, 2007), stratospheric (Miller et al, 1995;Froidevaux et al, 1996;Liu et al, 2006;Rault and Taha, 2007;Jiang et al, 2007;Kroon et al, 2011) and total column O 3 (Thompson et al, 2003, Osterman et al, 2008. Furthermore, ozonesondes provide the highest vertical resolution (∼ 100 m) O 3 measurements from the surface to over 30 km.…”

Section: Importance Of Accurate O 3 Measurementsmentioning

confidence: 97%

Propagation of radiosonde pressure sensor errors to ozonesonde measurements

et al. 2014

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Abstract. Several previous studies highlight pressure (or equivalently, pressure altitude) discrepancies between the radiosonde pressure sensor and that derived from a GPS flown with the radiosonde. The offsets vary during the ascent both in absolute and percent pressure differences. To investigate this problem further, a total of 731 radiosonde/ozonesonde launches from the Southern Hemisphere subtropics to northern mid-latitudes are considered, with launches between 2005 and 2013 from both longer term and campaign-based intensive stations. Five series of radiosondes from two manufacturers (International Met Systems: iMet, iMet-P, iMet-S, and Vaisala: RS80-15N and RS92-SGP) are analyzed to determine the magnitude of the pressure offset. Additionally, electrochemical concentration cell (ECC) ozonesondes from three manufacturers (Science Pump Corporation; SPC and ENSCI/Droplet Measurement Technologies; DMT) are analyzed to quantify the effects these offsets have on the calculation of ECC ozone (O 3 ) mixing ratio profiles (O 3MR ) from the ozonesonde-measured partial pressure. Approximately half of all offsets are > ±0.6 hPa in the free troposphere, with nearly a third > ±1.0 hPa at 26 km, where the 1.0 hPa error represents ∼ 5 % of the total atmospheric pressure. Pressure offsets have negligible effects on O 3MR below 20 km (96 % of launches lie within ±5 % O 3MR error at 20 km). Ozone mixing ratio errors above 10 hPa (∼ 30 km), can approach greater than ±10 % (> 25 % of launches that reach 30 km exceed this threshold). These errors cause disagreement between the integrated ozonesonde-only column O 3 from the GPS and radiosonde pressure profile by an average of +6.5 DU. Comparisons of total column O 3 between the GPS and radiosonde pressure profiles yield average differences of +1.1 DU when the O 3 is integrated to burst with addition of the McPeters and Labow (2012) above-burst O 3 column climatology. Total column differences are reduced to an average of −0.5 DU when the O 3 profile is integrated to 10 hPa with subsequent addition of the O 3 climatology above 10 hPa. The RS92 radiosondes are superior in performance compared to other radiosondes, with average 26 km errors of −0.12 hPa or +0.61 % O 3MR error. iMet-P radiosondes had average 26 km errors of −1.95 hPa or +8.75 % O 3MR error. Based on our analysis, we suggest that ozonesondes always be coupled with a GPS-enabled radiosonde and that pressure-dependent variables, such as O 3MR , be recalculated/reprocessed using the GPS-measured altitude, especially when 26 km pressure offsets exceed ±1.0 hPa/±5 %.

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Section: Importance Of Accurate O 3 Measurementsmentioning

confidence: 97%

Propagation of radiosonde pressure sensor errors to ozonesonde measurements

et al. 2014

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“…We use TES level 2, version 4 global survey nadir observations (http: //eosweb.larc.nasa.gov/), and only O 3 and CO retrievals with the "Master" quality flag are used in this analysis. The retrievals of O 3 have 1-1.5 degrees of freedom (DOF) in the profile at midlatitudes in summer, with peak sensitivities near 700 and 300-400 hPa, respectively (Parrington et al, 2008). TES CO profiles generally have 1-1.5 DOF in the troposphere (Luo et al, 2007a, b).…”

Section: Tes O 3 and Comentioning

confidence: 99%

Global O<sub>3</sub>–CO correlations in a chemistry and transport model during July–August: evaluation with TES satellite observations and sensitivity to input meteorological data and emissions

et al. 2017

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Abstract. We examine the capability of the Global Modeling Initiative (GMI) chemistry and transport model to reproduce global mid-tropospheric (618 hPa) ozone-carbon monoxide (O 3 -CO) correlations determined by the measurements from the Tropospheric Emission Spectrometer (TES) aboard NASA's Aura satellite during boreal summer (JulyAugust). The model is driven by three meteorological data sets (finite-volume General Circulation Model (fvGCM) with sea surface temperature for 1995, Goddard Earth Observing System Data Assimilation System Version 4 (GEOS-4 DAS) for 2005, and Modern-Era Retrospective Analysis for Research and Applications (MERRA) for 2005), allowing us to examine the sensitivity of model O 3 -CO correlations to input meteorological data. Model simulations of radionuclide tracers ( 222 Rn, 210 Pb, and 7 Be) are used to illustrate the differences in transport-related processes among the meteorological data sets. Simulated O 3 values are evaluated with climatological profiles from ozonesonde measurements and satellite tropospheric O 3 columns. Despite the fact that the three simulations show significantly different global and regional distributions of O 3 and CO concentrations, they show similar patterns of O 3 -CO correlations on a global scale. All model simulations sampled along the TES orbit track capture the observed positive O 3 -CO correlations in the Northern Hemisphere midlatitude continental outflow and the Southern Hemisphere subtropics. While all simulations show strong negative correlations over the Tibetan Plateau, northern Africa, the subtropical eastern North Pacific, and the Caribbean, TES O 3 and CO concentrations at 618 hPa only show weak negative correlations over much narrower areas (i.e., the Tibetan Plateau and northern Africa). Discrepancies in regional O 3 -CO correlation patterns in the three simulations may be attributed to differences in convective transport, stratospheric influence, and subsidence, among other processes. To understand how various emissions drive global O 3 -CO correlation patterns, we examine the sensitivity of GMI/MERRA model-calculated O 3 and CO concentrations and their correlations to emission types (fossil fuel, biomass burning, biogenic, and lightning NO x emissions). Fossil fuel and biomass burning emissions are mainly responsible forPublished by Copernicus Publications on behalf of the European Geosciences Union. 8430H.-D. Choi et al.: Global O 3 -CO correlations in a chemistry and transport model the strong positive O 3 -CO correlations over continental outflow regions in both hemispheres. Biogenic emissions have a relatively smaller impact on O 3 -CO correlations than other emissions but are largely responsible for the negative correlations over the tropical eastern Pacific, reflecting the fact that O 3 is consumed and CO generated during the atmospheric oxidation process of isoprene under low-NO x conditions. We find that lightning NO x emissions degrade both positive correlations at mid-and high latitudes and negative correlations in the tropics ...

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“…The data used in this study comes from the TES Global Survey operating mode in which TES makes nadir observations with a 5.3 × 8.3 km footprint, providing near-global coverage approximately every 16 days. TES ozone and CO profiles are provided on 67 vertical levels from the surface to 0.1 hPa and have been extensively validated against in-situ observations Nassar et al, 2008;Osterman et al, 2008;Richards et al, 2008;Lopez et al, 2008). In order to correctly compare TES and model profiles one must account for the limited vertical resolution and the effects of a priori information inherent in the retrieved TES profiles.…”

Section: Observational Datamentioning

confidence: 99%

Representation of tropical deep convection in atmospheric models – Part 2: Tracer transport

et al. 2011

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Abstract. The tropical transport processes of 14 different models or model versions were compared, within the framework of the SCOUT-O3 (Stratospheric-Climate Links with Emphasis on the Upper Troposphere and Lower Stratosphere) project. The tested models range from the regional to the global scale, and include numerical weather prediction (NWP), chemical transport, and chemistry-climate models. Idealised tracers were used in order to prevent the model's chemistry schemes from influencing the results substantially, so that the effects of modelled transport could be isolated. We find large differences in the vertical transport of very short-lived tracers (with a lifetime of 6 h) within the tropical troposphere. Peak convective outflow altitudes rangeCorrespondence to: C. R. Hoyle (christopher.hoyle@env.ethz.ch) from around 300 hPa to almost 100 hPa among the different models, and the upper tropospheric tracer mixing ratios differ by up to an order of magnitude. The timing of convective events is found to be different between the models, even among those which source their forcing data from the same NWP model (ECMWF). The differences are less pronounced for longer lived tracers, however they could have implications for modelling the halogen burden of the lowermost stratosphere through transport of species such as bromoform, or short-lived hydrocarbons into the lowermost stratosphere. The modelled tracer profiles are strongly influenced by the convective transport parameterisations, and different boundary layer mixing parameterisations also have a large impact on the modelled tracer profiles. Preferential locations for rapid transport from the surface into the upper troposphere are similar in all models, and are mostly concentrated over the western Pacific, the Maritime Continent and the Indian Published by Copernicus Publications on behalf of the European Geosciences Union. Ocean. In contrast, models do not indicate that upward transport is highest over western Africa.

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Validation of Tropospheric Emission Spectrometer (TES) measurements of the total, stratospheric, and tropospheric column abundance of ozone

Cited by 86 publications

References 28 publications

Propagation of radiosonde pressure sensor errors to ozonesonde measurements

Propagation of radiosonde pressure sensor errors to ozonesonde measurements

Global O<sub>3</sub>–CO correlations in a chemistry and transport model during July–August: evaluation with TES satellite observations and sensitivity to input meteorological data and emissions

Representation of tropical deep convection in atmospheric models – Part 2: Tracer transport

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Validation of Tropospheric Emission Spectrometer (TES) measurements of the total, stratospheric, and tropospheric column abundance of ozone

Cited by 86 publications

References 28 publications

Propagation of radiosonde pressure sensor errors to ozonesonde measurements

Propagation of radiosonde pressure sensor errors to ozonesonde measurements

Global O&lt;sub&gt;3&lt;/sub&gt;–CO correlations in a chemistry and transport model during July–August: evaluation with TES satellite observations and sensitivity to input meteorological data and emissions

Representation of tropical deep convection in atmospheric models – Part 2: Tracer transport

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Global O<sub>3</sub>–CO correlations in a chemistry and transport model during July–August: evaluation with TES satellite observations and sensitivity to input meteorological data and emissions