Comparisons of Tropospheric Emission Spectrometer (TES) ozone profiles to ozonesondes: Methods and initial results

Worden, H. M.; Logan, Jennifer A.; Worden, J.; Beer, R.; Bowman, K. W.; Clough, S. A.; Eldering, A.; Fisher, B.; Gunson, M. R.; Herman, R. L.; Kulawik, S. S.; Lampel, M.; Luo, M.; Megretskaia, I. A.; Osterman, G. B.; Shephard, Mark W.

doi:10.1029/2006jd007258

Cited by 206 publications

(222 citation statements)

References 33 publications

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“…Each retrieved TES profile has a unique averaging kernel which must be applied to the comparison profile. The application of the TES operator to a comparison profile is described in more detail by Worden et al [2007]. In order to apply TES averaging kernels to the DIAL and FASTOZ profiles, the TES a priori was used to extend each profile to the highest TES pressure level (0.1 mbar).…”

Section: Comparison Strategymentioning

confidence: 99%

“…To date, TES tropospheric ozone validation has been conducted through comparisons with ozonesondes [Worden et al, 2007;Nassar et al, 2008], which are able to make in situ observations from the surface to the stratosphere. Although ozonesondes are able to provide a measurement set which has a large geographical extent, the frequency of ozonesonde launches is quite low, and they are rarely timed to be coincident with satellite overpasses.…”

Section: Introductionmentioning

confidence: 99%

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Validation of Tropospheric Emission Spectrometer ozone profiles with aircraft observations during the Intercontinental Chemical Transport Experiment–B

et al. 2008

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The Tropospheric Emission Spectrometer (TES) is an infrared instrument that was launched on board NASA's Aura satellite in 2004. TES is the first instrument to provide vertical information on tropospheric ozone while simultaneously measuring CO on a global basis. Before they may be used for scientific study, TES profiles must first be validated to determine if there are any systematic biases present. In this study we present a validation of TES tropospheric ozone using airborne differential absorption lidar (DIAL) profiles obtained during the Intercontinental Chemical Transport Experiment–B (INTEX‐B) campaign, which took place during March–May 2006. During INTEX‐B the NASA DC‐8 aircraft conducted several flights, which allowed the DIAL instrument to obtain ozone profile measurements that were spatially coincident with TES special observations in three different geographical regions. Here we present comparisons of TES and DIAL tropospheric ozone profiles that show that, on average, TES exhibits a small positive bias in the troposphere of 5–15%. We also examine the use of in situ profile observations for the validation of TES tropospheric ozone, and we find these to be of most use in clean regions where the background ozone field is homogeneous.

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Section: Comparison Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Validation of Tropospheric Emission Spectrometer ozone profiles with aircraft observations during the Intercontinental Chemical Transport Experiment–B

et al. 2008

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“…On average, TES O 3 shows a positive bias of w6 ppbv (15%) throughout the troposphere in comparison with ozonesonde data (Nassar et al, 2008; Worden et al, 2007). Richards et al (2008) compared TES O 3 data with airborne in situ measurements during INTEX-B and found a positive bias of w2-6 ppbv (5-15%) in the troposphere.…”

Section: Tes Datamentioning

confidence: 99%

“…By contrast, O 3 and CO averaging kernels away from the Mexico City Basin (w23.3 N, w850 hPa; location ''b'' in Fig. 2) show largest sensitivities to 600-800 hPa, typical for the middle and low troposphere under clear sky (e.g., Jones et al, 2003;Luo et al, 2007a;Richards et al, 2008;Worden et al, 2007;Zhang et al, 2006).…”

Section: Tes Datamentioning

confidence: 99%

“…The validation of TES data with in situ measurements requires applying TES averaging kernels to in situ profiles to take into account the relatively coarse TES vertical resolution and a priori information (Rodgers and Connor, 2003;Worden et al, 2007). On average, TES O 3 shows a positive bias of w6 ppbv (15%) throughout the troposphere in comparison with ozonesonde data (Nassar et al, 2008; Worden et al, 2007).…”

Section: Tes Datamentioning

confidence: 99%

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Satellite observations of Mexico City pollution outflow from the Tropospheric Emissions Spectrometer (TES)

Shim

Luo

et al. 2009

Atmospheric Environment

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a b s t r a c tConcurrent tropospheric O 3 and CO vertical profiles from the Tropospheric Emission Spectrometer (TES) during the MILAGRO/INTEX-B aircraft campaigns over the Mexico City Metropolitan Area (MCMA) and its surrounding regions were used to examine Mexico City pollution outflow on a regional scale. The pollution outflow from the MCMA occurred predominantly at 600-800 hPa as evident in O 3 , CO, and NO x enhancements in the in situ aircraft observations. TES O 3 and CO are sensitive to the MCMA pollution outflow due to their relatively high sensitivities at 600-800 hPa. We examined O 3 , CO, and their correlation at 600-800 hPa from TES retrievals, aircraft measurements, and GEOS-Chem model results. TES captures much of the spatial and day-to-day variability of O 3 seen in the in situ data. TES CO, however, shows much less spatial and day-to-day variability compared with the in situ observations. The DO 3 /DCO slope is significantly higher in the TES data (0.43) than the in situ data (0.28) due partly to the lack of variability in TES CO. Extraordinarily high DO 3 /DCO slope (0.81) from TES observations at 618 hPa over the Eastern U.S. was previously reported

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The SPARC Data Initiative: Comparison of upper troposphere/lower stratosphere ozone climatologies from limb‐viewing instruments and the nadir‐viewing Tropospheric Emission Spectrometer

et al. 2014

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We present the first comprehensive intercomparison of currently available satellite ozone climatologies in the upper troposphere/lower stratosphere (UTLS) (300-70 hPa) as part of the Stratosphere-troposphere Processes and their Role in Climate (SPARC) Data Initiative. The Tropospheric Emission Spectrometer (TES) instrument is the only nadir-viewing instrument in this initiative, as well as the only instrument with a focus on tropospheric composition. We apply the TES observational operator to ozone climatologies from the more highly vertically resolved limb-viewing instruments. This minimizes the impact of differences in vertical resolution among the instruments and allows identification of systematic differences in the large-scale structure and variability of UTLS ozone. We find that the climatologies from most of the limb-viewing instruments show positive differences (ranging from 5 to 75%) with respect to TES in the tropical UTLS, and comparison to a "zonal mean" ozonesonde climatology indicates that these differences likely represent a positive bias for p ≤ 100 hPa. In the extratropics, there is good agreement among the climatologies regarding the timing and magnitude of the ozone seasonal cycle (differences in the peak-to-peak amplitude of <15%) when the TES observational operator is applied, as well as very consistent midlatitude interannual variability. The discrepancies in ozone temporal variability are larger in the tropics, with differences between the data sets of up to 55% in the seasonal cycle amplitude. However, the differences among the climatologies are everywhere much smaller than the range produced by current chemistry-climate models, indicating that the multiple-instrument ensemble is useful for quantitatively evaluating these models.

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Comparisons of Tropospheric Emission Spectrometer (TES) ozone profiles to ozonesondes: Methods and initial results

Cited by 206 publications

References 33 publications

Validation of Tropospheric Emission Spectrometer ozone profiles with aircraft observations during the Intercontinental Chemical Transport Experiment–B

Validation of Tropospheric Emission Spectrometer ozone profiles with aircraft observations during the Intercontinental Chemical Transport Experiment–B

Satellite observations of Mexico City pollution outflow from the Tropospheric Emissions Spectrometer (TES)

The SPARC Data Initiative: Comparison of upper troposphere/lower stratosphere ozone climatologies from limb‐viewing instruments and the nadir‐viewing Tropospheric Emission Spectrometer

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