The use of NO&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; absorption cross section temperature   sensitivity to derive NO&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; profile temperature and   stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

Spinei, E.; Cede, Alexander; Swartz, W. H.; Herman, J. R.; Mount, G. H.

doi:10.5194/amt-7-4299-2014

Cited by 20 publications

(24 citation statements)

References 50 publications

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“…Strahan et al (2016) demonstrated realistic seasonal and interannual variability of Arctic composition using comparisons to Aura Microwave Limb Sounder (MLS) O 3 and N 2 O. We have found GMI's NO 2 simulation in both the troposphere and stratosphere (Spinei et al, 2014;Marchenko et al, 2015) to be in good agreement with observations.…”

Section: Gmi Modelsupporting

confidence: 71%

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The version 3 OMI NO<sub>2</sub> standard product

et al. 2017

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Abstract. We describe the new version 3.0 NASA Ozone Monitoring Instrument (OMI) standard nitrogen dioxide (NO 2 ) products (SPv3). The products and documentation are publicly available from the NASA Goddard Earth Sciences Data and Information Services Center (https://disc. gsfc.nasa.gov/datasets/OMNO2_V003/summary/). The major improvements include (1) a new spectral fitting algorithm for NO 2 slant column density (SCD) retrieval and (2) higherresolution (1 • latitude and 1.25 • longitude) a priori NO 2 and temperature profiles from the Global Modeling Initiative (GMI) chemistry-transport model with yearly varying emissions to calculate air mass factors (AMFs) required to convert SCDs into vertical column densities (VCDs). The new SCDs are systematically lower (by ∼ 10-40 %) than previous, version 2, estimates. Most of this reduction in SCDs is propagated into stratospheric VCDs. Tropospheric NO 2 VCDs are also reduced over polluted areas, especially over western Europe, the eastern US, and eastern China. Initial evaluation over unpolluted areas shows that the new SPv3 products agree better with independent satellite-and ground-based Fourier transform infrared (FTIR) measurements. However, further evaluation of tropospheric VCDs is needed over polluted areas, where the increased spatial resolution and more refined AMF estimates may lead to better characterization of pollution hot spots.

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Section: Gmi Modelsupporting

confidence: 71%

“…A new generation of spectroscopic ground-based instruments can measure total (Herman et al, 2009) and tropospheric (Hönninger et al, 2004;Spinei et al, 2014) NO 2 columns at high temporal resolution. The first space-based NO 2 observations started 3134 N. A.…”

Section: Introductionmentioning

confidence: 99%

The version 3 OMI NO<sub>2</sub> standard product

et al. 2017

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“…In the stratosphere, NO 2 exhibits significant diurnal variation, with monotonic increase in NO 2 column from~3.0×10 15 molecules cm À2 at 6 A.M. tõ 4.5×10 15 molecules cm À2 at 6 P.M., an increase of 50%. The GMI-simulated diurnal variation of stratospheric NO 2 has been previously evaluated with ground-based multi-function DOAS measurements and reported to agree within 6% [Spinei et al, 2014]. The observed diurnal variation of tropospheric NO 2 is the result of diurnal changes in NO x emissions, PBL mixing, and chemistry.…”

Section: Gmi Simulationmentioning

confidence: 90%

High‐resolution NO₂ observations from the Airborne Compact Atmospheric Mapper: Retrieval and validation

et al. 2017

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Nitrogen dioxide (NO2) is a short‐lived atmospheric pollutant that serves as an air quality indicator and is itself a health concern. The Airborne Compact Atmospheric Mapper (ACAM) was flown on board the NASA UC‐12 aircraft during the Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality Maryland field campaign in July 2011. The instrument collected hyperspectral remote sensing measurements in the 304–910 nm range, allowing daytime observations of several tropospheric pollutants, including nitrogen dioxide (NO2), at an unprecedented spatial resolution of 1.5 × 1.1 km2. Retrievals of slant column abundance are based on the differential optical absorption spectroscopy method. For the air mass factor computations needed to convert these retrievals to vertical column abundance, we include high‐resolution information for the surface reflectivity by using bidirectional reflectance distribution function data from the Moderate Resolution Imaging Spectroradiometer. We use high‐resolution simulated vertical distributions of NO2 from the Community Multiscale Air Quality and Global Modeling Initiative models to account for the temporal variation in atmospheric NO2 to retrieve middle and lower tropospheric NO2 columns (NO2 below the aircraft). We compare NO2 derived from ACAM measurements with in situ observations from NASA's P‐3B research aircraft, total column observations from the ground‐based Pandora spectrometers, and tropospheric column observations from the space‐based Ozone Monitoring Instrument. The high‐resolution ACAM measurements not only give new insights into our understanding of atmospheric composition and chemistry through observation of subsampling variability in typical satellite and model resolutions, but they also provide opportunities for testing algorithm improvements for forthcoming geostationary air quality missions.

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“…In the following, we use effective O 3 cross sections calculated for specific temperatures. This concept was already applied for the retrieval of the total O 3 VCD from satellite measurements of GOME (Hoogen et al, 1999), OMI (Veefkind et al, 2006), and SCIAMACHY (Eskes et al, 2005) as well as for separating stratospheric and tropospheric NO 2 in ground-based direct Sun measurements (Spinei et al, 2014). The calculation of an O 3 cross section for an effective temperature (referred to as effective O 3 cross section (σ e ) in the following) is outlined below.…”

Section: Methods 1: Use Of External Data Sets Of Stratospheric Omentioning

confidence: 99%

Vertical Profiles of Tropospheric Ozone From MAX‐DOAS Measurements During the CINDI‐2 Campaign: Part 1—Development of a New Retrieval Algorithm

et al. 2018

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Ground‐based measurements of tropospheric ozone (O3) are valuable for studies of atmospheric chemistry, air pollution, climate change, and for satellite validation. The Multi Axis Differential Optical Absorption Spectroscopy (MAX‐DOAS) technique has been widely used to derive vertical profiles of trace gases and aerosols in the troposphere. However, tropospheric O3 has not yet been satisfactorily derived from MAX‐DOAS measurements due to the influence of stratospheric O3 absorption. In this study, we developed two new retrieval approaches for tropospheric O3 from MAX‐DOAS measurements. In method 1, stratospheric O3 profiles from external data sources are considered in the retrieval. In method 2, stratospheric and tropospheric O3 are separated based on the temperature‐dependent differences between tropospheric and stratospheric O3 absorption structures in the UV spectral range. The feasibility of both methods is first verified by applying them to synthetic spectra. Then they are applied to real MAX‐DOAS measurements recorded during the CINDI‐2 campaign in Cabauw, the Netherlands (September 2016). The obtained results are compared with independent O3 measurements and global chemical transport model simulations. Good agreement of the near‐surface O3 concentrations with the independent data sets is found for both methods. However, tropospheric O3 profiles are only reasonably derived using method 1, while they are significantly overestimated at altitudes above 1 km using method 2, probably due to the approximation of the ring spectra used to correct the rotational Raman scattering structures in the DOAS fit. Advantages and disadvantages of both methods are discussed and improvement directions are suggested for further studies.

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The use of NO<sub>2</sub> absorption cross section temperature sensitivity to derive NO<sub>2</sub> profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

Cited by 20 publications

References 50 publications

The version 3 OMI NO<sub>2</sub> standard product

The version 3 OMI NO<sub>2</sub> standard product

High‐resolution NO₂ observations from the Airborne Compact Atmospheric Mapper: Retrieval and validation

Vertical Profiles of Tropospheric Ozone From MAX‐DOAS Measurements During the CINDI‐2 Campaign: Part 1—Development of a New Retrieval Algorithm

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The use of NO&lt;sub&gt;2&lt;/sub&gt; absorption cross section temperature sensitivity to derive NO&lt;sub&gt;2&lt;/sub&gt; profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

Cited by 20 publications

References 50 publications

The version 3 OMI NO&lt;sub&gt;2&lt;/sub&gt; standard product

The version 3 OMI NO&lt;sub&gt;2&lt;/sub&gt; standard product

High‐resolution NO2 observations from the Airborne Compact Atmospheric Mapper: Retrieval and validation

Vertical Profiles of Tropospheric Ozone From MAX‐DOAS Measurements During the CINDI‐2 Campaign: Part 1—Development of a New Retrieval Algorithm

Contact Info

Product

Resources

About

The use of NO<sub>2</sub> absorption cross section temperature sensitivity to derive NO<sub>2</sub> profile temperature and stratospheric–tropospheric column partitioning from visible direct-sun DOAS measurements

The version 3 OMI NO<sub>2</sub> standard product

The version 3 OMI NO<sub>2</sub> standard product

High‐resolution NO₂ observations from the Airborne Compact Atmospheric Mapper: Retrieval and validation