Comparison of tropospheric NO2 from in situ aircraft measurements with near-real-time and standard product data from OMI

[1] We present an analysis of in situ NO2 measurements from aircraft experiments between summer 2004 and spring 2006. The data are from the INTEX-A, PAVE, and INTEX-B campaigns and constitute the most comprehensive set of tropospheric NO2 profiles to date. Profile shapes from INTEX-A and PAVE are found to be qualitatively similar to annual mean profiles from the GEOS-Chem model. Using profiles from the INTEX-B campaign, we perform error-weighted linear regressions to compare the Ozone Monitoring Instrument (OMI) tropospheric NO2 columns from the near-real-time product (NRT) and standard product (SP) with the integrated in situ columns. Results indicate that the OMI SP algorithm yields NO2 amounts lower than the in situ columns by a factor of 0.86 (±0.2) and that NO2 amounts from the NRT algorithm are higher than the in situ data by a factor of 1.68 (±0.6). The correlation between the satellite and in situ data is good (r = 0.83) for both algorithms. Using averaging kernels, the influence of the algorithm's a priori profiles on the satellite retrieval is explored. Results imply that air mass factors from the a priori profiles are on average slightly larger (∼10%) than those from the measured profiles, but the differences are not significant.

[1]  R. Cohen,et al.  Laser-induced fluorescence detection of atmospheric NO2 with a commercial diode laser and a supersonic expansion. , 2002, Applied optics.

[2]  William H. Press,et al.  Numerical recipes in C. The art of scientific computing , 1987 .

[3]  Jay R. Herman,et al.  Earth surface reflectivity climatology at 340–380 nm from TOMS data , 1997 .

[4]  James F. Gleason,et al.  Validation of OMI tropospheric NO2 column densities using direct‐Sun mode Brewer measurements at NASA Goddard Space Flight Center , 2008 .

[5]  K. F. Boersma,et al.  Validation of OMI tropospheric NO2 observations during INTEX-B and application to constrain NOx emissions over the eastern United States and Mexico , 2008 .

[6]  Michael Eisinger,et al.  Refinement of a Database of Spectral Surface Reflectivity in the Range 335-772 nm Derived from 5.5 Years of GOME Observations , 2003 .

[7]  Thornton,et al.  Atmospheric NO2: in situ laser-induced fluorescence detection at parts per trillion mixing ratios , 2000, Analytical chemistry.

[8]  J. Veefkind,et al.  Validation of Ozone Monitoring Instrument nitrogen dioxide columns , 2008 .

[9]  R. Hirsch,et al.  METHODS OF FITTING A STRAIGHT LINE TO DATA: EXAMPLES IN WATER RESOURCES , 1984 .

[10]  Piet Stammes,et al.  Cloud pressure retrieval using the O2‐O2 absorption band at 477 nm , 2004 .

[11]  D. Jacob,et al.  Global modeling of tropospheric chemistry with assimilated meteorology : Model description and evaluation , 2001 .

[12]  Aaron L. Swanson,et al.  Evaluation of space‐based constraints on global nitrogen oxide emissions with regional aircraft measurements over and downwind of eastern North America , 2006 .

[13]  K. F. Boersma,et al.  Near-real time retrieval of tropospheric NO 2 from OMI , 2006 .

[14]  Thomas P. Kurosu,et al.  Global inventory of nitrogen oxide emissions constrained by space‐based observations of NO2 columns , 2003 .

[15]  Johannes W. Kaiser,et al.  Comparison of GOME tropospheric NO 2 columns with NO 2 profiles deduced from ground-based in situ measurements , 2006 .

[16]  Paul Ginoux,et al.  Interpretation of TOMS observations of tropical tropospheric ozone with a global model and in-situ observations , 2002 .

[17]  Georgiy L. Stenchikov,et al.  Lightning-generated NOX and its impact on tropospheric ozone production: A three-dimensional modeling study of a Stratosphere- Troposphere Experiment: Radiation, Aerosols and Ozone (STERAO-A) thunderstorm , 2005 .

[18]  D. Fahey,et al.  Reactive nitrogen and its correlation with ozone in the lower stratosphere and upper troposphere , 1993 .

[19]  James F. Gleason,et al.  An improved retrieval of tropospheric nitrogen dioxide from GOME , 2002 .

[20]  P. Crutzen.  The influence of nitrogen oxides on the atmospheric ozone content , 1970 .

[21]  W. Chameides,et al.  A photochemical theory of tropospheric ozone , 1973 .

[22]  B. Ridley,et al.  On the production of active nitrogen by thunderstorms over , 1996 .

[23]  James F. Gleason,et al.  Algorithm for NO/sub 2/ vertical column retrieval from the ozone monitoring instrument , 2006, IEEE Transactions on Geoscience and Remote Sensing.

[24]  J. Seinfeld,et al.  Atmospheric Chemistry and Physics: From Air Pollution to Climate Change , 1998 .

[25]  W. Press,et al.  Numerical recipes in C. The art of scientific computing , 1987 .

[26]  D. Fahey,et al.  Ozone production in the rural troposphere and the implications for regional and global ozone distributions , 1987 .

[27]  William H. Press,et al.  The Art of Scientific Computing Second Edition , 1998 .

[28]  R. Martin,et al.  Multi-model ensemble simulations of tropospheric NO2 compared with GOME retrievals for the year 2000 , 2006 .

[29]  Henk Eskes,et al.  Averaging kernels for DOAS total-column satellite retrievals , 2003 .

[30]  John P. Burrows,et al.  First comparison of tropospheric NO2 column densities retrieved from GOME measurements and in situ aircraft profile measurements , 2002 .

[31]  R. Dickerson,et al.  Model calculations of tropospheric ozone production potential following observed convective events , 1990 .

[32]  Henk Eskes,et al.  Error analysis for tropospheric NO2 retrieval from space , 2004 .

[33]  Henk Eskes,et al.  Estimates of lightning NO x production from GOME satellite observations , 2005 .

[34]  S. Ghan,et al.  Tropospheric nitrogen: A three‐dimensional study of sources, distributions, and deposition , 1991 .

[35]  Henk Eskes,et al.  Intercomparison of SCIAMACHY and OMI Tropospheric NO2 Columns: Observing the Diurnal Evolution of Chemistry and Emissions from Space , 2008 .

[36]  J. Thornton,et al.  Comparisons of in situ and long path measurements of NO2 in urban plumes , 2003 .

[37]  Pawan K. Bhartia,et al.  Science objectives of the ozone monitoring instrument , 2006, IEEE Transactions on Geoscience and Remote Sensing.

[38]  John P. Burrows,et al.  Validation of SCIAMACHY tropospheric NO2-columns with AMAXDOAS measurements , 2004 .

[39]  Robert J. D. Spurr,et al.  Air-mass factor formulation for spectroscopic measurements from satellites: application to formaldeh , 2001 .