Publications

The following papers provide fundamental model descriptions of products from RT Solutions:

Spurr, R.J.D., T.P. Kurosu, and K.V. Chance, A Linearized Discrete Ordinate Radiative Transfer Model for Atmospheric Remote Sensing Retrieval, J. Quant. Spectrosc. Radiat. Transfer, 68, 689-735, 2001.

Spurr, R.J.D., Simultaneous radiative transfer derivation of intensities and weighting functions in a general pseudo-spherical treatment, J. Quant. Spectrosc. Radiat. Transfer, 75, 129-175, 2002.

LIDORT V2PLUS: a comprehensive radiative transfer package for UV/VIS/NIR nadir remote sensing; a General Quasi Analytic Solution, Proc. S.P.I.E. Volume 5235, Remote Sensing of Clouds & the Atmosphere VIII, Barcelona, Spain, 2003.

Spurr, R.J.D., A New Approach to the Retrieval of Surface Properties from Earthshine Measurements, J. Quant. Spectrosc. Radiat. Transfer, 83, 15-46, 2004.

Spurr, R. J. D., VLIDORT: A linearized pseudo-spherical vector discrete ordinate radiative transfer code for forward model and retrieval studies in multilayer multiple scattering media, J. Quant. Spectrosc. Radiat. Transfer, 102(2), 316-342, doi:10.1016/j/jqsrt.2006.05.005, 2006.

Natraj, V., and R. J. D. Spurr, A Fast Linearized Pseudo-Spherical Two Orders of Scattering Model to Account for Polarization in Vertically Inhomogeneous Scattering-Absorbing Media, J. Quant. Spectrosc. Radiat. Transfer, 107, 263-293, 2007.

Spurr, R.J.D., J. de Haan, R. van Oss, and A. Vasilkov, Discrete Ordinate Theory in a Stratified Medium with First Order Rotational Raman Scattering; a General Quasi-Analytic Solution, J. Quant. Spectrosc. Radiat. Transfer, 109, 404-425, doi: 10.1016/j.jqsrt.2007.08.011, 2008.

Spurr, R., LIDORT and VLIDORT: Linearized pseudo-spherical scalar and vector discrete ordinate radiative transfer models for use in remote sensing retrieval problems. Light Scattering Reviews, Volume 3, ed. A. Kokhanovsky, Springer, 2008.

Spurr, R., and V. Natraj, A linearized two-stream radiative transfer code for fast approximation of multiple-scatter fields, J. Quant. Spectrosc. Radiat. Transfer, 112, 2630-2637, 2011.

Spurr, R. J. D., and M. Christi. The LIDORT and VLIDORT Linearized Scalar and Vector Discrete Ordinate Radiative Transfer Models: An Update for the last 10 Years. Light Scattering Reviews, Volume 12, ed. A. Kokhanovsky, Springer, 2019.

Spurr, R., V. Natraj, S. F. Colosimo, J. Stutz, M. Christi and S. Korkin. VLIDORT-QS: A quasi-spherical vector radiative transfer model, J. Quant. Spectrosc. Radiat. Transfer, 291, 108341, https://doi.org/10.1016/j.jqsrt.2022.108341, 2022.

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The reference for the linearized Mie and T-matrix packages is:

Spurr, R., J. Wang, J. Zeng, and M. Mishchenko, Linearized T-Matrix and Mie scattering computations, J. Quant. Spectrosc. Radiat. Transfer, 113, 425-439, 2012.

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RT Solutions products have been sent out to hundreds of people worldwide on five continents. The following papers (listed chronologically) deal with some of the applications:

Chance, K.V., P.I. Palmer, R.J.D. Spurr, R.V. Martin, T.P. Kurosu and D.J. Jacob, Satellite observations of formaldehyde over North America from GOME, Geophys. Res. Lett., 27, 3461-3464, 2000.

Palmer, P.I., D.J. Jacob, K.V. Chance, R.V. Martin, R.J.D. Spurr, T.P. Kurosu, I. Bey, R. Yantosca, A. Fiore and Q. Li, Air-mass factor formulation for spectroscopic measurements from satellites: application to formaldehyde retrievals from GOME, J. Geophys. Res., 106, 14539-14550, 2001.

Van Oss, R.F, R.H.M. Voors and R.J.D. Spurr, Ozone Profile Algorithm, OMI Algorithm Theoretical Basis Document, Volume II, OMI Ozone products (P.K. Bhartia ed.), ATBD-OMI-02, Version 1.0, September 2001.

Martin, R.V., K.V. Chance, D.J. Jacob, T.P. Kurosu, R.J.D. Spurr, E. Bucsela, J.F. Gleason, P.I. Palmer, I. Bey, A. Fiore, Q. Li, R. Yantosca and R.B.A. Koelemeijer, An improved retrieval of tropospheric nitrogen dioxide from GOME, J. Geophys. Res., 107, doi: 10.1029/2001JD001027, 2002.

Van Oss, R.F, and R.J.D. Spurr, Fast and accurate 4-stream linearized discrete ordinate radiative transfer models for ozone profile retrieval, J. Quant. Spectrosc. Radiat. Transfer, 75, 177-220, 2002.

Martin, S.T., H.M. Hung, R.J. Park, D.J. Jacob, R.J.D. Spurr, K.V. Chance and M. Chin, Effects of the Physical State of Tropospheric Ammonium-Sulfate-Nitrate on Global Aerosol Direct Radiative Forcing, Atm. Chem. Phys. 4, 183-214, 2004.

Spurr, R., K. Stamnes, H. Eide, W. Li, and J. Stamnes, Analytic Jacobians for ocean color retrieval: linearization of the coupled atmosphere-ocean discrete ordinate model, Proc. S.P.I.E. Volume 5636, SPIE International Asia-Pacific Symposium, Remote Sensing of the Atmosphere, Environment, and Space, Hawai'i USA, November 2004.

Liu, X., K. Chance, C. E. Sioris, R. J. D. Spurr, T. P. Kurosu, R. V. Martin, and M. J. Newchurch, Ozone Profile and Tropospheric Ozone Retrievals from the Global Ozone Monitoring Experiment: Algorithm Description and Validation, J. Geophys. Res., 110, D20307, doi:10.10.29/2005JD006240, 2005.

Spurr, R., D. Loyola, W. Thomas, W. Balzer, E. Mikusch, B. Aberle, S. Slijkhuis, T. Ruppert, M. Van Roozendael, J.-C. Lambert, and T. V. Soebijanta, GOME Level 1-to-2 Data Processor Version 3.0: A Major Upgrade of the GOME/ERS-2 Total Ozone Retrieval Algorithm, Applied Optics, 44, 7196-7209, 2005.

Balis, D., J-C. Lambert, M. van Roozendael, R. Spurr, D. Loyola, Y. Livschitz, P. Valks, V. Amiridis, P. Gerard, J. Granville, and C. Zehner, Ten years of GOME/ERS2 total ozone data: the new GOME Data Processor (GDP) Version 4: II. Ground-based validation and comparisons with TOMS V7/V8, J. Geophys Res., doi: 10.1029/2005JD006375, 2006.

Guo, X., V. Natraj, D. R. Feldman, R. J. D. Spurr, R.-L. Shia, S. P. Sander, and Y. L. Yung, Retrieval of ozone profile from ground-based measurements with polarization: A synthetic study, J. Quant. Spectrosc. Radiat. Transfer, doi: 10.1016/j/jqsrt.2006.05.008, 2006.

Liu, X., K. Chance, C. E. Sioris, T. P. Kurosu, R. J. D. Spurr, R. V. Martin, T. M. Fu, J. A. Logan, D. J. Jacob, P. I. Palmer, M. J. Newchurch, I. A. Megretskaia, and R. Chatfield, First directly retrieved global distribution of tropospheric column ozone from GOME: Comparison with the GEOS-CHEM model, J. Geophys. Res., 111, D2, D02308, 10.1029/2005JD006564, 2006.

Spurr, R., K. Stamnes, H. Eide, W. Li, K. Zhang, and J. Stamnes, Simultaneous Retrieval of Aerosols and Ocean Properties: A Classic Inverse Modeling Approach. I. Analytic Jacobians from the Linearized CAO-DISORT Model, J. Quant. Spectrosc. Radiat. Transfer, doi: 10.1016/j/jqsrt.2006.09.009, 2006.

Van Roozendael, M., D. Loyola, R. Spurr, D. Balis, J-C. Lambert, Y. Livschitz, P. Valks, T. Ruppert, P. Kenter, C. Fayt, and C. Zehner, Ten years of GOME/ERS2 total ozone data: the new GOME Data Processor (GDP) Version 4: I. Algorithm Description, J. Geophys Res., doi: 10.1029/2005JD006375, 2006.

Li, W., K. Stamnes, H. Eide, and R. Spurr, Bidirectional Reflectance Distribution Function (BRDF) of snow: correction for the Lambertian assumption in Remote Sensing Applications, Opt. Eng., 46(6), 1-9, 2007.

Natraj, V., R. Spurr, H. Boesch, Y. Jiang, and Y.Yung, Evaluation of Errors from Neglecting Polarization in the Forward Modeling of O2 A Band Measurements from Space, with Relevance to CO2 Column Retrieval from Polarization-Sensitive Instruments, J. Quant. Spectrosc. Radiat. Transfer, 103, 245-259, 2007.

Spurr, R. J. D., and M. J. Christi, Linearization of the Interaction Principle: Analytic Jacobians in the Radiant Model, J. Quant. Spectrosc. Radiat. Transfer, 103/3 pp 431-446, doi 10.1016/j.jqsrt.2006.05.001, 2007.

Zhang, K., W. Li, K. Stamnes, H. Eide, R. Spurr and S.-C. Tsay, Assessment of the Moderate Resolution Spectroradiometer algorithm for the retrieval of aerosol parameters over the ocean, Applied Optics, 46, 1525-1534, 2007.

Drury, E., D. Jacob, J. Wang, R. Spurr, and K. Chance, Improved algorithm for MODIS satellite retrievals of aerosol optical depths over western North America. Journal of Geophysical Research, 113:D16204, doi:10.1029/2007JD009573, 2008.

Li, W., R. Spurr, K. Stamnes, and J. Stamnes, Simultaneous retrieval of aerosol and ocean properties by optimal estimation: SeaWiFS case studies for the Santa Barbara Channel, International Journal of Remote Sensing, 29:19, 5689-5698, 2008.

Natraj, V., H. Boesch, R. Spurr, and Y. Yung, Retrieval of XCO2 from Simulated Orbiting Carbon Observatory Measurements using the Fast Linearized R-2OS Radiative Transfer Model. J. Geophys. Res., 113, D11212, doi:10.1029/2007JD009017, 2008.

Ottaviani, M., R. Spurr, K. Stamnes, W. Li, W. Su, and W. Wiscombe, Improving the description of sunglint for accurate prediction of remotely-sensed radiances, J. Quant. Spectrosc. Radiat. Transfer, 109, 2364-2375, 2008.

Vasilkov, A., J. Joiner, R. Spurr, P. K. Bhartia, P. Levelt, and G. Stephens, Evaluation of the OMI Cloud Pressures Derived from Rotational Raman Scattering by Comparisons with Other Satellite Data and Radiative Transfer Simulations, J. Geophys. Res., 113, D15S19, doi:10.1029/2007JD008689, 2008.

Lerot, C., M. van Roozendael, J. van Geffen, J. van Gent, C. Fayt, R. Spurr, G. Lichtenberg, and A. von Bargen, Six years of total ozone column measurements from SCIAMACHY nadir observations, Atmos. Meas. Tech., 2, 87-98, 2009.

Loyola, D., T. Erbertseder, P. Valks, M. Van Roozendael, J-C. Lambert, C. Lerot, D. Balis, and R. Spurr, Operational Monitoring of the Antarctic Ozone Hole: Transition from GOME and SCIAMACHY to GOME-2, in "Twenty Years of Ozone Decline", C. Zerefos (Ed), Springer Publication, October, 2009.

Vasilkov, A. P., J. Joiner, L. Oreopoulos, J. F. Gleason, P. Veefkind, E. Bucsela, E. A. Celarier, R. J. D. Spurr, and S. Platnick, Impact of tropospheric nitrogen dioxide on the regional radiation budget, Atmos. Chem. Phys. 9, 6389-6400, 2009.

Clemer, K., M. Van Roozendael, C. Fayt, F. Hendrick, C. Hermans, G. Pinardi, R. Spurr, P. Wang, and M. De Maziere, Multiple wavelength retrieval of tropospheric aerosol optical properties from MAXDOAS measurements in Beijing, Atmos. Meas. Tech., 3, 863-878, 2010.

Drury, E., D. J. Jacob, R. J. D. Spurr, J. Wang, Y. Shinozuka, B. E. Anderson, A. D. Clarke, J. Dibb, C. McNaughton, and R. Weber, Synthesis of satellite (MODIS), aircraft (ICARTT), and surface (IMPROVE, EPA-AQS, AERONET) aerosol observations over North America to improve MODIS aerosol retrievals and constrain surface aerosol concentration and sources, J. Geophys. Res., D14204, 2010.

Lerot, C., M. van Roozendael, J.-C. Lambert, J. Granville, J. van Gent, D. Loyola, and R. Spurr, The GODFIT algorithm: a direct fitting approach to improve the accuracy of total ozone measurements from GOME, Quadrennial Ozone Symposium 2008 proceedings, Int. J. Rem. Sens., 31, 543-550, doi: 10.1080/01431160902893576, 2010.

Liu, X., Bhartia, P. K., Chance, K., Spurr, R. J. D., and Kurosu, T. P.: Ozone profile retrievals from the Ozone Monitoring Instrument, Atmos. Chem. Phys., 10, 2521-2537, 2010.

Liu, X., Bhartia, P. K., Chance, K., Froidevaux, L., Spurr, R. J. D., and Kurosu, T. P.: Validation of Ozone Monitoring Instrument (OMI) ozone profiles and stratospheric ozone columns with Microwave Limb Sounder (MLS) measurements, Atmos. Chem. Phys., 10, 2539-2549, 2010.

Loyola R. D. G., W. Thomas, R. Spurr, and B. Mayer, Global Patterns in Daytime Cloud Properties as derived from GOME Backscatter UV-VIS Measurements, International Journal of Remote Sensing, 31, Issue 16, 4295-4318, 2010.

Vasilkov, A. P., Joiner, J., Haffner, D., Bhartia, P. K., and Spurr, R. J. D.: What do satellite backscatter ultraviolet and visible spectrometers see over snow and ice? A study of clouds and ozone using the A-train, Atmos. Meas. Tech., 3, 619-629, 2010.

Wang, J., X. Xu, R. Spurr, Y. Wang, and E. Drury, Improved algorithm for MODIS satellite retrievals of aerosol optical thickness over land in dusty atmosphere: Implications for air quality monitoring in China, Remote Sensing of Environment, 114, 2575-2583, 2010.

Yang, K., X. Liu, P. K. Bhartia, N. A. Krotkov, S. A. Carn, E. J. Hughes, A. J. Krueger, R. J. D. Spurr, and S. G. Trahan, Direct retrieval of sulfur dioxide amount and altitude from spaceborne hyperspectral UV measurements: Theory and application, J. Geophys. Res., 115, D00L09, doi:10.1029/2010JD013982, 2010.

Zhou, Y., D. Brunner, R. Spurr, K. Boersma, M. Sneep, C. Popp, and B. Buchmann, Accounting for surface reflectance anisotropy in satellite retrievals of tropospheric NO2, Atmos. Meas. Tech, 3, 1185-1203, 2010.

Loyola, D. G., M. E. Koukouli, P. Valks, D. S. Balis, N. Hao, M. Van Roozendael, R. J. D. Spurr, W. Zimmer, S. Kiemle, C. Lerot, J-C. Lambert, The GOME-2 Total Column Ozone Product: Retrieval Algorithm and Ground-Based Validation, Journal of Geophysical Research, 116, D07302, doi:10.1029/2010JD014675, 2011.

Natraj, V., X. Liu, S. Kulawik, K. Chance, R. Chatfield, D. P. Edwards, A. Eldering, E. Francis, T. Kurosu, K. Pickering, R. Spurr, H. Worden , Multispectral sensitivity studies for the retrieval of tropospheric and lowermost tropospheric ozone from simulated clear sky GEO-CAPE measurements, Atmospheric Environment, 45, 7151-7165, 2011.

Bak J, J. H. Kim, R. J. D. Spurr, X. Liu, and M. J. Newchurch, Sensitivity analysis of ozone retrievals from ultraviolet measurements on geostationary platforms, Remote Sens. Environ., 118, 309-319, 2012.

Henze, D., D. Shindell, F. Akhtar, R. Spurr, R. Pinder, D. Loughlin, M. Kopacz, K. Singh, C. Shim, Spatially refined aerosol direct radiative forcing efficiencies, Nature Climate Change, in press, 2012.

Joiner, J., A. Vasilkov, P. Gupta, P. Bhartia, P. Veefkind, M. Sneep, J. de Haan, I. Polonsky and R. Spurr, Fast simulators for satellite cloud optical centroid pressure retrievals; evaluation of OMI cloud retrievals, Atmos. Meas. Tech., 5, 529-545, 2012.

M. E. Koukouli, D. S. Balis, D. Loyola, P. Valks, W. Zimmer, N. Hao,J-C. Lambert, M. Van Roozendael, C. Lerot, and R. J. D. Spurr, Geophysical validation and long-term consistency between GOME-2/MetOp-A total ozone column and measurements from the sensors GOME/ERS-2, SCIAMACHY/ENVISAT and OMI/Aura. Atmos. Meas. Tech., 5, 2169-2181, 2012.

Van Roozendael, M., R. Spurr, D. Loyola, C. Lerot, D. Balis, J-C. Lambert, W. Zimmer, J. van Gent, J. van Geffen, M. Koukouli, J. Granville, A. Doicu, C. Fayt, C. Zehner, Sixteen years of GOME/ERS2 total ozone data: the new direct-fitting GOME Data Processor (GDP) Version 5: I. Algorithm Description, J. Geophys. Res., 117, D03305, doi: 10.1029/2011JD016471, 2012.

Cuesta, J., Eremenko, M., Liu, X., Dufour, G., Cai, Z., H pfner, M., von Clarmann, T., Sellitto, P., Foret, G., Gaubert, B., Beekmann, M., Orphal, J., Chance, K., Spurr, R., and Flaud, J.-M.: Satellite observation of lowermost tropospheric ozone by multispectral synergism of IASI thermal infrared and GOME-2 ultraviolet measurements, Atmos. Chem. Phys. Discuss., 13, 2955-2995, doi:10.5194/acpd-13-2955-2013, 2013.

Spurr, R., V. Natraj, C. Lerot, M. Van Roozendael, and D. Loyola, Linearization of the Principal Component Analysis Method for Radiative Transfer Acceleration: Application to Retrieval Algorithms and Sensitivity Studies, J. Quant. Spectrosc. Radiat. Transfer, 125, 1-17, 2013.

Van Donkelaar, A., R. V. Martin, R. J. D. Spurr, E. Drury, L. A. Remer, R. C. Levy, and J. Wang, Optimal Estimation for Global Ground-Level Fine Particulate Matter Concentrations, J. Geophys. Res., 118, 5621-5636, 2013.

Vasilkov, A., J. Joiner, and R. Spurr, Note on rotational-Raman scattering in the O2 A- and B-bands. Atmos. Meas. Tech., 6, 981-990, 2013.

Chiou E. W., P. K. Bhartia, R. D. McPeters, D. G. Loyola, M. Coldewey-Egbers, V. E. Fioletov, M. Van Roozendael, C. Lerot, R. Spurr, and S. M. Frith. Comparison of profile total ozone from SBUV(v8.6) with GOME-type and ground-based total ozone for 16-yr period (1996 to 2011), Atmos. Meas. Tech., 7, 1681-92, 2014.

Efremenko, D.S., D. G. Loyola, A. Doicu, and R. J.D. Spurr, Multi-core-CPU and GPU-accelerated radiative transfer models based on the discrete ordinate method. Computer Physics Communications, 185(12), 3079-3089, 2014.

Efremenko D. S., D. G. Loyola, R. Spurr and A. Doicu, Acceleration of Radiative Transfer Model Calculations for the Retrieval of Trace Gases under Cloudy Conditions. J. Quant. Spectrosc. Radiat. Transfer., 135, 58-65, 2014.

Hache, E., J-L. Attie, C. Tourneur, P. Ricaud, L. Coret, W.A. Lahoz, L. El Amraoui, B. Josse, P. Hamer, J. Warner, X. Liu, K. Chance, M. Hoepfner, R. Spurr, V. Natraj, S. Kulawik, A. Eldering, and J. Orphal. The added value of a visible channel to a geostationary thermal infrared instrument to monitor ozone for air quality. Atmos. Meas. Tech., 7, 2185 2201, 2014.

Hao, N., M. E. Koukouli, A. Inness, P. Valks, D. G. Loyola, W. Zimmer, D. S. Balis, I. Zyrichidou, M. Van Roozendael, C. Lerot, and R. J. D. Spurr, GOME-2 total ozone columns from MetOp-A/MetOp-B and assimilation in the MACC system. Atmos. Meas. Tech., 7, 2937-2951, 2014.

Lerot C., M. Van Roozendael, R. Spurr, D. Loyola, M. Coldewey-Egbers, S. Kochenova, J. van Gent, M. Koukouli, D. Balis, J.-C. Lambert, J. Granville, and C. Zehner. Homogenized total ozone data records from the European sensors GOME/ERS-2, SCIAMACHY/Envisat, and GOME-2/MetOp-A, J. Geophys Res., 118, 1 20, doi:10.1002/2013JD020831, 2014.

Lin J., R. V. Martin, K. F. Boersma, M. Sneep, P. Stammes, R. Spurr, P. Wang, M. Van Roozendael, K. Clemer, H. Irie, Retrieving tropospheric nitrogen dioxide over China from the Ozone Monitoring Instrument: Effects of aerosols, surface reflectance anisotropy and vertical profile of nitrogen dioxide, Atmos. Chem. Phys., 14, 1441-1461, 2014.

Schuessler, O., D. Loyola, A. Doicu, and R. Spurr, Information Content in the Oxygen A-band for the Retrieval of Macrophysical Cloud Parameters, IEEE Transactions on Geoscience and Remote Sensing, 52(6), 3246-3255. doi: 10.1109/TGRS.2013.2271986, 2014.

Spurr, R., and M. Christi, On the generation of atmospheric property Jacobians from the (V)LIDORT linearized radiative transfer models, J. Quant. Spectrosc. Radiat. Transfer., doi: 10.1016/j.jqsrt.2014.03.011, 2014.

Wang, J. , X. Xu, S. Ding, J. Zeng, R. Spurr, X. Liu, K. Chance, and M. Mishchenko, A numerical testbed for remote sensing of aerosols, and its demonstration for evaluating retrieval synergy from a geostationary satellite constellation of GEO-CAPE and GOES-R, J. Quant. Spectrosc. Radiat. Transfer., 146, 510-528, 2014.

Buchard, V., A. da Silva, P. Colarco, A. Darmenov, C. Randles, R. Govindaraju, O. Torres, J. Campbell, and R. Spurr, Using the OMI Aerosol Index and Absorption Aerosol Optical Depth to Evaluate the NASA MERRA Aerosol Reanalysis, Atmos. Chem. Phys. 15, 5743-5760, 2015.

Coldewey-Egbers, M., D. G. Loyola, M. Koukouli, D. Balis, J.-C. Lambert, T. Verhoelst, J. Granville, M. van Roozendael, C. Lerot, R. Spurr, S. M. Frith, and C. Zehner, The GOME-type Total Ozone Essential Climate Variable (GTO-ECV) data record from the ESA Climate Change Initiative, Atmos. Meas. Tech., 8, 1 18, 2015.

Hewson, W., M. P. Barkley, G. Gonzalez Abad, H. Boesch, T. Kurosu, R. Spurr, and L. Tilstra, Development and characterisation of a state-of-the-art GOME-2 formaldehyde air-mass factor algorithm, Atmos. Meas. Tech., 8, 4055-4074, 2015.

Koukouli, M., C. Lerot, J. Granville, F. Goutail, J-C. Lambert, J-P. Pommereau, D. Balis, I. Zyrichidou, M. Van Roozendael, M. Coldewey-Egbers, D. Loyola, G. Labow, S. Firth, R. Spurr, and C. Zehner. Evaluating a new homogeneous total ozone climate data record from GOME/ERS-2, SCIAMACHY/Envisat and GOME-2/MetOp-A. J. Geophys. Res., 120, doi:10.1002/2015JD023699, 2015.

Lin, J.-T., M.-Y. Liu, J.-Y. Xin, K. F. Boersma, M. Sneep, R. Spurr, R. Martin, Q. Zhang, Influence of aerosols and surface reflectance on satellite NO2 retrieval: Seasonal and spatial characteristics and implications for NOx emission constraints, Atmos. Chem. Phys., 15, 11217-11241, 2015.

Van Donkelaar, A., R. Martin, R. Spurr, and R. Burnett, High-resolution satellite-derived PM2.5 from optimal estimation and geographically weighted regression over North America, Environ. Sci. and Tech., doi 10.1021/acs.est.5b02076, 2015.

Xu X., J. Wang, J. Zeng, R. Spurr, X. Liu, O. Dubovik, L. Li, Z. Li, M. Mishchenko, A. Siniuk and B. Holben, Retrieval of aerosol microphysical properties from AERONET photo-polarimetric measurements. 2: A new research algorithm and case demonstration, J. Geophys. Res. Atmos., 120, doi:10.1002/2015JD023113, 2015.

Hammer, M. S, R. V. Martin, A. van Donkelaar, V. Buchard, O. Torres, C. L. Heald, D. A. Ridley, R. J. D. Spurr, Interpreting the Ultraviolet Aerosol Index Observed with the OMI Satellite Instrument to Understand Absorption by Organic Aerosols with Implications for Atmospheric Oxidation and Direct Radiative Effects, Atmos. Chem. Phys.,16, 2507-2523, 2016.

Jeong, U., J. Kim, C. Ahn, O. Torres, X. Liu, P. K. Bhartia, R. J. D. Spurr, D. Haffner, K. Chance, and B. Holben, An optimal-estimation-based aerosol retrieval algorithm using OMI near-UV observations, Atmos. Chem. Phys., 16, 177-193, 2016.

Jethva, H., O. Torres, L. Remer, J. Redemann, S. E. Dunagan, J. Livingston, Y. Shinozuka, M, Kacenelenbogen, M. Segal-Rosenheimer, R. Spurr, Validating Above-cloud Aerosol Optical Depth Retrieved from MODIS-based Color Ratio Algorithm using NASA s Airborne AATS and 4STAR Direct Measurements, Atmos. Meas. Tech., 9, 5053-62, 2016.

Kopparla, P., V. Natraj, R. Spurr, R.-L. Shia, Y. Yung, and D. Crisp. A Fast and Accurate PCA Based Radiative Transfer Model: Extension to the Broadband Shortwave Region, J. Quant. Spectrosc. Radiat. Transfer, 173, 65 71, doi:10.1016/j.jqsrt. 2016.01.014, 2016.

R. Spurr, V. Natraj, P. Kopparla, and M. Christi, Application of Principal Component Analysis (PCA) to Performance Enhancement of Hyperspectral Radiative Transfer Computations, in Principal Component Analysis: Methods, Applications and Technology, NOVA publishers, 2016.

Barkley, M. P., Gonzalez Abad, G., Kurosu, T. P., Spurr, R., Torbatian, S., and Lerot, C.: OMI air-quality monitoring over the Middle East, Atmos. Chem. Phys., 17, 4687-4709, doi:10.5194/acp-17-4687-2017, 2017.

Efremenko, D. S., D. G. Loyola R., P. Hedelt, and R. J. D. Spurr, Volcanic SO 2 plume height retrieval from UV sensors using a full-physics inverse learning machine algorithm, Int. J. Remote Sensing, 38:sup1, 1-27, DOI:10.1080/01431161.2017.1348644, 2017.

Huang, H, W. Qin, R. Spurr and Q. Liu, Evaluation of Atmospheric Effects on Land Surface Directional Reflectance with the Coupled RAPID and VLIDORT Models. Geoscience and Remote Sensing Letters, 14, 916-920, 2017.

Kopparla, P., V. Natraj, D. Limpasuvan, R. Spurr, R.-L. Shia, D. Crisp, Y. L. Yung. PCA Based Radiative Transfer: Improvements to Aerosol Handling and Binning Optimization, J. Quant. Spectrosc. Radiat. Transfer, 198, 104-111, 2017.

Lamsal, L. N., S. Janz, N. A. Krotkov, K. E. Pickering, R. Spurr, M. Kowalewski 1, C. Loughner, J. Crawford, W. Swartz, and J.. Herman. High-resolution NO2 observations from the Airborne Compact Atmospheric Mapper: Retrieval and validation, J. Geophys. Res., doi 10.1002/2016JD025483, 122, 1953-70, 2017.

Li, C., N. A. Krotkov, S. Carn3, Y. Zhang, R. J. D. Spurr, J. Joiner. New generation NASA Aura Ozone Monitoring Instrument volcanic SO2 dataset: Algorithm description, initial results, and continuation with the Suomi-NPP Ozone Mapping and Profiler Suite., Atmos. Meas. Tech., 10, 445-458, doi:10.5194/amt-10-445-2017, 2017.

Loyola, D. G., S. G. Garcia, R. Lutz, A. Argyrouli, F, Romahn, R. J. D. Spurr, M. Pedergnani, A. Doicu, V. M. Garcia, O. Schuessler. The operational cloud retrieval algorithms from TROPOMI on board Sentinel-5 Precursor, Atmos. Meas. Tech., 10, 1-18, https://doi.org/10.5194/amt-10-1-2017, 2017.

Vasilkov, A., W. Qin, N. Krotkov, L. Lamsal, R. Spurr, D. Haffner, J. Joiner, E.-S. Yang, and S. Marchenko. Accounting for the effects of surface BRDF on satellite cloud and trace-gas retrievals: A new approach based on geometry-dependent Lambertian-equivalent reflectivity applied to OMI algorithms, Atmos. Meas. Tech, 133, 333, 2017.

X. Chen, Dongxu Yang, Z. Cai, Y. Liu, and R. Spurr, Aerosol retrieval sensitivity and error analysis for the Cloud and Aerosol Polarimetric Imager on board TanSat: the effect of multi-angle measurement, Remote Sens., 9(2), 183; doi:10.3390/rs9020183, 2017.

Zoogman, P., X. Liu, R.M. Suleiman, W.F. Pennington, D.E. Flittner, J.A. Al-Saadi, B.B. Hilton, D.K. Nicks, M.J. Newchurch, J.L. Carr, S.J. Janz, M.R. Andraschko, A. Arola, B.D. Baker, B.P. Canova, C. Chan Miller, R.C. Cohen, J.E. Davis, M.E. Dussault, D.P. Edwards, J. Fishman, A. Ghulam, G. Gonzalez Abad, M. Grutter, J.R. Herman, J. Houck, D.J. Jacob, J. Joiner, B.J. Kerridge, J. Kim, N.A. Krotkov, L. Lamsal, C. Li, A. Lindfors, R.V. Martin, C.T. McElroy, C. McLinden, V. Natraj, D.O. Neil, C.R. Nowlan, E.J. O'Sullivan, P.I. Palmer, R.B. Pierce, M.R. Pippin, A. Saiz-Lopez, R.J.D. Spurr, J.J. Szykman, O. Torres, J.P. Veefkind, B. Veihelmann, H. Wang, J. Wang, K. Chance, Tropospheric Emissions: Monitoring of Pollution (TEMPO), J. Quant. Spectrosc. Radiat. Transfer, 186, 17-39, 2017.

Vasilkov, A., E.-S. Yang, S. Marchenko, W. Qin, L. Lamsal, J. Joiner, N. Krotkov, D. Haffner, P. K. Bhartia, and R. Spurr. A cloud algorithm based on the O 2-O2 477nm absorption band featuring an advanced spectral fitting method and the use of surface geometry-dependent Lambertian-equivalent reflectivity, Atmos. Meas. Tech., 11, 4093-4107, 2018.

Qin. W., Z. Fasnacht, D. Haffner, A. Vasilkov, J. Joiner, N. Krotkov, B. Fisher, and R. Spurr. A geometry-dependent surface Lambertian-equivalent reflectivity product at 466nm for UV/Vis retrievals: Part I. Evaluation over land surfaces using measurements from OMI, Atmos. Meas. Tech., 12, 3997-4017, 2019.

Hedelt, P., D. Efremenko, D. G. Loyola R., R. Spurr and L. Clarisse, SO2 Layer Height retrieval from Sentinel-5 Precursor/TROPOMI using FP_ILM, Atmos. Meas. Tech., 12, 5503-5517, 2019.

Chance, K., X. Liu, C. Chan Miller, G. Gonzalez Abad, G. Huang, C. Nowlan, A. Souri, R. Suleiman, K. Sun, H. Wang, L. Zhu, P. Zoogman, J. Al-Saadi, J-C. Antuna-Marrero, J. Carr, R. Chatfield, M. Chin, R. Cohen, D. Edwards, J. Fishman, D. Flittner, J. Geddes, M. Grutter, J.R. Herman, D.J. Jacob, S. Janz, J. Joiner, J. Kim, N.A. Krotkov, B. Lefer, R.V. Martin, O.L. Mayol-Bracero, A. Naeger, M. Newchurch, G.G. Pfister, K. Pickering, R.B. Pierce, C. Rivera Cadenas, A. Saiz-Lopez, W. Simpson, E. Spinei, R.J D. Spurr, J.J. Szykman, O. Torres, and J. Wang, TEMPO Green Paper: Chemistry, physics, and meteorology experiments with the Tropospheric Emissions: monitoring of pollution instrument. Proc. SPIE 11151, Sensors, Systems, and Next-Generation Satellites XXIII, 111510B, 2019. https://doi.org/10.1117/12.2534883, 2019.

Liu, X., J. Bak, C. Nowlan, C. Chan Miller, G. Gonzalez Abad, K. Yang, R. Spurr, G. Huang, K. Sun, and K. Chance. Improve the accuracy, long-term consistency, and speed of the SAO OMI ozone profile product. Earth and Space Science Open Archive (ESSOAr), 2019.

Fasnacht, Z., A. Vasilkov, D. Haffner, W. Qin, J, Joiner, N, Krotkov, A. Sayer, and R. Spurr, A geometry-dependent surface Lambertian-equivalent reflectivity product for UV/Vis retrievals: Part 2: Evaluation over open ocean, Atmos. Meas. Tech., 12, 6749-6769, 2019.

Wang, J., M. Zhou. X. Xu. S. Roudini, S. Sander, T. Pongetti, S. Miller, T. Stone, J. Reid, E. Hyer, and R. Spurr, Development of nighttime shortwave radiative transfer model for remote sensing of aerosols and fires from VIIRS, Remote Sens. Env., 241,111727, 2020.

Korkin, S., E.-S. Yang, R. Spurr, C. Emde, N. Krotkov, A. Vasilkov, D. Haffner, J. Mok, and A. Lyapustine. Revised and extended benchmark results for Rayleigh scattering of sunlight in spherical atmospheres, JQSRT, 254,107181, 2020.

Liu, M., J. Lin, H. Kong, F. Boersma, H. Eskes, Y. Kanaya, Q. He, X. Tian, K. Qin, P. Xie, R. Spurr, R. Ni, Y. Yan, H. Weng, and J. Wang. A new TROPOMI product for tropospheric NO2 columns over East Asia with explicit aerosol corrections, Atmos. Meas. Tech., 13, 4247-4259, 2020.

Li., C., N. Krotkov, P. Leonard, S. Carn, J. Joiner, R. Spurr and A. Vasilkov. Version 2 Ozone Monitoring Instrument SO2 Product (OMSO2 V2): New Anthropogenic SO2 Vertical Column Density Dataset. Atmos. Meas. Tech., 13, 6175-6191, 2020.

Choi, M., S. P. Sander, R. J. D. Spurr, T. J. Pongetti, G. van Harten, B. J. Drouin, D. J. Diner, D. Crisp, A. Eldering, O. V. Kalashnikova, J. H. Jiang, J. J. Hyon, E. Im, D. Fu. Aerosol profiling using radiometric and polarimetric spectral measurements in the O2 near infrared bands: Estimation of information content and measurement uncertainties. Remote Sens. Env., 253, 112179, 2021.

Zhang, J., R. Spurr, J. S. Reid, X. Peng, P. Colarco, J. Campbell, E. Hyer, and N. Baker. Development of an OMI AI data assimilation scheme for aerosol modeling over bright surfaces—a step toward direct radiance assimilation at the UV spectrum. Geoscientific Model Development, 14, 27-42, 2021.

A. Vasilkov, N. Krotkov, E.-S. Yang, L. Lamsal, J. Joiner, P. Castellanos, Z. Fasnacht, and R. Spurr. Explicit and consistent aerosol correction for visible wavelength satellite cloud and nitrogen dioxide retrievals based on optical properties from a global aerosol analysis. Atmos. Meas. Tech., 14, 2857-2871, 2021.

Bak, J., X. Liu, R. Spurr, K. Yang, C. Nowlan, C. Miller, G. Abad, and K. Chance. Radiative transfer acceleration based on the Principal Component Analysis and Look-Up Table of corrections: Optimization and application to UV ozone profile retrievals, Atmos. Meas. Tech., 14, 2659–2672, 2021.

Fedkin, N, C. Li, N. Krotkov, P. Hedelt, D. Loyola, R. Dickerson and R. Spurr. Volcanic SO2 Effective Layer Height Retrieval for OMI Using a Machine Learning Method. Atmos. Meas. Tech., 14(5):3673-3691, 2021.

Sun, B., C. Gao , L. Bi and R. Spurr. Analytical Jacobians of single scattering optical properties using the invariant imbedding T-matrix method. Optics Express, 29(6), 9635-9669, 2021.

Tirpitz, J.-L., U. Friess, R. Spurr and U. Platt, Enhancing MAX-DOAS atmospheric state retrievals by multispectral polarimetry - studies using synthetic data. Atmos. Meas. Tech., 15, 2077-2098, 2022.

Korkin, S., E.-S. Yang, R. Spurr, C. Emde, P.Zhai, N. Krotkov, A. Vasilkov, and A. Lyapustin. Numerical Results 1 for Polarized Light Scattering in a Spherical Atmosphere, JQSRT, 287, 108194, doi.org/10.1016/j.jqsrt.2022.108194, 2022.

Natraj, V., R. Spurr, A. Gao, T. Le, Z.-C. Zeng, S. Fan, and Y. L. Yung, The 2 Stream-Exact Single Scattering (2S-ESS) Radiative Transfer Model, Journal of Quantitative Spectroscopy & Radiative Transfer 295, 108416, 2023.

Zhang, J., J. S. Reid, S. D. Miller, M. Roman, Z. Wang, R. J. D. Spurr, and S. Jaker. Sensitivity studies of nighttime TOA radiances from artificial light sources using a 3-D radiative transfer model for nighttime aerosol retrievals, Atmos. Meas. Tech., 16, 2531-2546, 2023.

Zhang, Y., J. Lin, J. Kim, H. Lee, J. Park, H. Hong, M. Van Roozendael, Q. He, K. Qin, Y. Choi, Y. Kanaya, J. Xu, P. Xie, R. Spurr, L. Chen, H. Kong, and M. Liu. POMINO-GEMS: A Research Product for Tropospheric NO2 Columns at High Spatiotemporal Resolution based on Geostationary Environment Monitoring Spectrometer (GEMS). Atmos. Meas. Tech., 16, 4643-4665, 2023.

Xiaozhen Xiong, Xu Liu, Robert Spurr, Ming Zhao, Qiguang Yang, and Wan Wu. An Improved BRDF Hotspot Model and its Use in VLIDORT to Study the Impact of Atmospheric Scattering on Hotspot Directional Signatures in the Atmosphere. Atmos. Meas. Tech., 17, 1965-1978, 2024.

Colosimo, S. F., J. Stutz, N. Brockway, V. Natraj, R. Spurr, P. Lawson, M. J. McGill, and T. Thornberry. Investigation of cirrus clouds properties in the Tropical Tropopause Layer using high-altitude limb scanning near-IR spectroscopy during the NASA-ATTREX Experiment, Atmos. Meas. Tech., 17, 2367-2385, 2024.