Los Alamos National Laboratory, Guest Scientist, (2009-2016)
Los Alamos National Laboratory, Technical Staff Member, Space & Remote Sensing Group (1998-2008)
NASA - Goddard Space Flight Center, GSFC Visiting Scientist (USRA), Climate & Radiation Branch (1992-1997)
Various teaching, outreach and research positions (1978-1986).
Remote sensing techniques, as applied to the Earth’s cloudy atmosphere, in visible, near-IR and shortwave-IR spectral regions, now emphasizing polarization diversity and oxygen absorption spectroscopy.
Tomographic reconstruction of 3D clouds and aerosol plumes (outer shapes, internal structures and microphysical properties) using passive multi-spectral/multi-angle imagery.
Visibility, imaging and atmospheric correction in scattering planetary atmospheres, e.g., Titan (in support of TRN) and Venus (in support of surface sensing from a below-cloud platform).
Computational vector radiative transfer in 1D vertically variable atmospheres over anisotropic polarizing surfaces, and in spatially complex 3D scattering or reflecting media such as clouds, cloud/aerosol/surface systems, vegetation and rough terrain.
Bayesian cloud and aerosol retrieval algorithms and information content analysis based on multi-pixel and/or time-domain signals.
Sensor-level observation system simulation experiments (OSSEs) and retrieval uncertainty quantification (UQ).
New instrument concepts/synergies, e.g., using active modalities such as off-beam/multiple-scattering cloud lidar.
Large- and small-scale radiation energetics for realistic 3D clouds and cloud/aerosol/surface systems.
Climate impacts of clouds and aerosols via energy and water cycles.
Multi-scale/multi-moment statistical analyses of nonlinear atmospheric processes using wavelet transforms, fractals and multifractals.
Fluid-dynamical, stochastic and hybrid simulation techniques, and validation with remote sensing data.
Statistical sampling issues, e.g., ground-based or airborne versus satellite platforms.
Selection below is only since joining JPL in February 2009. For a comprehensive list, please send request by email.
A.B. Davis, L. Forster, D.J. Diner, and B. Mayer, Toward cloud tomography from space using MISR and MODIS: The physics of image formation for opaque convective clouds, J. Atmos. Sci. (submitted). Preprint available at https://arxiv.org/abs/2011.14537.
L. Forster, A. B. Davis, D. J. Diner, and B. Mayer, Toward cloud tomography from space using MISR and MODIS: Locating the "veiled core" in opaque convective clouds, J. Atmos. Sci. 78, 155-166 (2021). https://doi.org/10.1175/JAS-D-19-0262.1
A. Levis, Y.Y. Schechner, A.B. Davis, and J. Loveridge, Multi-view polarimetric scattering cloud tomography and retrieval of droplet size, Remote Sensing 12, 2831- (2020). https://doi.org/10.3390/rs12172831
L.A. Remer, A.B. Davis, S. Mattoo, R.C. Levy, O.V. Kalashnikova, J. Chowdhary, K. Knobelspiesse, Z. Ahmad, E. Boss, B. Cairns, O. Coddington, H. M. Dierssen, D.J. Diner, B. Franz, R. Frouin, B.-C. Gao, A. Ibrahim, J. V. Martins, A.H. Omar, O. Torres, S.E. Platnick, F. Xu, and P.-W. Zhai, Retrieving Aerosol characteristics from the PACE Mission, Part 1: Ocean Color Instrument, Frontiers in Earth Science 7, 152- (2019). https://www.frontiersin.org/articles/10.3389/feart.2019.00152/full
A. B. Davis and O. V. Kalashnikova, Aerosol layer height over water via oxygen A-band observations from space: A tutorial, in Springer Series in Light Scattering, vol. 3: Radiative Transfer and Light Scattering, A. A. Kokhanovsky (Ed.), Springer, Heidelberg (Germany), pp. 133-166 (2019). https://doi.org/10.1007/978-3-030-03445-0
G. Bal, J. Chen, and A.B. Davis, Reconstruction of cloud geometry from high-resolution multi-angle images, Inverse Problems in Imaging 12, 261-280 (2018). https://doi.org/10.3934/ipi.2018011
F. Xu, G. van Harten, D. J. Diner, A. B. Davis, F. Seidel, B. Rheingans, M. Tosca, M. Alexandrov, B. Cairns, R. Ferrare, S. Burton, M. Fenn, C. Hostetler, R. Wood, and J. Redemann, Coupled retrieval of liquid water cloud and aerosol above cloud properties using the Airborne Multi-angle Spectro-Polarimetric Imager (AirMSPI), J. Geophys. Res. - Atmospheres 123, 3175-3204 (2018). https://doi.org/10.1002/2017JD027926
A. B. Davis, F. Xu, and D. J. Diner, Generalized radiative transfer theory for scattering by particles in an absorbing gas: Addressing both spatial and spectral integration in multi-angle remote sensing of optically thin aerosol layers, J. Quant. Spectrosc. Rad. Transf. 205, 148-162 (2018); https://doi.org/10.1016/j.jqsrt.2017.10.003. Addendum, J. Quant. Spectrosc. Rad. Transf. 206, 251-253 (2018); https://doi.org/10.1016/j.jqsrt.2017.11.018.
T. Fauchez, A. B. Davis, C. Cornet, F. Szczap, S. Platnick, P. Dubuisson, and F. Thieulieux, A fast hybrid (3D/1D) model for thermal radiative transfer in cirrus via successive orders of scattering, J. Geophys. Res. - Atmospheres 122, 344-366 (2017). https://doi.org/10.1002/2016JD025607
G. Merlin, J. Riédi, L. C.-Labonnote, C. Cornet, A. B. Davis, P. Dubuisson, M. Desmons, N. Ferlay, and F. Parol, Cloud information content analysis of multi-angular measurements in the oxygen A-band: Application to 3MI and MSPI, Atmos. Meas. Techn. 9, 4977-4995 (2016). https://doi.org/10.5194/amt-9-4977-2016
F. Xu, A. B. Davis and D. J. Diner, Markov chain formalism for generalized radiative transfer in a plane-parallel medium, accounting for polarization, J. Quant. Spectrosc. Rad. Transf. 184, 14-26 (2016). https://doi.org/10.1016/j.jqsrt.2016.06.004
I. Yanovsky and A. B. Davis, Separation of radiances from a cirrus layer and broken cumulus clouds in multispectral images, IEEE Trans. Geosc. and Remote Sens. 53, 2275-2285, (2015). https://doi.org/10.1109/TGRS.2014.2352319
A. A. Kokhanovsky, A. B. Davis, B. Cairns, O. Dubovik, O. Hasekamp, I. Sano, S. Mukai, V. V. Rozanov, P. Litvinov, T. Lapyonok, I. S. Kolomiets, Y. A. Oberemok, S. Savenkov, W. Martin, A. Wasilewski, A. Di Noia, F. A. Stap, J. Rietjens, F. Xu, V. Natraj, M. Duan, T. Cheng, and R. Munro, Space-based remote sensing of aerosols: The multi-angle spectro-polarimetric frontier, Earth-Science Reviews 145, 85-116 (2015). https://doi.org/10.1016/j.earscirev.2015.01.012
S. Sanghavi, A. B. Davis, and A. Eldering, vSmartMOM: A vector matrix operator method-based radiative transfer model linearized with respect to aerosol properties, J. Quant. Spectrosc. Rad. Transf. 133, 412-433 (2014). https://doi.org/10.1016/j.jqsrt.2013.09.004
I. Langmore, A.B. Davis, and G. Bal, Multi-pixel retrieval of structural and optical parameters in a 2D scene with a path-recycling Monte Carlo forward model and a new Bayesian inference engine, IEEE Trans. Geosc. and Remote Sens. 51, 2903-2919 (2013). https://doi.org/10.1109/TGRS.2012.2217380
F. Xu, R. A. West, and A. B. Davis, A hybrid method for polarized radiative transfer computation in a spherical-shell planetary atmosphere, J. Quant. Spectrosc. Rad. Transf. 117, 59-70 (2013). https://doi.org/10.1016/j.jqsrt.2012.10.013
A. B. Davis, M. J. Garay, F. Xu, Z. Qu, and C. Emde, 3D radiative transfer effects in multi-angle/multi-spectral radio-polarimetric signals from a mixture of clouds and aerosols viewed by a non-imaging sensor, in S.P.I.E. Proceedings, Vol. 8873, "Polarization Science and Remote Sensing VI," J. A. Shaw and D. A. LeMaster (Eds.), p. 887309 (2013). https://doi.org/10.1117/12.2023733
A. B. Davis, Some new lidar equations for laser pulses scattered back from optically thick media such as clouds, dense aerosol plumes, sea ice, and turbid coastal waters, in S.P.I.E. Proceedings, Vol. 8872, "Lidar Remote Sensing for Environmental Monitoring XIV," U. N. Singh (Ed.), p. 88720E (2013), https://doi.org/10.1117/12.2025341
F. Xu, A. B. Davis, S. Sanghavi, J. V. Martonchik, and D. J. Diner, Linearization of Markov chain formalism for radiative transfer in a plane-parallel atmosphere/surface system, Appl. Opt. 51, 3491-3507 (2012). https://doi.org/10.1364/AO.51.003491
D. J. Diner, R. Hodos, A. B. Davis, M. J. Garay, J. V. Martonchik, S. Sanghavi, P. von Allmen, A. A. Kokhanovsky, and P. Zhai, An optimization approach for aerosol retrievals using simulated MISR radiances, Atm. Res. 116, 1-14 (2012). https://doi.org/10.1016/j.atmosres.2011.05.020
G. Bal, A.B. Davis, and I. Langmore, A hybrid (Monte-Carlo/deterministic) approach for multi-dimensional radiation transport, J. Comput. Phys. 230, 7723-7735 (2011). https://doi.org/10.1016/j.jcp.2011.06.029
A. B. Davis and R. Sanchez, Preface - Two truly special sessions at the 2009 International Conference on Mathematics and Computational Methods (M&C 2009): Transport ... across disciplinary divides, J. Quant. Spectrosc. Rad. Transf. 112, 560-565 (2011). https://doi.org/10.1016/j.jqsrt.2010.11.014
A.B. Davis and M.B. Mineev-Weinstein, Radiation propagation in random media: From positive to negative correlations in high-frequency fluctuations, J. Quant. Spectrosc. Rad. Transf. 112 (Special Issue on "M&C2009"), 632-645 (2011). https://doi.org/10.1016/j.jqsrt.2010.10.001
O. V. Kalashnikova, M. J. Garay, A. B. Davis, D. J. Diner, and J. V. Martonchik, Sensitivity of multi-angle photo-polarimetery to vertical layering and mixing of absorbing aerosols: Quantifying measurement uncertainties, J. Quant. Spectrosc. Rad. Transf. 112, 2149-2163 (2011). https://doi.org/10.1016/j.jqsrt.2011.05.010
F. Xu, A. B. Davis, R. A. West, J. V. Martonchik, and D. J. Diner, Markov chain formalism for vector radiative transfer in a plane-parallel atmosphere overlaying a polarizing surface with bidirectional reflectivity, Opt. Lett. 36, 2083-2085 (2011). https://doi.org/10.1364/OL.36.002083
F. Xu, A. B. Davis, R. A. West, and L. W. Esposito, Markov chain formalism for polarized light transfer in plane-parallel atmospheres, with numerical comparison to the Monte Carlo method, Opt. Expr. 19, 946-967 (2011). Also in Virtual Journal for Biomedical Optics (VJBO) 6, 2/17/2011, pp. 946- (2011), http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-19-2-946.
M. de la Torre Juárez, A. B. Davis, and E. J. Fetzer, Scale-by-scale analysis of probability distributions for global MODIS-AQUA cloud properties: How the large-scale signature of turbulence may impact statistical analyses of clouds, Atmos. Chem. Phys. 11, 2893-2901 (2011). https://doi.org/10.5194/acp-11-2893-2011
N. Ferlay, F. Thieuleux, C. Cornet, A. B. Davis, C. Vanbauce, F. Ducos, P. Dubuisson, F. Parol, and J. Riédi, Toward new inferences about cloud structures from multidirectional measurements in the oxygen A-Band: Middle-of-cloud pressure and cloud geometrical thickness from POLDER-3/PARASOL, J. Appl. Meteor. Clim. 49, 2492-2507 (2010). https://doi.org/10.1175/2010JAMC2550.1
A.B. Davis, I.N. Polonsky, and A. Marshak, Space-time Green functions for diffusive radiation transport, in application to active and passive cloud probing, in Light Scattering Reviews, Vol. 4, A. Kohkanovsky (Ed.), Springer, Heidelberg (Germany), pp. 169-292 (2009). http://i3rc.gsfc.nasa.gov/Publications/Davis_etal_LSRv4_2009.pdf