Saji Abraham

Saji Abraham

  • SUPPORTING SCIENTIST
  • 301.286.8917 | 301.286.1810
  • NASA/GSFC
  • Mail Code: 616.1
  • Greenbelt , MD 20771
  • Employer: SGT INC
  • Brief Bio

    Saji Abraham received the Ph.D. degree in Space Physics from the University of Delhi, Delhi, India, the M.Sc. degree in Space Physics from Andhra University, Waltair, India, the M.S degree in Electrical and Computer Engineering with major in Photonics from The Johns Hopkins University, Baltimore, Maryland, and the B.Sc. degree in Physics from Kerala University, Trivandrum, India.

    Dr. Abraham has been supporting NASA projects since 1997. Currently, he is working with Wyle at Goddard Space Flight Center, Greenbelt, MD. His research interests include in developing forward and retrieval algorithms for space-born radiometric applications. He supported NASA space mission projects, Aquarius and SMAP (Soil Moisture Active/Passive), for sea surface salinity and soil moisture applications.

    Dr. Abraham is currently supporting data analysis of soil freeze/thaw state through microwave remote sensing (eg: use the data from SMAP, SLAPEx (Scanning L-band Active Passive Experiment) and in-situ measurements). He used MODIS IGBP land cover data to classify the radiometric brightness temperature from AMSR-E and AMSR2 measurements and address the impact of forest and topography in the retrieval of physical parameters from microwave radiometry from space.

    His expertise in interdisciplinary research activities include the basic theory of electromagnetic interaction with matter, radiative transfer theory, land/sea/ice thermal emission models, surface roughness, atmospheric and ionospheric emissions, Faraday rotation and polarization mixing, and celestial sky background that consist of solar, lunar, cosmic and galactic background emissions. He had been working on wide areas of ionosphere radio wave propagation techniques and published scientific articles on lower ionosphere dynamics and it’s coupling with the lower atmosphere through planetary waves and Quasi-biennial Oscillations.

    Dr. Abraham is a senior member of IEEE Geoscience and Remote Sensing Society and a member of the American Geophysical Union.

     

    Education

    Doctor of Philosophy (Ph.D.), Space Physics, University of Delhi, Delhi, India.
    Master of Science (M.Sc.), Space Physics, Andhra University, Waltair, India.
    Master of Science (M.S.), Photonics, The Johns Hopkins University, Baltimore, Maryland.
    Bachelor of Science (B.Sc.), Physics, University of Kerala, Trivandrum, India.

    Awards

    NASA Group Achievement award (2013).
    NASA peer award for outstanding publication (2008).
    NASA peer award for outstanding support (2004 and 2007).

    Other Professional Information

    Project Management Professional (PMP)
    Certified Associate in Project Management (CAPM)


    Selected Publications

    Refereed

    Le Vine, D. M., and S. Abraham. 2018. "Faraday Rotation Correction for SMAP and Soil Moisture Retrieval." IEEE Transactions on Geoscience and Remote Sensing, 56 (2): 655-668 [10.1109/tgrs.2017.2752642]

    Le Vine, D. M., S. Abraham, and J. Peng. 2016. "Faraday Rotation Correction for the SMAP Radiometer." IEEE Transactions on Geoscience and Remote Sensing, 54 (4): 2070-2081 [10.1109/tgrs.2015.2495168]

    Le Vine, D. M., E. P. Dinnat, G. S. Lagerloef, et al. P. de Matthaeis, S. Abraham, C. Utku, and H. Kao. 2014. "Aquarius: Status and recent results." Radio Science, 49 (9): 709-720 [10.1002/2014rs005505]

    Le Vine, D. M., E. P. Dinnat, E. Lagerloef, et al. P. de Matthaeis, S. Abraham, S. Utku, and H. Kao. 2014. "Aquarius: Status and recent results." Radio Science, 49 (9): 709–720 [10.1002/2014RS005505]

    Le Vine, D., S. Abraham, C. Utku, and E. P. Dinnat. 2013. "Aquarius Third Stokes Parameter Measurements: Initial Results." IEEE Geosci. Remote Sensing Lett., 10 (3): 520-524 [10.1109/LGRS.2012.2211994]

    Le Vine, D. M., E. P. Dinnat, S. D. Jacob, S. Abraham, and P. de Matthaies. 2011. "Impact of Antenna Pattern on Measurement of the Third Stokes Parameter From Space at L-Band." IEEE Trans. Geoscience and Remote Sensing, 49 (1): 406-414 [10.1109/TGRS.2010.2051953]

    Le Vine, D. M., E. P. Dinnat, S. Abraham, P. Matthaeis, and F. Wentz. 2011. "The Aquarius Simulator and Cold-Sky Calibration." IEEE Trans. Geosci. Remote Sensing, 49 (9): 3198-3210 [10.1109/TGRS.2011.2161481]

    Dinnat, E. P., S. Abraham, D. M. Le Vine, P. De Matthaeis, and S. D. Jacob. 2009. "Effect of Emission From the Moon on Remote Sensing of Sea Surface Salinity: An Example With the Aquarius Radiometer." IEEE Geosci. Remote Sensing Lett., 6 (2): 239-243 [10.1109/LGRS.2008.2008822]

    Le Vine, D. M., D. S. Jacob, E. P. Dinnat, P. de Matthaeis, and S. Abraham. 2007. "The influence of antenna pattern on Faraday rotation in remote sensing at L-band." IEEE Transactions on Geoscience and Remote Sensing, 45 (9): 2737–2746.

    Le Vine, D. M., and S. Abraham. 2004. "Galactic Noise and Passive Microwave Remote Sensing From Space at L-Band." IEEE Trans Geosci Remote Sens, 42 (1): 119-129.

    Abraham, S., and D. M. Le Vine. 2004. "Use of IRI to model the effect of ionosphere emission on earth remote sensing at L-band." Adv Space Res, 34: 2059-2066.

    Le Vine, D. M., and S. Abraham. 2002. "The Effect of the Ionosphere on Remote Sensing of Sea Surface Salinity from Space: Absorption and Emission at L Band." IEEE Trans Geosci Remote Sens, 40 (4): 771-782.

    Abraham, S., and D. M. Le Vine. 2001. "Evaluation of IRI-95 to correct errors caused by Faraday rotation in passive microwave remote sensing from space." Advances in Space Research, 27 (1): 153-156.

    Non-Refereed

    Le Vine, D. M., J. R. Piepmeier, E. P. Dinnat, et al. P. de Matthaeis, C. Utku, S. Abraham, G. S. Lagerloef, T. Meissner, and F. Wenz. 2014. "Aquarius radiometer status." Microwave Radiometry and Remote Sensing of the Environment (MicroRad), 2014 13th Specialist Meeting on 226 - 227 [10.1109/MicroRad.2014.6878945]

    Dinnat, E. P., D. M. Le Vine, S. Abraham, and P. de Matthaeis. 2012. "Comparison of Aquarius Measurements and Radiative Transfer Models at L-band." 2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) 1-4 [10.1109/MicroRad.2012.6185231]

    de Matthaeis, P., D. M. Le Vine, E. P. Dinnat, D. S. Jacob, and S. Abraham. 2008. "Simulation of the AQUARIUS Radar Scatterometer." Proceedings of the XXIXth URSI General Assembly 4 pp.

    Dinnat, E. P., D. M. Le Vine, and S. Abraham. 2008. "L-band radiometry and reflection of the galaxy by a rough ocean surface ." Microwave Radiometry and Remote Sensing of the Environment (MICRORAD) 2008 1-4, ISBN: 978-1-4244-1986-9 . [10.1109/MICRAD.2008.4579494]

    Le Vine, D. M., S. Abraham, S. D. Jacob, E. P. Dinnat, and P. de Matthaeis. 2007. "The influence of antenna pattern on Faraday rotation in remote sensing at L-band." IEEE International Geoscience and Remote Sensing Symposium (IGARSS) 2007 239 - 242 , ISBN: 978-1-4244-1211-2 . [10.1109/IGARSS.2007.4422774 ]

    Brief Bio

    Saji Abraham received the Ph.D. degree in Space Physics from the University of Delhi, Delhi, India, the M.Sc. degree in Space Physics from Andhra University, Waltair, India, the M.S degree in Electrical and Computer Engineering with major in Photonics from The Johns Hopkins University, Baltimore, Maryland, and the B.Sc. degree in Physics from Kerala University, Trivandrum, India.

    Dr. Abraham has been supporting NASA projects since 1997. Currently, he is working with Wyle at Goddard Space Flight Center, Greenbelt, MD. His research interests include in developing forward and retrieval algorithms for space-born radiometric applications. He supported NASA space mission projects, Aquarius and SMAP (Soil Moisture Active/Passive), for sea surface salinity and soil moisture applications.

    Dr. Abraham is currently supporting data analysis of soil freeze/thaw state through microwave remote sensing (eg: use the data from SMAP, SLAPEx (Scanning L-band Active Passive Experiment) and in-situ measurements). He used MODIS IGBP land cover data to classify the radiometric brightness temperature from AMSR-E and AMSR2 measurements and address the impact of forest and topography in the retrieval of physical parameters from microwave radiometry from space.

    His expertise in interdisciplinary research activities include the basic theory of electromagnetic interaction with matter, radiative transfer theory, land/sea/ice thermal emission models, surface roughness, atmospheric and ionospheric emissions, Faraday rotation and polarization mixing, and celestial sky background that consist of solar, lunar, cosmic and galactic background emissions. He had been working on wide areas of ionosphere radio wave propagation techniques and published scientific articles on lower ionosphere dynamics and it’s coupling with the lower atmosphere through planetary waves and Quasi-biennial Oscillations.

    Dr. Abraham is a senior member of IEEE Geoscience and Remote Sensing Society and a member of the American Geophysical Union.

     

    Selected Publications

    Refereed

    Le Vine, D. M., and S. Abraham. 2018. "Faraday Rotation Correction for SMAP and Soil Moisture Retrieval." IEEE Transactions on Geoscience and Remote Sensing 56 (2): 655-668 [10.1109/tgrs.2017.2752642]

    Le Vine, D. M., S. Abraham, and J. Peng. 2016. "Faraday Rotation Correction for the SMAP Radiometer." IEEE Transactions on Geoscience and Remote Sensing 54 (4): 2070-2081 [10.1109/tgrs.2015.2495168]

    Le Vine, D. M., E. P. Dinnat, G. S. Lagerloef, et al. P. de Matthaeis, S. Abraham, C. Utku, and H. Kao. 2014. "Aquarius: Status and recent results." Radio Science 49 (9): 709-720 [10.1002/2014rs005505]

    Le Vine, D. M., E. P. Dinnat, E. Lagerloef, et al. P. de Matthaeis, S. Abraham, S. Utku, and H. Kao. 2014. "Aquarius: Status and recent results." Radio Science 49 (9): 709–720 [10.1002/2014RS005505]

    Le Vine, D., S. Abraham, C. Utku, and E. P. Dinnat. 2013. "Aquarius Third Stokes Parameter Measurements: Initial Results." IEEE Geosci. Remote Sensing Lett. 10 (3): 520-524 [10.1109/LGRS.2012.2211994]

    Le Vine, D. M., E. P. Dinnat, S. D. Jacob, S. Abraham, and P. de Matthaies. 2011. "Impact of Antenna Pattern on Measurement of the Third Stokes Parameter From Space at L-Band." IEEE Trans. Geoscience and Remote Sensing 49 (1): 406-414 [10.1109/TGRS.2010.2051953]

    Le Vine, D. M., E. P. Dinnat, S. Abraham, P. Matthaeis, and F. Wentz. 2011. "The Aquarius Simulator and Cold-Sky Calibration." IEEE Trans. Geosci. Remote Sensing 49 (9): 3198-3210 [10.1109/TGRS.2011.2161481]

    Dinnat, E. P., S. Abraham, D. M. Le Vine, P. De Matthaeis, and S. D. Jacob. 2009. "Effect of Emission From the Moon on Remote Sensing of Sea Surface Salinity: An Example With the Aquarius Radiometer." IEEE Geosci. Remote Sensing Lett. 6 (2): 239-243 [10.1109/LGRS.2008.2008822]

    Le Vine, D. M., D. S. Jacob, E. P. Dinnat, P. de Matthaeis, and S. Abraham. 2007. "The influence of antenna pattern on Faraday rotation in remote sensing at L-band." IEEE Transactions on Geoscience and Remote Sensing 45 (9): 2737–2746

    Le Vine, D. M., and S. Abraham. 2004. "Galactic Noise and Passive Microwave Remote Sensing From Space at L-Band." IEEE Trans Geosci Remote Sens 42 (1): 119-129

    Abraham, S., and D. M. Le Vine. 2004. "Use of IRI to model the effect of ionosphere emission on earth remote sensing at L-band." Adv Space Res 34 2059-2066

    Le Vine, D. M., and S. Abraham. 2002. "The Effect of the Ionosphere on Remote Sensing of Sea Surface Salinity from Space: Absorption and Emission at L Band." IEEE Trans Geosci Remote Sens 40 (4): 771-782

    Abraham, S., and D. M. Le Vine. 2001. "Evaluation of IRI-95 to correct errors caused by Faraday rotation in passive microwave remote sensing from space." Advances in Space Research 27 (1): 153-156

    Non-Refereed

    Le Vine, D. M., J. R. Piepmeier, E. P. Dinnat, et al. P. de Matthaeis, C. Utku, S. Abraham, G. S. Lagerloef, T. Meissner, and F. Wenz. 2014. "Aquarius radiometer status." Microwave Radiometry and Remote Sensing of the Environment (MicroRad), 2014 13th Specialist Meeting on 226 - 227 [10.1109/MicroRad.2014.6878945]

    Dinnat, E. P., D. M. Le Vine, S. Abraham, and P. de Matthaeis. 2012. "Comparison of Aquarius Measurements and Radiative Transfer Models at L-band." 2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) 1-4 [10.1109/MicroRad.2012.6185231]

    de Matthaeis, P., D. M. Le Vine, E. P. Dinnat, D. S. Jacob, and S. Abraham. 2008. "Simulation of the AQUARIUS Radar Scatterometer." Proceedings of the XXIXth URSI General Assembly 4 pp.

    Dinnat, E. P., D. M. Le Vine, and S. Abraham. 2008. "L-band radiometry and reflection of the galaxy by a rough ocean surface ." Microwave Radiometry and Remote Sensing of the Environment (MICRORAD) 2008 1-4 [10.1109/MICRAD.2008.4579494]

    Le Vine, D. M., S. Abraham, S. D. Jacob, E. P. Dinnat, and P. de Matthaeis. 2007. "The influence of antenna pattern on Faraday rotation in remote sensing at L-band." IEEE International Geoscience and Remote Sensing Symposium (IGARSS) 2007 239 - 242 [10.1109/IGARSS.2007.4422774 ]

                                                                                                                                                                                            
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