Dr. James Carswell
Founder & Chief Technology Officer
Dr. James R. Carswell received the Ph.D. degree in Electrical Engineering from the University of Massachusetts-Amherst and the B.S.E.E degree from Tufts University. He is an adjunct professor at UMass. As co-founder and president of RSS, Dr. Carswell serves as the Company’s main technology visionary for providing hardware, digital processing and data management solutions for remote sensing applications. He has lead the development of an FPGA-based digital receiver for the NASA High Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP) that will be deployed on the NASA Global Hawk UAV. He designed the solid-state Ku/Ka-band transceiver for HIWRAP and lead the design and development of a similar transceiver in support of a ground validation Ku/Ka-band radar for the NASA GPM mission (D3R). Dr. Carswell has developed and implemented real-time inversion algorithms to derive the ocean surface wind field from measurements acquired with NOAA’s operational instrumentation and has developed real-time inversion algorithms for extracting precipitation rates and ABL winds. This work has been used to support NASA’s QuikSCAT mission. He has also led the development of an adaptable web server and processor to provide real-time and historical access to sensor data on the NOAA WP-3D aircraft and is very familiar with the aircraft and scientific data being collected by this platform. He was the principal investigator on a project with NOAA Aircraft Operations Center to develop the next generation main data system on the NOAA aircraft. This system is responsible for collecting, storing, processing and distributing all data collected on NOAA aircraft. Dr. Carswell has been designing, developing and deploying remote sensing instrumentation since 1992. His accomplishments prior to founding Remote Sensing Solutions include: leading the unmanned aerial vehicle (UAV) and hurricane remote sensing programs at the University of Massachusetts; developing the first solid-state airborne W-band cloud radar for use on UAVs; developing the first solid-state airborne W-band Cloud Radar utilizing digital pulse compression and achieving sensitivities equal to EIK amplifier based systems; developing the first dual-wavelength Doppler radar for airborne hurricane remote sensing (IWRAP); and leading the development of a wireless broadband network solution based on the 802.16 (WiMAX) draft standard.
Selected Articles and Presentations
Lihua Li; Heymsfield, G.; Carswell, J.; Schaubert, D.; McLinden, M.; Vega, M.; Perrine, M.; “Development of the NASA High-Altitude Imaging Wind and Rain Airborne Profiler,” 2011 IEEE Aerospace Conference, pp. 1 – 8.
Chandrasekar, V.; Schwaller, M.; Vega, M.; Carswell, J.; Mishra, K.V.; Meneghini, R.; Cuong Nguyen; “Scientific and engineering overview of the NASA Dual-Frequency Dual-Polarized Doppler Radar (D3R) system for GPM Ground Validation,” 2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), pp. 1308 – 1311.
Carswell, J.R.; Perkovic, D.; Tao Chu; Frasier, S.J.; Chang, P.; Jelenak, Z.; “Preliminary investigation of splash effect on high wind C-band HH-pol model function,” 2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), pp. 2539 – 2542.
Vega, M.; Carswell, J.; Chandrasekar, V.; Schwaller, M.; Mishra, K.V.; “Realization of the NASA Dual-Frequency Dual-Polarized Doppler Radar (D3R),” 2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), pp. 4815 – 4818.
Carswell, J.R.; Heymsfield, G.; Lihua Li; Schaubert, D.; Creticos, J.; “A High Altitude Airborne Wind Mapping Radar,” 2008 IEEE Aerospace Conference, pp. 1 – 7.
McManus, J.J.; Frasier, S.J.; Carswell, J.R.; “Implementation of Pulse Compression on an Airborne Scatterometer,” IEEE International Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. Vol. 4, pp. IV – 1418 to IV – 1421.
Contreras, R.; Frasier, S.; Chu, T.; Perkovic, D.; McManus, J.; Chang, P.; Jelenak, Z.; Carswell, J.; Esteban-Fernandez, D.; “The Imaging Wind and Rain Airborne Profiler (IWRAP) Data Archive,” IEEE International Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. Vol. 4, pp. IV – 1181 to IV – 1184.
Lihua Li; Heymsfield, G.; Carswell, J.; Schaubert, D.; Creticos, J.; Vega, M.; “High-Altitude Imaging Wind and Rain Airborne Radar (HIWRAP),” IEEE International Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. Vol. 3, pp. III – 354 to III – 357.
J Carswell, S. Bidwell, R. Menehini, “A Novel Solid-State, Dual Polarized, Dual Wavelength Precipitation Doppler Radar / Radiometer,” IGARSS 2008, Boston, MA, July, 2008.
Tao Chu; Frasier, S.J.; Fernandez, D.E.; Chang, P.S.; Carswell, J.R.; “The Impact of Surface Scattering on Ocean Atmospheric Boundary Layer (ABL) Wind Profile Estimates from an Airborne Doppler Radar,” IGARSS 2008. Vol. 4, pp. IV – 61 to IV – 64.
J Carswell, G. Heymsfield, L. LI, D. Schaubert, J. Creticos, “A High Altitude Airborne Wind Mapping Radar,” 2008 IEEE Aerospace Conference, Big Sky, Montana, 2008.
- Uhlhorn, et. al, “Hurricane Surface Wind Measurements from an Operation Stepped Frequency Microwave Radiometer,” Monthly Weather Review, accepted for publication in 2007.
Sekelsky, S.M.; Carswell, J.; “High power electronic scanning millimeter-wave radar system design,” 2006 IEEE Aerospace Conference, Publication Year: 2006.
- Esteban Fernandez, J.R. Carswell, et. al.,”Dual-polarized C- and Ku-band Ocean Backscatter response to Hurricane Force Winds,” Journal of Geophysical Research (Oceans), Vol. 111, Aug 2006.
Fernandez, D.E.; Chang, P.; Carswell, J.; Contreras, R.; Chu, T.; “Spectral Behavior of the Ocean Surface Backscatter and the Atmospheric Boundary Layer at C- and Ku-band under High wind and Rain Conditions,” IGARSS 2006. Proceedings. pp. 1871 – 1874.
Fernandez, D.E.; Chang, P.S.; Carswell, J.R.; Contreras, R.F.; Frasier, S.J.; “Airborne measurements of rain and the ocean surface backscatter response at C- and Ku-band,” IGARSS ’05. Proceedings. Vol. 1.
- Esteban, E. Kerr, J. Carswell, A. Zhang, P. Chang, Frasier, S., “IWRAP: the Imaging Wind and Rain Airborne Profiler for Ocean and Atmospheric Boundary Layer Remote Sensing,” IEEE Transactions on Geoscience and Remote Sensing, Vol. 43, No. 8, pp. 1775-1787, 2005.
Fernandez, D.E.; Kerr, E.; Frasier, S.; Carswell, J.; Chang, P.; Jelenak, Z.; Connor, L.; Black, P.; Marks, F.; Alex Zhang; “C- and Ku-band ocean backscatter measurements under extreme wind conditions,” IGARSS ’04. Proceedings. Vol. 1.
Yinghai Ke; Xuehu Zhang; Xiuwan Chen; Jilong Yang; Esteban, D.; Carswell J; Frasier, S.; McLaughlin, D.J.; Chang, P.; Black, P.; Marks, F.; “3-D hurricane boundary layer wind retrieval algorithm for airborne Doppler radar measurements,” IGARSS ’04. Proceedings. Vol. 1.
Jilong Yang; Xuehu Zhang; Xiuwan Chen; Yinghai Ke; Esteban, D.; Carswell, J.; Frasier, S.; McLaughlin, D.J.; Chang, P.; Black, P.; Marks, F.; “Effect of precipitation on ocean wind scatterometry,” IGARSS ’04. Proceedings. Vol. 7, pp. 4913 – 4916.
Fernandez, D.E.; Xuehu Zhang; Castells, A.; McLaughlin, D.; Carswell, J.; Paul Chang; Connor, L.; Black, P.; Marks, F.; “The Imaging Wind and Rain Airborne Profiler – a dual frequency dual polarized conically scanning airborne profiling radar,” IGARSS ’03. Proceedings. Vol. 7, pp. 4246 – 4248.
Fernandez, D.E.; Xuehu Zhang; Carswell, J.; McLaughlin, D.; Chang, P.; Connor, L.; Black, P.G.; Marks, F.D.; “Hurricane wind and rain measurements using a dual polarized C/Ku-band airborne radar profiler,” IGARSS ’03. Proceedings. Vol. 2, pp. 1247 – 1248.
Roman-Nieves, J.I.; Sekelsky, S.M.; Carswell, J.R.; Bolton, W.R.; Tooman, T.P.; “High altitude compact solid state 95 GHz cloud radar,” IGARSS ’02. Vol. 5, pp. 2672 – 2674.
- Frasier, F. Wang, J. Carswell, E. Knapp, and C. Swift; “Pier-based observations of polarized sea surface emission,” Radio Science, 36, 4, 2001.
Castells, A.; Carswell, J.R.; Chang, P.S.; “A high-resolution Imaging Wind and Rain Airborne Profiler for tropical cyclones,” IGARSS ’01. Vol. 5, pp. 2013 – 2015.
- Ramanathan, R. Tessier, D. McLaughlin, J. Carswell, S. Frasier, “Acquisition of Sensing Data on a Reconfigurable Platform,” Proc. of the IEEE International Geoscience and Remote Sensing Symposium, Sydney, Australia, 9-13 July 2001, Vol. 1, pp. 222-223.
Frasier, S.J.; Carswell, J.R.; Capdevila, J.; “A pod-based dual-beam interferometric radar for ocean surface current vector mapping,” IGARSS ’01. Vol. 1, pp. 561 – 563.
Carswell, J.R.; Knapp, E.J.; Chang, P.S.; Black, P.D.; Marks, F.D.; “Limitations of scatterometry high wind speed retrieval,” IGARSS 2000. Proceedings. Vol. 3, pp. 1226 – 1228.
Knapp, E.J.; Carswell, J.R.; Swift, C.T.; “A dual polarization multi-frequency microwave radiometer,” IGARSS 2000. Proceedings. Vol. 7, pp. 3160 – 3162.
Chang, P.S.; Connor, L.N.; Carswell, J.R.; Dunbar, R.S.; “Operational scatterometry: high wind speed retrievals,” IGARSS 2000. Proceedings. Vol. 3, pp. 1045 – 1047.
Connor, L.N.; Chang, P.S.; Carswell, J.R.; “Identification and possible correction of rain contamination in QuikScat/SeaWinds wind retrievals,” IGARSS 2000. Proceedings. Vol. 3, pp. 1238 – 1240.
Stephens, Ellingson, Vitko, Bolton, Tooman, Valero, Minnis, Pilewskie, Phipps, Sekelsky, Carswell, Miller, Benedetti, McCoy, Lederbuhr, Bambha, “The Department of Energy’s Atmospheric Radiation Measurement (ARM) Unmanned Aerospace (UAV) Program,” Bulletin of American Meteorological Society, 81(12), 2000.
J.R. Carswell, W.J. Donnelly, R.E. McIntosh, M.A. Donelan and D.C. Vandemark, “Analysis of C and Ku-band Ocean Backscatter Measurements Under Low-wind Conditions,” Journal of Geophysical Research (Oceans), 104(C9), pp. 20687-20701, 1999.
W.J. Donnelly, J.R. Carswell, R.E. McIntosh, P. Chang, J. Wilkerson, P. Black, F. Marks, “Revised Ocean Backscatter Models at C and Ku-band Under High Wind Conditions,” Journal Of Geophysical Research (Oceans), 104(C5), pp. 11485-11498, 1999.
Carswell, J.; Knapp, E.; Goodberlet, M.; Chang, P.; “Active/passive remote sensing of ocean wind vector for hurricane reconnaissance applications,” IGARSS ’99 Proceedings. Vol. 3, pp. 1854 – 1856.
Donnelly, W.J.; Carswell, J.R.; McIntosh, R.E.; Chang, P.S.; Wilkerson, J.C.; “Investigation of the ocean backscatter during high wind events. II. Analyses and revised high wind backscatter models,” IGARSS ’98 Proceedings. Vol. 5, pp. 2314 – 2316.
Jones, W.L.; Jun-Dong Park; Donnelly, W.J.; Carswell, J.R.; McIntosh, R.E.; Zec, J.; Yueh, S.; “An improved NASA Scatterometer geophysical model function for tropical cyclones,” IGARSS 1998 Proceedings. Vol. 4, pp. 1994 – 1997.
Chang, P.S.; Wilkerson, J.C.; Donnelly, W.J.; Carswell, J.R.; McIntosh, R.E.; “Investigation of the ocean backscatter during high wind events. I. Experiment description and results,” IGARSS 1998 Proceedings. Vol. 5, pp. 2311 – 2313.
Bambha, R.P.; Carswell, J.R.; Mead, J.B.; McIntosh, R.E.; “A compact millimeter wave radar for airborne studies of clouds and precipitation,” IGARSS 1998 Proceedings. Vol. 1, pp. 443 – 445.
David E. Weissman, Fuk K. Li, Shu-hsiang Lou, Son V. Nghiem, Gregory Neumann, Robert E. McIntosh, Steven C. Carson, James R. Carswell, Hans C. Graber, Robert E. Jensen; “Measurements of Ocean Surface Stress Using Aircraft Scatterometers,” Journal of Atmospheric and Oceanic Technology Volume 14, Issue 4 (August 1997) pp. 835-848.
Petronino, M.; Bambha, R.; Carswell, J.; Burleson, W.; “An FPGA-based data acquisition system for a 95 GHz W-band radar,” IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP-97). Vol. 5, pp. 4105 – 4108.
Gasiewski, A.J.; Piepmeier, J.R.; McIntosh, R.E.; Swift, C.T.; Carswell, J.R.; Donnelly, W.J.; Knapp, E.; Westwater, E.R.; Irisov, V.I.; Fedor, L.S.; Vandemark, D.C.; “Combined high-resolution active and passive imaging of ocean surface winds from aircraft,” IGARSS ’97. Remote Sensing – A Scientific Vision for Sustainable Development. Vol. 2, pp. 1001 – 1005.
Vandemark, D.; Hines, D.; Chapron, B.; Carswell, J.; Donnelly, W.; “Observations of the ocean surface using an aircraft altimeter, scatterometer and ROWS,” IGARSS ’96. ‘Remote Sensing for a Sustainable Future.’, Vol. 2, pp. 1385 – 1388.
Carswell, J.; Donnelly, W.; McIntosh, R.; “Remote sensing of the near surface-ocean wind vector under low-wind conditions using scatterometry,” IGARSS ’96. ‘Remote Sensing for a Sustainable Future.’, Vol. 3, pp. 1466 – 1468.
Carswell, J.; Donnelly, W.; McIntosh, R.; “Investigation of the azimuthal response of off-nadir backscatter from the ocean surface,” IGARSS ’95. ‘Quantitative Remote Sensing for Science and Applications’, Vol. 3, pp. 1637 – 1639.
Nghiem, S.V.; Li, F.K.; Shu-Hsiang Lou; Neumann, G.; McIntosh, R.E.; Carson, S.C.; Carswell, J.R.; Walsh, E.J.; Donelan, M.A.; Drennan, W.M.; “Observations of radar backscatter at Ku and C bands in the presence of large waves during the Surface Wave Dynamics Experiment,” IEEE Transactions on Geoscience and Remote Sensing, Vol. 33, Issue 3, pp. 708 – 721.
Carswell, J.R.; Carson, S.C.; McIntosh, R.E.; Li, F.K.; Neumann, G.; McLaughlin, D.J.; Wilkerson, J.C.; Black, P.G.; Nghiem, S.V.; “Airborne scatterometers: investigating ocean backscatter under low and high-wind conditions,” Proceedings of the IEEE, Vol. 82 , Issue 12, pp. 1835 – 1860.
Chief Financial Officer
Mr. James D. Canniff holds a MBA from Babson College and a BS in Accounting from Providence College. As CFO he performs the Controllership responsibilities of the company, including the preparation of financial statements, assistance with proposals and budgets, and the negotiation and administration of corporate contracts.
Mr. Canniff also assists with Product Development. He has been designing and developing complex software systems in varying capacities for the past several years. He has been instrumental in designing, deploying, supporting and training users of these systems for a variety of Fortune 500 companies. His expertise in designing and constructing user interfaces coupled with extensive experience in user requirements gathering and business systems analysis has lead to the successful deployment of many web-based application.
Mr. Canniff joined RSS to collaborate on the initial development of the Storm Analyzer System built for NOAA NESDIS/ORA. Mr. Canniff designed and produced the user interface for this system, which included determining an appropriate architecture and creating logical and visual components using Java technology. Prior to joining RSS, Mr. Canniff worked for Widax Corporation as a software engineer designing an advanced network data management system for a wireless internet base station system driving the development of the IEEE 802.16 (WiMAX) standard. He has also worked as an electronic commerce consultant to Fortune 500 companies. As a team member in these consultative roles, he devised and built web-based systems such as: call center applications, knowledge management systems, global expatriate human resources systems and marketplace exchange solutions, to name a few.
Chief Executive Officer
Mr. Mike Fernandes holds a BSME from Northeastern University and a Certificate in Management Essentials from Wharton Business School. Prior to joining RSS, Mr. Fernandes spent his career in leadership roles at various companies designing and manufacturing elastomeric seals for various markets. He co-founder and led an ISO9001 and TS16949 design and manufacturing company that grew sales through the development of products/processes, development of IP, building a sales network, development of a state of the art manufacturing facility, and through the acquisition of 2 smaller competitors.
Mr. Fernandes’ technical, business and entrepreneurial skills are being utilized by RSS to help it develop and commercialize products and services the company has spent years in research and development. Mr. Fernandes believes that game changing products and services can be developed for applications in aerospace, automotive, marine, defense, environment, and science.
Dr. Delwyn Moller
Principal Systems Engineer
Delwyn Moller is a Principal Systems Engineer at Remote Sensing Solutions (RSS) Inc. She received the Ph.D. degree in Electrical Engineering from the University of Massachusetts-Amherst, the M.E (with Distinction) degree from University of Auckland, New Zealand and the B.E. (Hons) degree from University of Auckland, New Zealand. Since joining RSS, Dr. Moller has continued her development of novel remote sensing systems for Earth Science. Prior to joining RSS, Dr. Moller was a radar system engineer at NASA Jet Propulsion Laboratory, where she was Principal and Co-Investigator on many research projects to include radar remote-sensing of the ocean, soil moisture, cryosphere and surface-water bodies. She was a co-recipient of the NASA Space Act award (2004) a NASA Board Award (2011) and has received three NASA Technology Brief awards.
Moller, D., S. Hensley, G. Sadowy, C. Fisher, T. Michel, and M. Zawadzki, The Glacier and Land Ice Surface Topography Interferometer: “An airborne proof-of-concept demonstration of high-precision Ka-band single-pass elevation mapping”, IEEE Transactions on Geoscience and Remote Sensing, Vol. 49, PP 827-842, Feb 2011, doi:10.1109/TGRS.2010.2057254.
Durand, M., K. M. Andreadis, D. E. Alsdorf, D. P. Lettenmaier, D. Moller, and M. Wilson, “Estimation of bathymetric depth and slope from data assimilation of swath altimetry into a hydrodynamic model,” Geophys. Res. Lett., 35, L20401, doi:10.1029/2008GL034150, October 2008.
Bjerklie D., D.Moller, L.Smith, S.L.Dingman, “Estimating Discharge in Rivers Using Remotely Sensed Hydraulic Information,” Journal of Hydrology, 309, pp 191-209, 2003.
Kim D., W.M. Moon, D. Moller, D. Imel, “Measurements of Ocean Surface Waves and Currents Using L- and C-Band Along-Track Interferometric SAR,” IEEE Transactions on Geoscience and Remote Sensing, Vo1. 41, No. 12, 2003.
Moller D., P.D. Mourad, S.J. Frasier, “Field Observations of Radar Backscatter From the Ocean Surface Under Low Wind Speed Conditions,” Journal of Geophysical Research, Vol. 105(C10), 24,059-24,069, 2000.
Moller D., S.J. Frasier, D.L. Porter, R.E. McIntosh, “Radar-derived Interferometric Surface Currents and their Relationship to Subsurface Current Structure,” Journal of Geophysical Research, Vol. 103(C6), 12,839-12,852, 1998.
Sadowy G, B.Heavey, D. Moller, E. Rignot, M. Zawadzki, S. Rengarajan, “Technology Demonstration of Ka-band Digitally-Beamformed Radar for Ice Topography Mapping,” IEEE Aerospace Conference, Big Sky Montana, 2007.
Moller D., E. Rodriguez, M. Moghaddam, J. Hoffman, “A Dual-low-frequency Radar for Sub-canopy and Deep Soil-moisture Measurements,” 2003 IEEE Aerospace Conference, Big Sky Montana, 2003.
Pollard B., G. Sadowy, D. Moller, E. Rodríguez: “A Millimeter-wave Phased Array Radar for Hazard Detection and Avoidance on Planetary Landers,” Proceedings of the IEEE Aerospace Conference, Big Sky MT, 2003.
Invited Paper: Moller D., B. Heavey, R. Hodges, S. Rengarajan, E. Rignot, G. Sadowy, M. Simard and M. Zawadzki, “The Application of Digital Beamforming Techniques to Enable Swath Mapping of Land Ice and Glacial Topography,” IGARSS 2008, Boston.
Invited Paper: Moller D., B. Heavey, E. Rignot, G. Sadowy, M. Simard and M. Zawadzki, “A Novel Ka-band Digitally Beamformed Interferometric Synthetic Aperature Radar for Glacier and Ice-sheet Topographic Mapping: Concept and Technology Development,” EUSAR 08, Friedrichshafen, Germany.
- Heavey, D. Moller, G.Sadowy and J. Tanabe, “Technology Development of a Compact, Radar Digital Receiver,” ESTC 08, University Park, Maryland.
Moller D., Gim, Y., B. Heavey, R. Hodges, S. Rengarajan, E. Rignot, F. Rogez, G. Sadowy, M. Simard, M. Zawadzki, “Technology Development of a Novel Ka-band Digitally-Beamformed Interferometric Radar With Application to Ice Topography Mapping”, NASA Science and Technology Conference, University Park Maryland, 2007.
Moller D., B. Heavey, R. Hodges, S. Rengarajan, E. Rignot, F. Rogez, G. Sadowy, M. Simard, M. Zawadzki, “The Glacier and Land Ice Surface Topography Interferometer (GLISTIN): A Novel Ka-band Digitally Beamformed Interferometer,” ESTC ‘06 Conference, University Park, Maryland 2006.
Moller D., K.Aaron, Y.Gim, B.Heavey, R.Hodges, A.Nicolson, S.Rengarajan, E.Rignot, F.Rogez, G.Sadowy, M.Simard, M.Zawadzki, “An Interferometric Ka-band Synthetic Aperature Radar: A New Technique for Glacier and Ice-sheet Topography Mapping,” Fall American Geophysical Union Meeting Abstract, 2006.
Rodriguez E., D. Moller, “Retrieving High Precision River Stages and Slopes From Space,” Symposium: 15 Years of Progress in Radar Altimetry, Venice, Italy, 2006.
Rodriguez E., D. Moller, “Retrieving High Precision River Stages and Slopes From Space,” American Geophysical Union Fall Meeting Abstract, 2005.
Moller D., B. Pollard, E. Rodriguez, “Coastline Monitoring from a Spaceborne Vector-ATI Radar: A Mission Concept,” 2002 AIRSAR Earth Science and Application Workshop, Pasadena, CA 2002.
Moller D., Y. Lou, A. Chu, T.Miller, “PacRim II: A Review of AirSAR Operations and System Performance,” Proc. International Geoscience and Remote Sensing Conference, Sydney, Australia, 2001.
Dr. Yi Chao
Dr. Yi Chao is a Principal Scientist at Remote Sensing Solutions, Inc. He received both the M.A. and Ph.D. degrees in Atmospheric and Oceanic Sciences from Princeton University, and the B.S. degree from University of Science and Technology of China. Since joining RSS, Dr. Chao has continued his development of data assimilation and forecasting capabilities within the Regional Ocean Modeling System (ROMS). Prior to joining RSS, Dr. Chao was a Principal Scientist at NASA Jet Propulsion Laboratory, where he was involved in numerous ocean remote-sensing and science projects. He was the Project Scientist for the Aquarius project developing the first NASA satellite mission to measure ocean salinity from space. He also took several management positions at JPL ranging from Group Supervisor to Section Manager. Dr. Chao is also affiliated with Joint Institute for Regional Earth System Science and Engineering at University of California of Los Angeles and Seatrec, Inc.
Selected Peer-reviewed Publications
Schoch, G. Carl, Yi Chao, Francois Colas, John Farrara, Molly McCammon, Peter Olsson, Gaurav Singhal. “An Ocean Observing and Prediction Experiment in Prince William Sound, Alaska,” Bull. Amer. Meteor. Soc., 92, 997-1007. doi: 10.1175/2011BAMS3023.1, 2011.
- Carl Schoch, and Yi Chao. “Ocean Observing System Demonstrated in Alaska,” EOS, Transactions, American Geophysical Union, Vol. 91, No. 20, 181-182, 2010.
Chao, Y., Z. Li, J. D. Farrara, and P. Huang. “Blended sea surface temperatures from multiple satellites and in-situ observations for coastal oceans,” Journal of Atmospheric and Oceanic Technology, 26 (7), 1435-1446, 10.1175/2009JTECHO592.1, 2009.
Chao, Y., Z. Li, J. Farrara, J. C. McWilliams, J. Bellingham, X. Capet, F. Chavez, J.-K. Choi, R. Davis, J. Doyle, D. Frantaoni, P. P. Li, P. Marchesiello, M. A. Moline, J. Paduan, S. Ramp. “Development, implementation and evaluation of a data-assimilative ocean forecasting system off the central California coast,” <9>Deep-Sea Research II, 56, 100-126, doi:10.1016/j.dsr2.2008.08.011, 2009.
Li, Z., Y. Chao, J.C. McWilliams, and K. Ide. “A Three-Dimensional Variational Data Assimilation Scheme for the Regional Ocean Modeling System,” Journal of Atmospheric and Oceanic Technology, 25, 2074-2090, 2009.
Lagerloef, G., F.R. Colomb, D. Le Vine, F. Wentz, S. Yueh, C. Ruf, J. Lilly, J. Gunn, Yi Chao, A. deCharon, G. Feldman, and C. Swift. “Aquarius/SAC-D Mission: Designed to meet the salinity remote sensing challenge,” Oceanography, 21, 68-81, 2008.
Chao, Yi, Zhijin Li, John D. Farrara, Mark A. Moline, Oscar M. E. Schofield, and Sharanya J. Majumdar. “Synergistic applications of autonomous underwater vehicles and the regional ocean modeling system in coastal ocean forecasting,” Limnology and Oceanography, 53, 2251-2263, 2008.
Li, Z., Y. Chao, J. C. McWilliams, and K. Ide. “A three-dimensional variational data assimilation scheme for the Regional Ocean Modeling System: Implementation and basic experiments,” Journal of Geophysical Research (Oceans), 113, C05002, doi:10.1029/2006JC004042, 2008.
Chao, Yi, Z. Li, J.C. Kindle, J.D. Paduan, and F.P. Chavez. “A High-Resolution Surface Vector Wind Product for Coastal Oceans: Blending Satellite Scatterometer Measurements with Regional Mesoscale Atmospheric Model Simulations,” Geophysical Research Letters, 30(1), 1013, doi:10.1029/2002GL015729, 2003.
Chao, Yi, and M.S. Lozier. “Evaluation of North Atlantic property field simulations at 1/6°,” Journal of Physical Oceanography, 31, 3200-3213, 2001.
Chao, Yi, M. Ghil, and J.C. McWilliams. “Pacific Interdecadal Variability in this century’s sea Surface Temperature,” Geophysical Research Letters, 27, 2261-2264, 2000.
Chao, Yi, A. Gangopadhyay, F.O. Bryan, W.R. Holland. “Modeling the Gulf Stream system: How far from reality?” Geophysical Research Letters, 23, 3155-3158, 1996.
Chao, Yi, and L.-L. Fu. “A comparison between the TOPEX/POSEIDON data and a global ocean general circulation model during 1992-93,” Journal of Geophysical Research (Oceans), 101, 14965-24976, 1995.
Chao, Yi, D. Halpern, and C. Perigaud. “Sea surface height variabilities in the tropical Pacific Ocean,” Journal of Geophysical Research (Oceans), 98, 6947-6959, 1993.
Chao, Yi, and S.G.H. Philander. “On the structure of the Southern Oscillation,” Journal of Climate, 6, 450-469, 1993.
Senior Hardware Engineer
Torry Akins is a Senior Hardware Engineer at Remote Sensing Solutions, Inc. He received both his M.S. and B.S. degrees in Electrical Engineering from the University of Kansas.
Since joining RSS, Mr. Akins has developed a 1 GHz Direct Digital Synthesizer (DDS) module and a 3.6 GHz 12 bit data acquisition module. The DDS module supports the generation of multiple linear chirps and/or pulses.Additionally, it supports the application of arbitrary amplitude tapers to its output waveforms. The data acquisition modules can directly capture high bandwidth radar returns. These data are buffered and transferred over a high speed serial link to RSS’s digital receiver. Multiple data acquisition modules can be synchronized to capture the return from a multichannel radar system.
Prior to joining RSS, Mr. Akins worked in the Aviation Department at Garmin International where he led the development of several of Garmin’s transponder products. Before that, he was at the University of Kansas where he worked as a staff engineer at the Center for the Remote Sensing of Ice Sheets (CReSIS). During that time, he developed the waveform generators and data acquisition systems for several airborne and ground based radar systems.
Paden J., T. Akins, D. Dunson, C. Allen, and S. Gogineni, “Ice-sheet bed 3-D tomography,” Journal of Glaciology, Vol. 56, No. 195, 2010.
Gogineni, S., D. Braaten, C. Allen, J. Paden, T. Akins, P. Kanagaratnam, K. Jezek, G. Prescott, G. Jayaraman, V. Ramasami, C. Lewis, and D. Dunson (2007), Polar Radar for Ice Sheet Measurements (PRISM), Remote Sensing of Environment – Special Issue: Cryosphere, 111, 204-211.
Thomas, R., E. Rignot, G. Casassa, P. Kanagaratnam, C. Acuña, T. Akins, H. Brecher, E. Frederick, P. Gogineni, W. Krabill, S. Manizade, H. Ramamoorthy, A. Rivera, R. Russell, J. Sonntag, R. Swift, J. Yungel and J. Zwally, “Accelerated Sea-Level Rise from West Antarctica,” Science, vol. 305, no. 5692, 2004.
Legarsky, J. J., P. Gogineni and T. L. Akins, “Focused synthetic-aperture radar processing of ice-sounder data collected over the Greenland ice sheet,” IEEE Transactions on Geoscience and Remote Sensing, vol. 39, no. 10, pp. 2109-2117, 2001.
Gogineni, S., D. Tammana, D. Braaten, C. Leuschen, T. Akins, J. Legarsky, P. Kanagaratnam, J. Stiles, C. Allen and K. Jezek, “Coherent Radar Ice Thickness Measurements over the Greenland Ice Sheet,” Journal of Geophysical Research (Climate and Physics of the Atmosphere), vol. 106, no. D24, pp. 33,761-33,772, 2001.
Thomas, R., T. Akins, B. Csatho, M. Fahnestock, P. Gogineni, C. Kim and J. Sonntag, “Mass balance of the Greenland ice sheet,” Science, vol. 289, no. 5478, pp. 426-428, 21 July 2000.
Thomas, R. H., W. Abdalati, T. L. Akins, B. M. Csatho, E. B. Frederick, S. P. Gogineni, W. B. Krabill, S. S. Manizade and E. J. Rignot, “Substantial thinning of a major east Greenland outlet glacier,” Geophysical Research Letters, vol. 27, no. 9, pp. 1291-1294, May 2000.
Legarsky, J.J., S.P. Gogineni, P. Kanagaratnam, T.L. Akins, and Y.C Wong, “Ice thickness measurements of the southwest Greenland 2000-m coutour line,” in Proc. Int. Geoscience and Remote Sensing Symp., Hamburg, Germany, June-July 28-2, 1999, pp. 89-91.
Legarsky, J., A. Wong, T. Akins and S. P. Gogineni, “Detection of Hills from Radar Data in Central-Northern Greenland,” correspondence, Journal of Glaciology, vol. 44, no. 146, pp. 182-184, 1998.
- Lohoefener, C. Veeramachaneni, S. Raghunandan, V. Ramasami, J. Paden, T. Akins, P. Kanangaratnam, and S. Gogineni, “Radar sounding of Jacobshavn and other outlet glaciers,” EOS Transactions AGU, vol. 87, no. 52, Fall Meeting Supplement, Abstract C41A-0318, 2006.
- Gogineni, J. Paden, T. Akins, C. Allen, P. Kanagaratnam, D. Braaten, and K. Jezek, “Synthetic aperture radar imaging of ice-bed interface,” EOS Transactions AGU, vol. 87, no. 52, Fall Meeting Supplement, Abstract C14B-06, 2006.
- Gogineni, J. Paden, T. Akins, C. Allen, D. Braaten, and K. Jezek, “Wideband synthetic aperture radar imaging of sub-surface interfaces in glacial ice,” Sixth European Conference on Synthetic Aperture Radar (EUSAR 2006), Dresden, Germany, 16-18 May 2006.
Rink, T., P. Kanagaratnam, D. Braaten, K. Zimmerman, T. Akins, S. P. Gogineni, “A Fine Resolution Radar for Mapping Near-Surface Isochronous Layers,” American Geophysical Union 2005 Fall Meeting, December 5-9, San Francisco, CA, 2005.
Gogineni, S. P., K. Jezek, J. Paden, C. Allen, P. Kanagaratnam, T. Akins and D. Braaten, “Radar Imaging and Sounding of Polar Ice Sheets,” URSI General Assembly, October 23-29, New Delhi, India, 2005.
Paden, J., T. Akins, P. Kanagaratnam, D. Dunson, C. Lewis, T. Chan, C. Allen, R. Parthasarathy, K. Jezek, and S. P. Gogineni, “Wideband radars for imaging the bed and mapping internal layers,” West Antarctic Ice Sheet Workshop, September 28 – October 1, 2005, Sterling, Virginia.
Gogineni, S., P. Kanagaratnam, R. Parthasarathy, T. L. Akins, D. Braaten and K. Jezek, “Ultra Wideband Radar Mapping of Near Surface Internal Layers: Systems, Results and Analysis,” American Geophysical Union Fall Meeting, December 13-17, San Francisco, CA, 2004.
Paden, J., S. Mozaffar, D. Dunson, C. Allen, S. Gogineni and T. Akins, “Multiband multistatic synthetic aperture radar for measuring ice sheet basal conditions,” IGARSS’04, September 21-24, Anchorage, Alaska, 2004.
Parthasarathy, R., P. Kanagaratnam, T. Akins, S. Gogineni and K. Jezek, “A compact high-resolution radar for determining snow accumulation rates,” IGARSS’04, September 21-24, Anchorage, Alaska, 2004.
Kuchikulla, A., S. P. Gogineni, P. Kanagaratnam and T. L. Akins, “A wideband radar depth sounder for measuring the thickness of glacial ice,” IGARSS’04, September 21-24, Anchorage, Alaska, 2004.
Gogineni, S., P. Kanagaratnam, D. Braaten, T. Akins and B. Parthasarathy, “High-resolution mapping of near-surface internal snow layers with a wideband radar,” Tenth International Conference on Ground Penetrating Radar, June 21-24, Delft, The Netherlands, 2004.
Parthasarathy, R., P. Kanagaratnam, T. Akins, J. Wuite, D. Braaten, K. Jezek and S. Gogineni, “Fine-Resolution Mapping of Near-Surface Internal Layers,” American Geophysical Union Fall Meeting, December 8-12, San Francisco, CA, 2003.
Moussessian, A., R. L. Jordan, E. Rodriguez, A. Safaeinili, T. L. Akins, W. N. Edelstein, Y. Kim and S. P. Gogineni, “A New Coherent Radar for Ice Sounding in Greenland,” IGARSS 2000 Digest, 00CH37120, Honolulu, July 24-28, pp. 2570-2572, 2000.
Legarsky, J., P. Gogineni, P. Kanagaratnam, T. Akins and A. Wong, “Ice Thickness Measurements of the Southwest Greenland 2000-m Contour Line,” IGARSS’99, June 28 – July 2, Hamburg, Germany, pp. 89-91, 1999.
Kanagaratnam, P., P. Gogineni, J. Legarsky and T. Akins, “High-Resolution Monitoring of Internal Layers at NGRIP,” IGARSS’99, June 28 – July 2, Hamburg, Germany, pp. 95-97, 1999.
Akins, T., J. Legarsky, S. P. Gogineni and K. Jezek (presented by C. Allen), “An Improved Radio Echo Sounder for the Measurement of the Greenland Ice Sheet Thickness,” Proceedings of Fifth International Conference on Remote Sensing for Marine and Coastal Environments, San Diego, CA, October 5-7, pp. II-419-II-425, 1998.
Gogineni, S., R. Thomas, J. Legarsky and T. Akins, “An Airborne Radio Echo Sounder for the Measurement of the Greenland Ice Sheet Thickness,” Proceedings of Third International Airborne Remote Sensing Conference, vol. 2, July 7-10, Copenhagen, Denmark, pp. 545-550 (received Best of Session Award), 1997.
Dr. John Farrara
Dr. John D. Farrara is a scientist at Remote Sensing Solutions, Inc. He received the B.S., M.A. and Ph.D. degrees in Atmospheric Sciences from the University of California, Los Angeles (UCLA). Since joining RSS, Dr. Farrara has contributed to the development of data assimilation and forecasting capabilities within the Regional Ocean Modeling System (ROMS). Both in-situ and remotely sensed data can be assimilated into ROMS through a multi-scale 3-dimensional variational method in order to enable hindcasts and near real-time nowcasts and forecasts. Configurations of the ROMS-based system have been implemented for data assimilation and forecasting off the coasts of California and Alaska as well as the Gulf of Mexico. Prior to joining RSS, Dr. Farrara was a Researcher at the Joint Institute for Earth System Science and Engineering (JIFRESSE) at UCLA, where he was involved in several ocean modeling and atmospheric science projects.
Dr. Guy J-P. Schumann
Dr. Guy Schumann is a Scientist at Remote Sensing Solutions, Inc. He received both the M.Sc.(Remote Sensing) and Ph.D. (Geography) degrees from the University of Dundee (Scotland). Dr. Schumann has more than 10 years of experience in the field of remote sensing data integration with hydrodynamic modeling and particularly radar remote sensing and its use in flood model calibration and validation. He has done extensive work on flood inundation mapping from SAR and integration of uncertainties. His recent research focuses on large-scale flood inundation modeling and integration with remotely sensed data. Most of his current work and projects are NASA- and JPL-funded projects focusing on simulating river hydrodynamics and floodplain inundation, particularly as part of pre-mission projects for the upcoming NASA/CNES SWOT (Surface Water Ocean Topography) mission and the NASA ROSES (Research Opportunities in Space and Earth Sciences) program. Dr Schumann is also involved in the Interoperability Program activities of the Open Geospatial Consortium (OGC). Dr. Schumann is currently also a Visiting Research Fellow at Geographical Sciences, University of Bristol. Prior to joining Remote Sensing Solutions Inc., he was a GWR Fellow and lecturer in Hydrology at the School of Geographical Sciences, University of Bristol (England) from October 2007 to March 2012. After that, Dr. Schumann took up a Postdoctoral Research Scholar position at the NASA Jet Propulsion Laboratory (JPL), California Institute of Technology. In September 2014, he moved to UCLA as an Associate Researcher for one year before joining Remote Sensing Solutions Inc. in September 2015.
Dr. David Fratantoni