Roy Johnson

Staff, NASA Ames Research Center
Atmospheric Science Branch (SGG)
Business Email: roy.r.johnson@nasa.gov
Business Phone: (650) 604-5933

Bio:

Roy Johnson has been working in Ames Earth Science as an engineer since 2005 working with airborne sunphotometers (AATS-14 and 4STAR) and other airborne instrumentation.   He began his NASA career at Goddard Space Flight center in 1990 as a cooperative education student supporting focal plane array development for astronomy applications.  After graduating with an engineering degree from Embry-Riddle Aeronautical University in 1993 Roy was hired at Goddard and continued working on infrared detector system electronics until 1997 when he transferred to Ames Research Center and worked in the Infrared Detector Lab supporting detector testing.  In 2005 an opportunity to transition into airborne instrumentation opened up in the Earth Science division and he has had the pleasure of providing engineering support for many field campaigns and aircraft in addition to prototype instrument projects and detector instrument prototype development for astrophysics.

CV:

Co-Authored Publications: 

• Livingston, J. M., et al. (2014), Comparison of MODIS 3 km and 10 km resolution aerosol optical depth retrievals over land with airborne sunphotometer measurements during ARCTAS summer 2008, Atmos. Chem. Phys., 14, 2015-2038, doi:10.5194/acp-14-2015-2014.
• Segal-Rozenhaimer, M., et al. (2014), Tracking elevated pollution layers with a newly developed hyperspectral Sun/Sky spectrometer (4STAR): Results from the TCAP 2012 and 2013 campaigns, J. Geophys. Res., 119, JD020884, doi:10.1002/.
• Dunagan, S. E., et al. (2013), Spectrometer for Sky-Scanning Sun-Tracking Atmospheric Research (4STAR): Instrument Technology, Remote Sens., 5, 3872-3895, doi:10.3390/rs5083872.
• Shinozuka, Y., et al. (2013), Hyperspectral aerosol optical depths from TCAP flights, J. Geophys. Res., 118, 12,180-12,194, doi:10.1002/2013JD020596.
• Dunagan, S. E., et al. (2011), 4STAR Spectrometer for Sky-Scanning Sun-Tracking Atmospheric Research: Instrument Technology Development, 34th International Symposium on Remote Sensing of the Environment, Sydney, Australia, 10-15 Apr 2011.
• Schmid, B., et al. (2011), 4STAR Spectrometer for Sky-scanning Sun-tracking Atmospheric Research: Results from Test-flight Series, Paper A14E-05, American Geophysical Union Fall Meeting, San Francisco, 5-9 December 2011.
• Shinozuka, Y., et al. (2011), Airborne observation of aerosol optical depth during ARCTAS: vertical profiles, inter-comparison and fine-mode fraction, Atmos. Chem. Phys., 11, 3673-3688, doi:10.5194/acp-11-3673-2011.
• Livingston, J. M., et al. (2009), Comparison of aerosol optical depths from the Ozone Monitoring Instrument (OMI) on Aura with results from airborne sunphotometry, other space and ground measurements during MILAGRO/INTEX-B, Atmos. Chem. Phys., 9, 6743-6765, doi:10.5194/acp-9-6743-2009.
• Redemann, J., et al. (2009), Testing aerosol properties in MODIS Collection 4 and 5 using airborne sunphotometer observations in INTEX-B/MILAGRO, Atmos. Chem. Phys., 9, 8159-8172, doi:10.5194/acp-9-8159-2009.
• Schmid, B., et al. (2009), Validation of aerosol extinction and water vapor profiles from routine Atmospheric Radiation Measurement Program Climate Research Facility measurements, J. Geophys. Res., 114, D22207, doi:10.1029/2009JD012682.