Before joining NOAA in 1999, Changyong was a senior scientist in remote
sensing with the System Engineering and Technology Group at Lockheed
Martin, NASA Stennis Space Center, where he supported a number of NASA
projects, from hyperspectral spaceborne/airborne instrument preflight
calibration, inflight radiometric and spectral calibration, validation and
verification, to advanced remote sensing applications. He was an Assistant
Professor and laboratory manager at Southern Illinois University in the
early 1990s. Changyong received his Ph.D. degree in Geography specializing
in remote sensing and geographic information systems from Louisiana State
University in 1992. He received his Bachelor of Science degree in
geography from Peking (Beijing) University in 1982.
Cao, C., E. Vermote, X. Xiong, 2009, Using AVHRR Lunar Observations for
NDVI Long-term Climate Change Detection, submitted to Journal of
Shi, L., J. Bates, and C. Cao, 2009, Scene temperature dependent HIRS
intersatellite biases, Journal of Atmospheric and Oceanic Technology, J.
Atmos. Oceanic Technol., 25, 2219-2229.
Iacovazzi, R., C. Cao, and S. Boukabara, 2009, Analysis of POES NOAA-14
MSU and NOAA-15 AMSU-A relative measurement biases for climate change
detection, Journal of Geophysical Research, In press.
Cao, C., X. Xiong, A. Wu, and X. Wu, 2008, Assessing the consistency of
AVHRR and MODIS L1B reflectance for generating fundamental climate data
records, Journal of Geophysical Research, 1, 113, D09114,
Iacovazzi, R., and C. Cao, 2008, Reducing Uncertainties of SNO-estimated
AMSU-A Brightness Temperature Biases at Surface-influenced Channels,
Accepted by the Journal of Atmospheric and Oceanic Technology, Journal
of Atmospheric and Oceanic Technology, 25, 2008, DOI:
Xiong, X., A. Wu, and C. Cao, On-orbit calibration and inter-comparison
of Terra and Aqua MODIS surface temperature spectral bands,
International Journal of Remote Sensing, 29, Issue 17 & 18 2008,
pages 5347 – 5359.
Zhao, X., I. Laszlo, W. Guo, A. Heidinger, C. Cao, A. Jelenak, D.
Tarpley, J. Sullivan, 2008, Study of Long-term Trend in Aerosol Optical
Thickness Observed from Operational AVHRR Satellite Instrument,
Journal of Geophysical Research, 113, D07201,
Wang, L., C. Cao, and M. Goldberg, 2008, Inter-calibration of GOES-11
and GOES-12 Water Vapor Channels with MetOp/IASI Hyperspectral
Measurements, Journal of Atmospheric and Oceanic Technology, in press.
Wu, A., X. Xiong, and C. Cao, 2008, Tracking the calibration stability
and consistency of the 3.7, 11.0 and 12.0µm channels of the NOAA-KLM
AVHRR with MODIS, International Journal of Remote Sensing, in press.
Wu, A., X. Xiong, and C. Cao, 2008, Terra and Aqua MODIS inter-
comparison of the reflective solar bands using AVHRR aboard the NOAA-KLM
series of satellites, International Journal of Remote Sensing, In press.
Wang, X. Wu, Y. Li, M. Goldberg , S. Sohn, and, C. Cao, 2008, Comparison
of AIRS and IASI Radiances Using GOES Imagers as Transfer Radiometers
towards Climate Data Records, submitted to JAMC.
Xiong, X., A. Wu and C. Cao, 2008, On-Orbit Calibration and Inter-
Comparison of Terra and Aqua MODIS Surface Temperature Spectral Bands,
International Journal of Remote Sensing, in press.
Cao, C., M. Goldberg, and L. Wang, 2008, Spectral Bias Estimation of
Historical HIRS using IASI Observations for Improved Fundamental Climate
Data Records, Journal of Atmospheric and Oceanic Technology, in press.
Wang, L, and C. Cao, 2008, On-Orbit Calibration Assessment of AVHRR
Longwave Channels on MetOp-A using IASI, IEEE Transactions on Geoscience
and Remote Sensing, 46, No. 11, November 2008.
Iacovazzi, R., and C. Cao, 2007, Quantifying EOS-Aqua and NOAA POES
AMSU-A Brightness Temperature Biases for Weather and Climate
Applications Utilizing the SNO Method, Journal of Atmospheric and
Oceanic Technology, DOI: 10.1175/JTECH2095.1, November, 2007.
Cao, C., K. Jarva, and P. Ciren, 2007, An improved algorithm for the
operational calibration of HIRS. J. Atmos. Oceanic Technol., 24, 169-
Wang, L., C. Cao, and P. Ciren, 2007: Assessing NOAA-16 HIRS Radiance
Accuracy Using Simultaneous Nadir Overpass Observations from AIRS. J.
Atmos. Oceanic Technol., 24, No. 9, September 2007, 1546-1561.
Zou, C., M. Goldberg, Z. Cheng, N. Grody, J. Sullivan, C. Cao, and D.
Tarpley, 2006, Recalibration of Microwave Sounding Unit for Climate
Studies Using Simultaneous Nadir Overpasses, Journal of Geophysical
Research, 111, D19114, doi:10.1029/2005JD006798. (published Oct. 14,
Cao, C., P. Ciren, M. Goldberg, F. Weng, and C. Zou, 2005, Simultaneous
Nadir Overpasses for NOAA-6 to NOAA-17 satellites from 1980 to 2003 for
the intersatellite calibration of radiometers, NOAA Technical Report.
Cao, C., H. Xu, J. Sullivan, L. McMillin, P. Ciren, and Y. Hou, 2005,
Intersatellite radiance biases for the High Resolution Infrared
Radiation Sounders (HIRS) onboard NOAA-15, -16, and -17 from
simultaneous nadir observations. Journal of Atmospheric and Oceanic
Technology, 22, No. 4, pp. 381-395.
Ignatov, A., C. Cao, J. Sullivan, X. Wu, R. Levin, R. Galvin, 2005, Use
of inflight space count measurements to constrain the calibration offset
in the AVHRR solar reflectance bands, Journal of Atmospheric and Oceanic
Technology, 22, pp.180-200.
Cao, C., J. Sullivan, E. Maturi, and J. Sapper, 2004, The effect of
orbit drift on the calibration of the 3.7um channel of the AVHRR onboard
NOAA-14 and its impact on night-time sea surface temperature retrievals
International Journal of Remote Sensing, 25, No. 5,
Cao, C., M. Weinreb, and H. Xu, 2004, Predicting simultaneous nadir
overpasses among polar-orbiting meteorological satellites for the
intersatellite calibration of radiometers (abstract).
Journal of Atmospheric and Oceanic Technology, 21,
April 2004, pp. 537-542.
Rao, C.R.N., C. Cao, and N. Zhang, 2003, Inter-calibration of the MODIS
and ATSR-2, International Journal of Remote Sensing, 24, No. 9,
Heidinger, A., C. Cao, and J. Sullivan, 2002, Using MODIS to calibrate
AVHRR reflectance channels, Journal of Geophysical Research, 107,
No. D23, 4702.
Cao, C., M. Weinreb, and J. Sullivan, 2001, Solar Contamination Effects
on the Infrared Channels of the AVHRR, Journal of Geophysical Research,
106, No. D24, pp. 33463-33469.