Snpp CrIS Instrumental Status and Raw Data Record Quality Since the Mission

Friday, 19 December 2014
Xin Jin1, Yong Han2, Ninghai Sun1, Fuzhong Weng3, Likun Wang4, Yong Chen4 and Denis A Tremblay5, (1)Earth Resources Technology, Greenbelt, MD, United States, (2)NOAA College Park - NOAA/NESDIS/STAR, College Park, MD, United States, (3)NOAA, Camp Springs, MD, United States, (4)University of Maryland College Park, College Park, MD, United States, (5)Science Data Processing Inc.,, Laurel, MD, United States
The SNPP CrIS (cross-track infrared sounder) has been in service for more than two years. As the first operational interferometric hyper-spectral sounder onboard the new-generation polar-orbit meteorological satellite, CrIS’s instrumental performance and data quality are widely concerned. NOAA/NESDIS/STAR CrIS Cal/Val team have been actively involved since the beginning of the mission. An intact record of the CrIS instrumental performance and raw data record (RDR) has been established. In this presentation, the continuous records of some critical indicators such as noise, gain, laser wavelength drifting and many other parameters related to the internal thermal status, are presented. It is found that the hardware performance is extremely stable in the past two years and the degradation is very small. These features make CrIS a great candidate for long-term climate studies.

Moreover, the completeness of RDR data is another advantage of taking CrIS for climate studies. NOAA/NESDIS/STAR has recorded all of the CrIS RDR data since the launch and has been dedicated to improving the data quality.