Name
Title | ||
|---|---|---|
Calibration and Validation of the InfraRed Atmospheric Sounder Onboard the FY3B Satellite |
Abstract | ||
|---|---|---|
InfraRed Atmospheric Sounder (IRAS) instruments were successfully launched onboard the FengYun-3A (FY3A) and FengYun-3B (FY3B) satellites on May 27, 2008, and November 5, 2010, respectively. They aim at providing multichannel radiances within the spectral range of visible to infrared (IR) wavelengths for many environmental applications, including data assimilation and retrievals of global atmospheric temperature and humidity profiles. However, the velocity of the filter wheel of the first IRAS onboard FY3A is unstable and, therefore, induced a discontinuity in the measurement. The IRAS onboard FY3B works well in normal and stable operational mode since its launch without any anomaly. A variety of postlaunch calibration/validation tasks are conducted using on-orbit data during a period of three months. This paper presents on-orbit verification of IRAS instrument performance, including long-term trends of the space and warm calibration counts and noise equivalent delta radiance. The Earth scenes observed simultaneously by IRAS and Meteorological Operational Satellite Programme (METOP)/Infrared Atmospheric Sounding Interferometer were obtained and compared to demonstrate a close similarity between the two measurements. Furthermore, the IR channel observations from FY3B/IRAS are compared with those from National Oceanic and Atmospheric Administration-19/High Resolution Infrared Radiation Sounder (HIRS) equivalent channels and simulations from a radiative transfer model. The results show that some of IRAS IR channels perform very well, particularly for channels 1-10, 15, 19, and 20, compared to those of HIRS. Several channels, such as 13, 16, and 18, however, display some large biases. The causes of these increased biases are still under investigation. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/TGRS.2012.2204268 | Geoscience and Remote Sensing, IEEE Transactions |
Keywords | Field | DocType |
atmospheric measuring apparatus,FengYun 3,atmospheric humidity,calibration,InfraRed Atmospheric Sounder (IRAS),Calibration validation,FengYun-3A satellite,visible wavelength,space calibration count,postlaunch calibration task,on-orbit data,global atmospheric temperature profile,environmental applications,Infrared Atmospheric Sounding Interferometer,on-orbit calibration,postlaunch validation task,fengyun 3,data assimilation,global atmospheric humidity profile,warm calibration count,radiative transfer model,infrared wavelength,National Oceanic Administration,National Atmospheric Administration,AD 2008 05 27,calibration validation,IRAS IR channels,FY3B satellite,Meteorological Operational Satellite Programme,infrared atmospheric sounder (iras),AD 2010 11 05,IR channel observations,filter wheel velocity,IRAS instruments,High Resolution Infrared Radiation Sounder,FengYun-3B satellite,atmospheric temperature | Infrared atmospheric sounding interferometer,Meteorology,Satellite,Remote sensing,Atmospheric temperature,Atmospheric radiative transfer codes,Data assimilation,Infrared,Radiance,Calibration,Mathematics | Journal |
Volume | Issue | ISSN |
50 | 12 | 0196-2892 |
Citations | PageRank | References |
1 | 0.63 | 0 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Chengli Qi | 1 | 1 | 1.30 |
| Yong Chen | 2 | 3 | 7.12 |
| Hui Liu | 3 | 1 | 0.96 |
| Chunqiang Wu | 4 | 1 | 1.30 |
| Dekui Yin | 5 | 1 | 0.63 |