Measurements and Applications
Measurements: High-spectral-resolution thermal infrared radiance spectra of the Earth–atmosphere system
Applications: Atmospheric profiling, Trace-gas retrieval, NWP data assimilation, Climate monitoring
Full Name
Hyperspectral Infrared Atmospheric Sounder-2
Status
Operational
Instrument Agencies
Maturity
Instrument Type
Atmospheric temperature and humidity sounders 
Geometry
Cross-track scanning
Instrument Technology
High-resolution nadir-scanning IR spectrometer
Sampling
Sounding
Data Access
Open Access
Data Format
L-1 data: HDF 5.0
Resolution
1 degree (14 km at s.s.p.) IFOV
[Best Resolution: 14000m]
Swath
2200km
[Max Swath: 2200 km]
Accuracy
Radiometric Calibration Accuracy: LWIR: 0.3 K; MWIR1: 0.5 K; MWIR2: 0.7 K
Waveband
Improved after HIRAS flown on FY-3D (denser sampling and uninterrupted spectral range).