Measurements and Applications
Atmospheric temperature profiles and data on cloud parameters, humidity soundings, water vapour, total ozone content, and surface temperatures. Same as HIRS/3, with 10 km IFOV.
Full Name
High Resolution Infra-red Sounder/4
Status
Operational
Instrument Agencies
Maturity
High Heritage - Operational
Instrument Type
Atmospheric temperature and humidity sounders 
Geometry
Cross-track scanning
Instrument Technology
Narrow-band channel IR radiometer
Sampling
Imaging
Data Access
Open Access
Data Format
Native
Resolution
20.3 km
[Best Resolution: 20300m]
Swath
2240 km
[Max Swath: 2240 km]
Waveband
VIS - TIR: 0.69 - 14.95 µm (20 channels)
| VIS (~0.40 µm - ~0.75 µm) |
| NIR (~0.75 µm - ~1.3 µm) |
| SWIR (~1.3 µm - ~3.0 µm) |
| MWIR (~3.0 µm - ~6.0 µm) |
| TIR (~6.0 µm - ~15.0 µm) |
NOAA-18 - National Oceanic and Atmospheric Administration - 18 (2005 - 2025) |
Metop-A - Meteorological Operational Polar Satellite - A (2006 - 2021) |
| NOAA-19 - National Oceanic and Atmospheric Administration - 19 (2009 - 2025) |
| Metop-B - Meteorological Operational Polar Satellite - B (2012 - 2027) |