Measurements and Applications
Measures tropospheric moisture and temperature, column integrated contents of ozone, carbon monoxide, methane, nitrous oxide and other minor gases which affect tropospheric chemistry. Also measures sea surface and land temperature.
Full Name
Infrared Atmospheric Sounding Interferometer
Status
Operational
Instrument Agencies
Maturity
Instrument Type
Atmospheric temperature and humidity sounders 
and Atmospheric chemistry
Geometry
Cross-track scanning
Instrument Technology
Medium-resolution IR spectrometer
Sampling
Sounding
Data Access
Open Access
Data Format
Native and BUFR
Resolution
Vertical: 1 - 30 km, Horizontal: 25 km
[Best Resolution: 25000m]
Swath
2052 km
[Max Swath: 2052 km]
Accuracy
Temperature: 0.5 - 2 K, specific humidity: 0.1 - 0.3 g/kg, ozone, trace gas profile: 10%
Waveband
MWIR - TIR: 645 to 2760 cm-1 or 3.62 - 15.5 µm (8461 spectral samples)
| MWIR (~3.0 µm - ~6.0 µm) |
| TIR (~6.0 µm - ~15.0 µm) |
Metop-A - Meteorological Operational Polar Satellite - A (2006 - 2021) |
Metop-B - Meteorological Operational Polar Satellite - B (2012 - 2027) |
| Metop-C - Meteorological Operational Polar Satellite - C (2018 - 2027) |
| Category | Parameter |
| Aerosols | Volcanic ash |
| Atmospheric Humidity Fields | Atmospheric specific humidity (LT, HT, LS, HS&M, TC)  |
| Atmospheric Temperature Fields | Atmospheric temperature (LT, HT, LS, HS&M) |
| Atmospheric stability index |
| Atmospheric Winds | Wind profile (vertical) |
| Cloud type, amount and cloud top temperature | Cloud cover |
| Cloud top height |
| Cloud top temperature |
| Ozone | O3 Mole Fraction |
| Radiation budget | Long-wave Earth surface emissivity |
| Upwelling (Outgoing) spectral radiance at TOA |
| Surface temperature (land) | Land surface temperature |
| Surface temperature (ocean) | Sea surface temperature |
| Trace gases (excluding ozone) | CH4 Mole Fraction |
| N2O (TC) |
| HNO3 (LT, HT, LS, TC) |
| CO2 Total Column |
| CO Total Column |
| SO2 Total Column |