TOVS Product Information
TOVS Level 2
ATOVS Level 2
The AAPP homepage can be found at www.eumetsat.de
-> Programmes under Development -> EPS -> AAPP.
Detailed information about the IAPP
package are published in
The generation of daily maps of total column water vapor content (level 3 product) is in preparation. This will be an interpolated product from the total column water vapor content.
Both, TOVS and ATOVS are satellite borne vertical sounding instruments which consist of a radiometer for the visible to the infrared spectrum and a microwave module. Vertical profiles of temperature and humidity can be derived from the measured radiances.
TOVS was/is flown onboard NOAA 10 to NOAA 14. It is made up of three instruments: the High Resolution Infrared Radiation Sounder (HIRS), the Microwave Sounding Unit (MSU), and the Stratospheric Sounding Unit (SSU). Detailed TOVS instrument information are available at the NOAA Polar Orbiter Users Guide
The Advanced TOVS (ATOVS) is flown on the NOAA satellites beginning with NOAA15 and is composed of three instruments as well: The next generation of HIRS (HIRS/3), the Advanced Microwave Sounding Unit AMSU-A (based on former MSU), and the Advanced Microwave Sounding Unit AMSU-B. Detailed ATOVS instrument information can be found in the NOAA KLM Polar Orbiter Users Guide
Quality checks are made on a monthly basis for the vertical profiles derived by TOVS and ATOVS. There are compared with ECMWF analysis fields. Please look at a typical example for temperature and dewpoint temperature comparisons for the TOVS system.
Besides the routinely comparisons with ECMWF fields, case study comparisons against several other data sources (radiosondes, other satellites, LIDAR) are under way.
If you are interested in data please contact email@example.com. There might be restrictions if the required data amount is very high, but please contact us. An additional note: Our data is restricted to passes the sensor makes over Europe, and as such, global data is not available.