The ISCCP_TOVS_NAT data set is a daily, global description of the ozone, temperature and humidity distributions obtained from the analysis of data from the TIROS Operational Vertical Sounder (TOVS) system. TOVS Data Set contents include atmosphere and surface data including temperature structure, water, and ozone abundances obtained from the TIROS Operational Vertical Sounding Product and ... supplemented by two climatologies.
The ISCCP_TOVS_NAT data set contains information concerning the atmospheric temperature and humidity profiles and the ozone column abundance. This data set is composed of 3 types of data files, CLIM MONTHLY which contains the monthly climatological data obtained from balloon observations, TOVS MONTHLY which contains the monthly climatological data computed from the daily TOVS values, and TOVS DAILY which contains the daily composite of the TOVS Sounding Product.
The data were collected on a global equal-area grid with the cell area equivalent to 2.5 deg. latitude/longitude at the equator. The grid begins at the South Pole with the intersection of the Greenwich meridian (0 deg. longitude) and the South Pole as a cell corner.
The TIROS Operational Vertical Sounder (TOVS) system flew on the NOAA Operational Polar Orbiting Satellite series. The measurements from the High Resolution Infrared Radiation Sounder (HIRS/2), the Stratospheric Sounding Unit (SSU), and the Microwave Sounding Unit (MSU) were processed by NOAA to produce the TOVS Sounding Product.