Total Ozone Mapping Spectrometer (TOMS)

is an instrument, first flown on NASA's Nimbus-7 satellite, whose primary function :is to monitor global ozone. TOMS has been delivering ozone data since 1979, providing high-resolution mapping of total ozone, from the ground to the top of the atmosphere, on a daily bas:is. TOMS provided the first maps of the ozone hole and continues to monitor th:is phenomenon.