Ozone Detection and Monitoring A Satellite Tutorial By: Gabriel Langbauer

NASA Presents TOMS!!! Total Ozone Mapping SpectrometerTotal Ozone Mapping Spectrometer Launched June 29, 1996 aboard the satellite “Earth-Probe”Launched June 29, 1996 aboard the satellite “Earth-Probe” Monitors Ozone over a column from the surface up to the top of the atmosphereMonitors Ozone over a column from the surface up to the top of the atmosphere

1 D.U. corresponds to the amount of gas at STP that forms a layer.001 cm thick1 D.U. corresponds to the amount of gas at STP that forms a layer.001 cm thick

How Do They Do It? TOMS measures total ozone by observing both incoming solar energy and backscattered near- ultraviolet radiation at six wavelengths:TOMS measures total ozone by observing both incoming solar energy and backscattered near- ultraviolet radiation at six wavelengths: , , , , , and micrometers

By comparing the amount of backscattered radiation to observations of incoming solar energy at identical wavelengths, one can calculate the Earth's albedoBy comparing the amount of backscattered radiation to observations of incoming solar energy at identical wavelengths, one can calculate the Earth's albedo Changes in albedo at the selected wavelengths can be used to derive the amount of ozone above the surface.Changes in albedo at the selected wavelengths can be used to derive the amount of ozone above the surface. The ozone is related to albedo, latitude, surface pressure, and area coveredThe ozone is related to albedo, latitude, surface pressure, and area covered

Coverage Makes 35 measurements every 8 seconds (approximately 1 measurement every 0.2s)Makes 35 measurements every 8 seconds (approximately 1 measurement every 0.2s) Each measurement covers 50km on the groundEach measurement covers 50km on the ground 200,000 daily measurements cover every single spot on the Earth except areas near one of the poles, where the Sun remains close to or below the horizon during the entire 24-hour period.200,000 daily measurements cover every single spot on the Earth except areas near one of the poles, where the Sun remains close to or below the horizon during the entire 24-hour period.

Satellite Specifications Orbits at 739km AGLOrbits at 739km AGL Japanese ADEOS orbits at 800kmJapanese ADEOS orbits at 800km Accurate within 2% of Total OzoneAccurate within 2% of Total Ozone Weight of 33.1 KGWeight of 33.1 KG Data Rate of 700bpsData Rate of 700bps Power of 25 WattsPower of 25 Watts Orbital period of 99 minutes 42 secondsOrbital period of 99 minutes 42 seconds

Questions?!?!?!