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Abstract:
The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on NASA’s TIMED (Thermosphere Ionosphere Mesosphere Energetics Dynamics) satellite measure vertical profiles of kinetic temperature, pressure, geopotential height and volume mixing ratios of minor species such as CO2, H2O (two important greenhouse gases) since January 2001. With its two-solar-cycle record, we can quantify the long term changes of global temperature, CO2, and H2O and distinguish their solar cycle variations. In this talk, we will review the SABER measured linear trends of temperature, CO2 and H2O. Global temperature in the stratosphere and mesosphere has been cooling due to anthropogenic greenhouse gas, i.e., CO2. CO2 and H2O have also been observed to increase due to anthropogenic CO2 and CH4 emission and warming tropopause. Meanwhile, we will discuss the lessons we learnt while calculating the trends from SABER.
