Coordinated Studies of the Middle and Upper Atmosphere Structure: Results and Lessons-learned from the NASA TIMED Mission

Details Coordinated Studies of the Middle and Upper Atmosphere Structure: Results and Lessons-learned from the NASA TIMED Mission Coordinated Studies of the Middle and Upper Atmosphere Structure: Results and Lessons-learned from the NASA TIMED Mission

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusmsa33a..01y&link_type=abstract

American Geophysical Union, Spring Meeting 2009, abstract #SA33A-01

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0340 Middle Atmosphere: Composition And Chemistry, 0341 Middle Atmosphere: Constituent Transport And Chemistry (3334), 0342 Middle Atmosphere: Energy Deposition (3334), 0350 Pressure, Density, And Temperature, 0358 Thermosphere: Energy Deposition (3369)

Scientific paper

The terrestrial middle and upper atmosphere is at the interface between interplanetary and lower-atmospheric processes and plays a uniquely important role in the solar-terrestrial system. The NASA Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics (TIMED) mission is dedicated to the study of the basic structure of this interface region, its spatial and temporal variability and processes responsible for the variability. For the past seven years TIMED and its upper atmosphere research colleague have transformed our understanding of this gateway region of near-Earth space by successfully characterizing its dynamics, energetics, thermal, and composition structures. TIMED, together with its groundbased partners and other domestic and international space programs, has allowed the Heliophysics research community to observe new aspects of the cause-and-effect chains linking the Sun, heliosphere, and magnetosphere to the Earth's upper and lower atmospheres. In addition, the approved extension of TIMED operations through 2012 would provide an observational record spanning an 11-year solar cycle. Most importantly, these extended observations would also enable a quantitative understanding of the external and internal forces that drive the middle and upper atmosphere and provide the ability to address processes related to anthropogenic climate change in this gateway region. In this paper, we will present highlights of TIMED observational results, summarize our current state of knowledge, and discuss issues related to on-going and future system studies of terrestrial middle and upper atmosphere, especially in the context of quantitative understanding of sources of atmosphere variability and predictive capability of long-term climate change.

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