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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=plaintext01>Dear Colleagues,<o:p></o:p></p><p class=plaintext01><o:p> </o:p></p><p class=plaintext01>Please consider submitting an abstract to the following session for the 2014 AGU fall meeting. The abstract submission deadline is August 6, 2014. <o:p></o:p></p><p class=plaintext01><o:p> </o:p></p><p class=plaintext01><span class=pageheadline>++++++++++++++++++++++++<o:p></o:p></span></p><p class=plaintext01>Session ID: 2481 <o:p></o:p></p><p class=plaintext01><o:p> </o:p></p><p class=plaintext01>Session Title: Frontiers in global change in the middle atmosphere and its coupling to the lower atmosphere <o:p></o:p></p><p class=plaintext01><o:p> </o:p></p><p class=plaintext01>Session Description: The climate change manifested as surface and lower atmosphere warming is associated with enhanced middle atmosphere cooling through radiative-dynamical coupling. Accurate assessment of the enhanced cooling in the middle atmosphere provides us with an early warning system for global warming at the surface. The higher sensitivity of various non-localized feedback processes to climate change in the middle atmosphere places high demands on measurement, modeling, and assessment analysis of climate forcings and feedbacks. This session addresses recent advancements in global data analysis and the development of new diagnostic tools used to evaluate and model the feedback responses to natural and anthropogenic climate forcings from above and below, including greenhouse gases, aerosols, solar variability, and volcanic activity. We invite contributions presenting new data and methodological innovations for climate feedback diagnosis as well as model studies that highlight changes in the middle atmosphere or their coupling with the surface and lower atmosphere climate. <o:p></o:p></p><p class=plaintext01><o:p> </o:p></p><p class=plaintext01>Primary Section/Focus Group: SPA-Aeronomy <o:p></o:p></p><p class=plaintext01>Co-Sponsor(s): A - Atmospheric Sciences; GC - Global Environmental Change<o:p></o:p></p><p class=plaintext01>Convener: Xun Zhu<o:p></o:p></p><p class=plaintext01>Co-conveners: William Swartz, Ming Cai, Jae Lee<o:p></o:p></p><p class=plaintext01><span class=pageheadline>++++++++++++++++++++++++<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>