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oai:www.ideals.illinois.edu:2142/80802 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Gardner, Chester S. Pan, Weilin 2015-09-25T20:08:14Z 2015-09-25T20:08:14Z 10000-01-01 2002 2002 Similar to the Na observations at South Pole in 1995--1997, the seasonal variations in Fe column abundance, height, and width exhibit a strong annual cycle. The Fe and Na densities exhibit strong 12-month oscillations with the amplitudes comparable to the background level, resulting in extremely thin layers and very low abundances during summer. The bottom sides of the Fe and Na layers are governed by different temperature-dependent neutral chemistry. The Fe density is correlated more closely with the temperature than is the Na. Above 95 km, both species have a negative correlation with the temperatures due to their ionic chemistry and photoionization. Made available in DSpace on 2015-09-25T20:08:14Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3070408.pdf: 3765292 bytes, checksum: 748f2a3e94dc31732b411eef806efdaf (MD5) Previous issue date: 2002 Embargo set by: Seth Robbins for item 82084 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 72 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2002. http://hdl.handle.net/2142/80802 (MiAaPQ)AAI3070408 eng Physics, Atmospheric Science LIDAR Studies of the Middle Atmosphere Temperatures and Iron Layer at South Pole text Electrical Engineering Electrical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.