HR: 11:10h
AN: SA41C-04    [PDF]
TI: Observations of Sporadic Sodium-, Iron- and E-Layers at a High-Latitude Site.
AU: * Collins, R L
EM: rlc@gi.alaska.edu
AF: Geophysical Institute, University of Alaska Fairbanks 903 Koyukuk Drive, Fairbanks, AK 99775 United States
AU: Hou, T
EM: tao_hou@yahoo.com
AF: Geophysical Institute, University of Alaska Fairbanks 903 Koyukuk Drive, Fairbanks, AK 99775 United States
AU: Peshave, M A
EM: ftmap@uaf.edu
AF: Geophysical Institute, University of Alaska Fairbanks 903 Koyukuk Drive, Fairbanks, AK 99775 United States
AU: Conde, M
EM: mark.conde@gi.alaska.edu
AF: Geophysical Institute, University of Alaska Fairbanks 903 Koyukuk Drive, Fairbanks, AK 99775 United States
AU: Reinisch, B
EM: bodo_reinisch@uml.edu
AF: Center for Atmsopheric Research, University of Massachusetts Lowell 600 Suffolk Street, Lowell, MA 01854 United States
AB: Sodium resonance lidar observations have been ongoing at Poker Flat Research Range (PFRR), Chatanika, Alaska (65oN, 147oW) since 1995. Iron resonance lidar measurements have been ongoing at PFRR since 2000. We present an overview of the iron and sodium layer structure at this high-latitude site. In particular we focus on sporadic metal layer events highlighting differences in the appearance and altitude distribution of the sporadic layers in the two species. We compare these neutral metal events detected by the lidar with sporadic-E layer events detected by digisonde about 50 km from PFRR at College Alaska. We also compare the events to structures observed in 2-D images of the resonantly scattered sunlight from the sodium layer. We discuss the observations in terms of modeling studies of the mesospheric metal layers and the distribution of meteoric material in the atmosphere.
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0365 Troposphere--composition and chemistry
DE: 2419 Ion chemistry and composition (0335)
DE: 6245 Meteors
SC: SPA - Aeronomy [SA]
MN: 2003 Fall Meeting