Observations of Sporadic Sodium-, Iron- and E-Layers at a High-Latitude Site.

Details Observations of Sporadic Sodium-, Iron- and E-Layers at a High-Latitude Site. Observations of Sporadic Sodium-, Iron- and E-Layers at a High-Latitude Site.

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa41c..04c&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SA41C-04

Physics

0340 Middle Atmosphere: Composition And Chemistry, 0365 Troposphere: Composition And Chemistry, 2419 Ion Chemistry And Composition (0335), 6245 Meteors

Scientific paper

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.

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