Other
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29l...1r&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 12, pp. 1-1, CiteID 1560, DOI 10.1029/2001GL014535
Other
5
Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics (0341, 0342), Global Change: Atmosphere (0315, 0325), Atmospheric Composition And Structure: Middle Atmosphere-Energy Deposition
Scientific paper
We introduce the first measurements of upper atmospheric temperature made from the Arecibo Observatory using the iron Boltzmann lidar technique. We use a single laser transmitter that can flip between two emissions every other pulse, which is suitable to observe the two iron transitions within the same region of space. Comparisons are made with airglow measurements and the MSIS-90 model to estimate temperature, and with incoherent scatter radar observations to associate the structure of electron concentration with enhancements observed in the concentration of neutral iron. We find good agreement between lidar and airglow derived temperatures near the mesopause, while the model tends to underestimate the thermal depth of the mesopause at Arecibo compared with observations. In addition, simultaneous temperatures measured via lidar and airglow may help to clarify the heights where the airglow emissions occur.
Raizada Shikha
Tepley Craig A.
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