Potassium Doppler-resonance lidar for the study of the mesosphere and lower thermosphere at the Arecibo Observatory |
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| Authors: | Jonathan S. Friedman, Craig A. Tepley, Shikha Raizada, Qihou H. Zhou, Jonas Hedin,Rub n Delgado |
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| Affiliation: | a National Astronomy and Ionosphere Center, Arecibo Observatory, HC-03 Box 53995, Arecibo, PR 00612, USA;b Manufacturing and Mechanical Engineering Department, Miami University, Oxford, OH 45056, USA;c Luleå University of Technology, Luleå, Sweden;d University of Puerto Rico, Department of Chemistry, P.O. Box 23346, San Juan, PR 00931, USA |
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| Abstract: | ![]()
We have developed a lidar to study the temperature structure of the nighttime mesopause region over the Arecibo Observatory (18.35°N, 66.75°W) by measuring the lineshape of the fluorescence spectrum of atomic potassium that is deposited in the mesosphere and lower thermosphere (MLT) by meteors. To demonstrate how the potassium lidar can enhance MLT studies at Arecibo, we show recent results for: (1) comparisons with airglow temperature measurements; (2) simultaneous operations with stratospheric and mesospheric temperature profiling by Rayleigh lidar; (3) simultaneous observations of K, Ca+, and E-region electron density profiles; and (4) occurrences of sporadic K layers, and relationships to sporadic E layers. |
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| Keywords: | Lidar Resonance lidar Middle atmospheric temperatures Middle atmospheric chemistry Mesosphere and lower thermosphere |
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