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http://library.iigm.res.in:8080/xmlui/handle/123456789/641| Title: | Observations of peculiar sporadic sodium structures and their relation with wind variations |
| Authors: | Sridharan, S. Prasanth, P. Vishnu Kumar, Y. Bhavani Ramkumar, Geetha Sathishkumar, S. Raghunath, K. |
| Keywords: | Resonance lidar Sporadic sodium layers Meteor radar Wind shear Sodium density |
| Issue Date: | 2009 |
| Citation: | Journal of Atmospheric and Solar-Terrestrial Physics, v.71, p.575–582, 2009, doi: 10.1016/j.jastp.2008.12.002 |
| Abstract: | Resonance lidar observations of sodium density in the upper mesosphere region over Gadanki (13.5°N, 79.2°E) rarely show complex structures with rapid enhancements of sodium density, completely different from normal sporadic sodium structures. The hourly averaged meteor radar zonal winds over Trivandrum (8.5°N, 76.5°E) show an eastward shear with altitude during the nights, when these events are formed. As suggested by Kane et al. [2001. Joint observations of sodium enhancements and field-aligned ionospheric irregularities. Geophysical Research Letters 28, 1375–1378], our observations show that the complex structures may be formed due to Kelvin–Helmholtz instability, which can occur in the region of strong wind shear. |
| URI: | http://localhost:8080/xmlui/handle/123456789/641 |
| Appears in Collections: | UAS_Reprints |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| SridharanS_etal_JASTP_2009.pdf Restricted Access | 1.59 MB | Adobe PDF | View/Open Request a copy |
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