Regular and systematic measurements of mesospheric temperatures have been carried out during March and April 2007 to determine planetary-scale wave activities in the tropical region, utilizing ground-based Rayleigh Light Detection and Ranging (LiDAR) and satellite-based Microwave Limb
Sounder (MLS) data from Gadanki, India (13.5° N, 79.2° E) and MLS data over a site in North America (23.5° N, 100° W). A dominant component of the 3–5 day period wave is revealed at four altitudes (80, 70, 60 and 50 km) over the two observation stations. The estimated
vertical wavelength (∼40 km), zonal phase speed (∼140 m s−1), longitudinal and latitudinal extensions have suggested the wave to be an ultra-fast Kelvin (UFK) wave with zonal wave number 1. In addition to the UFK wave, a probable quasi 2 day Rossby gravity wave
is also found to be present most of the time. Another 5–7 day wave component, observed at some altitudes with significant prominence, is surmised to be a manifestation of a 6.5 day wave.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Space and Atmospheric Sciences Division, Physical Research Laboratory, Navarangpura, Ahmedabad, India
Atmospheric Sciences Division, Aryabhatta Research Institute of Observational Sciences, Nainital, India
Department of Physics, DSB Campus,Kumaun University, Nainital, India
Publication date: 10 June 2011
More about this publication?