Physics
Scientific paper
Apr 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jastp..71..618d&link_type=abstract
Journal of Atmospheric and Solar-Terrestrial Physics, Volume 71, Issue 5, p. 618-624.
Physics
Surface Layer, Spectrum, Oscillation
Scientific paper
Analysis of wind, air temperature, humidity and rainfall data from Land Surface Processes Experiment (LASPEX) in the surface layer at Anand (22°35'N, 72°55'E) and Khandha (22°02'N, 73°11'E) during January to December 1997 is presented. Wind and temperature at various levels showed prominent diurnal variation. Progression of daily wind and temperature revealed the intra-seasonal, quasi-biweekly and 6-9 day oscillations indicated large-scale convection, transport of heat and water vapor from Arabian Sea towards these stations. Power spectrum of wind and humidity corroborated the planetary scale Madden-Julian oscillation in the surface layer. Periodic oscillations of 21, 6-9, 1 day and 12 h were prominent in the spectrum of all variables. Low-frequency spectral peaks showed the energy in wind is 2-3 times higher over Khandha than at Anand whereas temperature is 3 times higher at Anand than Khandha.
Chinthalu G. R.
Dharmaraj T.
Waghmare R. T.
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