Characteristics of atmospheric surface layer during winter season over Anantapur (14.62° N, 77.65° E), a semi-arid location in peninsular India
| Autor: | N Siva Kumar Reddy, G. Balakrishnaiah, K Rajaobul Reddy, K. Rama Gopal, KiranKumar N.V.P. |
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| Rok vydání: | 2021 |
| Předmět: |
Atmospheric Science
010504 meteorology & atmospheric sciences Turbulence Atmospheric sciences 01 natural sciences Arid Stability (probability) Power law Wind speed Physics::Fluid Dynamics Geophysics Space and Planetary Science Anemometer Semi-arid climate 0103 physical sciences Environmental science Surface layer 010303 astronomy & astrophysics Physics::Atmospheric and Oceanic Physics 0105 earth and related environmental sciences |
| Zdroj: | Journal of Atmospheric and Solar-Terrestrial Physics. 216:105554 |
| ISSN: | 1364-6826 |
| DOI: | 10.1016/j.jastp.2021.105554 |
| Popis: | The atmospheric surface layer turbulence statistics and surface fluxes during the winter season over Anantapur, a semi-arid region, are investigated using sonic anemometers mounted 10 m and 18 m above ground level on a 32-m meteorological tower. This paper aims to investigate the applicability of Monin–Obukhov similarity theory and to understand the influence of wind speed on the turbulence intensities. Results reveal that normalized velocity variances follow 1/3 power law in unstable and stable conditions, while approaching constant values in the near-neutral conditions. The qualitative dependency of normalized velocity variances on stability is in agreement with past studies. |
| Databáze: | OpenAIRE |
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