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Potential of collocated radiometer and wind profiler observations for monsoon studies

Balaji, B and Prabha, TV and Jaya Rao, Y and Kiran, T and Dinesh, G and Chakravarty, K and Sonbawne, SM and Rajeevan, M (2017) Potential of collocated radiometer and wind profiler observations for monsoon studies. Atmospheric Research, 194. pp. 17-26.

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Abstract

Collocated observations from microwave radiometer and wind profiler are used in a pilot study during the monsoon period to derive information on the thermodynamics and winds and association with rainfall characteristics. These instruments were operated throughout the monsoon season of 2015. Continuous vertical profiles of winds, temperature and humidity show significant promise for understanding the low-level jet, its periodicity and its association with moisture transport, clouds and precipitation embedded within the monsoon large-scale convection. Observations showed mutually beneficial in explaining variability that are part of the low frequency oscillations and the diurnal variability during monsoon. These observations highlight the importance of locally driven convective systems, in the presence of weak moisture transport over the area. The episodic moisture convergence showed a periodicity of 9 days which matches with the subsequent convection and precipitation and thermodynamic regimes. Inferences from the diurnal cycle of moisture transport and the convective activity, relationship with the low-level jet characteristics and thermodynamics are also illustrated.

Item Type: Article
Additional Information: Copyright of this article belongs to Elsevier.
Uncontrolled Keywords: Monsoon low-level jetSouthwest monsoonWind profiler radarRadiometer
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 15 Dec 2017 10:21
Last Modified: 15 Dec 2017 10:21
URI: http://moeseprints.incois.gov.in/id/eprint/4424

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