Atmospheric Boundary Layer Characterization Using Multiyear Ground-Based Microwave Radiometric Observations Over a Tropical Coastal Station

Renju, R and Raju, C Suresh and Mishra, MK and Mathew, N and Rajeev, K and Moorthy, K Krishna (2017) Atmospheric Boundary Layer Characterization Using Multiyear Ground-Based Microwave Radiometric Observations Over a Tropical Coastal Station. In: IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 55 (12). pp. 6877-6882.

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Abstract

The continuous ground-based microwave radiometer profiler (MRP) observations of lower atmospheric temperature and humidity profiles are used to investigate the diurnal evolution of atmospheric boundary layer height (BLH) over a tropical coastal station. The BLH estimated from the MRP observations is compared with concurrent and collocated measurements of mixing layer height using a Micropulse Lidar and the BLH derived from radiosonde ascends. The monthly mean diurnal variation of the BLH derived from the multiyear (2010-2013) MRP observations exhibits strong diurnal variation with the highest around the local afternoon (similar to 12:00-15:00 IST) and the lowest during the nighttime (similar to 100-200 m). The daytime convective BLH is maximum during the premonsoon season (March-May) with the peak value (similar to 1300 m) occurring in April and minimum in the month of July (similar to 600 m). This paper presents the potential of MRP observations to investigate the continuous diurnal evolution of the BLH over a tropical coastal region manifested by a thermal internal boundary layer (TIBL) at much better time resolution, which is essential for understanding the rapid growth of the boundary layer and the TIBL during the forenoon period.

Item Type:	Journal Article
Publication:	IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
Additional Information:	Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Department/Centre:	Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Date Deposited:	29 Dec 2017 10:28
Last Modified:	29 Dec 2017 10:28
URI:	http://eprints.iisc.ac.in/id/eprint/58545

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