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Proceedings ArticleDOI

Multi-technique observations of convective rain events at a tropical location

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TLDR
In this paper, the effects of the convective rain on various atmospheric parameters have been investigated at Kolkata (22.57°N, 88.37°E), India, during pre-monsoon and monsoon period of 2013.
Abstract
The effects of the convective rain on various atmospheric parameters have been investigated at Kolkata (22.57°N, 88.37°E), India, during pre-monsoon and monsoon period of 2013. Various parameters like cloud base height and depth, liquid water content, rain rate and rain drop size distribution (DSD) are observed concurrently. The atmospheric electric field measured with an electric field monitor and the attenuation and depolarisation of satellite signals measured by a Ku-band receiving system are also studied during rain events. The instability indices obtained from radiometric measurements and the rain height profiles from micro rain radar are used to classify rain into two types, namely, convective and stratiform. The signatures of rain events on multi-technique observations are studied to indicate the various aspects of convective processes at a tropical location.

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Journal ArticleDOI

Lightning Prediction Using Electric Field Measurements Associated with Convective Events at a Tropical Location

TL;DR: In this article , the authors used an electric field monitor (EFM) at a tropical urban location, Kolkata (22.65°N, 88.45°E).
Proceedings Article

Convective rain study with radiometer, radar and electric field observations at a tropical location

TL;DR: In this paper, features of convective rain in respect of liquid water content, rain rate profile, and electric field variation have been identified, and multi-frequency radiometric brightness temperatures are used to nowcast impending rain events and rain fall amount.
Proceedings ArticleDOI

Rain Radar Studies of Boundary Layer Dynamics at a Tropical Location

TL;DR: The observations with a micro rain radar (MRR), an FMCW radar, over Kolkata, have been utilized to study the drop size distribution and its relationship with radar reflectivity at Ka-band, indicating that the increased downdraft causes breakup of rain drops into smaller sizes.
References
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Journal ArticleDOI

Nowcasting severe convective activity over southeast India using ground‐based microwave radiometer observations

TL;DR: In this article, the feasibility of nowcasting convective activity is examined by using thermodynamic indices derived from the ground-based microwave radiometer (MWR) observations located at a tropical station, Gadanki (13.5°N, 79.2°E).
Journal ArticleDOI

The skill of convective parameters and indices to predict isolated and severe thunderstorms

TL;DR: In this article, the authors evaluated the skill of the convective parameters and indices to predict thunderstorms by means of probability distribution functions, probabilities of thunderstorms according to an index threshold, and skill scores like the Heidke Skill Score (HSS) that are based on categorical verification.
Journal ArticleDOI

Rain Depolarization Measurements on Low Margin Ku-Band Satellite Signal at a Tropical Location

TL;DR: In this article, the degradation of cross-polarization discrimination due to rain over the Earth space path has been obtained from these measurements and compared to that estimated from the ITU-R model, indicating the characteristic feature of a tropical location.
Journal ArticleDOI

Multi-technique observations on precipitation and other related phenomena during cyclone Aila at a tropical location

TL;DR: In this article, the strong convective activities manifested through rainfall during the cyclone were studied with multi-technique observations involving micro rain radar, disdrometer, rain gauges, and a Ku-band satellite signal receiving system.
Journal ArticleDOI

Rainfall Rate and Electric Charge and Size of Raindrops of Six Spring Showers

TL;DR: In this article, two ground-based instruments were designed and built in order to accomplish the present research, one based on the principle of the induction ring, measuring the electric charge as well as the size of individual raindrops.
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