A5071880840- Precipitation Measurement and Analysis
- Meteorological Phenomena and Simulations
- Atmospheric aerosols and clouds
- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Atmospheric and Environmental Gas Dynamics
- Environmental Sustainability and Technology
- Radio Wave Propagation Studies
- Soil Moisture and Remote Sensing
- Calibration and Measurement Techniques
Indian Institute of Science Bangalore
2016-2020
Indian Space Research Organisation
2012-2015
Atmospheric aerosols play a key role in influencing the Earth's radiation budget. Still, their impacts remain poorly quantified due to complex mechanisms involved interaction between and clouds. Indeed, act as ice-nucleating particles cloud condensation nuclei, significantly altering formation of precipitation These environmental are strongly dependent on composition, origin, types. Moreover, high concentrations atmosphere degrade air quality, posing large health risks which also highly...
The work presented herein deals with the problems of inter-comparison precipitation values at 8 km × and 4 scales (herein often referred to as pixel or scale) that represent approximate instantaneous field view thermal infrared measurements from geostationary satellites like Kalpana, Geostationary Meteorological Satellite (GMS), etc. A number temporal, spatial spatiotemporal series TOGA-COARE radar observations are subjected autocorrelation analysis study variability. It was found drop 0.45...
Abstract The Megha‐Tropiques, an Indo‐French satellite, carries on board a microwave sounder, Sondeur Atmosphérique du Profil d'Humidité Intertropical par Radiométrie (SAPHIR), and radiometer, Microwave Analysis Detection of Rain Atmospheric Structures (MADRAS), along with two other instruments. Being Global Precipitation Measurement constellation satellite MT‐MADRAS was important sensor to study the convective clouds rainfall. Due nonfunctioning MADRAS, possibility detection estimation rain...
This study attempts to exploit 'Satellite with Advanced Research and Global Observation Satellite (Argos) Ka-band Altimeter (ALtiKa)' (SARAL/AltiKa) Passive Microwave Radiometer (PMR) measurements for the retrieval of precipitation rain rate (RRain) over global oceans. The altimetric are affected by presence these thus required be identified. In this research, concurrent SARAL Tropical Rainfall Measuring Mission – Precipitation Radar (TRMM-PR) used show sensitivity some altimeter derived...
An algorithm is developed to identify precipitation affected pixels and quantitatively measure the using Megha-Tropiques humidity sounder (SAPHIR) channels around water vapor absorption line at 183 GHz. Based on observed brightness temperatures all six of SAPHIR, a probabilistic rain identification proposed. The thus identified subjected intensive testing SAPHIR PR collocated dataset, that showed false alarm missing below 0.9 mm/h. Further radiative transfer simulations supported retrieval...
A number of Earth observing satellite missions carrying onboard passive microwave instruments operate in frequency channels close proximity terms frequency, polarization, incidence angle, system noise, etc., which, however, results difference their measurements. In order to remove such differences the measurements from two or more sensors, cross-calibration brightness temperature may be desired. Present study provides a procedure calibrate one sensor with another while they do not need have...