Important Atmospheric Parameters over a Indian Tropical Station Using Various Remote Sensing Instruments and a Model
S. Sreedevi
Department of Physics, Andhra University, Visakhapatnam- 530017, India.
P. S. Brahmanandam *
Department of Physics, Shri Vishnu Engineering College for Women (A), Bhimavaram-534202, India.
K. Tarakeswara Rao
Department of Physics, Andhra University, Visakhapatnam- 530017, India.
V. Naveen Kumar
Department of Physics, Gudlavalleru Engineering College, Gudlavalleru-521356, India.
G. Anil Kumar
School of Renewable Energy and Environment, JNTUK, Kakinada - 533003, Andhra Pradesh, India.
K. Samatha
Department of Physics, Andhra University, Visakhapatnam- 530017, India.
M. P. Rao
Department of Physics, Andhra University, Visakhapatnam- 530017, India.
*Author to whom correspondence should be addressed.
Abstract
For the periods 01 July, 02 July, and 03 July 2018, important atmospheric parameters such as temperature, relative humidity, pressure, wind direction, and wind speed have been calculated over a tropical Indian station Gadanki (13.5°N, 79.2°E). Atmospheric Boundary Layer height (ABLH) was estimated using various analytical methods such as, vertical gradient, double gradient, and logarithmic gradient, and the results are compared with the European Centre for Medium-Range Weather Forecasts (ECMWF) ABLH data. With the COSMIC Radio Occultation (RO) technique and a regular balloon-borne radiosonde, tropopause heights and their corresponding temperatures were determined using minimum temperature criteria. Gradient and double gradient methods were more successful at capturing ABLHs than the logarithmic gradient method.
Keywords: High-resolution GPS radiosonde, radio occultation technique, tropopause, atmospheric boundary layer height, analytical methods