Refractive Index Profiles and Associated Synoptic Patterns

Abstract

A study is made of meteorological conditions associated with synoptic patterns passing over the Middle West leading to super-refractive index profiles. The signal strength for a 71.75 mc TV-link in Illinois is related to the refractive index profiles.

Microwave Refractive Index Distributions Associated with the Texas-Gulf Cyclone1

“…One of these approaches, represented by the work of Bean and Horn (1959), Fannin and Jehn (1957), Plank (1952), and many others, has been to make use of air-mass climatology principles in delineating the distributions of refractive index at different locations. The other approach, represented by the work of Arvola (1957), Bean and Riggs (1959), Bellaire and Arvola (1954), Cowan (1953), and Kerr (1948), to mention only a few, has utilized the techniques of synoptic meteorology not only to portray but in some cases to forecast refractive-index distributions or associated radio parameters.…”

Wildfire Smoke Particulate Matter Concentration Measurements Using Radio Links From Cellular Communication Networks

“…However, conditions of high smoke concentration could possibly produce or be linked to variations in the air refractivity. Anomalous propagation conditions have previously been identified in radio link RSLs and linked to pollution (David & Gao, 2016), sea-breeze (Rao et al, 1999) and synoptic weather patterns such as fronts (Arvola, 1957). To demonstrate the potential for monitoring smoke PM with such radio link RSLs fluctuations, data collected during conditions of smoke haze resulting from the large wildfires that occurred in South-East Australia during the Southern Hemisphere Summer period of 2019-2020 have been analyzed.…”