Observations of anomalous propagation over waters near Sweden

Autor: L. Norin
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Atmospheric Measurement Techniques, Vol 16, Pp 1789-1801 (2023)
Druh dokumentu: article
ISSN: 1789-2023
1867-1381
1867-8548
DOI: 10.5194/amt-16-1789-2023
Popis: Radio waves propagating in the atmosphere are affected by the prevailing atmospheric state. The state of the atmosphere can cause radio waves to refract more or less towards the ground. When the refractive index of the atmosphere differs from standard atmospheric conditions, the propagation is considered to be anomalous. Radars which are affected by anomalous propagation can observe ground clutter far beyond the radar horizon. In this work, 4.5 years' worth of data from five operational Swedish C-band dual-polarization weather radars are presented. Analyses of the data reveal a strong seasonal cycle and a weaker diurnal cycle in ground clutter from coastal regions across nearby waters. A comparison was drawn between the impacts of anomalous propagation on ground clutter measured with horizontal polarization and vertical polarization, respectively; however, no clear difference was found.
Databáze: Directory of Open Access Journals
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje