RT Journal Article T1 Extinction, refraction, and delay in the atmosphere A1 Rapp Arrarás, Ígor A1 Domingo Santos, Juan Manuel AB This paper establishes that absolute optical air mass and hydrostatic atmospheric delay of electromagnetic waves are proportional magnitudes, and, consequently, their respective obliquity ratios are identical dimensionless quantities. This means that a potential source for developing new models for relative optical air mass can be found in the formulae for the atmospheric delay in electromagnetic signals (and vice versa). In this respect, for estimating relative optical air mass, we demonstrate that Herring's (1992) family of mapping functions for modeling atmospheric delay is more accurate than functional forms devised expressly for the purpose, such as that of Kasten (1965). PB American Geophysical Union (AGU) SN 2169-897X SN 2169-8996 YR 2008 FD 2008 LK http://hdl.handle.net/10272/10968 UL http://hdl.handle.net/10272/10968 LA eng NO Rapp Arrarás, Í., Domingo Santos, J.M.: "Extinction, refraction, and delay in the atmosphere", Journal of Geophysical Research: Atmospheres, Vol. 113, nº D20, art. D20116,, (2008). DOI:10.1029/2008JD010176 DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026