Global empirical model for mapping zenith wet delays onto
We can map zenith wet delays onto precipitable water with a conversion factor, but in order to calculate the exact conversion factor, we must precisely calculate its key variable (T_mat {m}). Yao et al. (J Geod 86:1125–1135, 2012. doi: 10.1007/s00190-012-0568-1) established the first generation of global (T_mat …