The initial IGGtrop model proposed for Chinese BDS (BeiDou System) is not very suitable for BDS/GNSS research and application due to its large data volume while it shows a global mean accuracy of 4 cm. New versions of the global zenith tropospheric delay (ZTD) model IGGtrop are developed through further investigation on the spatial and temporal characteristics of global ZTD. From global GNSS ZTD observations and weather reanalysis data, new ZTD characteristics are found and discussed in this study including: small and inconsistent seasonal variation in ZTD between 10?Sand10?N and stable seasonal variation outside; weak zonal variation in ZTD at higher latitudes (north of 60?N and south of 40?S ) and at heights above 6 km, etc.
Li, W., Li, Z., Liou, Y., Wang, N., Yuan, Y., Ou, J., Chai, Y. New versions of the BDS/GNSS zenith tropospheric delay model IGGtrop. Springer Berlin Heidelberg, 2015.
Li, W., Li, Z., Liou, Y., Wang, N., Yuan, Y., Ou, J., Chai, Y. New versions of the BDS/GNSS zenith tropospheric delay model IGGtrop. Springer Berlin Heidelberg, 2015.
Li, W., Li, Z., Liou, Y., Wang, N., Yuan, Y., Ou, J., Chai, Y. (2015) New versions of the BDS/GNSS zenith tropospheric delay model IGGtrop, Springer Berlin Heidelberg.
Li, W., Li, Z., Liou, Y., Wang, N., Yuan, Y., Ou, J., & Chai, Y. (2015). New versions of the BDS/GNSS zenith tropospheric delay model IGGtrop. Springer Berlin Heidelberg,.
Li W, Li Z, Liou Y, Wang N, Yuan Y, Ou J, et al. New versions of the BDS/GNSS zenith tropospheric delay model IGGtrop. Springer Berlin Heidelberg; 2015.
