Evaluation of zenithal tropospheric delay predictions for South America from high spatial resolution numerical weather prediction model

Authors

  • LUIZ FERNANDO SAPUCCI INPE
  • JOÃO FRANCISCO GALERA MONICO UNESP
  • LUIZ AUGUSTO TOLEDO MACHADO INPE
  • GUILHERME POLESZUK DOS SANTOS ROSA INPE

DOI:

https://doi.org/10.5380/bcg.v14i4.13238

Abstract

A Center for Weather Forecast and Climatic Studies of National Institute for Space Research (CPTEC/INPE) has provided to the Brazilian Geodetic community, since 2004, an alternative to correct the GNSS observables from the tropospheric refraction. Numerical Weather Prediction (NWP) Model is used to generate Zenital Tropospheric Delay (ZTD). For the version 1, it was developed a model with horizontal resolution of 100 km, which was updated with Eta model, with resolution of 20 km. This paper provides the most significative details of the current version, as well an evaluation of its quality, using for such ZTD estimates from GPS data collect at RBMC. Comparing to the old version, considerable improvement could be observed from the new model, mainly in Brasilia and Curitiba, reaching up to 55% improvement. When all stations were used in the quality control, almost null bias and RMS of about 4 to 5 cm could be observed.

Downloads

How to Cite

SAPUCCI, L. F., MONICO, J. F. G., MACHADO, L. A. T., & DOS SANTOS ROSA, G. P. (2008). Evaluation of zenithal tropospheric delay predictions for South America from high spatial resolution numerical weather prediction model. Bulletin of Geodetic Sciences, 14(4). https://doi.org/10.5380/bcg.v14i4.13238

Issue

Vol. 14 No. 4 (2008)

Section

Communications

License

Submission of an original manuscript to the Journal will be taken to mean that it represents original work  not previously published, that is not being considered elsewhere for publication.

The BCG allows the author(s) to hold the copyright without restrictions  and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

The BCG also allows the authors  to retain publishing rights without restrictions.