<div class="csl-bib-body">
<div class="csl-entry">Böhm, J., Möller, G., Schindelegger, M., Pain, G., & Weber, R. (2015). Development of an improved empirical model for slant delays in the troposphere (GPT2w). <i>GPS Solutions</i>. https://doi.org/10.1007/s10291-014-0403-7</div>
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Global pressure an temperature 2 wet (GPT2w) is an empirical troposphere delay model providing the mean values plus annual and semiannual amplitudes of pressure, temperature and its lapse rate, water vapor pressure and its decrease factor, weighted mean temperature, as well as hydrostatic and wet mapping function coefficients of the Vienna mapping function 1. All climatological parameters have been derived consistently from monthly mean pressure level data of ERA-Interim fields (European Centre for Medium-Range Weather Forecasts Re-Analysis) with a horizontal resolution of 1°, and the model is suitable to calculate slant hydrostatic and wet delays down to 3° elevation at sites in the vicinity of the earth surface using the date and approximate station coordinates as input. The wet delay estimation builds upon gridded values of the water vapor pressure, the weighted mean temperature, and the water vapor decrease factor, with the latter being tuned to ray-traced zenith wet delays. Comparisons with zenith delays at 341 globally distributed global navigation satellite systems stations show that the mean bias over all stations is below 1 mm and the mean standard deviation is about 3.6 cm. The GPT2w model with the gridded input file is provided at http://ggosatm.hg.tuwien.ac.at/DELAY/SOURCE/GPT2w/.
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dc.description.sponsorship
ESA as part of the Technology Research Program
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dc.description.sponsorship
Austrian Science Fund (FWF)
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dc.language
English
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dc.language.iso
en
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dc.publisher
Springer
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dc.relation.ispartof
GPS Solutions
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dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
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dc.subject
Tropospheric delay
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dc.subject
Zenith delay
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dc.subject
Slant delay
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dc.subject
Mapping function
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dc.title
Development of an improved empirical model for slant delays in the troposphere (GPT2w)
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dc.type
Article
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dc.type
Artikel
de
dc.rights.license
Creative Commons Namensnennung 4.0 International
de
dc.rights.license
Creative Commons Attribution 4.0 International
en
dc.contributor.affiliation
National School of Geographic Sciences, ENSG (IGN-School), France