GPT2: Empirical slant delay model for radio space geodetic techniques.
GPT2: Empirical slant delay model for radio space geodetic techniques.
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DOI:
10.1002/grl.50288
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发表时间:
2013-03-28
影响因子:
5.2
通讯作者:
Nilsson, T.
中科院分区:
文献类型:
--
作者:
Lagler, K.;Schindelegger, M.;Boehm, J.;Krasna, H.;Nilsson, T.
Up to now, state-of-the-art empirical slant delay modeling for processing observations from radio space geodetic techniques has been provided by a combination of two empirical models. These are GPT (Global Pressure and Temperature) and GMF (Global Mapping Function), both operating on the basis of long-term averages of surface values from numerical weather models. Weaknesses in GPT/GMF, specifically their limited spatial and temporal variability, are largely eradicated by a new, combined model GPT2, which provides pressure, temperature, lapse rate, water vapor pressure, and mapping function coefficients at any site, resting upon a global 5° grid of mean values, annual, and semi-annual variations in all parameters. Built on ERA-Interim data, GPT2 brings forth improved empirical slant delays for geophysical studies. Compared to GPT/GMF, GPT2 yields a 40% reduction of annual and semi-annual amplitude differences in station heights with respect to a solution based on instantaneous local pressure values and the Vienna mapping functions 1, as shown with a series of global VLBI (Very Long Baseline Interferometry) solutions.
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影响因子:
3.9
作者:
Boehm, Johannes;Werl, Birgit;Schuh, Harald
通讯作者:
Schuh, Harald
影响因子:
1.6
作者:
DAVIS, JL;HERRING, TA;ELGERED, G
通讯作者:
ELGERED, G
影响因子:
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作者:
Petrov, L;Boy, JP
通讯作者:
Boy, JP
DOI:
10.1016/s1464-1895(01)00087-4
发表时间:
2001-01-01
期刊:
PHYSICS AND CHEMISTRY OF THE EARTH PART A-SOLID EARTH AND GEODESY
影响因子:
--
作者:
Niell, AE
通讯作者:
Niell, AE
DOI:
10.1109/tgrs.2011.2160952
发表时间:
2012-02-01
影响因子:
8.2
作者:
Nafisi, Vahab;Urquhart, Landon;Gegout, Pascal
通讯作者:
Gegout, Pascal