Atmospheric VLBI: A method to validate long time series of water vapour content
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2009

We assess the possibility to validate time series of the atmospheric integrated water vapour (IWV) from GPS observations using geodetic VLBI at the Onsala Space Observatory in Sweden. An overall motivation is to determine the relation—and its uncertainties— between trends in the IWV with trends in the ground temperature. We find that the frequency of VLBI experiments is too low in order to validate estimated linear trends using data acquired over a ten year period. On the other hand, the VLBI method provides an accuracy of the same order, compared to using GPS or nearby radiosonde launches for validation of the IWV on an absolute scale. Further assessments using other, as well as larger, data sets are called for.

global warming

atmospheric water vapour

VLBI

global wetting

Författare

Gunnar Elgered

Chalmers, Institutionen för radio- och rymdvetenskap, Rymdgeodesi och geodynamik

Rüdiger Haas

Chalmers, Institutionen för radio- och rymdvetenskap, Rymdgeodesi och geodynamik

Tobias Nilsson

Chalmers, Institutionen för radio- och rymdvetenskap, Rymdgeodesi och geodynamik

Proceedings of the 19th European VLBI for Geodesy and Astrometry Working Meeting, 24-25 March 2009, Bordeaux

49-53

Ämneskategorier

Meteorologi och atmosfärforskning

Övrig annan teknik

Geovetenskap och miljövetenskap

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Skapat

2017-10-07