HR: 13:40h
AN: G42B-01 INVITED     [PDF]
TI: Trends in the atmospheric water vapor content derived from space geodetic and remote sensing techniques.
AU: * Haas, R
EM: haas@oso.chalmers.se
AF: Onsala Space Observatory, Chalmers University of Technology, Rao, Onsala, SE-439 92 Sweden
AU: Elgered, G
EM: kge@oso.chalmers.se
AF: Onsala Space Observatory, Chalmers University of Technology, Rao, Onsala, SE-439 92 Sweden
AU: Johansson, J
EM: jmj@oso.chalmers.se
AF: Onsala Space Observatory, Chalmers University of Technology, Rao, Onsala, SE-439 92 Sweden
AU: Gradinarsky, L
EM: lbg@oso.chalmers.se
AF: Onsala Space Observatory, Chalmers University of Technology, Rao, Onsala, SE-439 92 Sweden
AB: The amount of water vapor in the atmosphere is an important parameter for climate related research. Space geodetic and remote sensing techniques are sensitive to this parameter and thus might provide complementary information to the traditional meteorological techniques. However, the techniques have individual advantages and disadvantages in terms of temporal and spatial resolution and instrumental stability. Therefore a combination of time series of atmospheric water vapor derived from independent and co-located space geodetic and remote sensing techniques seems to be an appropriate strategy to obtain robust and consistent results for possible trends in the atmospheric water vapor. We use the independent and co-located techniques of geodetic VLBI, GPS and microwave radiometry at the Onsala Space Observatory and additionally radiosonde observations taken at the Landvetter airport in 38 km distance to investigate possible trends. Different statistical approaches are applied and the results are compared to climate models.
DE: 1709 Geodesy
DE: 3360 Remote sensing
DE: 6904 Atmospheric propagation
SC: Geodesy [G]
MN: 2003 Fall Meeting