Atmospheric excitation of Earth rotation/polar motion at high temporal resolution

Details Atmospheric excitation of Earth rotation/polar motion at high temporal resolution Atmospheric excitation of Earth rotation/polar motion at high temporal resolution

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jsrs.meet..177s&link_type=abstract

"Proceedings of the "Journées Systèmes de Référence Spatio-temporels 2007". Observatoire de Paris, 17-19 September 2007. Editor:

Statistics

Applications

1

Scientific paper

We have calculated atmospheric effective angular momentum functions of Earth ro- tation/polar motion with hourly resolution based on the NASA Goddard Earth Observation System (GEOS-4) atmospheric model. Such excitations are based on model forecasts at five of the six hours, and a mixture of model and observations at the sixth hour. This heterogeneous procedure can cause discontinuities if not mitigated by special approaches. The wind-based polar motion terms have a strong diurnal signal related to tidal fluctuations, though the phase appears to vacillate. October 2002 en- compassing the intensive CONT02 Earth rotation-observing period was selected here. Time-spectra of wind-based, pressure-based, and geodetic terms reveal diurnal and semidiurnal signals with additional ´ sub-daily spectral peaks. NASA is currently introducing the d2Modern Era Retrospective-Analysis Re- search and Applications system, which should eliminate the 6-hour discontinuities. This MERRA system will give us the opportunity to investigate high temporal resolution excitation for more recent CONT campaigns.

Affiliated with

Also associated with

No associations

Rating

Atmospheric excitation of Earth rotation/polar motion at high temporal resolution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Atmospheric excitation of Earth rotation/polar motion at high temporal resolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Atmospheric excitation of Earth rotation/polar motion at high temporal resolution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1705168