G11A-0968
Further Analysis of Atmospheric and Oceanic Angular Momentum Datasets for Predictions of Earth Orientation.

Monday, 14 December 2015
Poster Hall (Moscone South)
Nicholas G Stamatakos, US Naval Observatory, Washington, DC, United States, Dennis D McCarthy, Retired, Washington, DC, United States, T. Marshall Eubanks, Asteroid Initiatives LLC, Virginia, United States and David Salstein, Atmospheric and Environmental Research, Lexington, MA, United States
Abstract:
We continue to investigate the use of U.S.-produced atmospheric and oceanic angular momentum (AAM and OAM) estimates to improve the determination of near real-time observations of Earth rotation and polar motion parameters and their short-term predictions. This effort builds on work begun in 2014, presented at the AGU Fall 2014 meeting in San Francisco[1]. The U.S. Navy atmospheric AAM (NAVGEM) and OAM series (HYCOM) are considered, as they are available in near real-time for Earth orientation estimation. Additionally, use of a combination of these series should be internally consistent as the NAVGEM atmospheric analyses are used as forcing for the Navy HYCOM model. A Kalman filter or other optimal combination techniques may be used to enhance and expedite the evaluation process.

[1] Salstein, D., Stamatakos, N., New Atmospheric and Oceanic Angular Momentum Datasets for Predictions of Earth Rotation/Polar Motion, G13A-0521 POSTER at the American Geophysical Union Meeting, San Francisco, California, December 2014.

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