Koch, I.; Naeimi, M.; Flury, J.; Shabanloui, A.: LUH-GRACE2018: A new time series of monthly gravity field solutions from GRACE. GRACE/GRACE-FO Science Team Meeting 2018, 9.-11.10.2018, Potsdam, Germany
Zusammenfassung: | |
In this contribution, we present a new time series of monthly gravity field solutions mainly obtained from GRACE K band range rate (KBRR) measurements. Our monthly solutions are computed using the in-house developed GRACE-SIGMA software. The processing is based on variational equations and consists of two main steps. In the first step, 3-hourly orbital arcs of the two satellites and the state transition and sensitivity matrices are dynamically integrated using a tailored Gauss-Jackson integrator. In this step, initial state vectors and 3D accelerometer bias parameters are adjusted using GRACE L1B reduced dynamic positions as main observations. In the second step, normal equations are accumulated and the normalized spherical harmonic coefficients up to degree and order 80 are estimated along with empirical and previously mentioned parameters from step 1. Here we use KBRR measurements as main observations and introduce reduced dynamic positions to solve for the low frequency coefficients. In terms of degree standard deviations, our gravity field solutions agree well with solutions of CSR, GFZ and JPL. In this contribution, processing details and derived mass variations are presented. The new time series, entitled as LUH-GRACE2018, can be downloaded from IfE or ICGEM websites. | |
Lizenzbestimmungen: | CC BY 3.0 Unported |
Publikationstyp: | ConferenceObject |
Publikationsstatus: | publishedVersion |
Erstveröffentlichung: | 2018-10-09 |
Die Publikation erscheint in Sammlung(en): | Fakultät für Bauingenieurwesen und Geodäsie |
Pos. | Land | Downloads | ||
---|---|---|---|---|
Anzahl | Proz. | |||
1 | Germany | 441 | 76,03% | |
2 | United States | 50 | 8,62% | |
3 | China | 37 | 6,38% | |
4 | Iran, Islamic Republic of | 7 | 1,21% | |
5 | Switzerland | 7 | 1,21% | |
6 | No geo information available | 4 | 0,69% | |
7 | Russian Federation | 4 | 0,69% | |
8 | Canada | 4 | 0,69% | |
9 | India | 3 | 0,52% | |
10 | Australia | 3 | 0,52% | |
andere | 20 | 3,45% |
Hinweis
Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.