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Bebauungsplaene Saarlouis/Roden - In den Fliesen Teil 1 1.Aenderung Parkplatz Bahnhofstrasse Nr.41_1

Bebauungspläne und Umringe der Kreisstadt Saarlouis (Saarland) Stadtteil Roden:Bebauungsplan "In den Fliesen Teil 1 1.Aenderung Parkplatz Bahnhofstrasse Nr.41_1" der Kreisstadt Saarlouis, Stadtteil Roden

Bebauungsplaene Saarlouis/Roden - Schul und Sportzentrum in den Fliesen 1.Aenderung Nr.46_1

Bebauungspläne und Umringe der Kreisstadt Saarlouis (Saarland) Stadtteil Roden:Bebauungsplan "Schul und Sportzentrum in den Fliesen 1.Aenderung Nr.46_1" der Kreisstadt Saarlouis, Stadtteil Roden

Bebauungsplaene Saarlouis/Roden - In den Fliesen Teil 1 Nr.41_0

Bebauungspläne und Umringe der Kreisstadt Saarlouis (Saarland) Stadtteil Roden:Bebauungsplan "In den Fliesen Teil 1 Nr.41_0" der Kreisstadt Saarlouis, Stadtteil Roden

Konzeptbodenkarte Bliesen

Konzeptbodenkarte der Gemarkung Bliesen. Attributfelder: "PLOT" = Codierung von Bodentyp und Substrat als Zahl.

Bebauungsplaene St_Wendel/Bliesen - 02 18 Ortskern Bliesen Teilplan Sued

Bebauungspläne und Umringe der Kreisstadt St. Wendel (Saarland), Stadtteil Bliesen:Bebauungsplan "02 18 Ortskern Bliesen Teilplan Sued" der Kreisstadt St. Wendel, Stadtteil Bliesen

Bebauungsplaene St_Wendel/Bliesen - 02 19 Gewerbegebiet Hottenwald Teil II

Bebauungspläne und Umringe der Kreisstadt St. Wendel (Saarland), Stadtteil Bliesen:Bebauungsplan "02 19 Gewerbegebiet Hottenwald Teil II" der Kreisstadt St. Wendel, Stadtteil Bliesen

Bebauungsplaene St_Wendel/Bliesen - BPLAN_Umringe_Bliesen

Bebauungspläne und Umringe der Kreisstadt St. Wendel (Saarland), Stadtteil Bliesen:Umringe aller Bebauungsspläne der Kreisstadt St. Wendel, Stadtteil Bliesen

Bebauungsplaene St_Wendel/Bliesen - Bebauungsplaene St_Wendel/Bliesen

Bebauungspläne und Umringe der Kreisstadt St. Wendel (Saarland), Stadtteil Bliesen:Bebauungspläne und Umringe der Kreisstadt St_Wendel (Saarland), Stadtteil Bliesen

Bebauungsplaene St_Wendel/Bliesen - 02 17 Laubersthal

Bebauungspläne und Umringe der Kreisstadt St. Wendel (Saarland), Stadtteil Bliesen:Bebauungsplan "02 17 Laubersthal" der Kreisstadt St. Wendel, Stadtteil Bliesen

Assessment of satellite constellations for monitoring the variations in earth s gravity field

More than a decade has passed since the launch of the GRACE satellite mission. Although designed for a nominal mission lifetime of 5 years, it still provides valuable science data. An eventual systems failure and, thus, mission termination is expected any time soon, though. Despite a relative low spatial and temporal resolution, the monthly gravity fields have proved an invaluable and novel parameter set in several geoscience disciplines, allowing new research venues in the study of Global Change phenomena. The hydrological cycle is now subject to quantification at continental scales; the state of the cryosphere, particularly ice sheet melting over Greenland and Antarctica, can be monitored; and steric effects of sea-level change have become separable from non-steric ones. The enormous success of the mission has driven the need for continuation of monitoring mass changes in the Earth system. Indeed, a GRACE Follow-On (GFO) mission has been approved for launch in August 2017. Like its predecessor it will consist of two satellites flying en echelon with intersatellite K-Band ranging as the main gravitational sensor. Despite a number of planned technological improvements, including a laser link as demonstrator, GFO will mostly be based on GRACE heritage. Given a similar orbit configuration and a similar systems setup, the quality of eventual gravity field products can be expected to be in the same range as the current GRACE products. To guarantee the continuation of such successful gravity field time series ESA has embarked several years ago on a long term strategy for future gravity field satellite missions, both in terms of technology development and in terms of consolidating the user community. Scientists from academia and industry held a workshop on The Future of Satellite Gravimetry at ESTEC premises, 12-13 April 2007, (RD-9). Similar workshops have been organized by other organizations, e.g. the joint GGOS/IGCP565 workshop Towards a Roadmap for Future Satellite Gravity Missions in Graz, September 30 - October 2, 2009. ESA furthermore played a key role in consolidating the international user community by funding a series of study projects, cf. (RD-1) to (RD-5). Similar projects have been funded and conducted at national level, e.g. the German BMBF-funded Geotechnologies III project Concepts for future gravity field satellite missions (PI: N. Sneeuw). These studies, together with GRACE experience, have provided a clear understanding of the current limitations of a GRACE-type mission. In particular the limitations in sampling and sensitivity of a single pair of satellites with in-orbit in-line sensitivity are well documented. At the same time, these studies have shown the design options and a roadmap towards a next generation gravity field mission.

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