RELATIVE SEA-LEVEL
; FIELD SOLUTIONS
; MASS VARIABILITY
; GRACE
; MODEL
; GPS
; RELEASE
; SCIENCE
; TRENDS
; OCEAN
WOS学科分类:
Geochemistry & Geophysics
WOS研究方向:
Geochemistry & Geophysics
英文摘要:
Earth observation satellites yield a wealth of data for scientific, operational and commercial exploitation. However, the redistribution of mass in the system Earth is not yet part of the standard inventory of Earth Observation (EO) data products to date. It is derived from the Gravity Recovery and Climate Experiment (GRACE) mission and its Follow-On mission (GRACE-FO). Among many other applications, mass redistribution provides fundamental insights into the global water cycle. Changes in continental water storage impact the regional water budget and can, in extreme cases, result in floods and droughts that often claim a high toll on infrastructure, economy and human lives. The initiative for a European Gravity Service for Improved Emergency Management (EGSIEM) established three different prototype services to promote the unique value of mass redistribution products for Earth Observation in general and for early-warning systems in particular. The first prototype service is a scientific combination service to derive improved mass redistribution products from the combined knowledge of the European GRACE analysis centres. Second, the timeliness and reliability of such products is a primary concern for any early-warning system and therefore EGSIEM established a prototype for a near real-time service that provides dedicated gravity field information with a maximum latency of 5 d. Third, EGSIEM established a prototype of a hydrological/early warning service that derives wetness indices as indicators of hydrological extremes and assessed their potential for timely scheduling of high-resolution optical/radar satellites for follow-up observations in case of evolving hydrological extreme events.
1.Univ Bern, Astron Inst, Sidlerstr 5, CH-3012 Bern, Switzerland 2.Leibniz Univ Hannover, Inst Erdmessung, Schneiderberg 50, D-30167 Hannover, Germany 3.Tech Univ Berlin, Dept Geodesy & Geoinformat Sci, Str 17 Juni 135, D-10623 Berlin, Germany 4.German Res Ctr Geosci, D-14473 Potsdam, Germany 5.Graz Univ Technol, Inst Geodesy, Steyrergasse 30-3, A-8010 Graz, Austria 6.Deutsch Zentrum Luft & Raumfahrt, German Remote Sensing Data Ctr, Munchener Str 20, D-82234 Wessling, Germany 7.Ctr Natl Etud Spatiales, Dept Terr & Planetary Geodesy, Ave E Belin 18, F-31401 Toulouse, France 8.Stellar Space Studies, F-31071 Toulouse, France 9.Lantmateriet, Geodetisk Infrastruktur, Lantmaterigatan 2c, S-80182 Gavle, Sweden 10.Univ Luxembourg, Geophys Lab, Rue Richard Coudenhove Kalergi, L-1359 Luxembourg, Luxembourg 11.NASA, Jet Prop Lab, 4800 Oak Grove Dr, Passadena, CA 91109 USA 12.Newcastle Univ, Geospatial Engn, G-15 Cassie Bldg, Newcastle NE1 7RU, England
Recommended Citation:
Jaggi, Adrian,Weigelt, M.,Flechtner, F.,et al. European Gravity Service for Improved Emergency Management (EGSIEM)-from concept to implementation[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2019-01-01,218(3):1572-1590