https://doi.org/10.1029/2020GL088306. Geophysical Research Letters, 47, e2020GL088306. The Gravity Recovery and Climate Experiment (GRACE) mission has demonstrated the ability to synoptically monitor the temporal and spatial variations in total water content over continental areas, providing a key measurement which can improve our knowledge and understanding of the water cycle. JPL has released its latest Level-3 Mascon data products, spanning the entire GRACE mission duration: 04/2002 - 07/2017, as well as GRACE-FO (06/2018 - current). GRACE, GRACE-FO Satellite Data Track Ice Loss at the Poles During the exceptionally warm Arctic summer of 2019, Greenland lost 600 billion tons of ice - enough to raise global sea levels by nearly a tenth of an inch (2.2 millimeters) in just two months, a new study shows. Klimawandel ins Visi… Changes in terrestrial water storage especially with regard to ground water, are poorly known and sparsely sampled. These data sets will be expanded with the most recent monthly data as it becomes available (approx. However, by using solutions restricted to local regions as an alternative and through the application of accurate forward models (to eliminate tidal and atmospheric pressure mass flux signals), we have developed a highly accurate technique for monitoring continental water mass storage. GRACE ermöglicht es auch, aus den angesammelten Messdaten Änderungen des Geoids mit hoher Präzision festzustellen. 45 day latency). Follow link above for details and d... JPL has released it's latest Mascon data products, spanning the entire GRACE mission duration: 04/2002 - 07/2017. Sendung. Through a unique and well tested solution formulation, our group proposes to provide sub-monthly measures of the change in continental water storage based on the GRACE intersatellite range-rate measurements. These discoveries provide a unique view of Earth's climate and have far-reaching benefits to society and the world's population. One of the twin GRACE satellites, Flight Model 1, is seen on a trolley during construction in Germany. "Satelliten-Mission - Wie GRACE die Erde beobachtet": in IQ - Wissenschaft und Forschung, Bayern 2, 10.11.2017, 18.05 Uhr. The Gravity Recovery And Climate Experiment (GRACE) satellite mission has provided valuable information towards understanding the continental to regional scale hydrology [1,2]. Land water storage from GRACE is updated monthly, and is provided on 1-degree global grids. The GRACE twin satellites, launched 17 March 2002, are making detailed measurements of Earth's gravity field changes & revolutionizing investigations about Earth's water reservoirs over land, ice & oceans, as well as earthquakes and crustal deformations. Page Last Updated: Feb 18, 2020 at 1:32 PM EST, Earth Science Data Systems (ESDS) Program, Advancing Collaborative Connections for Earth System Science (ACCESS) Program, AMAPS: An Aerosol Measurement and Processing System, ACPS: Atmospheric Composition Processing System, Web Services for On-Demand Multi-Sensor Gridded Atmospheric Radiance Fields, Deployable Suite of Data Mining Web Services for Online Data Repositories, SESDI: Semantically-Enabled Scientific Data Integration, Software Access to HDF5 Datasets via OPeNDAP DAP, Development and Deployment of a CEOP Satellite Data Server, High Spatial and Temporal Resolution Continental Water Mass Anomaly Fields from GRACE, NASA ESD Support System and Services for the Northern Eurasian Earth Science Partnership Initiative, Building a Community Land Cover Change Processing System, DIAL: Data and Information Application Layer, Helping NACP Investigators better utilize MODIS products, Discovery, Access, and Delivery of Data for the IPY, Modeling and On-the-fly Solutions in Solid Earth Science. GRACE satellites are mounted belly to belly at an IABG testing facility in Germany. The monthly gravity anomalies maps generated by GRACE are up to 1,000 times more accurate than previous maps, substantially improving the accuracy of many techniques used by oceanographers, hydrologists, glaciologists, geologists and other scientists to study phenomena that influence climate. Diese Seite wurde zuletzt am 23. Der Doppelsatellit Gravity Recovery And Climate Experiment (GRACE) ist ein Projekt zur genauen Bestimmung des Erdschwerefeldes in einer niedrigen Umlaufbahn. Greenland's Steenstrup Glacier, with the midmorning sun glinting off the Denmark Strait in the background. GRACE Follow-On monthly maps of terrestrial water storage and ocean bottom pressure changes (Level-3 'Tellus' grids) are now available from June-2018 through June-2019. Although monthly gravity models have produced intriguing results, information at submonthly time scales is lost and spatial and temporal aliasing through the estimation of static global parameters has been a major stumbling block for the exploitation of the GRACE data. In this contribution, we assess the spatial resolution both theoretically and practically. GRACE resolves the mass balance of grounded ice sheets, glaciers and ice caps. We confirm that, theoretically, the smallest resolvable catchment is directly related to the band-limit of the spherical harmonic spectrum of the GRACE data. ), National Aeronautics and Space Administration, Deutsches Zentrum für Luft- und Raumfahrt, Gottfried Wilhelm Leibniz Universität Hannover, Helmholtz-Zentrum Potsdam – Deutsches GeoForschungsZentrum, Deutsches Zentrum für Luft- und Raumfahrt – GRACE, The University of Texas at Austin – GRACE, German Research Centre for Geosciences – GRACE, „Paarlauf in der Erdbahn“ - Artikel zu GRACE auf dem Geowissenschaften-Portal planeterde, Weblink zu Orbit und Sichtbarkeit von Satelliten (Die GRACE-Satelliten sind zwei Mal pro Jahr mit bloßem Auge sichtbar), Bildarchiv für Journalisten auf der Homepage des GFZ, Spacewatch: twin research satellites head for burn-out, The institute of geodesy in the cluster of excellence QUEST, SpaceX's tweet confirming successful deployment of the GRACE-FO satellites, Astrium baut zwei neue Forschungssatelliten für NASA, Gravity Recovery and Climate Experiment-Follow-On (GRACE-FO) Mission, First GRACE Follow-On Satellite Completes Construction, Satelliten vermessen den Welt-Wasserhaushalt, https://de.wikipedia.org/w/index.php?title=Gravity_Recovery_And_Climate_Experiment&oldid=203017783, „Creative Commons Attribution/Share Alike“. Continuous monitoring of glaciers and ice caps has provided unprecedented insights to global ice loss that could have serious socioeconomic impacts on some regions. The satellites use a precise microwave ranging system to measure the distance between themselves due to gravitational acceleration. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind. To date, GRACE has principally been used improve both stationary and monthly-resolved spherical harmonic models of the gravity field. Current version: RL06M.MSCNv02. (2020). These mass anomalies will be provided along with comparable hydrological estimates (from Global Land Data Assimilation System, Rodell et al., 2004). The image was taken during a NASA IceBridge airborne survey of the region in 2016. Credit: NASA/Operation IceBridge. Through a unique and well tested solution formulation, our group proposes to provide sub-monthly measures of the change in continental water storage based on the GRACE intersatellite range-rate measurements. Scientists have gained new insights into the processes that have driven ocean level variations for over a century, helping us prepare for the rising seas of the future. Groundwater is a useful indicator of climate variability and human impacts on the environment. These mass flux estimates will fill a critical gap in achieving a more complete understanding of the Earth's hydrological system. NMP/EO-3/GIFTS (Proj. We have produced 10-day estimates of 4ºx4º mass flux anomalies [Rowlands et al., 2005]. NASA.gov brings you the latest images, videos and news from America's space agency. Monthly harmonic models have been used as a proof of concept to demonstrate the resolving power of GRACE to monitor mass flux globally [Wahr et al., 2004; Tapley et al., 2004]. The GRACE-FO Science Data System team has published a mission baseline reference paper, characterizing the instrument, flight system and science data performance over the first two years since launch: Landerer, F. W., Flechtner, F. M., Save, H., Webb, F. H., Bandikova, T., Bertiger, W. I., et al. Therefore, the effective spatial resolution at which we can obtain mass changes from GRACE products is an area of debate. JPL's global mascons (land water storage & ocean bottom pressure) from GRACE & GRACE-FO are updated monthly, and are provided on 0.5-degree global grid. Principal Investigator (PI): David Rowlands, NASA's Goddard Space Flight CenterCo-Investigators (Co-PI): Steve Klosko, Mark Sherman - Stinger Ghaffarian Technologies (SGT)/Goddard. Kontext. During the exceptionally warm Arctic summer of 2019, Greenland lost 600 billion tons of ice - enough to raise global sea levels by nearly a tenth of an inch (2.2 millimeters) in just two months, a new study shows. The data browser allows the interactive retrieval of GRACE/GRACE-FO Land & Ocean data: evaluate time series over large river basins, compute long-term trends and mean seasonal amplitudes! The Gravity Recovery and Climate Experiment (GRACE) refers to a pair of NASA satellites that has flown in low-Earth orbit since 2002. Extending the global mass change data record: GRACE Follow‐On instrument and science data performance. These anomalies will have a resolution of 4ºx4º and will be provided every 10 days over the period of the GRACE mission. GRACE measures sea level rise from melting ice, changes in deep ocean currents. Dadurch kommen neue Aspekte der Geodynamik und unabhängige Untersuchungsmethoden für Ozeanografie und evtl. August 2020 um 08:17 Uhr bearbeitet. GRACE yields insights into Solid Earth changes from earthquakes glacial isostatic adjustment. Launching in 2017, GRACE Follow-on (GRACE-FO) will continue GRACE's legacy of tracking Earth's water movement to monitor changes in underground water storage, the amount of water stored in large lakes and rivers, soil moisture, ice sheets and glaciers, and sea level caused by the addition of water to the ocean. Upon eliminating atmospheric and tidal mass variations, detailed understanding of terrestrial water storage at scales comparable to medium to large aquifers, can be directly monitored. These estimates of terrestrial water storage are valuable for predicting biological and agricultural productivity, flooding, and the level of sustainability or depletion of ground water systems. Follow link above for details and download links.
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