Further information is given in other pages such as “Products” or “Gravity Field Results”. GRACE-FO is a successor to the original GRACE mission, which orbited Earth from 2002-2017. GFZ’s monthly and weekly time-variable GRACE gravity field models are freely distributed in the form of GRACE Level-2 products, i.e. mean atmospheric and oceanic mass variations) which are necessary to interpret time variability in gravity field solutions.
Read more about “GRACE Operations”. <<0F5F58B5CFDF014482AF1D9482EEC52F>]>> as sets of spherical harmonic coefficients representing the Earth’s potential field for a dedicated time-period. Combined gravity field model EIGEN-CG01C complete to degree and order 360 from CHAMP, GRACE and surface gravity data, released on October 29, 2004. This System also coordinated the integration activities of all sensors, assuring their compatibility with each other and the satellite. 0000209872 00000 n pixel sizes of roughly 300-400 km at monthly intervals. For alternative GRACE products (outside the SDS) please go to the “Links” page. %%EOF
The latter is displayed in the figure below, where cumulated degree variances of the models’ calibrated errors are shown.
Combined gravity field model EIGEN-5C complete to degree and order 360 from GRACE, LAGEOS and surface gravity data, released on September 29, 2008. This becomes visible, e.g. Collectively, the processing from Level-0 to Level-1B is called the Level-1 Processing. x�bb�g`b``Ń3� ���ţ�A0 � %PDF-1.6 %���� The Level-2 processing software has been developed independently by all three processing centers. 0000186946 00000 n GRACE ground segment operations were co-funded by ESA. 0000222884 00000 n This level also includes the ancillary data products generated during this processing and the additional data needed for further processing (such as the Level-1B Atmosphere and Ocean De-aliasing Product (AOD1B). The operations team also monitors satellite performance and health throughout the duration of the mission. The LVS was managed by the DLR Launch Vehicle System Manager and supported by the JPL Project and its contractors. The GFZ RL05 time-series is being released since March 17, 2012 and has replaced its precursor RL04 after the monthly solution for April 2012. Level-2 data include the short term (monthly and weekly) and static gravity field derived from calibrated and validated GRACE Level-1B data products. Both archives are harmonized on a routine basis. 534 0 obj<>stream Routine processing is done at UTCSR and GFZ, while JPL is generating Level-2 products for verification purposes. Weekly models are only available for releases 04 and 05 and can be downloaded from the ISDC archive. They offer an increased resolution in time at the expense of decreased resolution in space. Satellite-only gravity field model EIGEN-GL04S1 complete to degree and order 150 from GRACE and LAGEOS data, released May 24, 2006. In this way the displayed plots give the "optimum" coverage possible. The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) is a continuation of the mission on near-identical hardware, launched in May 2018. s�4���k�:G���$�%0>`4��{��V8�g`�8���s��������%A��� ��� ��#u 4�� 0000002172 00000 n
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