Статья

Extending the Global Mass Change Data Record: GRACE Follow‐On Instrument and Science Data Performance

Felix W. LandererJet Propulsion Laboratory California Institute of Technology Pasadena CA USAFrank FlechtnerFG Physical Geodesy Technische Universität Berlin Berlin GermanyHimanshu SaveCenter for Space Research The University of Texas at Austin Austin TX USAF. WebbJet Propulsion Laboratory California Institute of Technology Pasadena CA USATamara BandikovaJet Propulsion Laboratory California Institute of Technology Pasadena CA USAWilly BertigerJet Propulsion Laboratory California Institute of Technology Pasadena CA USASrinivas BettadpurCenter for Space Research The University of Texas at Austin Austin TX USASung ByunJet Propulsion Laboratory California Institute of Technology Pasadena CA USAChristoph DahleHelmholtz Centre Potsdam GFZ German Research Centre for Geosciences Potsdam GermanyHenryk DobslawHelmholtz Centre Potsdam GFZ German Research Centre for Geosciences Potsdam GermanyEugene G. FahnestockJet Propulsion Laboratory California Institute of Technology Pasadena CA USANate HarveyJet Propulsion Laboratory California Institute of Technology Pasadena CA USAZhigui KangCenter for Space Research The University of Texas at Austin Austin TX USAGerhard KruizingaJet Propulsion Laboratory California Institute of Technology Pasadena CA USABryant LoomisGeodesy and Geophysics Laboratory NASA Goddard Space Flight Center Greenbelt MD USAChristopher McCulloughJet Propulsion Laboratory California Institute of Technology Pasadena CA USAMichael MurböckFG Physical Geodesy Technische Universität Berlin Berlin GermanyPeter NagelCenter for Space Research The University of Texas at Austin Austin TX USAMeegyeong PaikJet Propulsion Laboratory California Institute of Technology Pasadena CA USANadège PieCenter for Space Research The University of Texas at Austin Austin TX USASteve PooleCenter for Space Research The University of Texas at Austin Austin TX USADmitry StrekalovJet Propulsion Laboratory California Institute of Technology Pasadena CA USAM. E. TamisieaCenter for Space Research The University of Texas at Austin Austin TX USAFurun WangCenter for Space Research The University of Texas at Austin Austin TX USAM. M. WatkinsJet Propulsion Laboratory California Institute of Technology Pasadena CA USAHui‐Ying WenJet Propulsion Laboratory California Institute of Technology Pasadena CA USAD. N. WieseJet Propulsion Laboratory California Institute of Technology Pasadena CA USADah‐Ning YuanJet Propulsion Laboratory California Institute of Technology Pasadena CA USA

2020en

ABI

Аннотация

Abstract Since June, 2018, the Gravity Recovery and Climate Experiment Follow‐On (GRACE‐FO) is extending the 15‐year monthly mass change record of the GRACE mission, which ended in June 2017. The GRACE‐FO instrument and flight system performance has improved over GRACE. Better attitude solutions and enhanced pointing performance result in reduced fuel consumption and gravity range rate post‐fit residuals. One accelerometer requires additional calibrations due to unexpected measurement noise. The GRACE‐FO gravity and mass change fields from June 2018 through December 2019 continue the GRACE record at an equivalent precision and spatiotemporal sampling. During this period, GRACE‐FO observed large interannual terrestrial water variations associated with excess rainfall (Central US, Middle East), drought (Europe, Australia), and ice melt (Greenland). These observations are consistent with independent mass change estimates, providing high confidence that no intermission biases exist from GRACE to GRACE‐FO, despite the 11‐month gap. GRACE‐FO has also successfully demonstrated satellite‐to‐satellite laser ranging interferometry.

Перевод пока недоступен

Идентификаторы

DOI: 10.1029/2020gl088306

Цитирования и источники

Цитирований: 3Использованных источников: 0

Показатели — AkademScholar