ANU GRACE analysis: software and mascon solutions

ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25911/61dceb9c03396&rft.title=ANU GRACE analysis: software and mascon solutions&rft.identifier=10.25911/61dceb9c03396&rft.publisher=The Australian National University&rft.description=The ANU GRACE software, developed in the Environmental Geodesy group at the Research School of Earth Sciences, is a suite of programs and scripts that processes the Level-1B data from the GRACE and GRACE Follow-On missions to estimate temporal variations in mass distribution on and within Earth. The analysis process involves integrating satellite orbits then estimating changes in mass on mass concentration elements (known as mascons) to provide a best-fitting set of parameters to match the observations of position, velocity and range acceleration between the two satellites. This repository will contain a number of different versions of solutions of the temporal gravity field and the software used to generate them: 2022-01-20: GRACE data 2003-2016 (solution ANU_mascons_RL01) (Allgeyer et al., 2022) 2024-03-26: GRACE (2003-2016) and GRACE-FO (2018-2023) (solution ANU_mascons_RL02) (McGirr et al. 2024) 1st Analysis of GRACE data: 2003-2016 (solution ANU_mascons_RL01) The analysis strategies used are described in the paper by Allgeyer et al (2022) and the development of the mascon geometry is described in Tregoning et al (2022): Allgeyer, S., P Tregoning, H. McQueen, S.C. McClusky, E.-K. Potter, J. Pfeffer, R. McGirr, A.P. Purcell, T.A. Herring and J.-P. Montillet, ANU GRACE data analysis: Orbit modelling, regularisation and inter-satellite range acceleration observations, Journal of Geophysical Research, https://doi.org/10.1029/2021JB022489, 2022. Tregoning, P., R. McGirr, J. Pfeffer, A.P. Purcell, H. McQueen, S. Allgeyer and S.C. McClusky, ANU GRACE data analysis: Characteristics and benefits of using irregularly shaped mascons, Journal of Geophysical Research, https://doi.org/10.1029/2021JB022412 2022. McGirr, R., P Tregoning, S. Allgeyer, H. McQueen and A.P. Purcell, Mitigation of thermal noise in GRACE accelerometer observations, Advances in Space Research, 69, 386-401, https://doi.org/10.1016/j.asr.2021.10.055, 2022. The software used for the analysis is provided in this repository (ANU_GRACE_software_RL01.tar.gz), along with the mascon file used (mascons_stage5_V006_200km). The estimated temporal gravity fields discussed in Allgeyer et al (2022) (solutions ANU_mascons_RL01_2003-2016.nc) are provided in netcdf format. 2nd Analysis of GRACE/GRACE-FO data: 2003-2016, 2018-2023 (solution ANU_mascons_RL02) The analysis strategies used are described in the paper by Allgeyer et al (2022) and the development of the mascon geometry is described in Tregoning et al (2022). The mascon solution has been used to investigate the ocean variations caused by ice and non-ice, continental mass changes: McGirr, R., P Tregoning, H. McQueen and A.P. Purcell, Significant local sea level variations caused by continental hydrology signals, Geophysical Research Letters, https://doi.org/10.1029/2024GL10839, 2024 We have made available the mascon file used (mascons_stage5_V010_200km.h5) and the mascon fingerprint file (mascons_stage5_V010_200km.fingerprints). The estimated temporal gravity fields discussed in McGirr et al (2022) (solutions ANU_mascons_RL02_2002-2023.h5) are provided. We also provide the monthly mascon solutions evaluated on a 0.25 degree global grid (ANU_mascons_RL02_2002-2023_grid.nc) Mascon Visualisation Tool The ANU mascon solutions can be viewed interactively here. The following functions are supported: Spatial maps at different epochs Time series of individual mascons Integrated total water storage change across a user-defined region movies of spatial patterns of temporal variations The visualisation tool was created with support of AuScope, in conjunction with CSIRO and Geoscience Australia. References Allgeyer, S., P Tregoning, H. McQueen, S.C. McClusky, E.-K. Potter, J. Pfeffer, R. McGirr, A.P. Purcell, T.A. Herring and J.-P. Montillet, ANU GRACE data analysis: Orbit modelling, regularisation and inter-satellite range acceleration observations, Journal of Geophysical Research,https://doi.org/10.1029/2021JB022489, 2022. McGirr, R., P Tregoning, S. Allgeyer, H. McQueen and A.P. Purcell, Mitigation of thermal noise in GRACE accelerometer observations, Advances in Space Research, 69, 386-401, https://doi.org/10.1016/j.asr.2021.10.055, 2022. Tregoning, P., R. McGirr, J. Pfeffer, A.P. Purcell, H. McQueen, S. Allgeyer and S.C. McClusky, ANU GRACE data analysis: Characteristics and benefits of using irregularly shaped mascons, Journal of Geophysical Research, https://doi.org/10.1029/2021JB022412 2022. McGirr, R., P Tregoning, H. McQueen and A.P. Purcell, Significant local sea level variations caused by continental hydrology signals, Geophysical Research Letters, https://doi.org/10.1029/2024GL10839, 2024. &rft.creator=Anonymous&rft.date=2022&rft.relation=&rft_rights=Creative Commons Licence is assigned to this data. Details of the licence can be found at http://creativecommons.org.au/licences.&rft_rights= http://www.gnu.org/licenses/gpl.html&rft_subject=Geodesy&rft_subject=Geophysics&rft_subject=EARTH SCIENCES&rft_subject=GRACE, space gravity, mascons, temporal gravity field&rft.type=Computer Program&rft.language=English Access the software