Variations in the Earth's oblateness during the past 28 years

By M. Cheng, Byron D. Tapley. 2004

496 citations recorded by the source corpus.

Subfields: Global and Planetary Change, Oceanography

View Paper: https://www.semanticscholar.org/paper/349ed209b371870262456d74499df5262e20063d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Global and Planetary Change

In Oceanography

Citations in the corpus

Observing seasonal steric sea level variations with GRACE and satellite altimetry (2006, methodology): “of SLR tracking to geodetic satellites [Cheng and Tapley, 2004].”
Antarctic contribution to sea level rise observed by GRACE with improved GIA correction (2013, methodology): “In addition, we employ information from satellite laser ranging (SLR) studies [Cheng and Tapley, 2004; Cheng et al., 2013] for properly restoring the low-order zonals PNCS200, PNCS300, PNCS400, as recommended by Bettadpur [2007], and in GRACE Technical Note 05 (update as of 12 June 2012) for the…”
Increasing rates of ice mass loss from the Greenland and Antarctic ice sheets revealed by GRACE (2009, methodology): “The GRACE C20 coefficients, which are proportional to the Earth’s oblateness, show anomalously large variability, so we replace them with values derived from satellite laser ranging [Cheng and Tapley, 2004].”
Improved methods for observing Earth's time variable mass distribution with GRACE using spherical cap mascons (2015, methodology): “All data have been processed such that the C20 coefficients have been replaced with an SLR-derived value [Cheng and Tapley, 2004], degree 1 terms have been calculated according to Swenson et al. [2008], and glacial isostatic adjustment (GIA) signals have been removed using the Paulson model…”
High‐resolution CSR GRACE RL05 mascons (2016, methodology): “We have replaced the C20 values in the mascon estimates with the estimates from SLR analysis [Cheng and Tapley, 2004], and the contribution of the geocenter has been corrected in accordance with the estimates from Swenson et al. [2008] to ensure consistency in the results obtained from different…”
Glacial isostatic adjustment modelling: historical perspectives, recent advances, and future directions (2018, background): “If these processes can be quantified (e.g. Gross and Vondrak, 1999;Cheng and Tapley, 2004) they can be used to place constraints on lower mantle viscosity (e.g. Paulson et al., 2007b;Mitrovica and Wahr, 2011;Mitrovica et al., 2015).”
Recent contributions of glaciers and ice caps to sea level rise (2012, methodology): “We use monthly values of C 20 (the zonal, degree-2 spherical harmonic coefficient of the geopotential) from satellite laser rangin”
Evaluation of Release-05 GRACE time-variable gravity coefficients over the ocean (2012, methodology): “The monthly degree 2, order 0 coefficients estimated with GRACE are replaced with those from a satellite laser ranging analysis (Cheng and Tapley, 2004), due to significant errors in observing that coefficient with GRACE.”
Closing the sea level rise budget with altimetry, Argo, and GRACE (2009, methodology): “Therefore, we compute ocean mass variations by replacing the degree 2, order 0 coefficients with those from an SLR analysis [ Cheng and Tapley, 2004 ] and adding an estimate of seasonal geocenter motion [Chen et al., 1999] to account for the degree 1 components of the gravity field.”
Greenland mass balance from GRACE (2005, methodology): “The GRACE C20 coefficients show anomalously large variability in the first few months, so we replace them with values derived by Cheng and Tapley [2004] from satellite laser ranging data. The Stokes coefficients can be used to solve for monthly gravity field changes, and thus to estimate monthly var”
Estimating geocenter variations from a combination of GRACE and ocean model output (2008, methodology): “Figure 7 (bottom) shows the improvement in the comparison if the GRACEOMCT geocenter solution is used instead of the SLR solution.”
Deceleration in the Earth's oblateness (2013, methodology): “Similar variations were found to occur during the period of 1986–1991, and another interannual cycle was also found to start in late 2002 [Cheng and Tapley, 2004].”