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View article: GCL-Mascon2024: a novel satellite gravimetry mascon solution using the short-arc approach
GCL-Mascon2024: a novel satellite gravimetry mascon solution using the short-arc approach Open
This paper reports on an innovative mass concentration (mascon) solution obtained with the short-arc approach, named “GCL-Mascon2024”, for estimating spatially enhanced mass variations on the Earth's surface by analyzing K- and Ka-band ran…
View article: Application of bedrock elastic deformation data to study meltwater transportation in Greenland
Application of bedrock elastic deformation data to study meltwater transportation in Greenland Open
For the first time, we apply bedrock elastic deformation data to study meltwater transportation within the Greenland Ice Sheet (GrIS). We consider the vertical component of the deformations extracted from GPS data records acquired by the G…
View article: Computation of a global mascon solution from satellite gravimetry data
Computation of a global mascon solution from satellite gravimetry data Open
We present an innovative global mass concentration (mascon) solution, "GCL-Mascon2024", derived using the short-arc approach to estimate spatially enhanced mass variations on the Earth's surface. This monthly solution is based on K-/Ka-ban…
View article: GCL-Mascon2024: a novel satellite gravimetry mascon solution using the short-arc approach
GCL-Mascon2024: a novel satellite gravimetry mascon solution using the short-arc approach Open
This paper reports an innovative mass concentration (mascon) solution obtained with the short-arc approach, named “GCL-Mascon2024”, for estimating spatially enhanced mass variations on the Earth's surface by analyzing K-/Ka Band Ranging sa…
View article: Precise estimation of regional mass trends in Greenland using a global regularized inversion of level-2 data from GRACE/GFO satellite missions
Precise estimation of regional mass trends in Greenland using a global regularized inversion of level-2 data from GRACE/GFO satellite missions Open
The Greenland Ice Sheet (GrIS) has been a major single contributor to global sea level rise in recent decades, so that making accurate projections of its future behavior is a highly relevant task both for scientific community and for the h…
View article: Optimization of GRACE-based mass anomaly estimates using the first-order Tikhonov regularization, with application to the Greenland Ice Sheet
Optimization of GRACE-based mass anomaly estimates using the first-order Tikhonov regularization, with application to the Greenland Ice Sheet Open
It is common to convert GRACE-based level-2 data product (spherical harmonic coefficients) into mass anomalies at the Earth’s surface using spherical harmonic synthesis. We claim that it is more appropriate to use for that purpose a …
View article: Water-related vertical displacements for all GNET stations studied
Water-related vertical displacements for all GNET stations studied Open
Water-related vertical displacements for all GNET stations studied. Vertical displacement time-series from the proposed analytic model, based on calibrated buffered water storage estimates.(1 column: Time; 2 column: Vertical displacement; …
View article: Water-related vertical displacements for all GNET stations studied
Water-related vertical displacements for all GNET stations studied Open
Water-related vertical displacements for all GNET stations studied. Vertical displacement time-series from the proposed analytic model, based on calibrated buffered water storage estimates.(1 column: Time; 2 column: Vertical displacement; …
View article: Estimation of mass variations within Greenland by an inversion of GRACE/GFO spherical harmonic coefficients into a global set of mascon-type mass anomalies
Estimation of mass variations within Greenland by an inversion of GRACE/GFO spherical harmonic coefficients into a global set of mascon-type mass anomalies Open
<p>Satellite gravimetry is one of the primary tools to monitor mass variations of ice sheets. In this study, we apply data from GRACE and GRACE Follow-on (GFO) missions to quantify ice mass variations per Drainage Basin (DB) of the G…
View article: How to quantify the accuracy of mass anomaly time-series based on GRACE data in the absence of knowledge about true signal?
How to quantify the accuracy of mass anomaly time-series based on GRACE data in the absence of knowledge about true signal? Open
A novel technique has been developed to assess noise levels in GRACE-based mass anomaly time-series when the true signal is not known. The technique is based on computing an optimal combination of analyzed time-series in the presence of a …
View article: Sparse DDK: A Data-Driven Decorrelation Filter for GRACE Level-2 Products
Sparse DDK: A Data-Driven Decorrelation Filter for GRACE Level-2 Products Open
High-frequency and correlated noise filtering is one of the important preprocessing steps for GRACE level-2 products before calculating mass anomaly. Decorrelation and denoising kernel (DDK) filters are usually considered as such optimal f…
View article: GPS data reveal the evolution of liquid water &#160;retention within the Greenland Ice Sheet at the seasonal and inter-annual time scale
GPS data reveal the evolution of liquid water  retention within the Greenland Ice Sheet at the seasonal and inter-annual time scale Open
<p>The Greenland ice sheet (GrIS) is currently losing mass, as a result of complex mechanisms of ice-climate interaction that need to be understood for reliable projections of future sea level rise. Previous authors have intensively …
View article: Analysis and Mitigation of Biases in Greenland Ice Sheet Mass Balance Trend Estimates From GRACE Mascon Products
Analysis and Mitigation of Biases in Greenland Ice Sheet Mass Balance Trend Estimates From GRACE Mascon Products Open
Mascon products derived from Gravity Recovery and Climate Experiment satellite gravimetry data are widely used to study the Greenland ice sheet mass balance. However, the products released by different research groups—JPL, CSR, and GSFC—sh…
View article: Improved recovery of temporal variations of the Earth’s gravity field from satellite kinematic orbits using an epoch-difference scheme
Improved recovery of temporal variations of the Earth’s gravity field from satellite kinematic orbits using an epoch-difference scheme Open
To monitor temporal variations of the Earth’s gravity field and mass transport in the Earth’s system, data from gravity recovery and climate experiment (GRACE) satellite mission and its successor GRACE Follow-On (GFO) are used. To fill in …
View article: Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results
Evaluating GRACE Mass Change Time Series for the Antarctic and Greenland Ice Sheet—Methods and Results Open
Satellite gravimetry data acquired by the Gravity Recovery and Climate Experiment (GRACE) allows to derive the temporal evolution in ice mass for both the Antarctic Ice Sheet (AIS) and the Greenland Ice Sheet (GIS). Various algorithms have…
View article: Using GRACE to Explain Variations in the Earth's Oblateness
Using GRACE to Explain Variations in the Earth's Oblateness Open
We present a new approach to estimate time variations in J 2 . Those variations are represented as the sum of contributions from individual sources. This approach uses solely Gravity Recovery And Climate Experiment (GRACE) data and the geo…
View article: Seasonal mass variations show timing and magnitude of meltwater storage in the Greenland Ice Sheet
Seasonal mass variations show timing and magnitude of meltwater storage in the Greenland Ice Sheet Open
The Greenland Ice Sheet (GrIS) is currently losing ice mass. In order to accurately predict future sea level rise, the mechanisms driving the observed mass loss must be better understood. Here, we combine data from the satellite gravimetry…
View article: Improvements in the Monthly Gravity Field Solutions Through Modeling the Colored Noise in the GRACE Data
Improvements in the Monthly Gravity Field Solutions Through Modeling the Colored Noise in the GRACE Data Open
The Gravity Recovery And Climate Experiment (GRACE) mission has achieved a quantum leap in knowledge of the Earth's gravity field. However, current gravity field solutions still cannot reach the prelaunch baseline accuracy. One of the reas…
View article: Optimal mascon geometry in estimating mass anomalies within Greenland from GRACE
Optimal mascon geometry in estimating mass anomalies within Greenland from GRACE Open
The mascon approach is a well-known technique to estimate mass anomalies in Greenland using GRACE satellite gravity data. It partitions the area of interest into laterally-homogeneous patches (mascons). An important aspect of the mascon ap…
View article: Seasonal mass variations show timing and magnitude of meltwaterstorage in the Greenland ice sheet
Seasonal mass variations show timing and magnitude of meltwaterstorage in the Greenland ice sheet Open
The Greenland Ice Sheet (GrIS) is currently losing ice mass as the result of changes in the complex ice-climate interactions that have been driven by global climate change. In order to accurately predict future sea level rise, the mechanis…
View article: Geocentre motion and Earth's dynamic oblateness time-series derived from GRACE CSR RL06 solutions and geophysical models
Geocentre motion and Earth's dynamic oblateness time-series derived from GRACE CSR RL06 solutions and geophysical models Open
With the launch of the Gravity Recovery and Climate Experiment (GRACE) satellite mission in 2002 (http://www.csr.utexas.edu/grace), Satellite Gravimetry has become a unique tool to estimate hydrological water balance and mass balance of ic…
View article: Regularization and analysis of GRACE mass anomaly time series by a minimization of month-to-month year-to-year double differences
Regularization and analysis of GRACE mass anomaly time series by a minimization of month-to-month year-to-year double differences Open
A methodology has been developed to estimate the accuracy of GRACE monthly solutions as functions of space or time without using independent geophysical models. An application of the methodology to several commonly-used solution time-serie…
View article: Statistically optimal estimation of Greenland Ice Sheet mass variations from GRACE monthly solutions using an improved mascon approach
Statistically optimal estimation of Greenland Ice Sheet mass variations from GRACE monthly solutions using an improved mascon approach Open
We present an improved mascon approach to transform monthly spherical harmonic solutions based on GRACE satellite data into mass anomaly estimates in Greenland. The GRACE-based spherical harmonic coefficients are used to synthesize gravity…
View article: Statistically optimal estimation of degree-1 and C20 coefficients based on GRACE data and an ocean bottom pressure model
Statistically optimal estimation of degree-1 and C20 coefficients based on GRACE data and an ocean bottom pressure model Open
In this study, we develop a methodology to estimate monthly variations in degree-1 andC20 coefficients by combing Gravity Recovery and Climate Experiment (GRACE) data withoceanic mass anomalies (combination approach).With respect to the me…
View article: Improving estimates of water resources in a semi-arid region by assimilating GRACE data into the PCR-GLOBWB hydrological model
Improving estimates of water resources in a semi-arid region by assimilating GRACE data into the PCR-GLOBWB hydrological model Open
An accurate estimation of water resources dynamics is crucial for proper management of both agriculture and the local ecology, particularly in semi-arid regions. Imperfections in model physics, uncertainties in model land parameters and me…