John Ries
YOU?
Author Swipe
View article: Determination of the time-variable geopotential by means of orbiting clocks
Determination of the time-variable geopotential by means of orbiting clocks Open
Monitoring the time-variable geopotential identifies the mass redistribution across the Earth and reveals, e.g., climate change and availability of water resources. The features of interest are characterized by spatial and temporal scales …
View article: Measuring 1-mm-accurate local survey ties over kilometer baselines at McDonald Geodetic Observatory
Measuring 1-mm-accurate local survey ties over kilometer baselines at McDonald Geodetic Observatory Open
The goal for the next generation of terrestrial reference frames (TRF) is to achieve a 1-mm- and 0.1-mm/yr-accurate frame realization through the combination of reference station solutions by multi-technique geodetic observatories. A poten…
View article: C<sub>20</sub> and C<sub>30</sub> Variations From SLR for GRACE/GRACE‐FO Science Applications
C<sub>20</sub> and C<sub>30</sub> Variations From SLR for GRACE/GRACE‐FO Science Applications Open
It is essential that the Satellite Laser Ranging (SLR) estimates of C 20 and C 30 are as reliable as possible for GRACE and GRACE Follow‐on science applications. Experiments in combining SLR and GRACE data indicated that not accounting for…
View article: Gender effects of project assessment: Evidence from a market simulation
Gender effects of project assessment: Evidence from a market simulation Open
We investigate how males and females perform as entrepreneurs and traders using information on the trading activities of students participating in a business game in two university courses. In one course, students create entrepreneurial ve…
View article: EOF analysis of the monthly gravity fields from GRACE and GRACE-FO&#160;
EOF analysis of the monthly gravity fields from GRACE and GRACE-FO  Open
<p>Empirical Orthogonal Function (EOF) analysis is applied to study the spatial structure and temporal feature of the time series of the global EWH from GRACE/GRACE-FO-derived gravity fields. The scaled PC time series for the corresp…
View article: SLR sliding window solutions with daily sampling for replacing GRACE/GRACE-FO C20 and C30
SLR sliding window solutions with daily sampling for replacing GRACE/GRACE-FO C20 and C30 Open
<p>The recovery of Earth&#8217;s time variable gravity field from satellite data relied on Satellite Laser Ranging (SLR) before missions like the Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (FO). Currently…
View article: Combined Gravity Solution from SLR and GRACE/GRACE-FO
Combined Gravity Solution from SLR and GRACE/GRACE-FO Open
The recovery of Earth’s time variable gravity field from satellite data relied heavily on Satellite Laser Ranging (SLR) before the recent GRACE and GRACE Follow-On satellite gravity missions. Currently, the monthly gravity solutions from G…
View article: Intercomparisons of CSR GRACE-FO Solutions with External Data Sets
Intercomparisons of CSR GRACE-FO Solutions with External Data Sets Open
<p>To assess the quality of the CSR solutions, we compare results against external data sets that have contemporaneous availability.&#160; These evaluations fall into three categories: changes in terrestrial water storage against…
View article: GLOBAL GEODETIC OBSERVING SYSTEM— CONSIDERATIONS FOR THE GEODETIC NETWORK INFRASTRUCTURE
GLOBAL GEODETIC OBSERVING SYSTEM— CONSIDERATIONS FOR THE GEODETIC NETWORK INFRASTRUCTURE Open
Properly designed and structured ground-based geodetic networks materialize the reference systems to support sub-millimetre global change measurements over space, time, and evolving technologies. The Ground Networks and Communications Work…
View article: Satellite Laser-Ranging as a Probe of Fundamental Physics
Satellite Laser-Ranging as a Probe of Fundamental Physics Open
Satellite laser-ranging is successfully used in space geodesy, geodynamics and Earth sciences; and to test fundamental physics and specific features of General Relativity. We present a confirmation to approximately one part in a billion of…
View article: Quantification of Ocean Mass Change Using Gravity Recovery and Climate Experiment, Satellite Altimeter, and Argo Floats Observations
Quantification of Ocean Mass Change Using Gravity Recovery and Climate Experiment, Satellite Altimeter, and Argo Floats Observations Open
We analyze global mean ocean mass (GMOM) change over the 12‐year period (January 2005 to December 2016) using three different Gravity Recovery and Climate Experiment (GRACE) RL05 monthly time‐variable gravity solutions and compare GRACE re…
View article: Decadal variation in Earth's oblateness (J2) from satellite laser ranging data
Decadal variation in Earth's oblateness (J2) from satellite laser ranging data Open
For four decades, satellite laser ranging has recorded the global nature of the long-wavelength hydrological mass redistribution within the Earth system, which results in significant variations in the Earth's dynamical oblateness, characte…
View article: School quality and residential values : evidence from Vancouver zoning
School quality and residential values : evidence from Vancouver zoning Open
This study exploits changes in the catchment areas of public schools in Vancouver, British Columbia to measure the house price capitalization of school quality. Using repeat sales methods to control for time invariant neighborhood effects …
View article: LARES satellite thermal forces and a test of general relativity
LARES satellite thermal forces and a test of general relativity Open
We summarize a laser-ranged satellite test of frame dragging, a prediction of General Relativity, and then concentrate on the estimate of thermal thrust, an important perturbation affecting the accuracy of the test. The frame dragging stud…
View article: The Development and Evaluation of the Global Gravity Model GGM05
The Development and Evaluation of the Global Gravity Model GGM05 Open
The GGM05 model suite consists of three mean Earth gravity field models: 1) GGM05S based only on GRACE data, 2) GGM05G based on the combination of GRACE and GOCE, and 3) GGM05C based on the combination of GGM05G and surface gravity data. G…