A5039985236- Geophysics and Gravity Measurements
- Oceanographic and Atmospheric Processes
- Hydrology and Watershed Management Studies
- Flood Risk Assessment and Management
- Climate variability and models
- GNSS positioning and interference
- Hydrology and Drought Analysis
- Arctic and Antarctic ice dynamics
- Planetary Science and Exploration
- Space Exploration and Technology
- Cryospheric studies and observations
- Inertial Sensor and Navigation
- Solar and Space Plasma Dynamics
- Geological and Geophysical Studies
- Meteorological Phenomena and Simulations
- Hydrological Forecasting Using AI
- Ocean Waves and Remote Sensing
- Geophysical and Geoelectrical Methods
- earthquake and tectonic studies
- Ionosphere and magnetosphere dynamics
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- Space Science and Extraterrestrial Life
- Tropical and Extratropical Cyclones Research
- Synthetic Aperture Radar (SAR) Applications and Techniques
Wuhan University
2014-2024
Institute of Geodesy and Geophysics
2014-2024
Ministry of Natural Resources
2020-2023
Wuchang University of Technology
2019
The Ohio State University
2009-2014
The accuracy of state-of-the-art global barotropic tide models is assessed using bottom pressure data, coastal gauges, satellite altimetry, various geodetic data on Antarctic ice shelves, and independent tracked orbit perturbations.Tide under review include empirical, purely hydrodynamic ("forward"), assimilative dynamical, i.e., constrained by observations.Ten dominant tidal constituents in the diurnal, semidiurnal, quarter-diurnal bands are considered.Since last major model comparison...
Water level monitoring is important for understanding the global hydrological cycle. Remotely-sensed indices that capture localized instantaneous responses have been extensively explored water reconstruction during past two decades. However, potential usage of Palmer’s Drought Severity Index (PDSI) and El Niño Southern Oscillation (ENSO) prediction has not explored. This paper examines relationship between observed PDSI based on a soil-moisture balance model three ENSO lower Mekong River...
Based on a geophysical model for elastic loading, the application potential of Global Positioning System (GPS) vertical crustal displacements inverting terrestrial water storage has been demonstrated using Tikhonov regularization and Helmert variance component estimation since 2014. However, GPS-inferred larger resulting amplitudes than those inferred from satellite gravimetry (i.e., Gravity Recovery Climate Experiment (GRACE)) simulated hydrological models (e.g., Land Data Assimilation...
Mass redistribution of the Earth causes variable loading that deforms solid Earth. While most recent studies using geodetic techniques focus on regions (such as Amazon basin and Nepal Himalayas) with large seasonal deformation amplitudes order 1-4 cm due to hydrologic loading, few such have been conducted where amplitude is half large. Here, we use joint GPS GRACE data investigate vertical in North China Plain, significant groundwater depletion has reported. We found GPS- GRACE-derived...
This study uses the observed vertical displacements of Global Positioning System (GPS) time series obtained from Crustal Movement Observation Network China (CMONOC) with careful pre- and post-processing to estimate seasonal crustal deformation in response hydrological loading lower three-rivers headwater region southwest China, followed by inferring annual EWH changes through geodetic inversion methods. The Helmert Variance Component Estimation (HVCE) Minimum Mean Square Error (MMSE)...
Mass redistribution within the Earth system deforms surface elastically. Loading theory allows us to predict loading induced displacement anywhere on Earth’s using environmental models, e.g., Global Land Data Assimilation System. In addition, different publicly available products are available. However, there differences among those and combinations of models cannot be ignored when precisions better than 1 cm required. Many scholars have applied these corrections Navigation Satellite System...
Total basin runoff has been estimated via satellite-hydrologic observations since 2000 due to the high maintenance cost of in situ measurements and existence many ungauged river basins. Previous estimates have done by simply averaging each gridded within a generated from data products water balance equation. Nonetheless, geographical heterogeneities are present, which should be considered when estimating runoff. This study proposes novel geographically-weighted approach estimate Our Mekong...
Abstract Two methods to assess ocean tide models, the current method and total discrepancy method, are compared from perspective of their relationship root-mean-square difference tidal sea surface height (total discrepancy). These two identically same when there is only one spatial location involved. When more than involved, at each location, averaged discrepancy. The result always larger or equal that method. Monte Carlo simulation indicates between results increases with increasing...
The use of satellite radar altimetry has long been extended to areas other than the deep-ocean primarily because advances in waveform retracking methodologies.However, algorithms are limited a handful shapes return echoes over assumed known surfaces, while numerous unknown waveforms exist due complexity real-world land cover and surfaces.Measurements surface with seasonal or ephemeral patterns could thus degrade accuracy varying characteristics from corresponding backscatters.In this study,...
Abstract It has been more than a decade since the last comprehensive accuracy assessment of global ocean tide models. Here, we conduct an evaluation barotropic corrections, which were computed using FES2004 and GOT00.2, other models on Jason-2 altimetry Geophysical Data Record (GDR), with focus selected coastal regions energetic dynamics. We compared nine historical contemporary pelagic tidal constants multiple satellite mission (T/P, ERS-1/-2, Envisat, GFO, Jason-1/-2) sea level anomalies...
The use of satellite radar altimetry has long been extended to areas other than the deep-ocean primarily because advances in waveform retracking methodologies. However, algorithms are limited a handful shapes return echoes over assumed known surfaces, while numerous unknown waveforms exist due complexity real-world land cover and surfaces. Measurements surface with seasonal or ephemeral patterns could thus degrade accuracy varying characteristics from corresponding backscatters. In this...
Total basin discharge is a critical component for the understanding of surface water exchange at land-ocean interface. A continuous decline in number global hydrological stations over past fifteen years has promoted estimation total using remote sensing. Previous remotely sensed Yangtze River basin, expressed terms runoff, was estimated via balance equation, combination sensing and modeled data products various qualities. Nevertheless, are presented with large uncertainties seasonal error...
The monitoring of hydrological extremes requires water level measurement. Owing to the decreasing number continuous operating stations globally, remote sensing indices have been advocated for reconstruction recently. Nevertheless, feasibility gravimetrically derived terrestrial storage (TWS) and its corresponding index not investigated. This paper aims construct a correlative relationship between observed basin-averaged Gravity Recovery Climate Experiment (GRACE) TWS Drought Severity Index...
Water level (WL) measurements denote surface conditions that are useful for monitoring hydrological extremes, such as droughts and floods, which both affect agricultural productivity regional development. Due to spatially sparse in situ stations, remote sensing capture localized instantaneous responses have recently been demonstrated be a viable alternative WL monitoring. Despite relatively good correlation with WL, traditional passive derived is reconstructed from nearby remotely sensed do...
Global navigation satellite systems (GNSS) techniques, such as GPS, can be used to accurately record vertical crustal movements induced by seasonal terrestrial water storage (TWS) variations. Conversely, the TWS data could inverted from GPS-observed displacement based on well-known elastic loading theory through Tikhonov regularization (TR) or Helmert variance component estimation (HVCE). To complement a potential non-uniform spatial distribution of GPS sites and improve quality inversion...
River water discharge (WD) is an essential component when monitoring a regional hydrological cycle. It expressed in terms of surface runoff (R) unit river basin area considered. To compensate for the decreasing number stations, remotely-sensed WD estimation has been widely promoted over past two decades, due to its global coverage. Previously, was reconstructed either by correlating nearby responses (e.g., indices and hydraulic variables) with ground-based observations or applying balance...
The importance of studying the sea-level change (SLC) in Hong Kong (HK) is emphasized by factors related to high population density, intensive urban, and industrial development, particularly along coast that involves a considerable landreclamation. To address this issue, we investigate spatiotemporal characteristics SLC HK territories analyzing tide-gauge (TG) records collected from 1954 2019 satellite-altimetry (SA) data 1993 2019. application ocean-tide inverted barometer corrections TG...
Both the Chang’E-1 and SELenological ENgineering Explorer (SELENE) lunar missions, launched in 2007, provide an opportunity for significant advances science. In particular, both orbiters refined topography models with unprecedented finer resolution improved accuracy, especially far side polar areas of Moon where fewer valid measurements have been available to date. An evaluation derived is essential interpretation selenophysics, including a knowledge interior Moon. This study provides...
On 28 August 2009, the northern margin of Qaidam basin in Tibet Plateau was ruptured by an Mw 6.3 earthquake. This study utilizes Envisat ASAR images from descending Track 319 and ascending 455 for capturing coseismic deformation resulting this event, indicating that earthquake fault rupture does not reach to earth's surface. We then propose a four-segmented model investigate determining parameters, followed inverting slip distribution. The preferred shows depths all four planes mainly range...
The Greenland Ice Sheet (GrIS) is losing mass at a rate that represents major contribution to global sea-level rise in recent decades. In this study, we use the Gravity Recovery and Climate Experiment (GRACE) data retrieve time series variations of GrIS from April 2002 June 2017. We also estimate balance RACMO2.3 ice discharge order obtain comparative analysis cross-validation. A detailed long-term trend seasonal inter-annual changes implemented by GRACE surface (SMB) modeling. results...