Characterizing hydrological droughts within three watersheds in Yunnan, China from GNSS-inferred terrestrial water storage changes constrained by GRACE data

Geophysical Journal International, Год журнала: 2023, Номер 235(2), С. 1581 - 1599

Опубликована: Июль 27, 2023

SUMMARY The spatiotemporal evolution of drought is often modulated by climate and watershed characteristics. While numerous studies using space geodesy have been conducted in Yunnan, the scarcity limited sensitivity observation instruments hindered development watershed-scale analyses. This study aims to accurately characterize hydrological droughts within three watersheds Yunnan from 2011 January 2021 May a Global Navigation Satellite System (GNSS) inversion constrained Gravity Recovery Climate Experiment (GRACE) data. Initially, we employed Variational Bayesian Independent Component Analysis reconstruct 3-D crustal deformations at 43 GNSS stations resulting loadings. We then computed time-series vertical displacements caused GRACE Mascon water products. Subsequently, utilizing method least squares, derived scaling factors between (VCD) obtained observations synthetic By combing scaling-factor-adjusted VCDs with data, accurate estimates storage for watersheds. Finally, identified events characterized abnormal decreases used climatological methods quantitatively describe severity, extent recovery these extremes. Additionally, evaluated influence various earth elastic structures on factors, demonstrated their advantageous contribution aligning observations. In conclusion, our introduces novel approach integrate retrievals, allowing characterization data-scarce regions, which cannot be achieved or individually. Moreover, results underscore potential benefits monitoring analysis effective resource management.

Язык: Английский

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A novel GNSS and precipitation-based integrated drought characterization framework incorporating both meteorological and hydrological indicators

Remote Sensing of Environment, Год журнала: 2024, Номер 311, С. 114261 - 114261

Опубликована: Июнь 12, 2024

Язык: Английский

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MPG-NET: A low-cost, multi-purpose GNSS co-location station network for environmental monitoring

Measurement, Год журнала: 2023, Номер 216, С. 112981 - 112981

Опубликована: Май 6, 2023

Global Navigation Satellite Systems (GNSS) are very versatile sensors, which can be used for a variety of commercial and scientific applications. This holds especially true different fields remote sensing, such as atmospheric sounding or soil moisture monitoring. With the advent low-cost dual-frequency GNSS equipment, certain applications no longer restricted to use geodetic-grade instrumentation fully take leverage measurements in second frequency band. In view these emerging benefits, this study introduces development deployment multi-purpose station network Swiss Alps, called MPG-NET. We discuss technical details setup, terms hardware design, well quality derived sensing products. particular, our analyses focus on time series zenith total delays (ZTD) volumetric content. Products validated against benchmark data obtained from numerical weather models in-situ sensors. For prototype station, results show good agreement with baseline, errors few millimeters ZTD, remarkably high correlation Beside documented value displacement monitoring (such landslides strong earthquakes), findings another step towards establishment dense high-precision, that comes at affordable price.

Язык: Английский

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GNSS Geodesy Quantifies Water‐Storage Gains and Drought Improvements in California Spurred by Atmospheric Rivers

Geophysical Research Letters, Год журнала: 2024, Номер 51(13)

Опубликована: Июль 2, 2024

Abstract Atmospheric rivers (ARs) deliver significant and essential precipitation to the western United States (US) with consequential interannual variability. The intensity frequency of ARs strongly influence reservoir levels, mountain snowpack, groundwater recharge, which are key drivers water‐resource availability natural hazards. Between October 2022 April 2023, states experienced exceptionally heavy from several families powerful ARs. Using observations surface‐loading deformation Global Navigation Satellite Systems, we find that terrestrial water‐storage gains exceeded 100% normal within vital California watersheds. Independent solutions derived different data‐analysis inversion methods provide an important measure precision. sustained storage increases, show closely associated at daily‐to‐weekly timescales, alleviated both meteorological hydrological drought conditions in region, a lag hydrological‐drought improvements. Quantifying recovery extreme after advances understanding increasingly variable hydrologic cycle.

Язык: Английский

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Investigating terrestrial water storage variation and its response to climate in southeastern Tibetan Plateau inferred through space geodetic observations

Journal of Hydrology, Год журнала: 2024, Номер 640, С. 131742 - 131742

Опубликована: Июль 29, 2024

Язык: Английский

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Using Integrated Geodetic Data for Enhanced Monitoring of Drought Characteristics Across Four Provinces and Municipalities in Southwest China

Remote Sensing, Год журнала: 2025, Номер 17(3), С. 397 - 397

Опубликована: Янв. 24, 2025

This paper presents an analysis of regional terrestrial water storage (TWS) changes and drought characteristics in Southwest China, encompassing Sichuan Province, Chongqing Municipality, Yunnan Guizhou Province. Existing geodetic datasets, such as those from the Gravity Recovery Climate Experiment (GRACE) its successor satellites (GRACE Follow-On), well Global Navigation Satellite System (GNSS) data, face significant challenges related to limited spatial resolution insufficient station distribution. To address these issues, we propose a novel inversion method that integrates GNSS GRACE/GFO data by establishing virtual stations for determining weight values between using Akaike Bayesian Information Criterion (ABIC). allows estimating TWS December 2010 June 2023 monitoring conditions conjunction with hydrometeorological (precipitation, evapotranspiration, runoff). The results show strong correlations joint (0.98) (0.69). Joint Drought Severity Index (Joint-DSI) indicates five major events, most severe occurring July 2022 2023, average deficit 86.133 km³. Extreme primarily impacts Yunnan, driven abnormal precipitation deficits. methodology presented this study provides practical approach assessing China. leverages complementary strengths offers new insights into resource management detection.

Язык: Английский

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A Study on Crustal Deformation Patterns induced by Large-Scale River Storage Variation using a Line-Load Model

Journal of the Korean earth science society, Год журнала: 2025, Номер 46(1), С. 64 - 77

Опубликована: Фев. 28, 2025

Язык: Английский

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Characterization of hydrological droughts in Brazil using a novel multiscale index from GNSS

Journal of Hydrology, Год журнала: 2022, Номер 617, С. 128934 - 128934

Опубликована: Дек. 15, 2022

Язык: Английский

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Drought‐Induced Vertical Displacements and Water Loss in the Po River Basin (Northern Italy) From GNSS Measurements

Earth and Space Science, Год журнала: 2024, Номер 11(3)

Опубликована: Март 1, 2024

Abstract We study vertical ground displacement time series from Global Navigation Satellite System (GNSS) stations to measure deformation associated with hydrological drought in the Po river basin. Focusing on interannual trend changes, rather than seasonal (annual) components, we found a clear spatially correlated signal that is temporally (anti)correlated changes level and SPEI‐12 index, moving upward during periods of river/index decrease vice versa. In 2021–2022 span, which culminated most severe last two centuries, estimate amount spatial distribution water loss basin its surroundings. Excluding signals, between January 2021 August 2022, GNSS underwent uplift, up 7 mm, corresponds ∼70 Gtons loss. Compared Land Data Assimilation Gravity Recovery Climate Experiment estimates, results show similar temporal evolution content but more heterogeneous values. continuous networks provide an effective way monitor multiannual storage even small basins serve as reliable indicator severity.

Язык: Английский

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Geophysics as a hypothesis‐testing tool for critical zone hydrogeology

Wiley Interdisciplinary Reviews Water, Год журнала: 2024, Номер 11(5)

Опубликована: Май 6, 2024

Abstract Geophysical methods have long been used in earth and environmental science for the characterization of subsurface properties. While imaging opens “black box” heterogeneity, we argue here that these tools can be a more powerful way than characterization, which is to develop test hypotheses. Critical zone has opened new questions hypotheses hydrologic sciences holistically around controls on water fluxes between surface, biological, underground compartments. groundwater flows monitored boreholes, from atmosphere aquifer through soil root system are complex study boreholes inform upon. Here, focus successful application various geophysical explore critical hydrogeology highlight areas where future contributions could made. Specifically, look at structural flow, dimensionality partitioning those subsurface, plant uptake, how geophysics may constrain reactive transport. We also outline research push boundaries quantify complexity. This article categorized under: Water Life > Nature Freshwater Ecosystems Science Hydrological Processes Methods

Язык: Английский

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