1,720,970 research outputs found
Total water storage extremes index from GRACE and GRACE-FO missions
No full textTotal water storage extremes index from GRACE and GRACE-FO missions
• TWS: total water storage is the sum of (Soil moisture+ surface water+snow water equivalent+glaciers+groundwater)
• Data based on GRACE and GRACE-FO missions estimates of TWS
GRACE/GRACE-FO - Gravity Recovery and Climate Experiment (utexas.edu)
Contents of Netcdf
• “lon”: longitudes
• “lat”: latitudes
• “time” Days since 2002_01_01
• “TWS_Extremes_unit_mm” is the extreme change in the total storage relative to the normal climatology between 2002/04 and 2021/08. with unit mm
• “TWS_Extremes_index” Index of the extremes (unitless);
Positive values: above normal storage changes (Floods)
Negative values: below normal storage changes (Droughts)
• Data range: 04/2002 – 08/202
Reconstruction of GRACE Mass Change Time Series Using a Bayesian Framework
No full textReconstruction of GRACE Mass Change Time Series Using a Bayesian Framework
Unit: cm
Dates: months since 04/2002
Date span: 04/2002 - 08/202
Data file for "Comparison of Groundwater Storage Changes from GRACE Satellites with Monitoring and Modeling of Major U.S. Aquifers"
No full textSupplementary materials for the paper "Comparison of Groundwater Storage Changes from GRACE Satellites with Monitoring and Modeling of Major U.S. Aquifers" by (Rateb et al 2020
Replication Data for: Relative Sea-Level Rise Along the U.S. Gulf Coast: Annual Budget, Dynamics, and Variability
No full textThe Gulf Coast, with major ports and industries, faces challenges from rising sea levels, hurricanes, and land subsidence. We used advanced statistical methods to analyze factors like ocean warming, Loop Current circulation, ice-sheet melt, and local land motion driving sea-level changes from 2003 to 2021. Unlike linear approaches, our method captures abrupt accelerations and slowdowns, reflecting short-term variability in each driver’s contribution. Water levels near Florida and the central Gulf are rising faster than in west Texas due to stronger ocean warming and circulation changes. Land subsidence is a critical issue in parts of Louisiana and Texas. Annually examining these drivers shows their combined effect often deviates from a simple sum, sometimes amplifying or canceling each other. Coastal altimetry data reveal nearshore sea-level rises around twice as large as open-ocean measurements, crucial for local agencies and planners preparing for hazards like storm-surge flooding and coastal erosion. Our findings highlight the value of precise coastal observations and time-varying statistical models to guide resilience efforts in the Gulf Coast region
Replication Data for "Dynamics and Couplings of Terrestrial Water Storage Extremes from GRACE and GRACE-FO Missions During 2002–2024"
No full textHydroclimatic extremes such as droughts and floods severely impact global livelihoods, economies, and ecosystems, yet their detection remains challenging. This study evaluates global Terrestrial Water Storage (TWS) extremeness and climate linkages using GRACE and GRACE-FO data from 2002 to 2024. By examining upper and lower deciles of TWS anomalies representing wet and dry extremes and assessing spatial dependencies, we identify key patterns, trends, and driving factors through dimensional reduction and probabilistic modeling. Results show global TWS extremes are governed by a 2–3-year oscillatory cycle linked to El Niño–Southern Oscillation, which synchronizes drought and pluvial conditions across continents. Drought extremes show broader spatial coherence than pluvial events, indicating moisture deficits propagate more uniformly through the land–atmosphere system. A weaker quasi-decadal cycle (6 to 10 years) modulates these responses and underlies a shift around 2011–2012: before 2011, wet extremes intensified, while after 2012, dry extremes became dominant, particularly in interior Asia, western United States, and southern Africa. Neither pluvial nor drought extremes show significant global trends in intensity; however, they remain phase-locked, with wet events twice as intense as dry ones, reflecting asymmetric hydrologic response to moisture surpluses versus deficits. We probabilistically reconstruct TWS extremeness during satellite data gaps using leading spatio-temporal patterns. The current record, spanning less than one multidecadal cycle, remains insufficient for robust attribution. Extending satellite gravimetry is essential to refine uncertainty in attributing global pluvial and drought extremes under climate change
"Replication Data for: Assessing Internal Climate Variability in Terrestrial Water Storage: GRACE/GRACE-FO Observations Against CESM2 and IPSL Large Ensembles"
No full textTB
Replication Data for: Freshwater Availability in the Mississippi River Basin and Adjacent Texas Aquifers under Human and Climate Pressures
No full textWater security in the Mississippi River Basin and Texas aquifer region (MRBTX) faces pressure from irrigation demands, climate extremes, and climate change. We integrate groundwater observations, GRACE and GRACEFO total water storage anomalies (TWSA), drought data, climate projections, and irrigation-use analyses to assess aquifer sustainability across MRBTX. A longitudinal gradient exists; arid, irrigation-dependent western provinces show chronic storage deficits, while humid northern and eastern provinces are stable or recovering; a midcontinent transition belt shows minimal change. Groundwater level declines since 1950 average −16.66 ± 0.54 m in the central and southern High Plains and −15.20 ± 3.15 m in the Carrizo–Wilcox. GRACE data shows 85 ± 15 km³ removed from the central and southern High Plains and Texas aquifer since 2002. Gains occur in cooler regions, including 152 ± 57 in Great Lakes and northern Great Plains. The lower Mississippi and Gulf coast show non-significant storage of 32 ± 30 km³. West of 98° W within MRB-TX, droughts occur 1.3–2.0 times per decade lasting 13–15 months, with 2000–2020 irrigation withdrawals averaging 52 km³ yr⁻¹, mostly from groundwater. Climate change is highly to strengthen the east–west gradient under SSP2 4.5, with basin wide annual increases of about 5 to 15 percent driven by robust winter and spring gains in the humid east and north, and little change to slight summer drying in the arid west where model agreement is low. Nine aquifers in northern and eastern MRB–TX are projected sustainable by 2050. The central and southern High Plains and Carrizo–Wilcox are projected to decline −20.02 m and −20.84 m by 2050 at −2.99 and −3.34 m decade⁻¹. Limitations include satellite footprint, well coverage, and diagnostic uncertainties. Solutions include targeted pumping reductions, improved irrigation systems, conjunctive water use, and crop shifts in critical areas. Many provinces can remain secure with these measures; without them, two major aquifers face severe depletion
Replication Data for: "Rapid Mapping of Global Flood Precursors and Impacts Using a Novel GRACE Five-Day Solution"
No full textReplication Data for the Paper "Rapid Mapping of Global Flood Precursors and Impacts Using a Novel GRACE Five-Day Solution" in Nature Communications:
This dataset is a crucial resource for verifying and replicating the research findings presented in the paper.
Replication Data Files:
1- "File DFO_GlobalFloods.csv: This is the data file containing information about global floods. The original data source can be accessed at https://floodobservatory.colorado.edu/.
The floods in this file are organized based on their durations."
2- "File PrCR_ReCR_Rate_11_2023_Figures3_5.csv: This file contains the results of an event coincidence analysis for both precursor coincidence rates and response coincidence rates, as depicted in Figures 3 and 5."
3- "File DJF_results_11_2023_Figure_6.csv: Describes the results of response coincidence rates for the Atmospheric Teleconnection-Water System (ATWS) following heavy winter rainfall."
4- "File JJA_results_11_2023_Figure_6.csv: Describes the results of response coincidence rates for the Total Water Storage (ATWS) following intense summer rainfall."
5- "File MAM_results_11_2023_Figure_6.csv: Describes the results of response coincidence rates for the Total Water Storage (ATWS) following intense spring rainfall."
6- "File SON_results_11_2023_Figure_6.csv: Describes the results of response coincidence rates for the Total Water Storage (ATWS) following intense fall rainfall."
7- "File RawData_5D_ATWS_GlobalFloods.csv: This file contains antecedent total water storage data that is necessary to generate the results shown in Figures 1, 3, and 5 for a total of 3,272 flood events."
The ATWS quantifies the fraction of wet storage relative to historical maxima for the period spanning from 2002 to 2021. This is accomplished by accumulating the data using a weighted sum of the last 6 epochs and the current epocsh. (Manuscript Methods)
8- "File RawData_5D_TWS_GlobalFloods.csv: The CSR-5D solution provides total water storage data for 3,372 flood events, averaged over a 3-degree around the flood locations." Unit in m
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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