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  6. Assessing Groundwater Drought Hazard in the Case of Groundwater Storage Trends caused by Human Water Use as well as Climate Variability and Change - Data set
 
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Title(s)
TitleLanguage
Assessing Groundwater Drought Hazard in the Case of Groundwater Storage Trends caused by Human Water Use as well as Climate Variability and Change - Data set
en
 
Author(s)
NameORCIDGNDAffiliation
Herbert, Claudia orcid-logo
0000-0002-4795-5328
Physical Geography 
Döll, Petra orcid-logo
0000-0003-2238-4546
132350114
Physical Geography 
 
Faculty
11 Geosciences and Geography
 
Date Issued
14 August 2024
 
Publisher(s)
Goethe-Universität Frankfurt
 
Handle
https://gude.uni-frankfurt.de/handle/gude/392
 
DOI
10.25716/gude.1t1f-0e1t
 

Type(s) of data
Dataset
 
Language(s)
en
 
Subject Keyword(s)
  • groundwater drought h...

  • groundwater depletion...

  • groundwater storage t...

  • global hydrological m...

  • hydrology

 
Abstract(s)
AbstractLanguage
Over the last decades, increasing groundwater abstractions, and to a lesser extent climate variability and change, have led to groundwater depletion (GWD), especially in major irrigation areas. Such negative trends in groundwater storage (GWS) are problematic in the context of groundwater drought detection since they can superimpose climate-induced drought signals including climate-induced groundwater pumping. As this is currently not considered in large-scale drought early warning systems (LDEWSs), we used time series of monthly GWS from the global hydrological model WaterGAP 2.2e to investigate how groundwater drought can best be quantified in an LDEWS covering GWD regions. Groundwater drought hazard indicators (GDHIs) based on three variants of GWS were analyzed: (1) GWS as impacted by human water use (GWS_ant), (2) naturalized GWS assuming no human water use (GWS_nat), and (3) GWS_ltc, in which the linear trend of GWS_ant is removed.
Here, the reader can download 1) monthly time series of GWS_nat during 1980-2019, 2) GDHIs assessed in the study, 3) the R scripts for computing the indicators and other data (including required input data), and 4) WaterGAP-related data (e.g., landmask, big cities), and other meta data (e.g., GWD grid cells and LTC grid cells). WaterGAP 2.2e model output from an anthropogenic model run is available at https://doi.org/10.25716/GUDE.0TNY-KJPG.
en
 
Description(s)
DescriptionLanguage
General remarks:
"-99" or "-999" in the data refer to NA (not applicable, not computable).

1) GWS_nat 1980-2019: Monthly time series of GWS_nat from a naturalized WG22e model run.

2) Groundwater drought hazard indicators (GDHIs) as computed by WaterGAP 2.2e (climate data GSWP3-W5E5) for the whole globe except Antarctica, spatial resolution: 0.5°, monthly data for the reference period 1980-2009 and the evaluation period 2010-2019:

- EP1_ant, EP1_nat, EP1_ltc, EP12_prec (unitless; values need to be multiplied by 100 to be transformed into percent)
- D1_ant,D1_nat (in months)
- RP1_ant, RP1_nat (in years)

3) Nine R scripts:
- Eight out of the nine scripts are numbered and should be used subsequently as indicated.

4) GWS text files as input for R scripts to compute the EP1 variants:
- GWS data (G_GROUND_WATER_STORAGE_mm_gswp3w5e5_[...].txt) compiled from WG22e output (ant and nat variants) as well as GWS_ltc computed based on GWS_ant for 1980-2009 and 1980-2019.

5) Other data:
- watergap_arcid_lon_lat_continentalarea.txt:
WaterGAP grid cell IDs ("arcid") with longitude, latitude, and continental area per grid cells in km².

- big_cities_watergap_arcid_lon_lat.txt:
Grid cells with big cities were excluded from the assessment.

- gwd_and_ltc_cells_watergap_arcid_lon_lat.txt:
Groundwater depletion (GWD) grid cells and grid cells selected for linear trend correction (LTC).

- linear_GWS_ant_trend_Theil_Sen_1980_2009_and_2010_2019_in_mm_per_year_arcid_lon_lat.txt:
Computed linear GWS_ant trend (slope) using STL and the Theil Sen estimator.

- mean_annual_actual_NAg_and_GWR_mm_yr_1980_2009_arcid_lon_lat.txt:
Mean annual net abstractions from groundwater (NAg) in mm/yr during 1980-2009.
Mean annual groundwater recharge (GWR) in mm/yr during 1980-2009.

- number_of_drought_events_1980_2009_ant_nat_ltc_arcid_lon_lat.txt:
The number of drought events is required for the computation of the severity indicators (RP1 variants).

- variance_fraction_of_linear_trend_monthly_GWS_ant_mm_1980_2009_arcid_lon_lat.txt:
Variance ratio VR_lin [-] computed as the variance of GWS_lin divided by the variance of GWS_trend during the reference period 1980-2009.
The values are unitless and need to be multiplied by 100 to be transformed into percent.
en
 

Funder(s)
NameType of identifierFunder identifierAward numberAward titleAward URI
Bundesministerium für Bildung und Forschung
Other
5309538-8
02WGR1457B
GRoW - GlobeDrought
https://grow-globedrought.net/
 

License
Creative Commons Attribution 4.0 International (CC BY 4.0) cclicense-logocclicense-logo
 

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May 9, 2025
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