GroMoPo Metadata for Qaidam Basin FEFLOW model

Authors:

GroMoPo Sacha Ruzzante

Owners:

gromopo_admin

Type:

Resource

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The size of this resource is 1.5 KB

Created:

Feb 08, 2023 at 4:57 a.m.

Last updated:

Feb 08, 2023 at 4:57 a.m.

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Abstract

Traditional numerical models usually use extensive observed hydraulic-head data as calibration targets. However, this calibration process is not applicable in remote areas with limited or no monitoring data. This study presents an approach to calibrate a large-scale groundwater flow model using the monthly Gravity Recovery and Climate Experiment (GRACE) satellite data, which have been available globally on a spatial grid of 1A degrees in the geographic coordinate system since 2002. A groundwater storage anomaly isolated from the terrestrial water storage (TWS) anomaly is converted into hydraulic head at the center of the grid, which is then used as observed data to calibrate a numerical model to estimate aquifer hydraulic conductivity. The aquifer system in the remote and hyperarid Qaidam Basin, China, is used as a case study to demonstrate the applicability of this approach. A groundwater model using FEFLOW is constructed for the Qaidam Basin and the GRACE-derived groundwater storage anomaly over the period 2003-2012 is included to calibrate the model, which is done using an automatic estimation method (PEST). The calibrated model is then run to output hydraulic heads at three sites where long-term hydraulic head data are available. The reasonably good fit between the calculated and observed hydraulic heads, together with the very similar groundwater storage anomalies from the numerical model and GRACE data, demonstrate that this approach is generally applicable in regions of groundwater data scarcity.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

China

North Latitude

39.5000°

East Longitude

99.0000°

South Latitude

35.0000°

West Longitude

90.0000°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.1007/s10040-015-1278-6
Depth	1900
Scale	Other
Layers	3
Purpose	Groundwater resources
GroMoPo_ID	221
IsVerified	True
Model Code	Feflow
Model Link	https://doi.org/10.1007/s10040-015-1278-6
Model Time	2003-2012
Model Year	2015
Model Authors	Hu, LT; Jiao, JJ
Model Country	China
Data Available	Report/paper only
Developer Email	litanghu@bnu.edu.cn; jjiao@hku.hk
Dominant Geology	Model focuses on multiple geologic materials
Developer Country	Peoples R China
Publication Title	Calibration of a large-scale groundwater flow model using GRACE data: a case study in the Qaidam Basin, China
Original Developer	No
Additional Information
Integration or Coupling	None of the above
Evaluation or Calibration	GRACE storage anomaly
Geologic Data Availability	No

How to Cite

GroMoPo, S. Ruzzante (2023). GroMoPo Metadata for Qaidam Basin FEFLOW model, HydroShare, http://www.hydroshare.org/resource/9339d1099c0e4331b1da1a9b1d6e19c8

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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