Mon Oct 13, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Panda, Dileep Kumar, Ambast, Sunil Kumar, and Shamsudduha, Mohammad, 2021. Groundwater depletion in northern India: Impacts of the sub-regional anthropogenic land-use, socio-politics and changing climate. Hydrological Processes, 35(2):e14003, doi:10.1002/hyp.14003.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2021HyPr...35E4003P,
author = {{Panda}, Dileep Kumar and {Ambast}, Sunil Kumar and {Shamsudduha}, Mohammad},
title = "{Groundwater depletion in northern India: Impacts of the sub-regional anthropogenic land-use, socio-politics and changing climate}",
journal = {Hydrological Processes},
year = 2021,
month = feb,
volume = {35},
number = {2},
eid = {e14003},
pages = {e14003},
abstract = "{Understanding the key drivers behind intensive use of groundwater
resources and subsequent depletion in northern India is
important for future food security of India. Although spatio-
temporal changes of groundwater storage (GWS) and its depletion
in northern India are mapped using the NASA's GRACE (Gravity
Recovery and Climate Experiment) records, the sub-regional
diverse socio-political and environmental factors contributing
to the variability in groundwater withdrawals and renewals are
not well documented. Here, we provide new evidence on changes in
GWS at different spatial scales using both observations and
satellite-based measurements applying both parametric and non-
parametric statistical analyses. The substantial loss of GWS has
occurred since the beginning of the 21st century, and the
decline in GWS is associated with some record-breaking dry and
hot climate events. We present how certain state-based policy
decisions, such as supplying free electricity for irrigation,
prompted farmers to extract groundwater unsustainably and thus
led to widespread GWS deletion, which has been also accelerated
by frequent dryness and rising temperatures. In the hotspot of
Punjab, Haryana and Delhi of northern India, the extracted
groundwater during 1985-2013 is equivalent to a metre-high layer
if spread uniformly across its geographical domain. We find that
the groundwater storage loss in northern India has increased
rapidly from 17 km3 to 189 km3 between the pre-2002 and
2002-2013 periods. This loss in northern India is, therefore, an
excellent example of rapid surface greening and sub-surface
drying{\textemdash}a result of an interplay of socio-political
and environmental factors. As groundwater continues to be
treated as a common natural resource and no clear definition
exists to guide policymaking, this study also illustrates how
the administrative district level approach can solve the
widespread problem of depletion.}",
doi = {10.1002/hyp.14003},
adsurl = {https://ui.adsabs.harvard.edu/abs/2021HyPr...35E4003P},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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Mon Oct 13, F. Flechtner