Mon Oct 13, F. Flechtner
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Asoka, Akarsh and Mishra, Vimal, 2021. A Strong Linkage between Seasonal Crop Growth and Groundwater Storage Variability in India. Journal of Hydrometeorology, 22(1):125–138, doi:10.1175/JHM-D-20-0085.1.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2021JHyMe..22..125A,
author = {{Asoka}, Akarsh and {Mishra}, Vimal},
title = "{A Strong Linkage between Seasonal Crop Growth and Groundwater Storage Variability in India}",
journal = {Journal of Hydrometeorology},
year = 2021,
month = jan,
volume = {22},
number = {1},
pages = {125-138},
abstract = "{Groundwater is rapidly depleting in India primarily because of pumping
for irrigation. However, the crucial role of crop growth at
annual and seasonal time scales in groundwater storage
variability remains mostly unexplored. Using the data from the
Gravity Recovery Climate Experiment (GRACE) satellites and well
observations, we show that crop growth is negatively correlated
with groundwater storage at annual and seasonal time scales in
north India. Precipitation is positively associated with
groundwater storage variability at the yearly time scale in
north-central India (NCI) and south India (SI). In contrast,
precipitation is negatively correlated with groundwater storage
from the GRACE satellites in northwest India (NWI). The negative
correlation between precipitation and groundwater from the GRACE
in NWI is primarily due to groundwater depletion due to
anthropogenic pumping from deep aquifers. Precipitation and
groundwater storage from the well observations are positively
correlated in all the three regions, indicating the influence of
precipitation on shallow aquifers. Analysis of the two main crop
growing seasons (Rabi and Kharif) showed that crop growth is
negatively related to groundwater storage in both Kharif (June-
September) and Rabi seasons in north India (NWI and NCI).
Groundwater contributes more than precipitation in NCI during
the Kharif season and in NWI and SI during the Rabi season.
Granger's causality test showed that groundwater is a
significant contributor to crop growth in NWI and NCI in both
Kharif and Rabi seasons. Our results highlight the need for
agricultural water management in both the crop growing seasons
in north India for reducing the rapid groundwater depletion.}",
doi = {10.1175/JHM-D-20-0085.1},
adsurl = {https://ui.adsabs.harvard.edu/abs/2021JHyMe..22..125A},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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Mon Oct 13, F. Flechtner