scholarly journals Monitoring groundwater storage changes in complex basement aquifers: An evaluation of the GRACE satellites over East Africa

2016 ◽  
Vol 52 (12) ◽  
pp. 9542-9564 ◽  
Author(s):  
J. Nanteza ◽  
C. R. de Linage ◽  
B. F. Thomas ◽  
J. S. Famiglietti
Keyword(s):  
East Africa ◽  
Groundwater Storage ◽  
Basement Aquifers ◽  
Grace Satellites

scholarly journals Comparison of Groundwater Storage Changes From GRACE Satellites With Monitoring and Modeling of Major U.S. Aquifers

2020 ◽  
Vol 56 (12) ◽  
Author(s):  
Ashraf Rateb ◽  
Bridget R. Scanlon ◽  
Donald R. Pool ◽  
Alexander Sun ◽  
Zizhan Zhang ◽  
...  
Keyword(s):  
Groundwater Storage ◽  
Grace Satellites

A Strong Linkage between Seasonal Crop Growth and Groundwater Storage Variability in India

2021 ◽  
Vol 22 (1) ◽  
pp. 125-138
Author(s):  
Akarsh Asoka ◽  
Vimal Mishra
Keyword(s):  
Time Scales ◽  
Central India ◽  
Crop Growth ◽  
North India ◽  
Groundwater Depletion ◽  
Groundwater Storage ◽  
Causality Test ◽  
Growing Seasons ◽  
Deep Aquifers ◽  
Grace Satellites

AbstractGroundwater 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.

Assessment of aquifers groundwater storage for the mitigation of climate change effects

2016 ◽  
Vol 39 ◽  
pp. 89-92 ◽  
Author(s):  
Luca Alberti ◽  
Martino Cantone ◽  
Loris Colombo ◽  
Gabriele Oberto ◽  
Ivana La Licata
Keyword(s):  
Climate Change ◽  
Groundwater Storage ◽  
Climate Change Effects

Drawers of Water II: assessing change in domestic water use in East Africa

Waterlines ◽  
2003 ◽  
Vol 22 (1) ◽  
pp. 22-25 ◽  
Author(s):  
John Thompson ◽  
Ina Porras ◽  
Munguti Katui-Katua ◽  
Mark Mujwahuzi ◽  
James Tumwine
Keyword(s):  
East Africa ◽  
Water Use ◽  
Domestic Water

Coffee and qat on the Royal Danish expedition to Arabia – botanical, ethnobotanical and commercial observations made in Yemen 1762–1763

2015 ◽  
Vol 42 (1) ◽  
pp. 101-112
Author(s):  
I. Friis
Keyword(s):  
East Africa ◽  
Arabian Peninsula ◽  
Made In

In spite of widespread consumption of coffee in Europe at the time of the Royal Danish expedition to Arabia 1761–1767, little was known of the cultivation of coffee in Yemen and of the Arabian coffee export to Europe. Fresh leaves of qat were used as a stimulant on the Arabian Peninsula and in East Africa, but before the Royal Danish expedition to Arabia this plant was known in Europe only from secondary reports. Two members of the expedition, Carsten Niebuhr and Peter Forsskål, pioneered studies of coffee and qat in Yemen and of the Arabian coffee export. Linnaeus' instructions for travellers requested observations on the use of coffee, but otherwise Forsskål and Niebuhr's studies of coffee and qat were made entirely on their own initiative. Now, 250 years after The Royal Danish expedition to Arabia, coffee has become one of the world's most valuable trade commodities and qat has become a widely used and banned drug.

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