• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.467-467
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• 2015

Sustainable water resource management requires the assessment of hydrological variability in response to climate fluctuations and anthropogenic activities. Determining quantitative estimates of water balance and total basin discharge are of utmost importance to understand the variations within a basin. Hard-to-reach areas with few infrastructures, coupled with lengthy administrative procedures makes in-situ data collection and water management processes very difficult and unreliable. In this study, the hydrological behavior of Lake Chad whose extent, extreme climatic and environmental conditions make it difficult to collect field observations was examined. During a 10 year period [January 2003 to December 2013], dataset from space-borne and global hydrological models observations were analyzed. Terrestial water storage (TWS) data retrieved from Gravity Recovery and Climate Experiment (GRACE), lake level variations from Satellite altimetry, water fluxes and soil moisture from Global Land Data Assimilation System (GLDAS) were used for this study. Furthermore, we combined altimetry lake volume with TWS over the lake drainage basin to estimate groundwater and soil moisture variations. This will be validated with groundwater estimates from WaterGAP Global Hydrology Model (WGHM) outputs. TWS showed similar variation patterns Lake water level as expected. The TWS in the basin area is governed by the lake's surface water. As expected, rainfall from GLDAS precedes GRACE TWS with a phase lag of about 1 month. Estimates of groundwater and soil moisture content volume changes derived by combining altimetric Lake Volume with TWS over the drainage basin are ongoing. Results obtained shall be compared with WaterGap Hydrology Model (WGHM) groundwater estimate outputs.

• Korea and Global Affairs
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• v.3 no.2
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• pp.155-182
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• 2019

This essay examines the relationship between counterterrorism within the Lake Chad Basin Commission hereinafter referred to as LCBC and its effects on leaders' tenure in office. The countries of the LCBC, an intergovernmental institution promoting regional integration in the sub-region, established the Multinational Joint Task Force (MNJTF) primarily to maintain peace and security. In April 2012 the mandate of this structure was reinvigorated and broadened to manage the ongoing menace perpetrated by the Islamist terrorist group, Boko Haram in the sub-region. The political consequences, however, has not been identical for leaders of the member states of the LCBC participating in this counterterrorism operation. This essay primarily relies on secondary data derived from available public data sets in explaining this phenomenon. The phenomenon of leaders in Nigeria, Cameroon, Niger and Chad between 2010 and 2018 is used to examine the relationship between counterterrorism in the Lake Chad Basin Commission and its effects on political survival. Results suggest that leaders of highly democratic countries are more likely to lose office and held accountable for either perceived inaction or failure in the counterterrorism operation than their counterparts in autocratic states.

• Journal of the Korean Professional Engineers Association
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• v.43 no.1
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• pp.26-31
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• 2010

The changes of climate and earth environment caused by Global Warming has seriously occurred recently. For instance, the water in the Chad Lake in Africa has continuously disappeared and Tuvalu in the South Pacific is facing a serious natural disaster with that the entire country is sinking under the sea. These natural disasters become a serious risk threatening the existence of the human-race. Therefore, we needs a fundamental measure to prevent Global Warming. That is a natural phenomenon that makes the earth warmer by 6 types a greenhouse gas including $CO_2So$ we look for an answer from the 'Green Growth' movement.