Your search found 2 records
1 Chun, K. P.; He, Q.; Fok, H. S.; Ghosh, S.; Yetemen, O.; Chen, Q.; Mijic, A. 2020. Gravimetry-based water storage shifting over the China-India border area controlled by regional climate variability. Science of The Total Environment, 714:136360. [doi: https://doi.org/10.1016/j.scitotenv.2019.136360]
Water storage ; Climate change ; Precipitation ; Drought ; Temperature ; Monsoon climate ; Water depletion ; Satellite observation ; Gravimetry / China / India / Indus River / Ganges River / Brahmaputra River
(Location: IWMI HQ Call no: e-copy only Record No: H049784)
(1.73 MB)
The regional water storage shifting causes nonstationary spatial distribution of droughts and flooding, leading to water management challenges, environmental degradation and economic losses. The regional water storage shifting is becoming evident due to the increasing climate variability. However, the previous studies for climate drivers behind the water storage shifting are not rigorously quantified. In this study, the terrestrial water storage (TWS) spatial shifting pattern during 2002–2017 over the China-India border area (CIBA) is developed using the Gravity Recovery and Climate Experiment (GRACE), suggesting that the Indus-Ganges-Brahmaputra basin (IGBB) was wetting while the central Qinghai-Tibet Plateau (QTP) was drying. Similar drying and wetting patterns were also found in the precipitation, snow depth, Palmer Drought Severity Index (PDSI) and potential evaporation data. Based on our newly proposed Indian monsoon (IM) and western North Pacific monsoon (WNPM) variation indices, the water shifting pattern over the CIBA was found to be affected by the weakening of the variation of IM and WNPM through modulating the regional atmospheric circulation. The weakening of IM and WNPM variations has shown to be attributed to the decreasing temperature gradient between the CIBA and the Indian Ocean, and possibly related to increasing regional temperatures associated with the increasing global temperature. As the global warming intensifies, it is expected that the regional TWS shifting pattern over the CIBA will be further exaggerated, stressing the need of advancing water resources management for local communities in the region.
2 Nandintsetseg, B.; Chang, J.; Sen, O. L.; Reyer, C. P. O.; Kong, K.; Yetemen, O.; Ciais, P.; Davaadalai, J. 2024. Future drought risk and adaptation of pastoralism in Eurasian rangelands. npj Climate and Atmospheric Science, 7:82. [doi: https://doi.org/10.1038/s41612-024-00624-2]
Drought ; Risk analysis ; Risk management ; Rangelands ; Grazing lands ; Socioeconomic aspects ; Climate change ; Ecosystems ; Models ; Vulnerability ; Precipitation ; Vegetation ; Livelihoods ; Soil moisture ; Satellite observation / Western Asia / East Asia / Central Asia
(Location: IWMI HQ Call no: e-copy only Record No: H052752)
(3.67 MB) (3.67 MB)
Drought risk threatens pastoralism in rangelands, which are already under strain from climatic and socioeconomic changes. We examine the future drought risk (2031–2060 and 2071–2100) to rangeland productivity across Eurasia (West, Central, and East Asia) using a well-tested process-based ecosystem model and projections of five climate models under three shared socioeconomic pathway (SSP) scenarios of low (SSP1-2.6), medium (SSP3-7.0), and high (SSP5-8.5) warming relative to 1985–2014. We employ a probabilistic approach, with risk defined as the expected productivity loss induced by the probability of hazardous droughts (determined by a precipitation-based index) and vulnerability (the response of rangeland productivity to hazardous droughts). Drought risk and vulnerability are projected to increase in magnitude and area across Eurasian rangelands, with greater increases in 2071–2100 under the medium and high warming scenarios than in 2031–2060. Increasing risk in West Asia is caused by longer and more intense droughts and vulnerability, whereas higher risk in Central and East Asia is mainly associated with increased vulnerability, indicating overall risk is higher where vulnerability increases. These findings suggest that future droughts may exacerbate livestock feed shortages and negatively impact pastoralism. The results have practical implications for rangeland management that should be adapted to the ecological and socioeconomic contexts of the different countries in the region. Existing traditional ecological knowledge can be promoted to adapt to drought risk and embedded in a wider set of adaptation measures involving management improvements, social transformations, capacity building, and policy reforms addressing multiple stakeholders.
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