¶ … California --Causes and Impacts
What is drought and why does it occur
The phenomenon of drought is regarded as an inescapable, cyclic hazard, and its build-up is gradual. The quantity of stream flow and precipitation, or degree of deficiency in groundwater that may cause drought in any given area might not have the same consequences in another area. This is because it is dependent of the quantity and type of water required, as well as alternative water supplies found within a region in any given time period. While the development of drought has already had significant impacts in the 21st century, it might now also be turning increasingly frequent. Drought cases across the world have increased, caused possibly by technological advancements in food production and shelter techniques, and in basic service provision, leading to massive food production and human settlement concentrations that are almost reaching or surpassing natural resource sources' capacities (Woo 129). Prior to mitigation of its impacts, one has to identify its onset. Longer-term weather forecasts are yet to succeed, and have suffered obstructions by the recent increased weather variability. Thus, focus has moved to establishing drought indexes, since drought thresholds help identify its onset.
Causes of droughts in California
The phenomenon of drought is a common occurrence in the state of California, resulting in damages of up to several billion dollars in one single year of drought, and affecting different stakeholders across the state. Changes in climate are associated with the state's drought crisis, through the following mechanisms: i) increasing temperatures and ii) alterations to atmospheric patterns that contribute to diminishing rainfall. Global warming, towards which human emissions contribute significantly, is said to intensify California droughts by 15-20%. Since the year 2011, four continuous failed rainy seasons have contributed to acute moisture deficits in the state, depleting groundwater and decreasing agricultural productivity (Seager 7015). California's present drought situation has heavily burdened statewide water resources and agriculture, aggravated further by simultaneous extremely-high temperatures (Lingyin 111).
Impact of drought in California
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