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The National Weather Service office of the NOAA defines drought as "a deficiency of moisture that results in adverse impacts on people, animals, or vegetation over a sizeable area". [17] Drought is a complex phenomenon − relating to the absence of water − which is difficult to monitor and define. [18]
Increased drought frequency and severity is also expected to be one of the effects of global warming. Drought having an acute economic impact in the history of the United States occurred during the 1930s and 1940s, periods of time known as 'Dust Bowl' years where relief and health agencies became overburdened and many local community banks had ...
Effects of climate change could have different impacts on groundwater storage: The expected more intense (but fewer) major rainfall events could lead to increased groundwater recharge in many environments. [64]: 104 But more intense drought periods could result in soil drying-out and compaction which would reduce infiltration to groundwater. [67]
As the world warms from human-caused climate change, fresh water for drinking, cooking and cleaning is becoming harder to get for many people. The United Nations estimates that around 2.2 billion ...
Since 2000, climate change has been the primary cause of both the expansion of the drought area and the increase in drought severity, with that percentage rising to over 90% during the drought period.
Some climate change effects: wildfire caused by heat and dryness, bleached coral caused by ocean acidification and heating, environmental migration caused by desertification, and coastal flooding caused by storms and sea level rise. Effects of climate change are well documented and growing for Earth's natural environment and human societies. Changes to the climate system include an overall ...
If drought-like conditions become permanent with climate change, as some long-range climate models suggest, the Amazon biome could lose one-sixth to one-half of its area, or 1 million to 3 million ...
Often these people will have made a disproportionately low contribution toward man-made global warming, thus leading to concerns over climate justice. [136] [137] [131] Climate change has diverse effects on migration activities, and can lead to decreases or increases in the number of people who migrate.