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All Articles Tagged As: drought
 | As parts of Central America and the US Southwest endure some of the worst droughts to hit those areas in decades, scientists have unearthed new evidence about ancient dry spells that suggest the future could bring even more serious water shortages. Three researchers speaking at the annual meeting of the American Geophysical Union in San Francisco on Dec. 5, 2011, presented new findings about the past and future of drought. ...> Full Article |
 | A new study at the University of Arizona's Laboratory of Tree-Ring Research has revealed a previously unknown multi-decade drought period in the second century A.D. The findings give evidence that extended periods of aridity have occurred at intervals throughout our past. ...> Full Article |
Haboobs, giant dust storms, walloped Arizona last summer -- some close to two kilometers high and 160 kilometers wide -- knocking out electricity, creating traffic jams and grounding airplanes. Texas, California, Colorado, New Mexico, Oklahoma and other states are also experiencing drought conditions. Is this the start of a trend? As EARTH reports in the November issue: over the next couple of decades, researchers say, the American West will transition to an environment that may make the 1930s Dust Bowl seem mild and brief.
...> Full Article
 | A group of researchers have studied the history of drought in the Pacific Northwest during the last 6,000 years, a time that spans the mid-Holocene geological epoch to the present. The goal of the research was to improve the understanding of drought history because the instrumental record of drought only goes back a few hundred years and at relatively few locations. ...> Full Article |
 | Pitt-led researchers extracted a 6,000-year climate record from a Washington state lake showing that the American Pacific Northwest could not only be in for longer dry seasons, but also is unlikely to see a period as wet as the 20th century any time soon and will likely suffer severe water shortages. ...> Full Article |
New research shows that the 2010 Amazon drought may have been even more devastating to the region's rainforests than the unusual 2005 drought, which was previously billed as a one-in-100 year event.
...> Full Article
 | The United States and many other heavily populated countries face a growing threat of severe and prolonged drought. The analysis concludes that warming temperatures associated with climate change will likely create increasingly dry conditions across much of the globe in the next 30 years, possibly reaching a scale in some regions by the end of the century that has rarely, if ever, been observed in modern times. ...> Full Article |
 | A new study from the University of Miami has found a connection between La Nina-like sea surface temperatures in the central Pacific and droughts in western Europe and in what later became the southwestern United States and Mexico, as published in a recent issue of Geophysical Research Letters. ...> Full Article |
 | Droughts in the late 20th century rival some of North Africa's major droughts of centuries past, reveals new research that peers back in time to the year 1179. The first multicentury drought reconstruction that includes Morocco, Algeria and Tunisia shows frequent and severe droughts during the 13th and 16th centuries and the latter part of the 20th century. An international team led by a University of Arizona researcher developed the tree-ring-based drought history. ...> Full Article |
California experienced centuries-long droughts in the past 20,000 years that coincided with the thawing of ice caps in the Arctic, according to analysis of stalagmites from a cave in the Sierra Nevada.
...> Full Article
 | New analysis shows that the water scarcity being experienced in southeast Australia started up to 15 years ago. ...> Full Article |
 | Two abrupt and drastic climate events, 700 years apart and more than 45 centuries ago, are teasing scientists who are now trying to use ancient records to predict future world climate. The events -- one, a massive, long-lived drought believed to have dried large portions of Africa and Asia, and the other, a rapid cooling that accelerated the growth of tropical glaciers -- left signals in ice cores and other geologic records from around the world. ...> Full Article |
Rivers in some of the world's most populous regions are losing water, according to a comprehensive study of global stream flows.
...> Full Article
 | Devastating droughts worse than the infamous Sahel drought are part of the normal climate regime for sub-Saharan West Africa, according to new research. Scientists have developed the first almost year-by-year record of the last 3,000 years of West Africa's climate. In that period, catastrophic droughts occurred every 30 to 65 years, and the pattern can be expected to continue in the future, the team reports in the April 17 issue of the journal Science. ...> Full Article |
New study investigates effects of extreme hydrological events on vegetation
...> Full Article
 | Recent modeling results show that the depth of the water table, which results from lateral water flow at the surface and subsurface, determines the relative susceptibility of regions to changes in temperature and precipitation. ...> Full Article |
 | Science team designing a NASA satellite mission to collect global soil moisture measurements and other data seen as key to improving weather, flood and drought forecasts and predictions of agricultural productivity and climate change. ...> Full Article |
 | Analysis of current and scheduled use and human-induced
climate change sparks urgent warning from researchers at
Scripps Institution of Oceanography, UC San Diego ...> Full Article |
 | Researchers in a new Science article published online warn that human-caused climate change has dramatically altered the water flow over the past 50 years in several Western states. ...> Full Article |
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