Articles tagged with Precipitation
Researchers reconstructed Yellow River's middle reach runoff from 1492 to 2013 CE, finding lowest natural runoff during drought 1926-1932 CE. Human activity since 1980s decreased precipitation, increased observed runoff variability.
Researchers simulate Holocene effective moisture change in East and Central Asia using a virtual lake system. The study reveals that changes in precipitation and evaporation patterns drove climate change in the region, with decreased effective moisture in the Tibetan Plateau primarily attributed to decreased summer solar radiation.
A new study found that the rainy season in Northern Central Asia will shift from May-July to March-May by the end of the 21st century. This change is attributed to increased precipitation, with a projected 14.41% rise under the highest emission scenario.
New research reveals how El Niño affects soil moisture content, controlling plant growth and food supply. The study identifies areas with severe decreases in soil moisture, such as the Amazon basin and maritime Southeast Asia, which may lead to large-scale plant die-offs.
A new theoretical model breaks down vertical atmospheric movement into dry and moist components, explaining regional patterns of extreme precipitation sensitivity. The model suggests that climate warming impacts vary by latitude, with the dry component dominating in mid-latitudes.
A study found that fall precipitation is linked to increased curly top disease in New Mexico crops, allowing farmers to predict and manage the disease. The research also shows that good weed control methods can reduce beet leafhopper numbers, leading to improved crop yields.
Tropical cyclones have a drying effect on the Maritime Continent, exacerbating dry seasons. Forecasting tropical cyclone activity can improve predictions for this region's circulation patterns.
Research led by University of Arizona found simultaneous droughts in Southern California's main water sources occurred six times per century on average. Perfect droughts lasting two or more years coincide with high pressure off the northwest Pacific Coast and storm tracks shifted north.
A study published in Science Bulletin finds that limiting global warming to 1.5°C would reduce precipitation extremes in China, particularly in southeastern regions. The research highlights the social impacts of climate change, with heavy rainfall events intensifying across the country and dry extremes increasing in South China.
A deep-Earth water cycle is possible if a key mineral called stishovite can store and transport large amounts of water under extreme conditions. This discovery indicates that water could be present far into the lower mantle, altering our understanding of planetary evolution.
A recent study found that Finnish rivers are transporting 280,000 tonnes more carbon to the Baltic Sea each year than in the early 1990s. The increase is primarily attributed to climate change and its effects on precipitation and temperature.
Research reveals surface discontinuity plays a significant role in developing nearshore convection systems, sustaining precipitation in coastal areas of Korea. The study found changes in wind stress and potential temperature enable these systems, with roughness changes enhancing convergence and energy transfer.
A Yale professor and his team discovered an abrupt 60-year megadrought that led to the collapse of the Neo-Assyrian Empire. The drought weakened the empire's agricultural base, allowing neighboring forces like the Babylonians to conquer Nineveh in three months.
A new model suggests that planting more vegetation may be more effective in drier regions to cool cities, while wetter cities require alternative approaches such as shading or ventilation. The study's findings can provide guidance for climate-sensitive city design and planning heat mitigation efforts.
Agricultural production is likely to increase in West Virginia due to longer growing seasons, despite traditional crops declining. Climate change brings increased precipitation, but also higher humidity that hampers plant growth.
A new study reveals that arctic warming contributes to drought in mid-latitude regions by reducing precipitation and weakening wind patterns. Researchers analyzed geological evidence from lakes and glaciers to estimate past dry conditions, finding that Wyoming experienced several thousand years of drought-like periods.
Researchers found past associations between jet stream dynamics, winter precipitation, and fire activity in California, with dry extremes linked to weaker NPJ zonal velocity. Future climate simulations suggest increasing temperatures will lead to reduced snowpack, drier summers, and increased fire risk under high CO2 conditions.
A new study finds that California's wildfire season is no longer influenced by winter precipitation, but rather by decades of fire suppression and rising temperatures due to climate change. The research team used tree rings and historical records to reconstruct fire and moisture patterns over the past 400 years.
A reanalysis of worldwide annual precipitation trends reveals overlooked risks to human and environmental systems, affecting nearly 40% of the global population and 44% of land areas. The study highlights significant regional variations in precipitation risk and variability, emphasizing the need for more accurate risk assessments.
Tropical Depression Yutu, once a Super Typhoon, has weakened to a depression, with the center of circulation still apparent on MODIS imagery. The Joint Typhoon Warning Center forecasts its complete dissipation by the end of the day.
A new study suggests that a warmer world may equal a wetter Arctic, driven by two climatic processes: melting sea ice and increasing global humidity. Researchers analyzed lakebed mud dating back thousands of years to uncover clues about the region's past climate.
A global analysis by Columbia Engineers reveals a significant increase in storm runoff extremes driven by both climate change and human-induced changes. The study suggests that projected responses of storm runoff extremes will dramatically increase, threatening ecosystem resilience and infrastructure systems.
Scientists investigate the type characteristics of extreme precipitation events and their flood risk in the Yangtze-Huaihe River Valley. Persistent EPEs are linked to continuous flood peaks and severe floods. The study also identifies areas with high flood risk, particularly in rapidly urbanizing regions.
A modeling study demonstrated that latent heating can amplify moisture-driven increases in extreme precipitation by up to a factor of two. The analysis focused on a 2015 extreme precipitation event in Texas.
GPM analyzed Typhoon Jebi as it approached Japan, revealing intense feeder bands of thunderstorms and powerful downpours. The typhoon is forecast to intensify due to favorable environmental conditions, posing a threat to the Japanese islands.
Sub-Tropical Storm Beryl has lost its tropical cyclone characteristics, moving northeast without significant convection. The storm's maximum sustained winds have decreased to 30 knots, indicating a weakening system.
A complex of powerful thunderstorms affected Oklahoma, with NASA's GPM core satellite analyzing storm intensity. More severe weather is forecasted for June 26, highlighting the importance of monitoring severe weather systems.
Researchers used citizen science to analyze slug appearances and complex weather patterns, revealing correlations between humidity, precipitation, and windspeed. This prediction method could inform targeted eradication policies against invasive species like the giant slug.
Researchers found temperature, precipitation, humidity, and cloud cover associated with positive or negative expressed sentiments. Positive expressions increased up to 20 degrees Celsius before declining over 30 degrees Celsius, while high humidity and cloud cover were linked to negative expressions.
Researchers used thousands of observations to find that sagebrush grows at cold sites after warm years but dies at hot sites. The study predicts that populations may decline in warmer areas but increase in colder areas.
A study by Colorado State University found that 19 megacities worldwide depend on evaporation from surrounding lands for more than one-third of their water supplies. Cities such as Karachi and Shanghai are among those most dependent on moisture recycling, while others like Cairo and Paris have less vulnerable systems.
Atmospheric rivers originating in three main clusters exhibit diverse track shapes, landfall regions, and precipitation anomalies. Improved understanding of these features can enhance storm prediction and preparation for their impacts on water supply maintenance.
Researchers at the University of California, Irvine have developed a new satellite-based drought severity index that incorporates groundwater storage. This tool provides reliable information on drought conditions, enabling effective water management and impact assessment.
Cyclone Otis has been devoid of deep convection for about 10 hours, indicating a compact swirl of low-level clouds without generating precipitation. The storm is expected to dissipate due to cool sea surface temperatures and dry air within a day.
Fernanda has weakened from its peak wind speed of 143.75 mph, now with maximum sustained winds near 70 mph and higher gusts. The storm is expected to continue moving west-northwest for the next couple of days before potentially becoming a tropical depression.
UC Riverside researchers predict California will see a 12% increase in precipitation by 2100, with northern and central regions experiencing the largest increases. The study attributes this change to a southeastward shift of the jet stream, encouraged by warming sea surface temperatures.
Temperatures in the Central Pyrenees have risen by 2.5 °C over the past three decades, with a significant increase since 1970. Spring and summer temperatures have been particularly affected, with hot years doubling and cold years decreasing by half.
Scientists at the Institute of Atmospheric Physics have developed a new parameter called potential deformation (PD) to diagnose heavy precipitation. PD is closely related to the occurrence and distribution of strong precipitation, with a correlation coefficient reaching up to 0.7.
The Afro-Asian summer monsoon is projected to intensify and shift northwards following the Atlantic Multidecadal Oscillation (AMO) warm phase since the mid-1990s. Precipitation in the Huanghe-Huaihe River valley increased in the late 1990s, marking a significant change in the region's climate.
A recent study published in Journal of Climate reveals a detectable anthropogenic shift toward heavy precipitation over eastern China. The research suggests that greenhouse gas forcing is the primary driver of this change, with aerosol forcing offsetting some effects.
Researchers at the University of Minnesota have discovered a 500-year cycle of flooding in central China, which can be used to predict broad precipitation patterns in the future. The findings provide insight into climate change over time and improve understanding of monsoon regions.
Feldspar's unique surface defects enable ice crystals to grow, a discovery that sheds light on precipitation formation in clouds. The research found that microscopic edges and cracks on feldspar crystallites serve as active sites for ice nucleation.
Typhoon Chaba intensified into a super typhoon, with extremely heavy precipitation and towering storm tops. NASA satellites used GPM data to track its movement and formation, which was influenced by warm sea surface temperatures and low vertical wind shear.
New research finds that chemical weathering can weaken rock structures in river beds, making them more susceptible to erosion. The study reveals a positive feedback loop where high precipitation rates maintain high erosion rates despite continuously exposing 'fresh rock'.
A new study in Nature finds large variations in precipitation over the past millennium, with stronger extremes in earlier centuries than in the twentieth century. This analysis enables improved accuracy of climate models and better prediction of future precipitation changes.
Recent decades have seen increased frequency of large-scale atmospheric circulation patterns associated with California's precipitation and temperature extremes. The researchers found that the 'Ridiculously Resilient Ridge' pattern, which diverts winter storms northward, has become more common, leading to increased dry conditions.
A new study reveals that warmer spring temperatures have a significant impact on upper Colorado River flows, reducing them more than previously recognized. This finding has implications for drought management and climate modeling, which suggests that warming temperatures will exacerbate drought conditions in the Western US.
Researchers at University of Zurich predict up to 30% less precipitation in the Central Andes by 2100, exacerbating seasonal water shortages. The study suggests stronger westerly winds will lead to greater aridity, impacting the region's climate.
Typhoon Nangka is moving north towards mainland Japan, with NASA satellites tracking its progression. The storm's maximum sustained winds decreased from 65 knots to 75 mph/120 kph, making it a minimal category 1 typhoon.
Researchers found that recent years have seen three of the stormiest seasons on record, with the summer of 2012 being the 'stormiest' since at least 1871. A 142-year climate data study confirms a strong relationship between seasonal precipitation totals and cyclone frequency in the region.
Researchers found that lower oxygen levels led to increased precipitation and warmer temperatures due to the resulting drop in atmospheric density. The study's findings suggest that changes in oxygen concentrations may help explain features of past climates not accounted for by variations in carbon dioxide levels.
A new study by NCAR and CDC researchers finds strong correlations between warmer temperatures and higher rates of West Nile virus disease in the US. Precipitation also influences disease outbreaks, but with varying regional impacts. The study aims to develop a system to forecast outbreaks weeks or months in advance.
The King Fire in California has burned over 92,960 acres since its start in September 2014. The fire is currently 38% contained, with arson as the suspected cause, and is being battled by over 7,600 personnel. Extreme weather conditions, including strong winds and low humidity, are exacerbating the fire's behavior.
Hurricane Norbert's visible bands of thunderstorms spiraled into the center in NASA satellite imagery on September 4, but lost some organization due to easterly vertical wind shear. The hurricane is forecast to track parallel along the coast of Baja California for the next couple of days.
NASA's Aqua satellite captured a visible image of Tropical Storm Karina on August 13, revealing a concentration of strong thunderstorms around its center. The storm is strengthening and expected to become a hurricane late on August 14 as it moves westward through the Eastern Pacific Ocean.
Tropical Storm Nakri formed on August 2 and struggled to organize for a week, eventually becoming visible to NASA's Suomi NPP satellite. The storm dissipated just one day later while approaching the Korean peninsula, with its maximum sustained winds reaching near 40 knots.
Tropical Storm Amanda was bisected by NASA's CloudSat satellite on May 25, 2014, showing a deep area of moderate to heavy-moderate precipitation below the freezing level. The storm had become the strongest May hurricane on record for the Eastern Pacific basin before quickly weakening due to dry air and wind shear.
Cyclone Ian has been battered by strong wind shear, causing its bulk of precipitation to shift east and southeast. The storm's temperature varied greatly, with coldest cloud tops near -63F/-52C in some areas.
Research suggests that decreasing winter winds are a primary driver of streamflow declines and reduced precipitation in the Pacific Northwest mountains. This decrease can lead to increased wildfire risk, earlier and lower streamflows, and decreased water availability for communities and industries.
A new CU-Boulder study reveals a significant increase in dust emissions across the Western United States over the past 17 years. The research found that dust erosion is linked to an increase in calcium deposition in precipitation, with major increases observed in Colorado, Wyoming, and Utah.