Articles tagged with Anthropogenic Climate Change
The AAS Special Issue on the Chinese Carbon Budget Program presents research on accurate estimation of national GHG emissions, terrestrial carbon budget, and potential for increasing carbon sinks. Eight papers cover various topics, including aerosols, airborne observations, and CO2 monitoring from space.
UCSB scientists compared decades-old data with new field observations to evaluate multidecadal change in sandy beach biodiversity. They found that local processes exerted a stronger influence on intertidal biodiversity than regional factors.
Researchers at Tel Aviv University discovered basin-wide erosion rates incompatible with known tectonic and climatic regimes of the period. The findings indicate that human impact on the environment began significantly affecting the Earth's geology around 11,500 years ago.
A study by Lehigh University sociologist Dr. Kelly Austin finds a link between deforestation and increasing malaria rates across developing nations due to rural population growth, agricultural specialization, and increased standing water and sunlight favoring Anopheles mosquito species.
University of California, San Diego researchers found that phytoplankton and bacteria in the water affect sea spray aerosol's atmospheric-changing properties. This influences cloud formation and climate change.
Researchers found unprecedented dieback of 7400 hectares of mangroves in the Gulf of Carpentaria due to prolonged drought, record-breaking heatwaves, and a 20cm sea level drop. This discovery highlights mangroves' vulnerability to climate change and extreme weather events.
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.
Ocean absorbing more carbon dioxide reduces atmospheric greenhouse gas levels, but promotes acidification in marine organisms. A study by UC Santa Barbara geographer Timothy DeVries and colleagues found that a slowdown of the ocean's overturning circulation is likely the cause.
Groundwater exploitation causes drying in deep soil layers but wetting in upper layers, leading to unsustainable terrestrial water storage. The atmosphere responds with cooling over certain regions and increased precipitation due to evapotranspiration from groundwater irrigation.
Research suggests that hurricanes approaching the US coast are more likely to intensify during less active Atlantic periods, weakening instead of strengthening. This relationship accounts for part of the weak correlation between Atlantic hurricane activity and major landfalls.
A new study published in Nature finds that hurricanes approaching the US coast are more likely to intensify during less active Atlantic periods, contradicting previous assumptions about hurricane behavior. This discovery suggests that coastal regions may be better protected by quieter periods in the basin.
A mathematical model by Carl Bergstrom and colleagues explores the effect of publication bias on fact canonization in science. The study found that lower publication rates for negative results increase the risk of false canonization, but suggest that publishing more negative results could help minimize this risk.
Researchers used supercomputer simulations to confirm the link between human-induced climate change and deadly heat waves in India and Pakistan. The study found a substantial increase in the likelihood of such heat waves, with chances expected to rise as global warming continues.
The Intergovernmental Panel on Climate Change (IPCC) should include ocean variability and regional projections in its reports to better understand the impacts of climate change on marine ecosystems. Experts from the University of Bristol and Tasmania recommend incorporating local stressors and regional projections into policy decisions.
Climate model experiments suggest Northeast Asia has experienced abrupt summer warming, with significant changes in temperature extremes since the mid-1990s. Dr. DONG's team attributes these changes to natural variability and anthropogenic forcings, with reduced aerosol precursor emissions over Europe playing a crucial role.
Experts predict that soils will lose a significant amount of their carbon content, leading to increased soil erosion and flood damage. Land use changes and management practices are crucial to mitigate this trend and protect soil functions.
The study analyzed the macrobenthic assemblages of Southern Bohai Sea over a 60-year period, revealing a shift from K strategy species to R strategy species. The succession process was influenced by environmental changes, including increased seawater salinity and temperature, and human activities such as over-fishing.
A national survey found that awareness of Laudato Si' did not increase concern over climate change, but rather polarized views among Catholics and non-Catholics. Liberals who knew about the encyclical were more concerned about climate change than those who didn't.
Researchers reconstruct climate and oceanographic conditions in the westernmost Mediterranean Sea, revealing hot and dry Medieval Climatic Anomaly and cooler Little Ice Age conditions. Human impact also detected in temperature increase, aridification, and soil erosion.
A new study reveals that climate change can hinder scientific projections of storm tracks, with multiple environmental influences at play. The 'tug of war' between Arctic amplification and tropical warming affects the position of storm tracks, impacting iconic cities worldwide.
A North Carolina State University study found that teachers' beliefs about climate change affect students' perceptions, with 92% of students mirroring their teacher's belief in global warming. However, students diverge from their teachers when it comes to understanding the human causes of climate change.
Storm tracks are crucial for weather and climate in middle-latitude regions like Chicago and New York. Climate change alters the position of these tracks, with clouds playing a key role in this shift. Researchers highlight the need to expand observational efforts and improve computer simulations to better understand storm track changes.
A new study finds human activity has been causing global warming since the early stages of the Industrial Revolution. The research suggests that greenhouse gas levels rose in the atmosphere during the 1800s, leading to rapid and measurable warming in tropical oceans and the Arctic.
Researchers at Stockholm University and the University of Miami found that thin mid-level clouds in the tropics cool the climate by about 20 W m-2, significantly more than previously thought. This study aims to bridge gaps in knowledge about these challenging-to-study clouds.
A study published by the University of Oxford found that man-made climate change was responsible for hundreds of deaths in two European cities during a 2003 heatwave. The research used computer simulations and health impact assessments to estimate the number of premature deaths attributed to climate change.
A recent climate study found a significant correlation between human activity and enhanced vegetation growth in the Northern Hemisphere. The research, led by Oak Ridge National Laboratory, used advanced statistical methods to detect the human 'fingerprint' behind this phenomenon.
A study by Karlsruhe Institute of Technology and Swedish-US partners found that demographic development has a significant impact on wildfires, with population growth reducing fire frequency. However, this does not mean the risk of fires will decrease, as growing population density in fire-susceptible regions increases the risk.
A new study examines human behavior's impact on wildfires in California, finding that it explains as much about their frequency and location as climate change. The researchers recommend considering both climate change and human variables for future models to accurately predict wildfire risks.
The study found that Acropora corals, responsible for modern reef growth, are experiencing sharp declines in abundance worldwide. However, by managing local anthropogenic stressors such as pollution and over-fishing, it is possible to increase their resistance to climate change and preserve these corals.
Recent summer temperatures in Europe have exceeded those of the past two millennia, according to a new study that used tree-ring information and historical evidence. The research suggests that past natural changes in summer temperature are larger than previously thought, potentially leading to more extreme events.
A new study reveals that human activities are the main cause of hypoxia in freshwaters worldwide, with 71 lakes showing significant changes since the mid-19th century. Aquatic rehabilitation programs have failed to restore lake ecosystems to their original well-oxygenated state.
Researchers at the Alfred Wegener Institute found that a 15-year observation series reveals how sensitive arctic marine ecosystems are to change. The study indicates that even a short-term influx of warm water can fundamentally impact local symbiotic communities, leading to changes in deep-sea life.
A recent study from the University of Eastern Finland found that man-made snow drifts improved breeding success in seals during winters with poor snow conditions. The study developed novel methods for monitoring and conserving the critically endangered Saimaa ringed seal subspecies.
The study found that pteropods, a tiny sea snail, will struggle to form their shells due to low carbonate ion concentration. The duration of undersaturation events will increase abruptly, posing an uncertain adaptation for vulnerable marine organisms.
A Purdue University-led survey of nearly 700 scientists from non-climate disciplines found that an overwhelming majority believe in anthropogenic climate change and are highly certain of their beliefs. The study suggests that cultural values, political ideologies, and personal identity influence scientists' views on climate change.
Researchers investigated ocean temperature changes over centuries using climate models and fossil records. They found that volcanic eruptions caused progressive cooling until the Industrial Revolution, which marked a shift towards global warming. Understanding past climate patterns can provide insights into future climate changes.
A study found that climate change can rapidly alter plant genetic diversity, but also enable an 'evolutionary rescue' through increased adaptability. The research suggests that genetic diversity may buffer plants against harmful effects of climate change.
Dogs evolved to pursue-pounce predators in response to climate change, shifting from ambushing to endurance running, according to a new fossil study. The research suggests that predators adapt to changing habitats rather than their prey's anatomy.
A recent study from the University of Edinburgh found that a slow-down in global warming is likely due to natural variation and not a sign of climate change ending. The research analyzed over 200 years' worth of temperature data and supported previous findings that short-term pauses are temporary.
Researchers found a connection between climate and airline flight times, suggesting a feedback loop between carbon emissions and warming climate. The study suggests that climate variability determines flight times, with faster winds resulting in shorter flights and increased fuel consumption.
Researchers found indications of a 6-million-year interruption in the interglacial period in the Arctic Ocean during the Cretaceous period. The team analyzed glendonites and sediment cores to reconstruct climate conditions, including a severe cold snap that interrupted the warmest era of the past 145 million years.
Scientists analyzed 1,350 congressional testimonies and found that experts generally agree on global warming and human causation. Despite Republican-controlled congresses featuring skeptical scientists, the majority still support action to combat climate change.
Ecosystems subjected to disturbances like fires or insect outbreaks are more sensitive to climate change, research finds. The study suggests that reducing disturbance intensity and frequency can help make ecosystems less vulnerable to climatic change.
A study by Potsdam Institute for Climate Impact Research reveals that climate change is weakening summer storms in the Northern hemisphere mid-latitudes, resulting in more persistent heat extremes. This reduction in storm activity allows warm weather conditions to endure, leading to an increase in heat waves and droughts.
Climate scientists found that natural oscillations in the Atlantic and Pacific oceans contributed to a 'false pause' in global warming. The researchers discovered a sharply down-trending Pacific multidecadal oscillation (PMO) was the primary driver of this slowdown.
Urbanization leads to more thunderstorm initiation events, posing dangers like lightning and flash floods with little warning. The risk is higher on weekdays due to increased aerosol levels from commuters.
A study by the Potsdam Institute for Climate Impact Research found that forest protection policies alone will not reduce CO2 emissions from land-use change. Implementing comprehensive conservation schemes covering all land types is crucial, as intensifying agriculture can generate higher yields to compensate for reduced land availability.
Breeding salt-tolerant crops could be a game-changer in addressing soil salinity issues, threatening 3 hectares of usable land every minute. Researchers propose using 'salt bladders' to deposit excess salt, inspired by naturally salt-loving plants.
A recent study reveals that human activity is a significant contributor to glacier mass loss, with a notable increase in recent decades. The research suggests that only about one quarter of global glacier mass loss between 1851 and 2010 was due to anthropogenic causes, but this fraction rose to two-thirds during the last two decades.
The Great Barrier Reef is under severe threat due to the combined effects of natural El Nino phase, anthropogenic climate change and coastal development. The reef's resilience will be significantly impacted by degraded conditions caused by dredging activity and river runoff.
A recent study reveals significant resonance cycles between solar activity and Earth's surface temperature, providing a possible explanation for recent global warming. The research uses wavelet analysis and cross-correlation methods to investigate the periodicities of solar activity and its correlations with the Earth's temperature dur...
A study published in Avian Conservation and Ecology reveals that the iconic Blue-footed Booby population has declined by over 50% in less than two decades. The drastic drop is attributed to a lack of sardines in their diet, leading adult birds to elect not to breed, which in turn causes the population to shrink.
A US Forest Service study reveals that five anthropogenic factors, including urbanization, invasive species, and lack of forest management, will significantly alter northern forests over the next 50 years. The report highlights the need for proactive conservation efforts to ensure resilient and healthy forests.
A new study by McGill University professor Shaun Lovejoy uses statistical analysis to determine the probability that global warming since 1880 is due to natural variability. The study concludes that the natural-warming hypothesis can be ruled out with confidence levels greater than 99%, and most likely greater than 99.9%.
Researchers found that climate change is shrinking Antarctic Bottom Waters, a massive current that 'hides' heat and carbon from the atmosphere. This reduction in convection could lead to increased heat trapping in the deeper ocean, contributing to global warming.
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.
Researchers attribute Arctic surface temperature variation from 1900 to present to a combination of greenhouse gas emissions, anthropogenic sulfate aerosols, and volcanic eruptions. The study demonstrates the importance of aerosols in climate forcing and sheds light on the environmental and economic impacts of Arctic climate change.
By 2040, heat extremes are expected to increase substantially due to climate change, affecting 85% of the global land area. Reducing greenhouse gas emissions could prevent this, but current trends suggest a near-term inevitability.
A University of Iowa study analyzed 70 years of flood records in Texas and found that human modifications, such as river regulation, contribute significantly to the state's flood-prone nature. Tropical cyclones are less responsible for major floods in Texas than in other regions.
A new study by Richard Zeebe suggests that amplified and prolonged warming due to unabated fossil fuel burning raises the probability of large ice sheets melting, leading to significant sea level rise. Climate sensitivity may change over time, potentially making future climate change more severe and longer-lasting.