The GISS 'SI2000' climate model demonstrates that global temperature change is mainly a response to human-made forcings, such as carbon dioxide and methane. The study projects possible futures under two contrasting scenarios, with minimal warming if air pollution decreases and CO2 emissions are stabilized.
Researchers used the GISS SI2000 climate model to simulate past and future global temperature changes, finding that human-made forcings are mainly responsible for recent warming. The study suggests that reducing air pollution and stabilizing carbon dioxide emissions could limit warming to 0.75°C over the next 50 years.
A new study suggests that cosmic rays could be the cause of global warming, proposing a height-dependent effect on cloudiness. The research proposes that increased cosmic ray intensity during periods of decreased solar wind may contribute to global cooling by stimulating the formation of dense clouds.
A team of researchers has found that the continents have warmed significantly over the past half-century, similar to the warming of the oceans, atmosphere, and ice. The study used temperature readings from six continents to reconstruct a temperature history for the Earth's surface over the past 500 years.
Climate models predict significant temperature increases and sea level rise over the next century. The effects of carbon dioxide emissions from fossil fuels will last for at least 100 years, regardless of current reductions.
The Pinatubo eruption validated computer-generated climate models demonstrating human-caused global warming. The sulfuric acid cloud altered winds and weather patterns, causing cooler summers and warmer winters worldwide.
A new study finds that global warming will increase the length of the day by 0.11 seconds over the century due to changes in Earth's angular momentum. The effect is expected to be small and difficult to distinguish from natural variations, but measurable on a decade scale.
Researchers at NSF Longterm Ecological Research in Antarctica found a cooling trend on the continent, contradicting global warming expectations. The study indicates that most of the continent is cooling, posing challenges to climate models and potentially affecting unique ecosystems.
A recent deep-sea drilling expedition off Japan has revealed that vast areas of the Pacific Ocean were low in oxygen for periods of up to a million years each. The expedition, which lasted two months, uncovered evidence of global warming events more common than previously thought, with some occurring every thousand years.
A recent study by NASA researchers analyzed global weather stations and satellite observations to identify minimal local human influence. They found larger warming at urban stations on average, but used rural stations to adjust the records for a more accurate climate change measure.
A new trial found that warming patients before short duration, clean surgery significantly reduced wound infection rates. The study compared warmed and non-warmed groups and found a substantial reduction in infections in the warmed group, with only 5% of patients developing wound infections.
New estimates suggest that Earth's temperature could rise between 1.7 and 4.9 degrees Celsius over the next 100 years, with a 90% likelihood of warming within this range. The likelihood of more extreme warming scenarios is low, but still poses significant risks to society if not addressed through climate control measures.
Researchers found a record warming event in Antarctica around 19,000 years ago, with temperatures rising up to 18 degrees Fahrenheit in just a few decades. This event may have been the trigger for the end of the last ice age and rivalled strong warming events in the Northern Hemisphere.
The NASA Earth Observing System (EOS) Global Change Media Directory 2001 features over 343 scientists from 50 disciplines, including climate change, natural hazards, ozone, water resources, and global warming. The directory contains a list of experts with complete contact information.
A study by Stanford researchers reveals that global warming is causing a significant shift in marine species distribution, with many vulnerable intertidal creatures already struggling to cope. Rising temperatures are pushing species over their thermal tolerance range, leading to declines and potential extinctions.
Scientists have assembled a 150-year lake and river ice record spanning the Northern Hemisphere, showing a steady warming trend. The average rate of change over the 150-year period was 8.7 days later for freeze dates and 9.8 days earlier for breakup dates.
Researchers at the University of Illinois found a cyclic contribution to global temperature change that may be masking human effects. The residual factor, which occurs over a 65-70 year period, periodically warms and cools the atmosphere, sometimes counteracting the greenhouse effect.
Scientists discover a 1,800-year tidal cycle that matches recent climate change, suggesting a natural warming trend began a hundred years ago. The study suggests strong oceanic tides drive changes in climate by increasing vertical mixing, resulting in cooler climates and drought conditions.
New research suggests that aerosol pollutants in the atmosphere are likely masking global warming. Aerosols can modify clouds, suppress precipitation, and reflect light, cooling the Earth. This effect may be as large as the warming caused by human emissions of greenhouse gases.
Researchers at NOAA's National Climate Data Center found evidence that the rate of global warming is accelerating, with recent record high temperatures surpassing expectations. The study analyzed data from 1997 to 1999 and concluded that the rate of warming since 1976 is greater than previously predicted.
Global warming accelerates human disease outbreaks, malnutrition, and environmental degradation due to increased pollution and crop losses. As populations grow, crowded cities will become breeding grounds for diseases like dengue fever, while waterborne illnesses spread unchecked.
Researchers discovered strong evidence of a 55.5 million-year-old global warming event linked to a massive methane release. The 'latest Paleocene thermal maximum' led to the extinction or disappearance of deep-sea species and changed ecosystems. Further research is needed to understand this phenomenon.
A University of Illinois professor warns that decreasing sulfur dioxide emissions could exacerbate global warming by enhancing temperature changes in North America, Europe, and Asia. The studies used climate/ocean models to calculate the potential effects of reduced sulfur dioxide emissions on global-mean surface temperatures.
Northern Hemisphere winters have warmed by up to nine degrees Fahrenheit over the last 30 years, likely due to human activities increasing greenhouse gases. Warmer winters will bring more wet weather to Europe and Western North America.
New research suggests that increased Arctic temperatures due to global warming can lead to higher levels of carbon dioxide emissions, fueling global warming further. The study found that artificially elevating summer temperatures in arctic tundra resulted in significant losses of carbon dioxide from the soil.
A team of researchers has deployed an Atmospheric Radiation and Cloud Station (ARCS) on the Pacific island of Nauru to study clouds and sunlight. The station will gather information for at least 10 years, providing insights into global warming effects and El Niño/La Niña weather phenomena.
A 2,000-year-old climate warming event was discovered in East Africa by analyzing sediment cores from a high-altitude lake. This study suggests that the climate can warm up suddenly without human activity, providing new insights into past climate fluctuations and potentially informing predictions about future climate change.
The Duke scientists analyzed past climate changes and found that the region rapidly changed with even short-term climate fluctuations, making it susceptible to drastic ecological changes. The researchers expect that global warming will significantly increase temperatures worldwide over the next century, leading to shifts in air masses ...
Astronomers have observed a significant increase in Triton's surface temperature, causing its thin atmosphere to thicken, and potentially leading to global warming. The moon is approaching an unusually warm summer season, with temperatures rising by 5% over the past nine years.
A year-long study predicts severe impacts of global warming on North American prairies, with water shortages and habitat loss threatening migratory birds. The changing climate could lead to further ecosystem upheavals, forcing native species out as nuisance plants move in.
A new Yale University study estimates the lifetime economic cost of each person to society, taking into account global warming and other factors. The study suggests that the shadow price of a person comes out to about 30% of per capita Gross Domestic Product.
A new study has confirmed that the Earth's surface temperature has increased by about 1 degree C over the last five centuries, with the majority of this warming happening in the last 100 years. The study used data from 300 underground boreholes across four continents to find a global average temperature increase since 1900.
Researchers found that some chemicals being phased out for ozone protection have offsetting benefits, such as reducing greenhouse gas emissions. The study suggests that environmental policies should consider both ozone depletion and global warming together.
Drilling in the Caribbean Basin uncovered evidence of massive volcanic eruptions 55 million years ago, which triggered a dramatic climatic change and rapid ocean water inversion. This led to the release of sea floor methane into the atmosphere, causing global warming and speeding evolution of new species.
Recent satellite data show no definitive warming trend in Earth's lower atmosphere over past two decades, contradicting computer models' predictions. The accurate temperature measurements are verified by multiple methods, including balloon-borne observations and intercalibration among orbiting platforms.
Over 1,500 scientists, including most Nobel laureates in science, call on governments to act immediately to prevent devastating consequences of human-induced global warming. A strong climate treaty would address the planet's most serious threats and protect future generations.
The discovery contradicts the 'sulfate paradigm' which suggested sulfates offset the cooling effect of greenhouse gases. New findings indicate a potential increase in global warming due to absorbing solar radiation, not reflecting it like sulfates.
A recent study by Ohio State University researchers presents compelling evidence of global warming in the tropics and subtropics, with melting ice caps and rising temperatures in alpine regions. The findings suggest that these areas will face significant challenges due to water stress and population growth.
Research from NASA and the Global Hydrology and Climate Center suggests that the temperature structure of the atmosphere is more complex than previously thought. The study found a slight downward trend in the lower troposphere since 1979, while surface measurements show a warming trend.
Scientists at Yale University found that seasonal temperature trends have been arriving earlier each year since the turn of the century, contradicting predictions by two leading computer models. Regional patterns and variations in temperature changes were also discovered, highlighting limitations in current climate modeling.