Tag

Co2

All articles tagged with #co2

science5 days ago•4 min saved

CO2's paradox: surface warming, stratospheric cooling explained

A Nature Geoscience study shows rising CO2 makes the stratosphere more efficient at radiating infrared heat into space, causing cooling of the upper atmosphere (about 2°C since the mid-1980s), with faster cooling higher up near the stratopause. Researchers describe a 'Goldilocks zone' of infrared wavelengths that drive this cooling, while ozone and water vapor play smaller roles. If CO2 doubles, stratospheric temperatures near the stratopause may drop roughly 8°C, highlighting a key, quantifiable climate fingerprint and its implications for Earth's energy balance and exoplanet atmospheres.

via The Daily Galaxy|

#climate-change #co2 #cooling

science14 days ago•4 min saved

Antarctic Ice Core Extends Earth's Climate Record to 1.2 Million Years

Europe-wide researchers drilled a 2.8-km Antarctic ice core to produce the longest continuous climate record, about 1.2 million years, showing atmospheric CO2 closely tracking global temperatures across repeated cycles and offering new clues to why ice ages intensified during the Mid-Pleistocene transition. The Beyond EPICA findings—presented at the European Geosciences Union meeting—are early results, not yet peer‑reviewed, with more data to come from the ancient air bubbles trapped in the ice.

via Nature|

#antarctica #climate-science #co2

wellness1 month ago•14 min saved

Why Mosquitoes Bite Some People More—and How to Prevent It

Mosquitoes aren’t equally attracted to everyone: factors like blood type (Type O vs A), CO2 output, lactic acid, body heat, and even clothing color can make some people more likely to be bitten. To prevent bites, avoid peak mosquito times (dawn/dusk), cover exposed skin, use a 5% DEET repellent for about 90 minutes of protection, and keep air moving with a fan. Citronella lacks solid evidence; if bitten, treat with ice, hydrocortisone, or non-drowsy antihistamines.

via HuffPost|

#bites #blood-type #co2

science2 months ago•32 min saved

Ancient ice records reveal stable greenhouse gas levels over 3 million years

New shallow Allan Hills blue-ice cores extend greenhouse-gas records to about 3.1–0.5 million years ago. They show mean CH4 changing little over the period, with CO2 falling by ~20 ppm from 2.9 to 1.2 Ma and then staying stable within ±10 ppm through the mid‑Pleistocene Transition; respiration-corrected samples from 2.8–3.1 Ma yield CO2 of 250 ± 10 ppm, indistinguishable from the early Pleistocene. These results suggest long‑term stability of atmospheric CO2 and CH4 and demonstrate that ice-core gas measurements can be extended into the late Pliocene, providing snapshots of climate during a era of global cooling.

via Nature|

#ch4 #climate-science #co2

environment2 months ago•16 min saved

Earth’s moving green center points northeast as vegetation responds to climate and CO2

Decades of satellite observations show Earth's vegetation forms a moving balance point across continents and seasons, with the global center of greenery migrating northeast as climate change and higher CO2 reshape growing conditions. The shift is dominated by Northern Hemisphere vegetation, has accelerated since 2010, and is linked to longer growing seasons and land management in reliable water regions, while drought and heat can still slow growth. Researchers suggest tracking this moving center could help explain planetary vegetation patterns and improve climate and land-use models.

via Earth.com|

#centerofvegetation #co2 #environment

science3 months ago•4 min saved

Dinosaurs Weathered Slow Warming; Humans Face Rapid Climate Change

The piece contrasts ancient Earth, where warming occurred over millions of years with high CO2 levels allowing life to adapt, with today’s rapid ~1°C increase in two centuries due to fossil-fuel emissions, a pace that outstrips ecosystems and infrastructure. While dinosaurs ultimately faced mass extinction after a sudden, asteroid-triggered climate disruption, the article argues that the current rapid change poses a distinct and escalating risk to human health, economies, and environments.

via The Daily Galaxy|

#ancient-earth #climate-change #co2

book-review8 months ago•1 min saved

The Impact of CO2 on Human Evolution and Earth's History

Peter Brannen's book argues that CO2, often vilified for its role in climate change, is actually fundamental to the development of life and human civilization, offering a comprehensive history from origins to modern issues.

via The New York Times|

#book-review #climate-change #co2

science9 months ago•4 min saved

Scientists Excited by Interstellar Comet 3I/ATLAS and Its Mysteries

Recent observations of interstellar object 3I/ATLAS by NASA's SPHEREx reveal a large CO2 cloud with no detectable water vapor, suggesting it may not be a water-rich comet as previously thought, and indicating a potentially large nucleus around 46 km in diameter. The findings challenge earlier claims and raise questions about the object's composition and origin.

via Avi Loeb – Medium|

#3iatlas #co2 #comet

science10 months ago•3 min saved

James Webb Telescope Uncovers New Insights into Europa's Hidden Ocean and Ice

Scientists have found that the unexpected distribution of hydrogen peroxide on Europa's surface may be explained by the presence of CO2, which enhances peroxide production by capturing electrons during radiation, providing new insights into the moon's surface chemistry and potential habitability.

via Space|

#co2 #europa #hydrogen-peroxide

science-and-health2 years ago•11 min saved

"CO2 Prolongs Airborne Virus Survival"

New research from the University of Bristol reveals that higher concentrations of carbon dioxide (CO2) in indoor environments can significantly extend the lifespan of airborne viruses like SARS-CoV-2, challenging long-held beliefs about CO2 as merely an indicator of poor ventilation. This discovery underscores the need for improved indoor air quality standards to mitigate the risk of viral transmission, especially in poorly ventilated spaces.

via STAT|

#co2 #indoor-air-quality #sars-cov-2

science-and-technology2 years ago•3 min saved

"Carbon-Consuming Nanogenerator Produces Sustainable Electricity"

Researchers at the University of Queensland have developed a proof-of-concept nanogenerator that absorbs carbon dioxide (CO2) to generate electricity. The nanogenerator consists of a polyamine gel and boron nitrate that generates positive and negative ions, creating a diffusion current that can be amplified into electricity. The technology has the potential to be used in portable devices like mobile phones and laptops, as well as in industrial CO2 capture processes to harvest electricity. This innovation aims to change the perception of CO2 from a problem to a valuable resource for the future.

via Tech Xplore|

#co2 #electricity #nanogenerator

climate-science2 years ago•4 min saved

"Ice Age Climate Analysis: Insights into Climate Change and CO₂ Impact"

A new study led by the University of Washington analyzes the last ice age to better understand the relationship between CO2 and global temperature. The research suggests that the worst-case scenario for future warming due to doubling of CO2 is less likely, reducing the estimate from 5 to 4 degrees Celsius. By examining the cooling effects of the North American ice sheet during the last glacial maximum, the study indicates that CO2 played a smaller role in setting ice age temperatures than previously estimated. This research provides more confident predictions for future warming and emphasizes the limitations of using recent decades as a predictor of future global warming.

via Phys.org|

#climate-projections #climate-science #climate-sensitivity

science-and-technology2 years ago•3 min saved

"Revolutionary Research Unlocks CO₂ Conversion into Sustainable Fuel"

Researchers have developed a material consisting of copper anchored on nanocrystalline carbon nitride, which, when exposed to sunlight, can efficiently convert CO2 into methanol, a green fuel. This breakthrough paves the way for creating sustainable fuels and reducing the impact of carbon dioxide, the primary contributor to global warming. The new catalyst, made of abundant elements like carbon, nitrogen, and copper, demonstrates high efficiency and selectivity, offering a promising pathway for the development of highly tunable catalysts at the nanoscale for CO2 conversion.

via Tech Xplore|

#co2 #methanol #photocatalysis

environment2 years ago•2 min saved

"Carbon-Capturing Trees Struggle to Absorb Excess CO2, Emitting Instead"

Trees in warmer, drier climates are struggling to absorb excess CO2 and are instead releasing it back into the atmosphere, a process known as photorespiration. This subverts the belief that trees can help reduce carbon emissions, and as global warming increases, the ability of trees to absorb CO2 is expected to decrease significantly. Researchers found that in hotter climates, trees are releasing up to two times more CO2, and any climate exceeding average daytime temperatures of around 68 degrees Fahrenheit experiences this effect. This discovery raises concerns about the future impact of climate change on the planet's ability to mitigate CO2 levels.

via Futurism|

#climate-change #co2 #environment

environment-and-science2 years ago•1 min saved

"Exploring Celestial Influences on Climate Change Beyond CO2"

Climate expert Willie Soon challenges the mainstream scientific consensus on climate change, arguing that changes in the sun's energy output, rather than rising carbon dioxide levels, are the primary driver of Earth's climate shifts. Soon, associated with The Heritage Foundation, emphasizes the importance of data over belief in science and discusses the sun's role in historical climate cycles. His views are part of a podcast series by The Daily Signal, where he seeks to correct what he sees as misconceptions about the causes of climate change.

via Daily Signal|

##climatechange #climatescience