Tag

Climate Modeling

All articles tagged with #climate modeling

atmospheric-science16 days ago•16 min saved

MSA speeds up cold-region aerosol formation, reshaping climate projections

A CERN CLOUD chamber study shows methanesulfonic acid (MSA) nucleates with ammonia below −10 °C at rates comparable to sulfuric acid, and forms synergistic multi-acid clusters with SA. Even with very low ammonia, MSA drives particle growth near the kinetic limit below 9 °C at relative humidity above 40%. Since MSA and SA co-occur in cool marine regions, nucleation rates could be up to ten times faster and growth up to twofold compared with SA–NH3 alone, potentially boosting CCN concentrations, especially in polar regions. Global modeling indicates MSA is an important, currently underrepresented driver of biogenic particles in cool marine atmospheres, affecting present and pre-industrial climate.

via Nature|

#aerosol-nucleation #ammonia #atmospheric-science

science25 days ago•7 min saved

Earth’s extended life window: life could endure for nearly two billion more years as the Sun brightens

New 3D climate-models suggest Earth could support life for roughly 1.0–1.9 billion more years as the Sun brightens; strong weathering drives CO2 down and most land plants die, while weak weathering keeps CO2 higher and lets some plants survive longer. The results are more optimistic than earlier estimates and note geoengineering or evolution could further extend the window.

via Ars Technica|

#climate-modeling #co2-cycle #earth-future

science1 month ago•6 min saved

Earth’s 27° East Albedo Symmetry Stumps Climate Models

Scientists report a persistent east–west albedo symmetry around 27° E—a triple symmetry that climate models currently fail to reproduce and which could refine future climate projections—alongside briefs on dolphins using individual vocal labels to avoid coercive males, urban bowerbirds decorating with human trash, and titanosaurs’ bones hosting beetle-driven ichnofacies after death.

via 404 Media|

#albedo #bowerbirds #climate-modeling

science2 months ago•55 min saved

CAM-like photosynthesis may have aided lycophytes through the Permian–Triassic crisis

A study links Early Triassic pioneer lycophytes to modern Isoetes, showing a CAM-like photosynthetic strategy that could have boosted survival under extreme heat and drought during the Permian–Triassic mass extinction. Climate-model simulations show land temperatures exceeding modern C3 tolerance, while carbon-isotope data suggest these plants employed a mixed C3/CAM physiology. The work implies CAM flexibility helped sustain low-diversity lycophyte communities, influencing ecosystem recovery and broader carbon cycling in a greenhouse Early Triassic world.

via Nature|

#cam-photosynthesis #climate-modeling #isoetes

science4 months ago•15 min saved

Chasing Clouds: AI Rewrites the Rules of Climate Modeling

Clouds remain the biggest uncertainty in climate projections, pushing researchers to blend physics with AI. Projects like CLIMA and ACE2 train neural networks on real atmospheric data and high‑resolution cloud simulations to emulate cloud effects more accurately and, in some cases, to forecast with far less computational cost than traditional Navier‑Stokes–based models. CLIMA refines cloud parameters through large-eddy simulations to double model accuracy, while ACE2 uses data-driven forecasts to capture cloud-influenced dynamics and speed up predictions, sparking debate over long-term reliability and the best balance between data and physics.

via Quanta Magazine|

#artificial-intelligence #climate-modeling #clouds

energy-and-climate4 months ago•5 min saved

US urges IEA to drop net-zero modeling

At a closed-door IEA ministerial in Paris, U.S. Energy Secretary Chris Wright urged the agency to abandon net-zero emissions scenarios, arguing such targets are unrealistic. The push drew muted pushback as European ministers stressed continued renewables expansion; Wright’s hardline rhetoric has faced rejection from several countries, and talks on the issue will continue.

via politico.eu|

#climate-modeling #energy-and-climate #iea

science4 months ago•6 min saved

Earth May Reassemble into a New Supercontinent, Bringing Drastic Climate Shifts and Extinction Risks

Scientists outline four possible future supercontinents—Novopangea, Pangea Proxima, Aurica, and Amasia—each arising from how today’s oceans evolve, with climate models predicting divergent outcomes (cooling and expanded ice in some scenarios, warmer, drier conditions in Aurica, and potential widespread glaciation in Amasia). While these projections show strikingly different worlds, they share high uncertainty and stress that substantial ecological disruption or extinction could accompany a new planetary union; humanity’s long-term survival may hinge on living in harmony with Earth's ecosystems.

via Indian Defence Review|

#climate-modeling #future-earth #mass-extinction

science8 months ago•4 min saved

Scientists Develop 1-Kilometer Scale Digital Twin of Earth

Scientists have developed a highly detailed digital twin of Earth with a resolution of approximately 1.25 km, integrating weather and climate models using advanced supercomputers and software engineering, marking a significant breakthrough in climate prediction capabilities.

via ScienceAlert|

#climate-modeling #digital-twin #earth

science9 months ago•4 min saved

Exploring the Future of Human Habitats on Mars

Recent technological advances have shifted the debate on Mars terraforming from impossible to challenging, with proposals including warming the planet, creating liquid water, and introducing microbes to eventually establish a breathable atmosphere. Researchers emphasize the importance of careful research, ethical considerations, and understanding potential risks before attempting large-scale planetary transformation.

via Universe Today|

#climate-modeling #mars #science

science9 months ago•16 min saved

Stunning Photos Reveal the Power of Climate Science

The article highlights the extensive efforts and advanced technologies used in climate science, including fieldwork in remote locations, ice core analysis, cloud research, and satellite monitoring, to understand Earth's climate system and address global warming.

via Quanta Magazine|

#atmospheric-gases #climate-modeling #climate-science

science-and-technology1 year ago•5 min saved

AI and Biology: Pioneering the Future of Scientific Innovation

AI is significantly advancing scientific research by enabling breakthroughs in protein structure prediction, brain mapping, materials science, climate forecasting, and fundamental physics, while also paving the way for autonomous laboratories and AI-driven hypothesis generation, despite some challenges in interpretability and understanding.

via SingularityHub|

#ai-in-science #climate-modeling #deepmind

science1 year ago•4 min saved

Scientists Outline 3-Step Plan for Terraforming Mars

Scientists propose a practical three-step plan to terraform Mars, involving warming the planet with solar mirrors, seeding extremophile organisms to create an oxygen atmosphere, and potentially making it habitable within centuries, leveraging recent advances in climate modeling, space tech, and synthetic biology.

via SciTechDaily|

#climate-modeling #mars #science

science1 year ago•3 min saved

Experts Warn of Climate Chaos from Next Major Volcanic Eruption

Scientists warn that a major volcanic eruption could cause severe climate chaos, especially in a warming world, with historical precedents and future risks highlighting the need for better prediction models and preparedness to mitigate potential global impacts.

via Farmingdale Observer|

#climate-chaos #climate-modeling #global-warming

science1 year ago•2 min saved

New Study Confirms Venus Never Had Oceans or Earth-like Life

New research from the University of Cambridge suggests that Venus may never have had oceans, challenging previous theories that it once had a temperate climate with liquid water. The study indicates that Venus' atmosphere and interior lack the necessary hydrogen for liquid water, implying it has always been dry. This contrasts with earlier models suggesting Venus might have been habitable. The findings highlight the planet's extreme conditions, including high temperatures and pressure, and toxic clouds, making it inhospitable.

via Sky News|

#astrochemistry #climate-modeling #habitability

science2 years ago•3 min saved

"Unveiling the Impact of Supervolcano Eruptions on Global Climate"

New research from NASA's Goddard Institute for Space Studies and Columbia University suggests that extreme volcanic super-eruptions may not lead to as severe cooling of Earth's surface temperatures as previously estimated. Using advanced computer modeling, the study found that post-eruption cooling would likely not exceed 2.7 degrees Fahrenheit, challenging previous estimates ranging from 3.6 to 14 degrees Fahrenheit. The study focused on the influence of microscopic sulfur particles injected into the atmosphere and their impact on temperature changes. The findings raise questions about the potential for geoengineering to combat global warming and highlight the need for further research on volcanic aerosol particle sizes.

via NASA|

#aerosol-particles #climate-modeling #global-cooling