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Climate Models

All articles tagged with #climate models

Poleward North Pacific Storm Shift Outpaces Climate Models
science17 hours ago

Poleward North Pacific Storm Shift Outpaces Climate Models

New analysis using decades of sea-level pressure data shows North Pacific winter storm tracks are migrating north toward the Arctic faster than climate models project, a shift linked to climate change that coincides with Alaska’s glacier ice loss (~60 billion tons per year) and hotter, drier conditions across California and Nevada. The study suggests models may understate the risks of storm-track changes, implying Western North America could face more dramatic impacts than current projections indicate.

via SciTechDaily|
#climate-change#climate-models#north-pacific
Earth Could Host Life For 1.8 Billion More Years Amid Sun's Brightening, Study Says
science8 days ago

Earth Could Host Life For 1.8 Billion More Years Amid Sun's Brightening, Study Says

A study using 29 climate models suggests Earth's vegetative biosphere could persist about 1.8 billion years longer as the Sun brightens, delaying ocean loss and food-web collapse. The work highlights plant strategies that tolerate warming and lower CO2, implying the biosphere could adapt to future conditions, though exact evolutionary outcomes remain uncertain.

via Yahoo|
#biosphere#climate-models#life-on-earth
Earth’s life could endure 1.8 billion more years as the sun brightens
science9 days ago

Earth’s life could endure 1.8 billion more years as the sun brightens

A new study in Journal of Geophysical Research Atmospheres, using 29 climate models, suggests Earth’s vegetative biosphere could persist for about 1.8 billion years as the Sun brightens and oceans are lost, extending far beyond earlier estimates. The researchers account for varying CO2 levels and plant types (including CAM plants like succulents and orchids) and emphasize that this is a broad projection; evolutionary adaptations could further extend or shorten life’s persistence. The work refines understanding of biosphere longevity and has implications for studying habitability on other worlds.

via Live Science|
#biosphere#climate-models#earth
Venus once hosted oceans? New clues point to a watery past and a volcanic turn to a runaway greenhouse
science23 days ago

Venus once hosted oceans? New clues point to a watery past and a volcanic turn to a runaway greenhouse

Some climate models suggest Venus could have harbored liquid water and temperate conditions for up to about two billion years, aided by slow rotation that encouraged cloud cover; later widespread volcanic resurfacing may have vented CO2 and triggered a runaway greenhouse, leaving Venus far hotter than today. The evidence is debated—cloud behavior on a young Venus and the deuterium-to-hydrogen ratio offer clues but no consensus. Next-generation missions (NASA’s DAVINCI and VERITAS, and ESA’s EnVision) aim to study the atmosphere, surface, and history to help settle whether Venus ever had oceans or was always hot.

via Space Daily|
#climate-models#habitable-venus#science
Hidden Channels Under Antarctic Ice Shelves Trap Warm Water, Accelerating Melt
science1 month ago

Hidden Channels Under Antarctic Ice Shelves Trap Warm Water, Accelerating Melt

A Nature Communications study shows long grooves beneath the Fimbulisen Ice Shelf trap warmer seawater, intensifying local melting and potentially weakening the ice shelf. Even modest inflows of warm water can dramatically increase melt where channels exist, a process not well captured by many climate models, suggesting East Antarctica may be more vulnerable than previously thought.

via The Daily Galaxy|
#antarctica#climate-models#ice-shelf
Soil Fungus Produces Cell-Free Ice-Nucleating Proteins, Paving Way for Weather Control
science3 months ago

Soil Fungus Produces Cell-Free Ice-Nucleating Proteins, Paving Way for Weather Control

An international team found common soil fungi secrete stable, water-soluble proteins that can nucleate ice at around -2°C, acting as cell-free ice makers. This could provide a natural, non-toxic alternative for cloud seeding, enable improved frozen-food and medical preservation, and help climate models by better accounting for ice formation in clouds.

via ZME Science|
#climate-models#cloud-seeding#fungi
Ancient horsetail reveals water with space-like isotopes, challenging climate records
science3 months ago

Ancient horsetail reveals water with space-like isotopes, challenging climate records

Water drawn through the hollow stem of a living Equisetum horsetail shows the most extreme oxygen‑isotope signature ever measured in terrestrial material, with heavy oxygen concentrating from base to tip as moisture evaporates. The finding prompts a rethink of how evaporation reshapes plant-water signals, fossil phytolith readings, and past humidity, influencing how scientists reconstruct ancient climates.

via Earth.com|
#climate-models#evaporation#horsetail
Desert Dust Triggers Ice in Northern Clouds, Hinting at Climate Model Refinements
science4 months ago

Desert Dust Triggers Ice in Northern Clouds, Hinting at Climate Model Refinements

A 35-year satellite study finds mineral dust from deserts seeds ice formation in cloud tops across the Northern Hemisphere, increasing ice in mixed-phase clouds and altering both sunlight reflection and precipitation. This link between desert dust and cloud freezing could help refine climate projections, though regional variability exists and further research is needed on factors like updraft strength and humidity.

via SciTechDaily|
#climate-models#cloud-microphysics#dust-aerosols
Hidden Ocean Fronts Drive Surprising Carbon Uptake
science5 months ago

Hidden Ocean Fronts Drive Surprising Carbon Uptake

Two decades of satellite data show that narrow ocean fronts—where water masses meet—are hotspots for carbon capture due to vertical mixing and phytoplankton blooms. These small zones disproportionately absorb CO₂, suggesting climate models may underestimate ocean carbon storage if they ignore front dynamics; incorporating them could improve predictions of the carbon cycle.

via The Daily Galaxy|
#carbon-uptake#climate-models#ocean-fronts
Early Climate Models Predicted Our Current Climate Realities
science9 months ago

Early Climate Models Predicted Our Current Climate Realities

Early climate models, particularly those developed by Syukuro Manabe, accurately predicted key aspects of modern climate change, including global warming from CO2, stratospheric cooling, Arctic amplification, land-ocean contrast, and delayed Southern Ocean warming, demonstrating their significant predictive success despite their complexity and limitations.

via Space|
#arctic-amplification#climate-models#early-predictions
Early Climate Models Accurately Predicted Current Sea-Level Rise
science10 months ago

Early Climate Models Accurately Predicted Current Sea-Level Rise

Early climate models, particularly those developed by Syukuro Manabe in the 1960s, accurately predicted key features of modern climate change, including global warming from CO2, stratospheric cooling, Arctic amplification, land-ocean contrast, and delayed Southern Ocean warming, demonstrating the reliability of climate modeling despite its complexities and limitations.

via The Conversation|
#climate-models#climate-predictions#climate-science-history