climate Archives

Astrogeology, Atmospheres, Climate, Weather, Habitable Zones, Mars, Press Release, Water/Hycean Worlds & Oceanography

How Earth’s Interactions With Mars Drive Earth’s Deep-sea Circulation

by Keith CowingMarch 13, 2024March 13, 2024

Scientists from the Universities of Sydney and Sorbonne University have used the geological record of the deep sea to discover a connection between the orbits of Earth and Mars, past […]

Making a digital Twin of Earth -- Astrobiology.com

AI - Data - Apps - Cybernetics, Astrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Press Release, Water/Hycean Worlds & Oceanography

Creating A Digital Twin Of A Planet’s Weather: Earth

by Keith CowingMarch 6, 2024March 6, 2024

New ‘digital twin’ Earth technology could help predict water-based natural disasters before they strike

CO2 transit spectra for aquaplanets from Group C with varying pN2 (purple), Group A (black), and Group B with 0.1 bar CO2. Although the Group B simulation has two orders of magnitude more CO2, its transit amplitude is smaller than those of the Group C simulations due to the geometries of the systems. However, note that our GCM simulations only include a troposphere; if CO2 is well-mixed on a real planet, spectral features could extend much higher. -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Proxima Centauri, Status Report

Water Vapour Transit Ambiguities for Habitable M-Earths

by Keith CowingFebruary 21, 2024February 20, 2024

We have shown in a recent study, using 3D climate simulations, that dayside land cover has a substantial impact on the climate of a synchronously rotating temperate rocky planet such […]

Four model scenarios employed in our study. Model (A) closely resembles models presented in refs.18,19 and other commonly used exoplanet interior models follow model (A) where silicate melts are neglected. Model (D) aligns closely with our current understanding of mineral physics and exoplanet interiors and is, therefore, the most accurate representation based on our existing knowledge. -- astro-ph.EP

Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Status Report, Water/Hycean Worlds & Oceanography

Majority Of Water Hides Deep In The Interiors Of Exoplanets

by Keith CowingJanuary 30, 2024January 30, 2024

Water is an important component of exoplanets, with its distribution, i.e., whether at the surface or deep inside, fundamentally influencing the planetary properties.

The illustration depicts ocean surface currents simulated by MPAS-Ocean. Credit: Los Alamos National Laboratory, E3SM, U.S. Dept. of Energy

AI - Data - Apps - Cybernetics, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Mapping, Geodesy, Cartography, Bathymetry, Press Release, Water/Hycean Worlds & Oceanography

Modeling Ocean Dynamics On Earth: Applications For Understanding Other Water Worlds

by Keith CowingJanuary 30, 2024January 30, 2024

Editor’s note: one of the things we are looking for as we examine the icy water worlds in our own solar system and exoplanets circling other stars are oceans. Earth […]

Exploring the Permian sediment of Oklahoma’s Anadarko Basin - University of Oklahoma

Atmospheres, Climate, Weather, Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Fossils & Paleontology, Press Release

Deep Dust Project Works To Unravel Earth’s Distant Climate Past In Oklahoma’s Anadarko Basin

by Keith CowingJanuary 10, 2024January 10, 2024

A team of researchers at the University of Oklahoma will explore the Permian sediment of Oklahoma’s Anadarko Basin, which contains dust deposits from Earth’s deep-time past. The Anadarko Basin includes […]

The structure of the model. Every ReLU activation is preceded by a Batch Normalisation, to normalise the inputs to the activation and improve learning [1]. -- astro-ph.EP

Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Mars, Status Report

Surveying The Ice Condensation Period At Southern Polar Mars Using A CNN

by Keith CowingDecember 27, 2023December 27, 2023

Before the seasonal polar ice cap starts to expand towards lower latitudes on Mars, small frost patches may condensate out during the cold night and they may remain on the […]

This illustration by Benjamin Storer shows oceanic weather systems (mesoscale eddies) from data overlaid with atmospherically driven climate-scale currents (black lines), which can be extracted with a coarse graining technique developed in the lab of Hussein Aluie. The image reveals how these ocean weather systems are energized (red) or weakened (blue) when interacting with climate-scales, which follows a pattern mirroring the global atmospheric circulation. CREDIT University of Rochester / Benjamin Storer

Atmospheres, Climate, Weather, Gaia - Planetary Perspectives, Habitable Zones, Press Release, Water/Hycean Worlds & Oceanography

The Link Between Our Planet’s Ocean Weather And Global Climate

by Keith CowingDecember 22, 2023December 22, 2023

An international team of scientists has found the first direct evidence linking seemingly random weather systems in the ocean with climate on a global scale.

The power spectra of the uniform weighting map shown in the central row of Figure 3. The shaded regions around the evolved Earth spectra represent the 1σ ranges of a set of 100 randomized simulations. The dashed lines highlight that, under the constraints of this model and its assumptions, the transformation of the surface consists of two essentially distinct steps: the smoothing of the continent/ocean bimodality via diffusion (shown by the red dashed lines), and the subsequent build-up of surface features through volcanic outflows (in green). This result implies that, while our model nominally assumes a constant surface diffusion rate and a fixed period of volcanism, the results will be virtually identical for equal values of the total diffusion (parametrized by ∆ in Table 1) and total volcanic outflow mass. -- astro-ph.EP

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Gaia - Planetary Perspectives, Press Release, Terraforming & Geoengineering, Venus

Turning Earth Into Venus: A Stochastic Model of Possible Evolutions of Terrestrial Topography

by Keith CowingDecember 12, 2023December 12, 2023

Venus may have had both an Earth-like climate as well as extensive water oceans and active (or incipient) plate tectonics for an extended interval of its history. The topographical power […]

Comparable monthly insolation patterns for Cases 1–4 at given snapshots in their eccentricity evolution. We do not include snapshots of the higher eccentricity values attained in Case 4. Insolation bar in the lower right goes from zero to 341 W m−2 . Note that we plot Case 4 in the first column and Cases 1–3 in columns 2–4 to make comparisons between Cases 4 and 1 easier. -- astro-ph.EP

Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Gravitational Biology, Status Report

Exploring Climate With Obliquity In A Variable-eccentricity Earth-like World

by Keith CowingNovember 8, 2023

Exploring planetary systems similar to our solar system can provide a means to explore a large range of possibly temperate climates on Earth-like worlds.