Results 21 to 30 of about 519,289 (290)

Pan-Antarctic analysis aggregating spatial estimates of Adélie penguin abundance reveals robust dynamics despite stochastic noise

open access: yesNature Communications, 2017
Adélie penguins are a key Antarctic indicator species, but data patchiness has challenged efforts to link population dynamics to key drivers. Che-Castaldo et al. resolve this issue using a pan-Antarctic Bayesian model to infer missing data, and show that
Christian Che-Castaldo   +10 more
doaj   +1 more source

The dust storm and its interaction with atmospheric waves on Mars

open access: yes地球与行星物理论评, 2021
Mars shares many similarities with Earth. The comparative study of the climate between the two planets is of great significance to understand the evolution of the Earth's atmosphere.
Zhaopeng Wu, Jing Li, Tao Li, Jun Cui
doaj   +1 more source

Evolution of a Water-rich Atmosphere Formed by a Giant Impact on an Earth-sized Planet

open access: yesThe Astrophysical Journal, 2023
The atmosphere of a terrestrial planet that is replenished with secondary gases should have accumulated hydrogen-rich gas from its protoplanetary disk.
Kenji Kurosaki   +3 more
doaj   +1 more source

Research progress on the exosphere and its variability of terrestrial bodies

open access: yes地球与行星物理论评
Exosphere is an essential component of the atmospheres of terrestrial bodies. Its structure and variability hold significant scientific values for understanding planetary material loss, atmospheric evolution, and habitability.
Wenlong Li   +5 more
doaj   +1 more source

Upper atmospheres and ionospheres of planets and satellites

open access: yes, 2017
The upper atmospheres of the planets and their satellites are more directly exposed to sunlight and solar wind particles than the surface or the deeper atmospheric layers.
A Bhardwaj   +109 more
core   +1 more source

On the Role of Dissolved Gases in the Atmosphere Retention of Low-Mass Low-Density Planets [PDF]

open access: yes, 2018
Low-mass low-density planets discovered by Kepler in the super-Earth mass regime typically have large radii for their inferred masses, implying the presence of H$_2$-He atmospheres.
Chachan, Yayaati, Stevenson, David J.
core   +3 more sources

Deuterium Escape on Photoevaporating Sub-Neptunes

open access: yesThe Astrophysical Journal Letters, 2023
We investigate the evolution of the deuterium-to-hydrogen (D/H) mass ratio driven by EUV photoevaporation of hydrogen-rich atmospheres of close-in sub-Neptunes around solar-type stars.
Pin-Gao Gu, Howard Chen
doaj   +1 more source

Evolution of the Earth's Atmosphere [PDF]

open access: yesScience, 1967
We living things are a late outgrowth of the metabolism of our Galaxy. The carbon that enters so importantly into our composition was cooked in the remote past in a dying star. From it at lower temperatures nitrogen and oxygen were formed. These, our indispensable elements, were spewed out into space in the exhalations of red giants and such stellar ...
openaire   +2 more sources

Chemical ageing and transformation of diffusivity in semi-solid multi-component organic aerosol particles [PDF]

open access: yes, 2011
Recent experimental evidence underlines the importance of reduced diffusivity in amorphous semi-solid or glassy atmospheric aerosols. This paper investigates the impact of diffusivity on the ageing of multi-component reactive organic particles ...
Pfrang, Christian   +2 more
core   +3 more sources

Concentrations and isotope ratios of helium and other noble gases in the Earth's atmosphere during 1978-2011

open access: yes, 2012
The evolution of the atmospheric noble gas composition during the past few decades has hardly been studied because, in contrast to many other atmospheric gases, systematic time-series measurements have not been available.
Colin Maden   +7 more
core   +1 more source

Home - About - Disclaimer - Privacy