Results 131 to 140 of about 34,348 (282)
Photosynthetic primary production in the Mesoproterozoic
New Phytologist, Volume 251, Issue 1, Page 64-80, July 2026.Summary The Mesoproterozoic atmosphere had more CO2 and less O2 than at present. While the upper ocean was oxygenated, the deeper ocean was euxinic or ferruginous. Primary production was performed by Chlorobia, Cyanobacteria, Proteobacteria, and Archaeplastida.
Patricia Sánchez‐Baracaldo +1 more
wiley +1 more source
Permafrost, Vol. 11, No. 1 (Fall-Winter 1988-89) [PDF]
, 1988 This issue of Permafrost was funded by grants from the Alaska State Council on the Arts, the Associated Students of the University of Alaska, Fairbanks, and Dave Sims/Running Dog Press.[Fiction] -- Three Stories by Three Writers Fiction Contest Winners -
Alaska Association for the Arts
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Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Arctic warming accelerates permafrost thaw and coastal erosion, increasing terrestrial material transport to the ocean. Using Moderate Resolution Imaging Spectroradiometer (MODIS) data (2002–2023), we report a widespread increase in the diffuse attenuation coefficient Kd(490) across Arctic shelves since 2018, notably in the Laptev and Kara ...
Xingyuan Zhu, Tao Li, Lee W. Cooper
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.Abstract Supra‐permafrost groundwater (SPGW) is a significant but understudied source of dissolved organic matter (DOM) to Arctic coastal systems. We applied ramped pyrolysis/oxidation (RPO) with Δ14C and δ13C isotopic analysis to assess DOM reactivity and origin in SPGW, river, and lagoon waters along the Alaska Beaufort Sea coast.
C. T. Connolly +2 more
wiley +1 more source
Permafrost, Vol. 06, No. 2 (Spring 1984)
, 1984 permafrost is supported in part by grants from the Alaska State Council on the Arts and The National Endowment for the Arts, a federal agency in Washington, D.C., and Walking Dog Press of Fairbanks, Alaska.What We Do For Art / Michael Bugeja -- The Dark ...
Alaska Association for the Arts
core
Permafrost conditions in the Mediterranean region since the Last Glaciation [PDF]
, 2018 Cold-climate geomorphological processes today in the Mediterranean region are only distributed in the highest mountain environments. However, climate condition prevailing during the Late Pleistocene and Holocene have conditioned significant spatio ...
Hughes P. +21 more
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Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.Abstract Near‐0°C (−2°C to +2°C) air temperatures are critical for determining the phase of precipitation, the onset of freeze–thaw cycles, and associated impacts on the environment and infrastructure. Change is expected in a warming climate, yet large‐scale high‐resolution understanding of near‐0°C transitions remains limited, particularly under ...
Sujan Basnet, Julie M. Thériault
wiley +1 more source
Changing Flood‐Generating Mechanisms Impact Flood Characteristics in Snow‐Dominated Catchments
Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.Abstract Global warming is shifting the characteristics of snowmelt floods, while simultaneously altering flood‐generating mechanisms in cold regions. Here, we disentangle the contributions of inter‐type mechanism transitions from intra‐type characteristic shifts to overall changes in flood behavior across Northern Hemisphere snow‐dominated catchments.
Xinli Bai +7 more
wiley +1 more source
Scientific DataRetrogressive Thaw Slumps (RTS) are widespread mass-wasting hillslope failures triggered by thawing permafrost. While regional studies have provided insights into the spatial distribution and dynamics of RTS, a consistent and unbiased quantification and ...
Ingmar Nitze +9 more
doaj +1 more source