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permafrost

A house built on permafrost, now thawing, tilts dramatically.
Posted inNews

Mapping the People, Places, and Problems of Permafrost Thaw

by J. Besl 21 April 20212 September 2022

By combining demography data with permafrost maps, researchers provide a first count of the population on permafrost and predict its imminent decline.

A patch of grass in the middle of rocks
Posted inNews

Vicuña Poop Nourishes “Dung Gardens” High in the Andes

Katherine Kornei, Science Writer by Katherine Kornei 18 March 20214 October 2021

The excrement delivers nutrients like phosphorus and nitrogen, kick-starting islands of vegetation at the edge of the cryosphere.

Observed median July temperatures in eleven headwater streams by the Agashashok, Cutler, and Imelyak rivers in the Noatak river basin.
Posted inEditors' Highlights

Thawing Permafrost May Cause Streams to Cool

by D. Moore 3 March 20213 March 2023

Permafrost thawing associated with climate warming increases contributions to streamflow by deeper, cooler groundwater flow paths, which may result in lower summer stream temperatures.

Permafrost below grass
Posted inNews

Experimentos Revelan Cómo el Carbono del Permafrost se Convierte en Dióxido de Carbono

Katherine Kornei, Science Writer by Katherine Kornei 24 December 20206 September 2022

Muestras de campo provenientes de Alaska muestran cómo la luz solar y el hierro convierten el carbono del permafrost en dióxido de carbono. Los modelos climáticos ignoran este proceso.

A rocky landscape with short vegetation in the Canadian tundra
Posted inResearch Spotlights

¿Cómo Afecta el Reverdecimiento del Ártico al Agua Subterránea?

Kate Wheeling, freelance science writer by Kate Wheeling 13 November 20206 February 2023

Nuevas investigaciones examinan cómo los cambios en la ecología de la superficie influyen en la hidrología subterránea en el Ártico.

Frost covers branches on trees lining a field in Oulu, Finland.
Posted inResearch Spotlights

Predicting the Next Big Frost Quake

by J. Pinson 30 October 202016 February 2022

Frost quakes occur in boreal regions when rapidly expanding ice underground causes frozen soils to fracture. A recent frost quake in Finland has given scientists a rare look into how they form.

Burned shrubs, bare trees.
Posted inNews

Wildfires Trigger Long-Term Permafrost Thawing

Katherine Kornei, Science Writer by Katherine Kornei 31 August 202019 October 2022

Researchers used satellite data to trace ground subsidence in a permafrost-rich region in eastern Siberia following a wildfire.

Four plots showing production of greenhouse gases during laboratory incubations in organic soils and mineral soils, with and without nitrogen addition.
Posted inEditors' Highlights

Downhill from Here: Landscape Positions and Greenhouse Emissions

by W. M. Hammond 5 August 202011 August 2022

In comparing soils from two tundra wetland landscape positions, landscape position is found to matter, and toeslopes are associated with higher greenhouse gas production.

Permafrost below grass
Posted inNews

Experiments Reveal How Permafrost Carbon Becomes Carbon Dioxide

Katherine Kornei, Science Writer by Katherine Kornei 24 July 20206 September 2022

Field samples from Alaska show how sunlight and iron convert permafrost carbon to carbon dioxide. Climate models ignore this process.

Picture of collapsed corner of four-story apartment
Posted inNews

The Ticking Time Bomb of Arctic Permafrost

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 24 June 202015 November 2021

Arctic infrastructure is under threat from thawing permafrost.

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