Results 171 to 180 of about 1,324,260 (297)

Integrating SfM, LiDAR and TLS for High‐Resolution Monitoring of Palsa Surface Changes and Degradation Dynamics

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Understanding fine‐scale surface changes is crucial for quantifying ecosystem dynamics and detecting landscape changes. Palsas, comparably small peatland elevations with an ice‐rich permafrost core, undergo natural cycles of growth and degradation. They can also serve as indicators of climate change in subarctic regions. Because they typically
Alexander Störmer, Timo Kumpula, Pasi Korpelainen, Benjamin Burkhard   +3 more
wiley   +1 more source

Unusual lake ice phenomena observed in Lake Inawashiro, Japan: spray ice and ice balls [PDF]

Journal of Glaciology, 2009
Toshiyuki Kawamura, Toshihiro Ozeki, Hiroyuki Wakabayashi, Minoru Koarai   +3 more
openaire   +1 more source

Electrical Resistivity Tomography for the 2D and 3D Investigation of Pingos and Permafrost Mounds in Northern Canada's Mountain and Coastland Areas

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Pingos and related permafrost mounds are widespread periglacial landforms in Arctic environments that are ice‐rich on the one hand and contain taliks on the other, making them vulnerable to climate change. So far, the interior, geophysical characteristics, and distribution of ground ice within these dome‐ or cone‐shaped features have not been ...
Tim Wiegand, Julius Kunz, Christof Kneisel   +2 more
wiley   +1 more source

Impacts of climate and reduced ice cover on trophic structure and community dynamics in a high latitude lake. [PDF]

Oecologia
Pilotto F, Myrvold KM, Saksgård R, Eikland KA, Skjelbred B, Larsen S, Halvorsen G, Hesthagen T, Jensen TC.   +8 more
europepmc   +1 more source

Evolution of photoperiod insensitivity drove the westward expansion of broomcorn millet

PLANTS, PEOPLE, PLANET, EarlyView.
This research highlights how ancient farming communities adapted crops to challenging environments, enabling the spread of agriculture across Eurasia. By demonstrating that broomcorn millet evolved reduced sensitivity to day‐length, the study explains how this crop could support food production in regions with short growing seasons and long summer days.
Giedre Motuzaite Matuzeviciute, Michael Kempf, Margaux L. C. Depaermentier, Harriet Hunt, Kristina Jaskune   +4 more
wiley   +1 more source

Rapid acceleration of ice-cover loss from Northern Hemisphere lakes above critical air temperature thresholds. [PDF]

Proc Natl Acad Sci U S A
Zhou J, Wang W, Ma Y, Yuan L, Huang C, Shi K, Leavitt PR.   +6 more
europepmc   +1 more source

Evaluation of a stochastically perturbed parametrisations scheme for sea ice in sub‐seasonal forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Overconfident sea ice forecasts pose a challenge in subseasonal prediction. To test a potential way to address this issue and account for sea ice model uncertainty, this article investigates a stochastically perturbed parametrisations (SPP) scheme for sea ice in a prototype CY49R2 configuration of the coupled IFS‐NEMO4‐SI3 system. The results show that
Jonas Spaeth, Steffen Tietsche, Kristian Strommen, Michael Mayer, Andrea Storto, Christopher D. Roberts, Sarah‐Jane Lock, Sarah Keeley   +7 more
wiley   +1 more source

Unraveling daily dynamics of supraglacial lakes in response to hydrological pulses and anomalous climate signals. [PDF]

Nat Commun
Song J, Qiu H, Emmer A, Zhang G, Wang N, Liu Y, Yang G, Liang Y.   +7 more
europepmc   +1 more source

Revisiting bare‐ground evaporation in a high‐resolution numerical weather prediction system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
An improved method is proposed to parameterize evaporation in numerical weather prediction models. The figure shows dew‐point temperature forecast error (standard deviation of forecast error and bias) versus lead time over the North Plains region during spring 2022 for three parameterizations: CTL, the α$$ \alpha $$ method of Jacquemin and Noilhan; IFS:
Vincent Fortin, Marc Verville, Vincent Vionnet, Marco Carrera, Dorothée Charpentier   +4 more
wiley   +1 more source

Spectral Characteristics of Dissolved Organic Matter and Their Associations with Heavy Metal Distribution in Multi-Media of a Typical Frozen Eutrophic Lake. [PDF]

Toxics
Lv Z, Yu X, Feng W, Qiao Y, Ho CM, Gao J, Song F, Yang W, Kalaipandian S.   +8 more
europepmc   +1 more source