Results 151 to 160 of about 5,052 (252)

Tropical Pacific Variability Drives Quasi‐Decadal Sea Ice Fluctuations Off East Greenland

open access: yesGeophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The sea ice off East Greenland exhibits pronounced quasi‐decadal fluctuations superimposed on its long‐term decline. Here we show that this low‐frequency variability is tightly phase‐coherent with tropical Pacific quasi‐decadal variability (TPQD), revealing a teleconnection from the tropics to the Arctic.
Rongrong Xu   +5 more
wiley   +1 more source

Historical Volcanic Eruptions Mitigated the Expected Rapid Arctic Sea Ice Decline Prior to 2000

open access: yesGeophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Arctic sea ice has declined at sharply contrasting rates over the past four decades—modest before 2000 and rapid thereafter. Using observational and model evidence, we show that large tropical volcanic eruptions can trigger decade‐long Arctic sea ice recoveries, and that without the 1982 El Chichón and 1991 Pinatubo eruptions, Arctic sea ice ...
Xinyue Wang   +3 more
wiley   +1 more source

Three‐Year Characterization of Boundary Layer Dynamics From GNSS Zenith Wet Delay Spectral Analysis

open access: yesAtmospheric Science Letters, Volume 27, Issue 6, June 2026.
Three years of GNSS zenith wet delay observations at Payerne reveal that spectral parameters—cutoff frequency α and variance σ2—capture robust seasonal cycles in boundary layer turbulence (R2 = 0.54 for α). Their inverse coupling tightens to r = −0.82 under summer convection, encoding regime‐dependent physics.
Gaël Kermarrec   +2 more
wiley   +1 more source

Possible Mechanism for the Record‐Breaking Cold Event Over Northeastern China in December 2023: Role of Extreme Negative North Atlantic Oscillation

open access: yesAtmospheric Science Letters, Volume 27, Issue 6, June 2026.
In early winter of 2023, an extreme negative North Atlantic Oscillation (NAO) event occurs. Subsequently, the NAO‐related Barents–Kara Seas high drives cold air southward into Siberia, enhancing the Siberian High. Upper‐level convergence and subsidence further contribute to its intensification, leading to the development of the historically strongest ...
Yi Yuan   +4 more
wiley   +1 more source

Interdecadal Change in Summer Extreme Rainfall Over North China Around the Early 2000s: Drivers and Mechanisms

open access: yesAtmospheric Science Letters, Volume 27, Issue 6, June 2026.
A discernible interdecadal change in extreme rainfall happened around the early 2000s, transitioning to a wetter period characterized by increased mean values and accelerated trends. The increased extremes were led by a poleward‐shifted East Asian westerly jet (lifting) and a strengthened and extended subtropical high (moisture transport), with little ...
Shiya Deng   +3 more
wiley   +1 more source

Facilitative Effects of Alnus viridis ssp. fruticosa on Betula nana ssp. exilis Growth in Arctic Alaska

open access: yesEcology and Evolution, Volume 16, Issue 6, June 2026.
We investigated how Siberian alder influences the growth of dwarf birch in the low Alaskan Arctic. Using growth rings, we found that Siberian alder promotes dwarf birch growth overall despite delaying and shortening the growing season through enhancing snow depths.
Jackson W. Drew   +3 more
wiley   +1 more source

From Inventories to Insights: Environmental Gradients Structuring Macro‐Moths Assemblages Recorded in Nature Reserves

open access: yesEcology and Evolution, Volume 16, Issue 6, June 2026.
The article analyses macro‐moth (Lepidoptera) inventory data from 292 nature reserves across the Czech Republic, comprising 941 species. It examines how reserve characteristics, geographic position and altitude influence species richness, community composition and their associations with species traits.
Zuzana Kubincová   +7 more
wiley   +1 more source

Warming summers limit reindeer grazing, weakening herbivory pressure in the mountain tundra

open access: yesEcography, Volume 2026, Issue 6, June 2026.
Climate change is predicted to alter species interactions by exposing ecosystems to increasingly frequent and intense warm spells. In the mountain tundra, grazing by large herbivores, particularly reindeer, can limit shrub expansion and preserve Arctic plant diversity.
Marianne Stoessel   +2 more
wiley   +1 more source

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