Results 141 to 150 of about 116,681 (315)

Insight into Sources of Benzene, TCE, and PFOA/PFOS in Groundwater at Naval Air Station Whiting Field, Florida, through Numerical Particle-Tracking Simulations

open access: yesHydrology
Past waste-disposal activities at Naval Air Station Whiting Field (NASWF) have led to elevated concentrations of contaminants in the underlying sand and gravel aquifer.
Eric D. Swain   +3 more
doaj   +1 more source

Long‐Term Variability and Spatial Differentiation of the Frost‐Free Period in Iceland

open access: yesInternational Journal of Climatology, EarlyView.
Warming in Iceland (May–September) is expressed as fewer Tmin < 0°C days in the interior and more Tmin > 0°C days along the coasts. ABSTRACT Climate change in subarctic regions leads to significant transformations in thermal conditions; however, the long‐term variability of the frost‐free season (FFS)—and consequently, the growing period—remains poorly
Katarzyna Piotrowicz   +3 more
wiley   +1 more source

Hydrography and flow in the rift valley of the Mid-Atlantic Ridge

open access: yes, 2000
Slow-spreading mid-ocean ridges such as the Mid-Atlantic Ridge are characterized by deep axial rift valleys which are isolated from the water on the ridge flanks.
Thurnherr, Andreas M., Thurnherr, A.M.
core  

Characterisation of Drought and Wet Events in the Paraíba do Sul River Basin—Brazil

open access: yesInternational Journal of Climatology, EarlyView.
Trend analysis identified statistically significant reductions in precipitation (at the 5% significance level) at specific pluviometric stations in São Paulo and Rio de Janeiro, while other areas, mainly in Minas Gerais, experienced significant increases in annual and seasonal rainfall, particularly during summer and spring. These significant trends at
Gildo Rafael de Almeida Santana   +4 more
wiley   +1 more source

Bacterioplankton dynamics in surface waters of the north-eastern (sub-)tropical Atlantic Ocean affected by Aeolian dust [PDF]

open access: yes, 2010
The microbial community dominates biogeochemical cycling of the ocean, affecting global climate.The impact of physical disturbance of near surface microbial populations was studied in the northeasterntropical and subtropical Atlantic Ocean.
Hill, Polly Georgiana
core  

Tropicalization of the Temperate Zone: Spatiotemporal Variability of Winter Warming and Declining Freeze Days Across the United States

open access: yesInternational Journal of Climatology, EarlyView.
Unique characteristics of winter daily minimum (Tmin) and maximum (Tmax) temperatures and freeze days across the conterminous United States from 1952 to 2024 are examined. Results show spatial heterogeneity in Tmin/Tmax warming rates across the tropical‐temperate transition zone in the southeastern United States, and that the highest temperature on the
Vincent M. Brown   +4 more
wiley   +1 more source

Formation of the Atlantic Meridional Overturning Circulation lower limb is critically dependent on Atlantic-Arctic mixing

open access: yesNature Communications
Deep-water formation in the eastern Subpolar North Atlantic Ocean (eSPNA) and Nordic Seas is crucial for maintaining the lower limb of the Atlantic Meridional Overturning Circulation (AMOC), of consequence for global climate.
Dipanjan Dey   +6 more
doaj   +1 more source

Upper Ocean Transport Variability in the Subtropical North Atlantic [PDF]

open access: yes, 2010
Many general circulation models predict a reduction in overturning strength in the 21st century as a response to anthropogenic forcing, meaning that novel methods of monitoring individual components of the subtropical North Atlantic circulation are ...
Brearley, James Alexander
core  

Extreme Climate Events in Morocco: Historical Analysis and Future Projections Based on CMIP6 Simulations

open access: yesInternational Journal of Climatology, EarlyView.
Historical observations and bias‐corrected CMIP6 projections reveal intensifying warm extremes, declining cold events and increasingly irregular precipitation patterns across Morocco. Future warming, particularly under SSP5‐8.5, produces an almost linear amplification of heat, aridity and hydrological stress, leading to longer droughts and more intense
Oualid Hakam   +4 more
wiley   +1 more source

Antarctic link to deep flow speed variation during Marine Isotope Stage 3 in the western North Atlantic

open access: yes
The Western Boundary Undercurrent (WBUC), off eastern America, is an important component of the Atlantic Meridional Overturning circulation and is the principal route for southward transport of North Atlantic waters and southward return of Southern ...
Hoogakker, B. A. A.   +2 more
core  

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