scholarly journals Can Regulation of Freshwater Runoff in Hudson Bay Affect the Climate of the North Atlantic?

ARCTIC ◽  
1996 ◽  
Vol 49 (4) ◽  
Author(s):  
Paul H. LeBlond ◽  
John R. Lazier ◽  
Andrew J. Weaver
Keyword(s):  
North Atlantic ◽  
Hudson Bay ◽  
Freshwater Runoff ◽  
The North ◽  
The North Atlantic

scholarly journals Sensitivity of a Two-Layer Model Atmosphere to Changes in Ice-Sheet Topography

1997 ◽  
Vol 25 ◽  
pp. 246-249 ◽  
Author(s):  
Charles S. Jackson
Keyword(s):  
North Atlantic ◽  
Ice Sheet ◽  
Model Atmosphere ◽  
Hudson Bay ◽  
Surprising Result ◽  
Layer Model ◽  
The North ◽  
Two Layer Model ◽  
The North Atlantic ◽  
Ice Sheet Topography

Results are presented testing the sensitivity of a two-layer model to changes in the Laurentide ice sheet’s geometry following the collapse of the Hudson Bay ice dome. Since the ice sheet is thought to induce cooling over the North Atlantic through its mechanical effect on atmospheric circulation, the model shows a surprising result in that the removal of the Hudson Bay ice dome led to a further cooling of 4°C over the North Atlantic. This finding suggests that fluctuations in ice-sheet topography could have contributed to the climate variability witnessed in the geologic record. Further study is needed to understand the mechanism behind these results.

Whale milk. I. Fin whale (Balaenoptera physalus) and beluga whale (Delphinapterus leucas) milk: gross composition and fatty acid constitution

1969 ◽  
Vol 47 (1) ◽  
pp. 95-97 ◽  
Author(s):  
B. H. Lauer ◽  
B. E. Baker
Keyword(s):  
Fatty Acid ◽  
North Atlantic ◽  
Beluga Whale ◽  
Delphinapterus Leucas ◽  
Hudson Bay ◽  
Balaenoptera Physalus ◽  
Fin Whale ◽  
The North ◽  
The North Atlantic ◽  
Beluga Whale Delphinapterus Leucas

Milk was obtained from a fin whale which was killed in the North Atlantic and from a beluga whale which was killed in Hudson Bay. The gross composition and fatty acid constitution of the milks were determined.

scholarly journals Orbital modulation of millennial-scale climate variability in an earth system model of intermediate complexity

2009 ◽  
Vol 5 (4) ◽  
pp. 2019-2051 ◽  
Author(s):  
T. Friedrich ◽  
A. Timmermann ◽  
O. Timm ◽  
A. Mouchet ◽  
D. M. Roche
Keyword(s):  
North Atlantic ◽  
Earth System Model ◽  
System Model ◽  
Hudson Bay ◽  
Earth System ◽  
Overturning Circulation ◽  
Intermediate Complexity ◽  
The North ◽  
The North Atlantic ◽  
Millennial Scale

Abstract. The effect of orbital variations on simulated millennial-scale variability of the Atlantic Meridional Overturning Circulation (AMOC) is studied using the earth system model of intermediate complexity LOVECLIM. It is found that for present-day topographic boundary conditions low obliquity values (~22.1°) favor the triggering of internally generated millennial-scale variability in the North Atlantic region. Reducing the obliquity leads to changes of the pause-pulse ratio of the corresponding AMOC oscillations. Stochastic excitations of the density-driven overturning circulation in the Nordic Seas can create regional sea-ice anomalies and a subsequent reorganization of the atmospheric circulation. The resulting remote atmospheric anomalies over the Hudson Bay can release freshwater pulses into the Labrador Sea leading to a subsequent reduction of convective activity. The millennial-scale AMOC oscillations disappear if LGM bathymetry (with closed Hudson Bay) is prescribed. Furthermore, our study documents the marine and terrestrial carbon cycle response to millennial-scale AMOC variability. Our model results support the notion that stadial regimes in the North Atlantic are accompanied by relatively high levels of oxygen in thermocline and intermediate waters off California – in agreement with paleo-proxy data.

scholarly journals Sensitivity of a two-layer model atmosphere to changes in ice-sheet topography

1997 ◽  
Vol 25 ◽  
pp. 246-249 ◽  
Author(s):  
Charles S. Jackson
Keyword(s):  
North Atlantic ◽  
Ice Sheet ◽  
Model Atmosphere ◽  
Hudson Bay ◽  
Surprising Result ◽  
Layer Model ◽  
The North ◽  
Two Layer Model ◽  
The North Atlantic ◽  
Ice Sheet Topography

Results are presented testing the sensitivity of a two-layer model to changes in the Laurentide ice sheet’s geometry following the collapse of the Hudson Bay ice dome. Since the ice sheet is thought to induce cooling over the North Atlantic through its mechanical effect on atmospheric circulation, the model shows a surprising result in that the removal of the Hudson Bay ice dome led to a further cooling of 4°C over the North Atlantic. This finding suggests that fluctuations in ice-sheet topography could have contributed to the climate variability witnessed in the geologic record. Further study is needed to understand the mechanism behind these results.

The Currents of the North Atlantic

1892 ◽  
Vol 34 (872supp) ◽  
pp. 13940-13941
Author(s):  
Richard Beynon
Keyword(s):  
North Atlantic ◽  
The North ◽  
The North Atlantic

NATO adaptation to current challenges and mechanisms of Ukraine’s cooperation with the North Atlantic Treaty Organization

2019 ◽  
pp. 73-81
Author(s):  
Oleh Poshedin
Keyword(s):  
North Atlantic ◽  
Task Force ◽  
Response Force ◽  
Cyber Attack ◽  
Adaptation Measures ◽  
Joint Force ◽  
Security Environment ◽  
The North ◽  
The North Atlantic ◽  
Area Of Influence

The purpose of the article is to describe the changes NATO undergoing in response to the challenges of our time. Today NATO, as a key element of European and Euro-Atlantic security, is adapting to changes in the modern security environment by increasing its readiness and ability to respond to any threat. Adaptation measures include the components required to ensure that the Alliance can fully address the security challenges it might face. Responsiveness NATO Response Force enhanced by developing force packages that are able to move rapidly and respond to potential challenges and threats. As part of it, was established a Very High Readiness Joint Task Force, a new Allied joint force that deploy within a few days to respond to challenges that arise, particularly at the periphery of NATO’s territory. NATO emphasizes, that cyber defence is part of NATO’s core task of collective defence. A decision as to when a cyber attack would lead to the invocation of Article 5 would be taken by the North Atlantic Council on a case-by-case basis. Cooperation with NATO already contributes to the implementation of national security and defense in state policy. At the same time, taking into account that all decision-making in NATO based on consensus, Ukraine’s membership in the Alliance quite vague perspective. In such circumstances, in Ukraine you often can hear the idea of announcement of a neutral status. It is worth reminding that non-aligned status did not save Ukraine from Russian aggression. Neutral status will not accomplish it either. All talks about neutrality and the impossibility of Ukraine joining NATO are nothing but manipulations, as well as recognition of the Ukrainian territory as Russian Federation area of influence (this country seeks to sabotage the Euro-Atlantic movement of Ukraine). Think about it, Moldova’s Neutrality is enshrined in the country’s Constitution since 1994. However, this did not help Moldova to restore its territorial integrity and to force Russia to withdraw its troops and armaments from Transnistria.

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