The variability of North Atlantic tropical storm and hurricane tracks, and its relationship to climate variability, is explored. Tracks from the North Atlantic hurricane database for the period 1950–2007 are objectively separated into four groups using a cluster technique that has been previously applied to tropical cyclones in other ocean basins. The four clusters form zonal and meridional sep...

Two common indicators of Atlantic climate variability, viz., the North Atlantic oscillation (NAO) and the crossintertropical convergence zone (ITCZ) sea surface temperature (SST) gradient, are examined for their frequency characteristics and midlatitude-tropical links. SST anomalies north and south of the ITCZ are found to be uncorrelated on all time scales, while the sea level pressure (SLP) f...

Hexachlorocyclohexanes (HCHs) were determined simultaneously in air and seawater during two cruises across the Atlantic Ocean between the Arctic Ocean (Ny-Alesund/ Svalbard, 79 degrees N; 12 degrees E) and the Antarctic Continent (Neumayer Station/ Ekstroem Ice Shelf, 70 degrees S; 8.2 degrees W) in 1999/ 2000. The concentrations of alpha-HCH and gamma-HCH in air and surface waters of the Arcti...

During the twentieth century sea surface temperatures in the Atlantic Ocean exhibited prominent multidecadal variations. The source of such variations has yet to be rigorously established—but the question of their impact on climate can be investigated. Here we report on a set of multimodel experiments to examine the impact of patterns of warming in the North Atlantic, and cooling in the South A...

16 17 The North Atlantic is the most important sink for atmospheric CO2 although there still 18 remain uncertainties about the total amount stored by this region and the contribution of 19 the anthropogenic CO2 (CANT) that is exchanged between the Mediterranean Sea and the 20 Atlantic Ocean. During the P3A2 cruise performed in October 2008 throughout the 21 oceanic area covered by the Gulf of C...

The major tracer activity of the last four years was the completion in 1983 of a survey of the North and Tropical Atlantic begun in 1981 as part of the Transient Tracers in the Ocean (TTO) project (Brewer, et al., 1985). An early set of papers (Brewer et al., 1983, and Swift, 1984) discussed evidence from these observations for the freshening of the North Atlantic due to cessation of overflow a...

Loen, NORWAY, 7-11 May, 2001 The original version of this material will be published by the Research and Technology Organization, North Atlantic Treaty Organization (RTO/NATO) in Meeting Proceedings, MP-069 "Advanced Flow Management, Part A Vortex Flow and High Angle of Attack", in the Spring 2002. For permission to copy or republish, contact the NATO/RTO Research and Technology Agency, BP 25 7...

We review the role of ocean-atmosphere interactions over the Atlantic sector in North Atlantic Oscillation (NAO) variability. The emphasis is on physical mechanisms, which are illustrated in simple models and analyzed in observations and numerical models. Some directions of research are proposed to better assess the relevance of Atlantic air-sea interactions to observed and simulated NAO variab...

Citation: Clarke JS, Humphreys MP, Tynan E, Kitidis V, Brown I, Mowlem M and Achterberg EP (2017) Characterization of a Time-Domain Dual Lifetime Referencing pCO2 Optode and Deployment as a High-Resolution Underway Sensor across the High Latitude North Atlantic Ocean. Front. Mar. Sci. 4:396. doi: 10.3389/fmars.2017.00396 Characterization of a Time-Domain Dual Lifetime Referencing pCO2 Optode an...

Evidence is presented that North Atlantic climate change since 1950 is linked to a progressive warming of tropical sea surface temperatures, especially over the Indian and Pacific Oceans. The ocean changes alter the pattern and magnitude of tropical rainfall and atmospheric heating, the atmospheric response to which includes the spatial structure of the North Atlantic Oscillation (NAO). The slo...