Browsing Oceanography by Issue Date
Now showing items 81-100 of 152
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Assessment of the relationships between dominant cell size in natural phytoplankton communities and the spectral shape of the absorption coefficient
(2002-03)Size-fractionated chlorophyll concentration and phytoplankton absorption spectra were compared for a wide variety of natural communities. We found that, in general, when phytoplankton abundance increases, larger size-classes ... -
GCM experiments on changes in atmospheric predictability associated with the PNA pattern and tropical SST anomalies
(2002-08)Based on results from a simple three-level quasi-geostrophic model, Lin and Derome suggested that atmospheric predictability is influenced by the Pacific/North American (PNA) pattern. In the present study, predictability ... -
Evolution of orogenic wedges and continental plateaux: insights from crustal thermal-mechanical models overlying subducting mantle lithosphere
(2003-04)The links between an early phase of orogenesis, when orogens are commonly wedge shaped, and a later phase, with a plateau geometry, are investigated using coupled thermal-mechanical models with uniform velocity subduction ... -
Calculation of UV attenuation and colored dissolved organic matter absorption spectra from measurements of ocean color
(American Geophysical Union, Washington, DC, 2003-09)No abstract available. -
Prediction of surface currents and drifter trajectories on the inner Scotian Shelf
(2003-09)The predictive skill of a simple model of surface flow on the Scotian Shelf is assessed using oceanographic data collected in February 1996. The model is forced by wind stress, water density, and sea level along the open ... -
Crustal structure of the ocean-continent transition at Flemish Cap: Seismic refraction results
(2003-11)[1] We conducted a seismic refraction experiment across Flemish Cap and into the deep basin east of Newfoundland, Canada, and developed a velocity model for the crust and mantle from forward and inverse modeling of data ... -
Effects of temperature and circulation on the population dynamics of Calanus finmarchicus in the Gulf of St. Lawrence and Scotian Shelf: Study with a coupled, three-dimensional hydrodynamic, stage-based life history model
(2003-11)We developed a physical-biological model for the Gulf of St. Lawrence (GSL) and Scotian Shelf (SS) by coupling a stage-based life-history model of the planktonic copepod Calanus finmarchicus to a three-dimensional ocean ... -
Spectrally weighted transparency in models of water-column photosynthesis and photoinhibition by ultraviolet radiation
(2004)We present a simple method for describing the influence of variable attenuation of spectral irradiance, Kd(lambda), on water-column photosynthesis and its inhibition by ultraviolet radiation (UV). The approach is based on ... -
What controls the mixed-layer depth in deep-sea sediments? The importance of particulate organic carbon flux
(2004-03)No abstract available. -
Mapping coastal optical and biogeochemical variability using an autonomous underwater vehicle and a new bio-optical inversion algorithm
(2004-08)Autonomous underwater vehicles (AUVs) can map water conditions at high spatial ( horizontal and vertical) and temporal resolution, including under cloudy conditions when satellite and airborne remote sensing are not feasible. ... -
Dichloromethane in North Atlantic waters
(2004-09)[1] Dichloromethane is an atmospheric trace gas that has a tropospheric lifetime on the order of 5 months and has major anthropogenic sources. Evidence has been presented for an oceanic source. This paper reports measurements ... -
Crustal structure of the northern Nova Scotia rifted continental margin (eastern Canada)
(2004-09)[ 1] The Nova Scotia continental margin off eastern Canada marks a transition from a volcanic to a nonvolcanic style of rifting. The northern ( nonvolcanic) segment of the margin was studied by a 490-km-long refraction ... -
Controls of the surface water partial pressure of CO2 in the North Sea
(2005)The seasonal variability of the partial pressure of CO2 (pCO(2)) has been investigated in the North Sea, a northwest European shelf sea. Based on a seasonal and high spatial resolution data set the main controlling factors ... -
The carbon budget of the North Sea
(2005)A carbon budget has been established for the North Sea, a shelf sea on the NW European continental shelf. The carbon exchange fluxes with the North Atlantic Ocean dominate the gross carbon budget. The net carbon budget ... -
New algorithms for MODIS sun-induced chlorophyll fluorescence and a comparison with present data products
(2005-02)We discuss important sources of variability in sun-induced chlorophyll fluorescence and examine difficulties in deriving fluorescence data products from satellite imagery, with a focus on the MODerate-resolution Imaging ... -
Distribution of N2O in the Baltic Sea during transition from anoxic to oxic conditions
(2006)In January 2003, a major inflow of cold and oxygen-rich North Sea Water terminated an ongoing stagnation period in parts of the central Baltic Sea. In order to investigate the role of North Sea Water inflow in the production ... -
Nitrous oxide in the North Atlantic Ocean
(2006)In order to get a comprehensive picture of the distribution of nitrous oxide (N(2)O) in the North Atlantic Ocean, measurements of dissolved nitrous oxide were made during three cruises in the tropical, subtropical and ... -
A seasonal study of methyl bromide concentrations in the North Atlantic (35 degrees-60 degrees N)
(2006-04)Methyl bromide concentrations in and over the North Atlantic were examined during spring, summer, and fall 2003. The results demonstrate that seasonality plays a great role in controlling methyl bromide fluxes from and ... -
Modeling events of sea-surface variability using spectral nudging in an eddy permitting model of the northeast Pacific Ocean
(2006-06)[ 1] Eddies are an important part of the current system that hugs the coasts of British Columbia and Alaska. The ability of "spectral nudging'' to improve the eddy statistics determined from model simulations of this current ... -
Assimilating long-term hydrographic information into an eddy-permitting model of the North Atlantic
(American Geophysical Union, Washington, DC, 2006-09)No abstract available.