The North Atlantic nutrient stream
نویسندگان
چکیده
منابع مشابه
Variability of the North Atlantic eddy-driven jet stream
Much of the atmospheric variability in the North Atlantic sector is associated with variations in the eddy-driven component of the zonal flow. Here we present a simple method to specifically diagnose this component of the flow using the low-level wind field (925-700 hPa). We focus on the North Atlantic winter season in the ERA-40 reanalysis. Diagnostics of the latitude and speed of the eddy-dri...
متن کاملStructure of the North Atlantic current in stream-coordinates and the circulation in the Newfoundland basin
Accurate knowledge of the absolute North Atlantic Current (NAC) transport has been limited in the past by the di$culty of obtaining absolute velocity measurements. For this study, historical hydrography was combined with time series of round trip travel time from inverted echo sounders, bottom pressure sensor measurements, and measured velocities from deep current meters, via a `Gravest Empiric...
متن کاملTransformation of the warm waters of the North Atlantic from a geostrophic stream function perspective
In order to obtain a description of the hydrographic state of the North Atlantic Current-Subpolar Front (NAC-SPF) system, historical hydrographic data from the subpolar North Atlantic are projected into a baroclinic stream function space, resulting in three dimensional gravest empirical mode (GEM) fields for temperature and specific volume anomaly, parameterized by pressure, dynamic height, and...
متن کاملBehaviour of the winter North Atlantic eddy-driven jet stream in the CMIP3 integrations
A systematic analysis of the winter North Atlantic eddy-driven jet stream latitude and wind speed from 52 model integrations, taken from the coupled model intercomparison project phase 3, is carried out and compared to results obtained from the ERA-40 reanalyses. We consider here a control simulation, twentieth century simulation, and two time periods (2046–2065 and 2081–2100) from a twenty-fir...
متن کاملNutrient distributions in baroclinic eddies of the oligotrophic North Atlantic and inferred impacts on biology
concentrations of nitrate plus nitrite (DNN) and phosphate (DIP) were found in the range of 1–20 nM with substantial spatial variability in the eddies, with resulting mean N:P molar ratios of p2.1. Chlorophyll biomass was well correlated with DNN but not DIP in the upper euphotic zone, suggesting N-limitation of marine phytoplankton at this time of year. Within the upper 140m, the water column ...
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ژورنال
عنوان ژورنال: Journal of Oceanography
سال: 1996
ISSN: 0916-8370,1573-868X
DOI: 10.1007/bf02235924