Showing papers by "Antonio Mannino published in 2013"
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07 Aug 2013TL;DR: In this article, high-molecular-weight dissolved organic matter (DOM) from two estuaries in the northwest Atlantic Ocean was analyzed, and it was found that black carbon (BC) is a significant component of previously uncharacterized DOM, suggesting that river-estuary systems are important exporters of recalcitrant dissolved organic carbon to the ocean.
Abstract: Analysis of high-molecular-weight dissolved organic matter (DOM) from two estuaries in the northwest Atlantic Ocean reveals that black carbon (BC) is a significant component of previously uncharacterized DOM, suggesting that river-estuary systems are important exporters of recalcitrant dissolved organic carbon to the ocean.
106 citations
TL;DR: In this paper, the seasonal and interannual variability of surface ocean CO2 and sea-air CO2 flux for five physically and biologically distinct regions of the eastern North American continental shelf: the South Atlantic Bight, the Mid-Atlantic Bight (MAB), the Gulf of Maine (GoM), Nantucket Shoals and Georges Bank (NS+GB), and the Scotian Shelf (SS).
Abstract: Underway and in situ observations of surface ocean pCO2, combined with satellite data, were used to develop pCO2 regional algorithms to analyze the seasonal and interannual variability of surface ocean pCO2 and sea-air CO2 flux for five physically and biologically distinct regions of the eastern North American continental shelf: the South Atlantic Bight (SAB), the Mid-Atlantic Bight (MAB), the Gulf of Maine (GoM), Nantucket Shoals and Georges Bank (NS+GB), and the Scotian Shelf (SS). Temperature and dissolved inorganic carbon variability are the most influential factors driving the seasonality of pCO2. Estimates of the sea-air CO2 flux were derived from the available pCO2 data, as well as from the pCO2 reconstructed by the algorithm. Two different gas exchange parameterizations were used. The SS, GB+NS, MAB, and SAB regions are net sinks of atmospheric CO2 while the GoM is a weak source. The estimates vary depending on the use of surface ocean pCO2 from the data or algorithm, as well as with the use of the two different gas exchange parameterizations. Most of the regional estimates are in general agreement with previous studies when the range of uncertainty and interannual variability are taken into account. According to the algorithm, the average annual uptake of atmospheric CO2 by eastern North American continental shelf waters is found to be between 3.4 and 5.4 Tg C/yr (areal average of 0.7 to 1.0 mol CO2 /sq m/yr) over the period 2003-2010.
95 citations
TL;DR: In this paper, the authors apply analytical approaches for determining optimal spatial resolution, dominant spatial scales of variability ("patches"), and proportions of patch variability that can be resolved from four river plumes around the world between 2008 and 2011.
73 citations
ETH Zurich1, Pierre-and-Marie-Curie University2, Centre national de la recherche scientifique3, University of Cape Town4, Oregon State University5, University of Connecticut6, College of Charleston7, University of Vigo8, Plymouth Marine Laboratory9, University of the Highlands and Islands10, University of California, San Diego11, University of Maryland, College Park12, Bedford Institute of Oceanography13, National Oceanography Centre, Southampton14, Goddard Space Flight Center15, Bermuda Institute of Ocean Sciences16, University of South Florida St. Petersburg17, University of California, Santa Barbara18, Woods Hole Oceanographic Institution19, Virginia Institute of Marine Science20, National Ocean Service21, Lamont–Doherty Earth Observatory22, Hokkaido University23, Centre for Maritime Research and Experimentation24, Leibniz Institute for Baltic Sea Research25, Australian Antarctic Division26
TL;DR: The MAREDAT pigment database provides high quality measurements of the major taxonomic pigments including chlorophylls a and b and may be used in varying combinations to estimate phytoplankton community composition, which is expected to be of use in the marine ecology, remote sensing and ecological modeling communities.
Abstract: . A global pigment database consisting of 35 634 pigment suites measured by high performance liquid chromatography was assembled in support of the MARine Ecosytem DATa (MAREDAT) initiative. These data originate from 136 field surveys within the global ocean, were solicited from investigators and databases, compiled, and then quality controlled. Nearly one quarter of the data originates from the Laboratoire d'Oceanographie de Villefranche (LOV), with an additional 17% and 19% stemming from the US JGOFS and LTER programs, respectively. The MAREDAT pigment database provides high quality measurements of the major taxonomic pigments including chlorophylls a and b, 19'-butanoyloxyfucoxanthin, 19'-hexanoyloxyfucoxanthin, alloxanthin, divinyl chlorophyll a, fucoxanthin, lutein, peridinin, prasinoxanthin, violaxanthin and zeaxanthin, which may be used in varying combinations to estimate phytoplankton community composition. Quality control measures consisted of flagging samples that had a total chlorophyll a concentration of zero, had fewer than four reported accessory pigments, or exceeded two standard deviations of the log-linear regression of total chlorophyll a with total accessory pigment concentrations. We anticipate the MAREDAT pigment database to be of use in the marine ecology, remote sensing and ecological modeling communities, where it will support model validation and advance our global perspective on marine biodiversity. The original dataset together with quality control flags as well as the gridded MAREDAT pigment data may be downloaded from PANGAEA: http://doi.pangaea.de/10.1594/PANGAEA.793246 .
45 citations
06 Mar 2013
1 citations
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26 Jun 20131 citations