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  • Fishery products  (2)
  • Salinity  (2)
  • Atmosphere-ocean system  (1)
  • Nigerian Institute for Oceanography and Marine Research  (3)
  • American Meteorological Society  (2)
  • Springer Nature
  • 2005-2009  (5)
  • 1975-1979
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Keywords
Publisher
Years
Year
  • 1
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    Using Temperature–Salinity Relations in a Global Ocean Implementation of a Multivariate Data Assimilation Scheme (2008)
    American Meteorological Society
    Details
    Publication Date: 2017-04-04
    Description: In this paper results from the application of an ocean data assimilation (ODA) system, combining a multivariate reduced-order optimal interpolator (OI) scheme with a global ocean general circulation model (OGCM), are described. The present ODA system, designed to assimilate in situ temperature and salinity observations, has been used to produce ocean reanalyses for the 1962–2001 period. The impact of assimilating observed hydrographic data on the ocean mean state and temporal variability is evaluated. A special focus of this work is on the ODA system skill in reproducing a realistic ocean salinity state. Results from a hierarchy of different salinity reanalyses, using varying combinations of assimilated data and background error covariance structures, are described. The impact of the space and time resolution of the background error covariance parameterization on salinity is addressed.
    Description: This work has been funded by the ENACT Project (Contract EVK2-CT2001-00117) for A. Bellucci and P. Di Pietro, and partially by the ENSEMBLES Project (Contract GOCE-CT-2003-505539) for A. Bellucci.
    Description: Published
    Description: 3785-3807
    Description: 3.7. Dinamica del clima e dell'oceano
    Description: JCR Journal
    Description: reserved
    Keywords: ocean modelling ; data assimilation ; reanalysis ; upper ocean variability ; temperature ; Salinity ; 03. Hydrosphere::03.01. General::03.01.04. Ocean data assimilation and reanalysis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    The Role of the Land Surface Background State in Climate Predictability (2005)
    American Meteorological Society
    Details
    Publication Date: 2021-05-19
    Description: Skill in ensemble-mean dynamical seasonal climate hindcasts with a coupled land-atmosphere model and specified observed sea surface temperature is compared to that for long multi-decade integrations of the same model where the initial conditions are far removed from the seasons of validation. The evaluations are performed for surface temperature and compared among all seasons. Skill is found to be higher in the seasonal simulations than the multi-decadal integrations except during boreal winter. The higher skill is prominent even beyond the first month when the direct influence of the atmospheric initial state elevates model skill. Skill is generally found to be lowest during the winter season for the dynamical seasonal forecasts, equal to that of the long integrations, which show some of the highest skill during winter. The reason for the differences in skill during the non-winter months is attributed to the severe climate drift in the long simulations, manifest through errors in downward fluxes of water and energy over land and evident in soil wetness. The drift presses the land surface to extreme dry or wet states over much of the globe, into a range where there is little sensitivity of evaporation to fluctuations in soil moisture. Thus, the land-atmosphere feedback is suppressed, which appears to lessen the model’s ability to respond correctly over land to remote ocean temperature anomalies.
    Description: Center for Ocean-Land-Atmosphere Studies
    Description: Published
    Keywords: Atmosphere-ocean system
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
    Format: 503454 bytes
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  • 3
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    Icing of fish and construction of an iced fish box. (2008)
    Nigerian Institute for Oceanography and Marine Research | Lagos, Nigeria
    Details
    Publication Date: 2021-05-19
    Description: In many developing countries, coastal fisheries are very important and account for the greater part of fish landings. Because they employ canos, rafts and other primitive crafts. Present developments are concentrated on the small motorized vessels which cover greater arears and land more fish. The preservation of these catches on board and during distribution ashore presents great problems under tropical conditions. The simplest and most desirable solution is the chilling of these catches with ice. This paper describes the use of a new boxing system on board small fishing crafts.
    Description: NIOMR, Lagos
    Description: Published
    Keywords: Frozen products ; Frozen products ; Fishery products
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 20pp.
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  • 4
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    Fish production and processing in Nigeria (2006)
    Nigerian Institute for Oceanography and Marine Research | Lagos, Nigeria
    Details
    Publication Date: 2021-05-19
    Description: The paper highlights the importance of fish protein in essentially carbohydrate diets and relates increasing demand for fish to the short supply of protein of animal origin. The demand for fish in Nigeria from 1985 to the year 2000 is presented. Domestic production relative to demand is stressed. Estimated potential yields of resources from various bodies of water and indication of their present levels of exploration are indicated. The potential of aquaculture as the most reliable means of increasing production is emphasized while the limit of capture fishery for the same purpose is stressed. Government efforts to develop the fisheries and increase fish production are discussed together with possible causes responsible for failure of these efforts to achieve desired results. Efforts of enormous post harvest wastage of fish on the gap between fish production and fish that eventually reach consumers are examined. The paper finally summarises tradition methods of fish processing in Nigerian and highlights the potentials available for improving and diversifying utilisation of fishery resources to maximize their economic benefits.
    Description: NIOMR, LAGOS
    Description: Published
    Keywords: Fishery products ; Fishery products
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 2191994 bytes
    Format: application/pdf
    Format: 12pp.
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  • 5
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    Seasonal variation in surface temperature and salinity around Lagos harbour, Nigeria. (2006)
    Nigerian Institute for Oceanography and Marine Research | Lagos, Nigeria
    Details
    Publication Date: 2021-05-19
    Description: Continuous monitoring of Sea and Harbour (Lagoon) Surface temperature and salinity at two stations has been carried out from 1978 to 1981. This paper presents the findings for the period and relates it to the prevailing meteorological regimes. The pattern of sea surface temperature at Victoria beach in the study period shows a clearly defined mean maximum temperature of 29.34oC in April, and clearly defined mean minimum temperature of 25.63 in August. Depending on the year, there may be a less clearly defined mean maximum and minimum temperature in October/November and in January respectively. The pattern of surface temperature in the Harbour station is basically similar. The salinity cycle especially in the Harbour was found to be critically dependent on rainfall. Practical salinity values as low as zero was recorded in the Harbour during the rainy season while in the dry season, values greater than 30.0 were sometimes recorded. The effect of rainfall on sea surface salinity was expectedly less significant.
    Description: NIOMR, LAGOS
    Description: Published
    Keywords: Salinity ; Surface water ; Oceanography ; Harbours ; Surface temperature ; Surface salinity
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 2169641 bytes
    Format: application/pdf
    Format: 20pp.
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