Accession Number : ADA313793

Title :   Oceanic Fluxes of Mass, Heat and Freshwater: A Global Estimate and Perspective.

Descriptive Note : Doctoral thesis,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s) : Macdonald, Alison M.

PDF Url : ADA313793

Report Date : SEP 1995

Pagination or Media Count : 331

Abstract : Data from fifteen globally distributed, modern, high resolution, hydrographic oceanic transects are combined in an inverse calculation using large scale box models. The models provide estimates of the global meridional heat and freshwater budgets and are used to examine the sensitivity of the global circulation, both inter and intra-basin exchange rates, to a variety of external constraints provided by estimates of Ekman, boundary current and throughflow transports. A solution is found which is consistent with both the model physics and the global data set, despite a twenty five year time span and a lack of seasonal consistency among the data. The overall pattern of the global circulation suggested by the models is similar to that proposed in previously published local studies and regional reviews. However, significant qualitative and quantitative differences exist. These differences are due both to the model definition and to the global nature of the data set.

Descriptors :   *OCEAN CURRENTS, *HYDROGRAPHY, *HEAT FLUX, HEAT TRANSFER, DATA BASES, WATER FLOW, THESES, TURBULENT FLOW, EDDIES(FLUID MECHANICS), OCEANOGRAPHIC DATA, FRESH WATER, MASS FLOW, FLOW FIELDS, SEASONAL VARIATIONS, MASS TRANSFER, LEAST SQUARES METHOD, ATLANTIC OCEAN, PACIFIC OCEAN, MARINE CLIMATOLOGY, AIR WATER INTERACTIONS, OCEAN MODELS, DEEP WATER, FRONTS(OCEANOGRAPHY), INDIAN OCEAN, OCEAN BASINS, BOUNDARY LAYER FLOW.

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE