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Biological SciencesBiochemistry

Moored Observations for the Forced Upper Ocean Dynamics Experiment in the Arabian Sea

Authors: John Marra; COLUMBIA UNIV PALISADES NY LAMONT-DOHERTY EARTH OBSERVATORY
Abstract:
My long-term goals are to understand how biological processes in the ocean affect, and are affected by, physical processes (mixing, stirring, and the penetration of light into the ocean). I want to figure out how irradiance and wind-stress influence the dynamics of the upper ocean, how these dynamics govern the rate and nature of primary production, and ultimately, the growth of phytoplankton populations. I also want to understand the feedback between the changes in phytoplankton biomass and the variability in optical properties of the sea, and to use the absorption and scattering properties of phytoplankton to predict photosynthesis and growth. The specific scientific objectives of this grant are as follows: (1) determine the diurnal, within-season, and seasonal variability of phytoplankton for a locale subject to strong seasonal wind-stress; (2) understand how POC:Chl changes with the advent of the SW monsoon; (3) determine whether the seasonal increase in phytoplankton affects the surface heating of the water column; and (4) determine whether the chlorophyll-specific primary production is constant throughout the year in the Arabian Sea, where strong seasonal signals in nutrients are characteristic.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Annual rept.
Pages: 4
Report Date: Jan 1998
Contract Number: N00014-94-1-0450
Report Number: A006155
Keywords relating to this report:
AIR WATER INTERACTIONS
ARABIAN SEA
CHLOROPHYLLS
DIURNAL VARIATIONS
GROWTH(GENERAL)
MIXED LAYER(MARINE)
MONSOONS
MOORED BODIES
OPTICAL PROPERTIES
PHOTOSYNTHESIS
PHYTOPLANKTON
SEASONAL VARIATIONS
SPECTRORADIOMETERS
STRATIFICATION
SURFACE TEMPERATURE
SURFACE WATERS
WIND STRESS
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