nerc.ac.uk

Mapping Antarctic phytoplankton physiology using autonomous gliders

Carvalho, Filipa; Kohut, Josh; Gorbunov, Maxim; Schofield, Oscar; Oliver, Matthew J.. 2016 Mapping Antarctic phytoplankton physiology using autonomous gliders. In: OCEANS 2016 MTS/IEEE Monterey, Monterey, CA, USA, 19-23 Sept 2016. 1-6.

Before downloading, please read NORA policies.
[img] Text
07761193.pdf
Restricted to NORA staff only

Download (3MB)

Abstract/Summary

The integration of a FIRe sensor into a glider allows us to map, with high temporal and spatial resolution, phytoplankton physiological responses to physical forcing. Different missions were designed to evaluate the temporal and spatial variability of phytoplankton physiology by using a drift and a station keeping mission, respectively. Diel cycles collected show a clear diurnal variations driven by incident radiation, with both maximal fluorescence and photosynthetic efficiency (in any light adapted phytoplankton) showing reduced values only in the upper 10-15 meters of the water column at the highest irradiances. Further analyses comparing different MLD regimes have shown different photoacclimation responses (light saturation parameter, Ek) resulting from differences in solar radiation exposure conditions (both time and intensity), reflected in the depth of the ML. Further analyses include determining a method to correct the FIRe glider fluorescence profiles in the upper ocean during daytime by comparing the maximum fluorescence during the highest irradiance (daytime) with the lowest irradiance (nighttime).

Item Type: Publication - Conference Item (Paper)
Digital Object Identifier (DOI): https://doi.org/10.1109/OCEANS.2016.7761193
Date made live: 03 Oct 2018 15:59 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/521117

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...