Share Email Print

Proceedings Paper

High-resolution shipboard measurements of phytoplankton: a way forward for enhancing the utility of satellite SST and chlorophyll for mapping microscale features and frontal zones in coastal waters
Author(s): Christy A. Jenkins; Joaquim I. Goes; Kali McKee; Helga do R. Gomes; Robert Arnone; Menghua Wang; Michael Ondrusek; P. V. Nagamani; T. Preethi Latha; K. H. Rao; V. K. Dadhwal
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Coastal eddies, frontal zones and microscale oceanographic features are now easily observable from satellite measurements of SST and Chl a. Enhancing the utility of these space-borne measurements for biological productivity, biogeochemical cycling and fisheries investigations will require novel bio-optical methods capable of providing information on the community structure, biomass and photo-physiology of phytoplankton associated on spatial scales that match these features. This study showcases high-resolution in-situ measurements of sea water hydrography (SeaBird CTD®), CDOM (WetLabs ALF®), phytoplankton functional types (PFTs, FlowCAM®), biomass (bbe Moldaenke AlgaeOnlineAnalyzer® and WetLabs ALF®) and phytoplankton photosynthetic competency (mini-FIRe) across microscale features encountered during a recent (Nov. 2014) cruise in support of NOAA's VIIRS ocean color satellite calibration and validation activities. When mapped against binned daily, Level 2 satellite images of Chl a, Kd490 and SST over the cruise period, these high-resolution in-situ data showed great correspondence with the satellite data, but more importantly allowed for identification of PFTs and water types associated with microscale features. Large assemblages of phytoplankton communities comprising of diatoms and diatom-diazotroph associations (DDAs), were found in mesohaline frontal zones. Despite their high biomass, these populations were characterized by low photosynthetic competency, indicative of a bloom at the end of its active growth possibly due to nitrogen depletion in the water. Other prominent PFTs such as Trichodesmium spp., Synechococcus spp. and cryptophytes, were also associated with specific water masses offering the promise and potential that ocean remote sensing reflectance bands when examined in the context of water types also measurable from space, could greatly enhance the utility of satellite measurements for biological oceanographic, carbon cycling and fisheries studies.

Paper Details

Date Published: 7 May 2016
PDF: 10 pages
Proc. SPIE 9878, Remote Sensing of the Oceans and Inland Waters: Techniques, Applications, and Challenges, 98780U (7 May 2016); doi: 10.1117/12.2225875
Show Author Affiliations
Christy A. Jenkins, Columbia Univ. (United States)
Joaquim I. Goes, Lamont-Doherty Earth Observatory, Columbia Univ. (United States)
Kali McKee, Lamont-Doherty Earth Observatory, Columbia Univ. (United States)
Helga do R. Gomes, Lamont-Doherty Earth Observatory, Columbia Univ. (United States)
Robert Arnone, The Univ. of Southern Mississippi (United States)
Menghua Wang, NOAA Ctr. for Satellite Applications and Research (United States)
Michael Ondrusek, NOAA Ctr. for Satellite Applications and Research (United States)
P. V. Nagamani, National Remote Sensing Ctr. (India)
T. Preethi Latha, National Remote Sensing Ctr. (India)
K. H. Rao, National Remote Sensing Ctr. (India)
V. K. Dadhwal, National Remote Sensing Ctr. (India)

Published in SPIE Proceedings Vol. 9878:
Remote Sensing of the Oceans and Inland Waters: Techniques, Applications, and Challenges
Robert J. Frouin; Satheesh C. Shenoi; K. H. Rao, Editor(s)

© SPIE. Terms of Use
Back to Top