Dataset Available

Aquatic Laser Fluorescence Analyzer of surface water phytoplankton concentration, northern Gulf of Mexico, May 25, 2012 - July 24, 2013

Authors: Ajit Subramaniam
Published On: Feb 11 2016 19:07 UTC
DOI: https://doi.org/10.7266/N7PN93MW
UDI: R1.x132.139:0025
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No. of Files: 1

File Size: 31.41 MB

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Project Information

Funded By:
Gulf of Mexico Research Initiative

Funding Cycle:
RFP-I

Research Group:
Ecosystem Impacts of Oil and Gas Inputs to the Gulf (ECOGIG)

Point of Contact

Ajit Subramaniam
Columbia University / Lamont-Doherty Earth Observatory (LDEO)
ajit@ldeo.columbia.edu

Data Collection Period
2012-05-25
to
2013-07-24
Theme keywords

phytoplankton pigments, chlorophyll concentration, flow-through, surface seawater, temperature, salinity

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Abstract:

This dataset consists of data collected by the Aquatic Laser Fluorescence Analyzer (ALFA) of surface water phytoplankton concentration and colored dissolved organic matter (CDOM) fluorescence in the northern Gulf of Mexico that has been merged with the ship’s flow-through data system. The details of instrument and how it works can be found in Chekalyuk and Hafez (2008). The list of parameters (units) include Cruise ID (Text), Data Type (Text), Target (Data sequence number), Chlorophyll (mg/m^3), Chlorophyll Fluorescence (Blue Laser Ex, relative units), CDOM Fluorescence (Blue Laser Ex, relative units), Local Date (M/DD/YY), Local Time (HH:MM:SS AM/PM), Latitude (DD.DDD), Longitude (DD.DDD), UTC Date (M/DD/YY), UTC Time (HH:MM:SS AM/PM), SST (Sea Surface Temp, Deg C), TSG Temp (Thermosalinograph Temp Deg C), Salinity, Fluorometer (Ship, relative units). The ALFA unit was plumbed to the ship’s flow-through system and collected water from about 4m below the surface through an intact at the bow of the ship. The data was collected to understand the biogeographical variability in phytoplankton concentrations and CDOM in the northern Gulf of Mexico.

Suggested Citation:

Ajit Subramaniam. 2016. Aquatic Laser Fluorescence Analyzer of surface water phytoplankton concentration, northern Gulf of Mexico, May 25, 2012 - July 24, 2013. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7PN93MW

Publications:

D’souza, N. A., Subramaniam, A., Juhl, A. R., Hafez, M., Chekalyuk, A., Phan, S., … Montoya, J. P. (2016). Elevated surface chlorophyll associated with natural oil seeps in the Gulf of Mexico. Nature Geosci. doi:10.1038/ngeo2631

Purpose:

To understand the biogeographical variability in phytoplankton and CDOM (colored dissolved organic matter) concentrations in the Northern Gulf of Mexico surface waters

Data Parameters and Units:

Cruise ID (Text) Data Type (Text) Target (Data sequence number) Chlorophyll (mg/m^3) Chlorophyll Fluorescence (Blue Laser Ex, relative units) CDOM Fluorescence (Blue Laser Ex, relative units) Local Date (M/DD/YY) Local Time (HH:MM:SS AM/PM) Latitude (DD.DDD) Longitude (DD.DDD) UTC Date (M/DD/YY) UTC Time (HH:MM:SS AM/PM) SST (Sea Surface Temp, Deg C) TSG Temp (Thermosalinograph Temp Deg C) Salinity Fluorometer (Ship, relative units)

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