Contributors | Affiliation | Role |
---|---|---|
Abraham, Edward | New Zealand National Institute of Water and Atmospheric Research (NIWA) | Principal Investigator |
Mackie, Doug | University of Otago | Contact |
Gegg, Stephen R. | Woods Hole Oceanographic Institution (WHOI) | BCO-DMO Data Manager |
See SOIREE Preliminary Voyage Report
See comments in dataset description as well
A Chelsea instruments CTD/Fluorometer was mounted in a chamber that was supplied with
flow-through sea-water. From this instrument Temperature and Fluorescence were logged.
A Chelsea Instruments Fasttracka FRRF was used to record phytoplankton photosynthetic
competency (Fv/Fm).
See SOIREE Preliminary Voyage Report
See comments in dataset description as well
BCO-DMO Processing Notes
Generated from original file das_5minute.txt provided on the
Deep-Sea Research II 48 (2001) accompanying CD-Rom
BCO-DMO Edits
- Parameter names modified to conform to BCO-DMO convention
- date reformatted to YYYYMMDD
- time reformatted to HHMM
- Note: Some times with 59 seconds truncated when fmtted for BCO-DCO
- lat/lon values padded o 4 decimal places
- other data values padded to 2 decimal places
- Note: Wind Speed and Wind Direction appear to have same values
File |
---|
DAS.csv (Comma Separated Values (.csv), 541.24 KB) MD5:695a2a5cc695de5867fb0b6dfcb8ef05 Primary data file for dataset ID 2849 |
Parameter | Description | Units |
date | date | YYYYMMDD |
lon | longitude, negative denotes West | decimal degrees |
lat | latitude, negative denotes South | decimal degrees |
time | time | HHMM |
SeaTemp | Sea Surface Temperature | degrees celsius |
fluor | Fluorescence | volts |
Fv_to_Fm_from_FRRF | Ratio of Phytoplankton Photosynthetic Competency from Fast Repetition Rate Fluorometry | dimensionless |
WindSpeed | Wind Speed | knots |
WindDirection | Wind Direction | degrees |
AirTemp | Air Temperature | degrees celsius |
BarometricPressure | Barometric Pressure | decibars |
RelativeHumidity | Relative Humidity | percentage |
Dataset-specific Instrument Name | CTD/Fluorometer |
Generic Instrument Name | CTD-FRRfluorometer |
Dataset-specific Description | Chelsea instruments CTD-Fluorometer was used to log Temperature and Fluorescence |
Generic Instrument Description | A CTD-FRRf fluorometer is an instrument package designed to measure hydrographic information (pressure, temperature and conductivity) and chlorophyll fluorescence. (see more at URL: http://www.chelsea.co.uk/Instruments%20FASTtracka.htm) For example, a Chelsea FASTtracka CTD (conductivity, temperature, and depth) device can be configured with additional sensors to measure fluorescence and photosynthetically active radiation (PAR) in the water column. Fluorescence data collected by the CTD are subsequently calibrated and corrected to give the average concentration of chlorophyll a in the water column. The Chelsea system can be configured as part of a towed package or in a shipboard pumping system. (see more from Chelsea Instruments, Molesey, Surrey, United Kingdom at URL: http://www.chelsea.co.uk/ |
Dataset-specific Instrument Name | Fast Repetion Rate Fluorometer |
Generic Instrument Name | Fast Repetition Rate Fluorometer |
Dataset-specific Description | A Chelsea Instruments Fasttracka FRRF was used to record phytoplankton photosynthetic
competency (Fv/Fm) |
Generic Instrument Description | An FRRf is used for measuring the fluorescence of a sample of phytoplankton photosynthetic competency (Fv/Fm). |
Website | |
Platform | R/V Tangaroa |
Report | |
Start Date | 1999-01-31 |
End Date | 1999-03-01 |
Description | Cruise to the Southern Ocean as part of the Fe Sythesis project whose aim was to maintain a coherent patch of iron-enriched seawater for the duration of SOIREE and to interpret any iron-mediated effects on the patch by conducting measurements and performing experiments during this period. |
Project in the Southern Ocean aimed at maintaining a coherent patch of iron-enriched seawater for the duration of project and to interpret any iron-mediated effects on the patch by conducting measurements and performing experiments during this period of the project.
The Southern Ocean Iron RElease Experiment (SOIREE), was the first in situ iron fertilization experiment performed in the polar waters of the Southern Ocean. SOIREE was an interdisciplinary study involving participants from six countries, and took place in February 1999 south of the Polar Front in the Australasian-Pacific sector of the Southern Ocean.
Approximately 3800 kg of acidified FeSO4.7H2O and 165 g of the tracer sulphur hexafluoride (SF6) were added to a 65-m deep surface mixed layer over an area of ~50 km2. Initially, mean dissolved iron concentrations were ~2.7 nM, but decreased to ambient levels within days, requiring subsequent additions of 1550-1750 kg of acidified FeSO4.7H2O on days 3, 5 and 7 of the experiment.
During the 13-day site occupation, there were iron-mediated increases in phytoplankton growth rates, with marked increases in chlorophyll a (up to 2 µgl-1) and production rates (up to 1.3 gCm-2d-1). These resulted in subsequent changes in the pelagic ecosystem structure, and in the cycling of carbon, silica and sulphur, such as a 10% drawdown of surface CO2.
The SOIREE bloom persisted for >40 days following our departure from the site, as observed via SeaWiFS remotely sensed observations of Ocean Colour.
BCO-DMO Note:
All original data and metadata provided on a CD-Rom accompanying the Deep-Sea Research II 48 (2001) volume. The CD-Rom contains the main SOIREE datasets and ancillary information including the pre-experiment 'desktop' database study for site-selection, and satellite images of the SOIREE bloom.
© 2001 Elsevier Science Ltd. All rights reserved.
SOIREE Preliminary Voyage Report
SOIREE Introduction and Summary, Deep-Sea Research II 48 (2001) 2425-2438
SOIREE Cruise Track
The two main objectives of the Iron Synthesis program (SCOR Working Group proposal, 2005), are:
1. Data compilation: assembling a common open-access database of the in situ iron experiments, beginning with the first period (1993-2002; Ironex-1, Ironex-2, SOIREE, EisenEx, SEEDS-1; SOFeX, SERIES) where primary articles have already been published, to be followed by the 2004 experiments where primary articles are now in progress (EIFEX, SEEDS-2; SAGE, FeeP); similarly for the natural fertilizations S.O.JGOFS (1992), CROZEX (2004/2005) and KEOPS (2005).
2. Modeling and data synthesis of specific aspects of two or more such experiments for various topics such as physical mixing, phytoplankton productivity, overall ecosystem functioning, iron chemistry, CO2 budgeting, nutrient uptake ratios, DMS(P) processes, and combinations of these variables and processes.
SCOR Working Group proposal, 2005. "The Legacy of in situ Iron Enrichments: Data Compilation and Modeling".
http://www.scor-int.org/Working_Groups/wg131.htm
See also: SCOR Proceedings Vol. 42 Concepcion, Chile October 2006, pgs: 13-16 2.3.3 Working Group on The Legacy of in situ Iron Enrichments: Data Compilation and Modeling.
The first objective of the Iron Synthesis program involves a data recovery effort aimed at assembling a common, open-access database of data and metadata from a series of in-situ ocean iron fertilization experiments conducted between 1993 and 2005. Initially, funding for this effort is being provided by the Scientific Committee on Oceanic Research (SCOR) and the U.S. National Science Foundation (NSF).
Through the combined efforts of the principal investigators of the individual projects and the staff of Biological and Chemical Oceanography Data Management Office (BCO-DMO), data currently available primarily through individuals, disparate reports and data agencies, and in multiple formats, are being collected and prepared for addition to the BCO-DMO database from which they will be freely available to the community.
As data are contributed to the BCO-DMO office, they are organized into four overlapping categories:
1. Level 1, basic metadata
(e.g., description of project/study, general location, PI(s), participants);
2. Level 2, detailed metadata and basic shipboard data and routine ship's operations
(e.g., CTDs, underway measurements, sampling event logs);
3. Level 3, detailed metadata and data from specialized observations
(e.g., discrete observations, experimental results, rate measurements) and
4. Level 4, remaining datasets
(e.g., highest level of detailed data available from each study).
Collaboration with BCO-DMO staff began in March of 2008 and initial efforts have been directed toward basic project descriptions, levels 1 and 2 metadata and basic data, with detailed and more detailed data files being incorporated as they become available and are processed.
The Iron Synthesis Program is funded jointly by the Scientific Committee on Oceanic Research (SCOR) and the U.S. National Science Foundation (NSF).