| Contributors | Affiliation | Role |
|---|---|---|
| Olson, Robert | Woods Hole Oceanographic Institution (WHOI) | Principal Investigator |
| Chandler, Cynthia L. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Picophytoplankton cell counts
See Platform deployments for cruise specific documentation
| Parameter | Description | Units |
| event | event number from event log | |
| sta | station number from event log | |
| sta_std | Arabian Sea standard station identifier | |
| cast | CTD rosette cast number from event log | |
| bot | CTD rosette bottle number | |
| depth_n | nominal sample depth | meters |
| coccus_s | Synechococcus | cells/milliliter |
| coccus_p | Prochlorococcus | cells/milliliter |
| phyto_e_u | ultra eukaryotic phytoplankton | cells/milliliter |
| Dataset-specific Instrument Name | Niskin Bottle |
| Generic Instrument Name | Niskin bottle |
| Dataset-specific Description | CTD/Niskin Rosette bottles. |
| Generic Instrument Description | A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. |
| Website | |
| Platform | R/V Thomas G. Thompson |
| Start Date | 1995-07-17 |
| End Date | 1995-08-15 |
| Description | Methods & Sampling PI: Robert Olson of: Woods Hole Oceanographic Institution dataset: Picophytoplankton cell counts dates: July 18, 1995 to August 11, 1995 location: N: 22.5001 S: 9.9966 W: 57.2997 E: 68.7507 project/cruise: Arabian Sea/TTN-049 - Process Cruise 4 (Middle SW Monsoon) ship: Thomas Thompson PI Note: Our data on picophytoplankton counts were obtained by flow cytometry of preserved samples (0.1% glutaraldehyde, stored in liquid nitrogen). Samples collected from CTD/rosette bottle casts, usually 12 depths per station. Rob Olson Biology Department Woods Hole Oceanographic Institution March 18, 1997 Notes on revised picophytoplankton data for TTN049, Process Cruise 4 Two important changes were made: 1. Correction was made for a software flaw which resulted in miscalculation of the analysis time and thus produced a 10%-15% error in cell numbers. 2. Cells observed in deep secondary chlorophyll maxima at the sub-oxic zone and previously classified as picoeukaryotes were reclassified as Prochlorophytes. |
| Website | |
| Platform | R/V Thomas G. Thompson |
| Start Date | 1995-10-29 |
| End Date | 1995-11-26 |
| Description | Methods & Sampling PI: Robert Olson (Woods Hole Oceanographic Institution) dataset: Picophytoplankton cell counts dates: October 29, 1995 to November 25, 1995 location: N: 24.3274 S: 10.0928 W: 56.5005 E: 67.1666 project/cruise: Arabian Sea/TTN-053 - Process Cruise 6 (bio-optics) ship: Thomas Thompson PI Note: Our data on picophytoplankton counts where obtained by flow cytometry of preserved samples (0.1% glutaraldehyde, stored in liquid nitrogen). Samples collected from CTD casts. |
The U.S. Arabian Sea Expedition which began in September 1994 and ended in January 1996, had three major components: a U.S. JGOFS Process Study, supported by the National Science Foundation (NSF); Forced Upper Ocean Dynamics, an Office of Naval Research (ONR) initiative; and shipboard and aircraft measurements supported by the National Aeronautics and Space Administration (NASA). The Expedition consisted of 17 cruises aboard the R/V Thomas Thompson, year-long moored deployments of five instrumented surface buoys and five sediment-trap arrays, aircraft overflights and satellite observations. Of the seventeen ship cruises, six were allocated to repeat process survey cruises, four to SeaSoar mapping cruises, six to mooring and benthic work, and a single calibration cruise which was essentially conducted in transit to the Arabian Sea.
The United States Joint Global Ocean Flux Study was a national component of international JGOFS and an integral part of global climate change research.
The U.S. launched the Joint Global Ocean Flux Study (JGOFS) in the late 1980s to study the ocean carbon cycle. An ambitious goal was set to understand the controls on the concentrations and fluxes of carbon and associated nutrients in the ocean. A new field of ocean biogeochemistry emerged with an emphasis on quality measurements of carbon system parameters and interdisciplinary field studies of the biological, chemical and physical process which control the ocean carbon cycle. As we studied ocean biogeochemistry, we learned that our simple views of carbon uptake and transport were severely limited, and a new "wave" of ocean science was born. U.S. JGOFS has been supported primarily by the U.S. National Science Foundation in collaboration with the National Oceanic and Atmospheric Administration, the National Aeronautics and Space Administration, the Department of Energy and the Office of Naval Research. U.S. JGOFS, ended in 2005 with the conclusion of the Synthesis and Modeling Project (SMP).
| Funding Source | Award |
|---|---|
| National Science Foundation (NSF) |