The
Source and Fate of Primary Production in Relation to Carbon Fluxes on NOAA's Long Line
Cruises
Francisco Chavez, Reiko Michisaki, Mike Kelley,
Peter Walz , Sarah Lyons
N95F: Indian Ocean Fall 1995
Coastal Zone Color Scanner (CZCS) climatology map of January,
February, March 1978-1986
The N95F cruise ran from February thru October 1995, thru the intermonsoonal and summer
South West monsoonal (June-October) periods. Measurements were made of primary and new
production observations relevant to climate and global change over large portions of the
global ocean in an attempt to quantify the effects of the biological system on the carbon
and nitrogen cycles.
 On leg 8, from Perth, Australia to Colombo, Sri Lanka,
productivity and nutrients data were collected at 31 CTD stations. The horizontal and
vertical variability of phytoplankton biomass and composition, in the rates of primary and
new production, in the optical character of the upper ocean and their relation to the
major pools of ocean carbon were determined. Below is a table describing the legs of the
cruise.
| Leg |
Date |
Transit |
Project |
| 1 |
Feb. 20 - Mar. 15 |
San Juan, P.R./ Durban, S.A. |
RITS/WOCE |
| 2 |
Mar. 21 - Apr.22 |
Durban, S.A./ Colombo, S.L. |
WOCE |
| 3 |
Apr. 28 - May 24 |
Colombo, S.L./ Muscat, Oman |
GLOBEC |
| 4 |
May 31 - June 30 |
Muscat, Oman/ Victoria, Seychelles |
WOCE II |
| 5 |
July 12 - July 23 |
Victoria, Seychelles/ Muscat, Oman |
WOCE II |
| 6 |
July 31 - Aug. 26 |
Muscat, Oman/ Diego Garcia |
GLOBEC |
| 7 |
Aug. 29 - Sep. 8 |
Diego Garcia/ Perth, Australia |
OACES |
| 8 |
Sep. 22- Oct. 24 |
Perth, Australia/ Colombo, S.L. |
OACES |
Table 1. A brief description of the legs, dates, and projects of the Indian Ocean
cruise. Radiatively Important Trace Species (RITS), World Ocean Circulation Experiment
(WOCE), Global Ocean Ecosystems Dynamics (GLOBEC), Ocean Atmosphere Carbon Exchange Study
(OACES)
An MBARI Underway System was deployed on board and covered leg 1 to leg 8. The underway
system ran continuously collecting nitrate, fluorescence, sea surface temperature
(sst),
salinity, and chlorophyll a derived from fluorscence. An AGU poster presentation of
Underway results are available here.
For further information contact Francisco Chavez (chfr@mbari.org)
or Reiko Michisaki (reiko@mbari.org) .
Next: Methods and Materials
Last Updated: 28 April, 2004
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