In 1995, the Ocean Time Series Program called CARIACO (Carbon Retention in a Colored Ocean) was initiated, completing 232 monthly core cruises through January 2017.
This
time series
In mathematics, a time series is a series of data points indexed (or listed or graphed) in time order. Most commonly, a time series is a sequence taken at successive equally spaced points in time. Thus it is a sequence of discrete-time data. ...
consists of field observations using ship, mooring, and satellite platforms in the eastern
Cariaco Basin at 10°30’N, 64°40’W. The program seeks to understand the relationship between surface primary production, physical forcing variables like the wind, and the settling flux of particles in this unique location.
''Ship observations''
Monthly oceanographic cruises are conducted on board the R/V Hermano Ginés of the
Fundación La Salle de Ciencias Naturales de Venezuela. The cruises serve to collect hydrographic, nutrient and carbon concentration, primary productivity and other biogeochemical observations throughout the entire water column (surface to 1300m) (Astor et al., 2003; Astor et al., 2005; Muller-Karger et al., 2001; Muller-Karger et al., 2009). Additionally, seasonal cruises to the CARIACO station are conducted to examine chemical and microbial processes (Scranton et al., 2006; Taylor et al., 2006).
''Moorings''
A sediment trap mooring, consisting of five sediment traps (located at depths of 150, 275, 400, 800, and 1200 m), is also deployed near the study site. This mooring collects the downward flux of particulate material (Thunell et al. 2000; Thunell et al., 2007), derived both from the primary production at the surface and the terrestrial material from the mainland.
''Satellite observations''
The
remote sensing
Remote sensing is the acquisition of information about an physical object, object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation. The term is applied especially to acquiring inform ...
component of the CARIACO Oceanographic Time Series Program is based on real-time and historical satellite measurements (Muller-Karger et al., 2005). The satellite data helps observe surface variations in
sea surface temperature
Sea surface temperature (or ocean surface temperature) is the ocean temperature, temperature of ocean water close to the surface. The exact meaning of ''surface'' varies in the literature and in practice. It is usually between and below the sea ...
(SST) and
ocean color
Ocean color is the branch of ocean optics that specifically studies the color of the water and information that can be gained from looking at variations in color. The color of the ocean, while mainly blue, actually varies from blue to green or e ...
, which include chlorophyll and river plumes.
Since it was initiated, this program has been supported by the
National Science Foundation
The U.S. National Science Foundation (NSF) is an Independent agencies of the United States government#Examples of independent agencies, independent agency of the Federal government of the United States, United States federal government that su ...
(NSF). It has also been supported by the
National Aeronautics and Space Administration
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the United States's civil space program, aeronautics research and space research. Established in 1958, it su ...
(NASA) and the
Fondo Nacional de Investigaciones Cientificas y Tecnologicas (FONACIT,
Venezuela
Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and many Federal Dependencies of Venezuela, islands and islets in the Caribbean Sea. It com ...
).
All data generated by the CARIACO program are available via the project web page
.
References
Astor, Y. M., M.I. Scranton, F. Muller-Karger, R. Bohrer, and J. García. 2005. Seasonal and interannual ''f''CO2 variability in a tropical coastal upwelling system. Marine Chemistry. 97 (3-4): 245-261.Astor, Y., F. Muller-Karger, and M. I. Scranton. 2003. Seasonal and Interannual Variation in the Hydrography of the Cariaco Basin: Implications for Basin Ventilation. Continental Shelf Research. Vol. 23. No. 1. 125-144.* Muller-Karger, F. E., C. Hu, S. Andréfouët, and R. Varela. 2005. The Color of the Coastal Ocean and applications in the solution of research and management problems. ''In'': Remote Sensing of Coastal Aquatic Environments: Technologies, Techniques and Application, R.L. Miller, C.E. Del Castillo and B.A. McKee
ds. Springer, 101–127.
* Muller-Karger, F. E., R. Varela,
R. Thunell, M. I. Scranton, G. Taylor, Y. Astor,
C. R. Benitez-Nelson, L. Lorenzoni, E. Tappa, M. A. Goñi, D. Rueda and C. Hu. 2009. The CARIACO Oceanographic Time Series. ''In'': K. K. Liu et al.
ds Carbon and Nutrient Fluxes in Continental Margins, Global Change, Chapter 8.5. The IGBP Series,
Muller-Karger, F. E., R. Varela, R. Thunell, M. Scranton, R. Bohrer, G. Taylor, J. Capelo, Y. Astor, E. Tappa, T. Y. Ho, and J. J. Walsh. 2001. Annual Cycle of Primary Production in the Cariaco Basin: Response to upwelling and implications for vertical export. Journal of Geophysical Research. 106:C3. 4527-4542.Scranton, M. I., M. McIntyre, G. T. Taylor, F. Muller-Karger, K. Fanning, and Y. Astor, 2006. Temporal Variability in the Nutrient Chemistry of the Cariaco Basin. In: Neretin L. N., (ed.), Past and Present Water Column Anoxia, NATO Sci Ser., Springer Publ., Netherlands, pp. 139-160.Taylor GT, Iabichella-Armas M, Varela R, Muller-Karger F, Lin X & Scranton MI., 2006. Microbial ecology of the Cariaco Basin's oxic/anoxic interface: the U.S.-Venezuelan CARIACO times series program. In: Neretin L. N., (ed.), Past and Present Water Column Anoxia, NATO Sci Ser., Springer Publ., Netherlands, p. 473-499.Thunell, R., C. Benitez-Nelson, R. Varela, Y. Astor and F. Müller-Karger. 2007. Particulate Organic Carbon Fluxes Along Upwelling-Dominated Continental Margins: Rates and Mechanisms. Global Biogeochem. Cycles, 21, GB1022 {{doi, 10.1029/2006GB002793.
Thunell, R., R. Varela, M. Llano, J. Collister, F. Muller-Karger, and R. Bohrer. 2000. Organic carbon flux in an anoxic water column: sediment trap results from the Cariaco Basin. Limnology and Oceanography. 45. 300-308.
Time series
Oceanographic Time-Series