Table of Contents

• Dataset Description
  • Methods & Sampling
• Parameters
• Instruments
• Deployments
• Project Information
• Program Information
• Funding

  PI:              William Broenkow
  of:              Moss Landing Marine Laboratories
  dataset:         MLML - Integrated daily incident PAR (400-700 nm)
  dates:           April 25, 1989 to June 7, 1989
  location:        N: 60.7483  S: 41.066  W: -26.0615  E: -17.67
  project/cruise:  North Atlantic Bloom Experiment cruises
  ship:            Atlantis II


  Note:   "Clear sky irradiance" (Frouin et al 1989, JGR) 
             is given at nominal stations
          (47N 21W and 59.5N 21W) for ozone 0.3, water 2.5.
          PAR irradiance was measured by LiCor Type LI-190SA cosine sensor.
          Scalar (spherical) PAR was measured by LiCor type LI-193-SB 
             for MLML incubator.

  Ref:    JGOFS North Atlantic Bloom long track and vertical profiling results.
          W.W. Broenkow, R.E. Reaves and M.A. Yarbrough  MLML Tech Pub 90-1
          Recorded: 14:16:19  16-FEB-90

One of the first major activities of JGOFS was a multinational pilot project, North Atlantic Bloom Experiment (NABE), carried out along longitude 20° West in 1989 through 1991. The United States participated in 1989 only, with the April deployment of two sediment trap arrays at 48° and 34° North. Three process-oriented cruises where conducted, April through July 1989, from R/V Atlantis II and R/V Endeavor focusing on sites at 46° and 59° North. Coordination of the NABE process-study cruises was supported by NSF-OCE award # 8814229. Ancillary sea surface mapping and AXBT profiling data were collected from NASA's P3 aircraft for a series of one day flights, April through June 1989.

A detailed description of NABE and the initial synthesis of the complete program data collection efforts appear in: Topical Studies in Oceanography, JGOFS: The North Atlantic Bloom Experiment (1993), Deep-Sea Research II, Volume 40 No. 1/2.

The U.S. JGOFS Data management office compiled a preliminary NABE data report of U.S. activities: Slagle, R. and G. Heimerdinger, 1991. U.S. Joint Global Ocean Flux Study, North Atlantic Bloom Experiment, Process Study Data Report P-1, April-July 1989. NODC/U.S. JGOFS Data Management Office, Woods Hole Oceanographic Institution, 315 pp. (out of print).

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).