Accession Number:

ADA254632

Title:

Applications of Ocean Color to Naval Warfare

Descriptive Note:

Final rept.

Corporate Author:

NAVAL OCEANOGRAPHIC AND ATMOSPHERIC RESEARCH LAB STENNIS SPACE CENTER MS

Report Date:

1992-05-01

Pagination or Media Count:

55.0

Abstract:

Remotely sensed ocean color technology offers the Navy a new source of environmental information to support U.S. Navy warfare operations and planning. Potential naval applications of ocean color were reviewed in a recent workshop report Pressman et al., 1989. This publication gives examples of ocean color applications that satisfy well-recognized requirements for oceanographic information in naval warfare activities. The technology behind these examples is sufficiently mature to allow near-term development of naval applications to use the new satellite ocean color instrument, the Sea-viewing Wide-Field-of-View Sensor SeaWiFS, beginning in 1993. Operational implementations of these naval applications will be based on real-time satellite ocean color imagery, backed up by optical climatologies derived through offline analyses. Ocean color is the spectral reflectance of the water column. It is measured remotely as wavelength-dependent radiance emerging from the sea surface. Ratios of water-leaving radiance emerging from the sea surface. Ratios of water-leaving radiances are used to calculate phytoplankton pigment concentration Gordon et al., 1983, and optical diffuse attenuation coefficients Austin and Petzold, 1981 Mueller et al., 1990. When ocean color is measured from space using images composed of visible wavelengths, up to 85 of the radiance measured in the 0.45 to 0.55 microns regions is sunlight that is scattered backward by the earths atmosphere. The atmosphere also attenuates the water-leaving radiance transmitted from the ocean surface on its path to the sensor. Therefore, atmospheric corrections must be applied to derive accurate ocean color parameters from satellite radiance measurements Gordon et al., 1983 Gordon et al., 1988.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Military Operations, Strategy and Tactics
  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE