RADIOMETRIC CHARACTERIZATION PERFORMED AT NIST IMPROVES ACCURACY OF THE MARINE OPTICAL SPECTROGRAPH.

The Marine Optical Buoy (MOBY (jargon) moby - /moh'bee/ (From MIT, seems to have been in use among model railroad fans years ago. Derived from Melville's "Moby Dick", some say from "Moby Pickle") 1. Large, immense, complex, impressive. "A Saturn V rocket is a truly moby frob. ) project is a part NASA's Earth Observing System The Earth Observing System (EOS) is a program of NASA comprising a series of artificial satellite missions and scientific instruments in Earth orbit designed for long-term global observations of the land surface, biosphere, atmosphere, and oceans of the Earth. Program, and supports the validation of satellite ocean color imagery data that are used for understanding the global carbon cycle. The Marine Optical Spectrographic (MOS) system is used in MOBY to derive water-leaving radiance.

For the first time, a rigorous study of the radiometric properties of the MOS was performed using NIST' s Spectral Irradiance ir·ra·di·ant
adj.
Sending forth radiant light.

[Latin irradi and Radiance Calibrations with Uniform Sources (SIRCUS SIRCUS Standard Information Retrieval Capability for Users
SIRCUS SIDPERS Installation Retrieval Command/Unit Support ) facility, which uses broadly tunable lasers and integrating spheres to calibrate and characterize a wide variety of detector-based instrumentation. Using the measurements from SIRCUS, physicists at NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. assessed the effect of stray light on MOS measurements of water-leaving radiance. A stray-light-correction algorithm was developed and applied to a subset of MOS data sets, greatly reducing the uncertainty in these measurements. This work will have immediate impact on the ocean-color remote-sensing community.

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Publication:	Journal of Research of the National Institute of Standards and Technology
Article Type:	Brief Article
Geographic Code:	1USA
Date:	Jul 1, 2001
Words:	146
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Topics:	Artificial satellites Usage Ocean Observations Oceans Observations Radiation Measurement Radiation measurement Satellites (Spacecraft) Usage

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