NASA/Goddard Space Flight Center, NASA Headquarters Acquisition Branch, Code 210.H, Greenbelt, MD 20771

A -- NASA'S SENSOR INTERCOMPARISON AND MERGER FOR BIOLOGICAL AND INTERDISCIPLINARY OCEANIC STUDIES (SIMBIOS) PROJECT SOL NRA-99-OES-09 DUE 013000 POC Dr. John Marra, Program Scientist, Oceanography, Phone (202) 358-0310, Fax (202) 358-2770, Email jmarra@hq.nasa.gov WEB: Click here for the latest information about this notice, http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=D&;pin=04#NRA-99-OE S-09. E-MAIL: Dr. John Marra, jmarra@hq.nasa.gov. The National Aeronautics and Space Administration (NASA) intends to solicit proposals for scientific investigations and activities contributing to the continuation of NASA's Sensor Intercomparison and Merger for Biological and Interdisciplinary Oceanic Studies (SIMBIOS) project. Between 1996 and 2001, six major international satellite missions will be launched that are capable of providing routine global ocean color data. Several other experimental missions providing limited spatial and temporal coverage will also be launched. The global imagers involved (OCTS, POLDER on ADEOS-I and -II, SeaWiFS, MODIS on Terra and Aqua, MISR, MERIS, and GLI) are highly complementary in many important respects, but also exhibit significant differences in technical approach (e.g., sensor design) which have implications for calibration, atmospheric correction, and algorithm development and performance. This NRA solicits investigations in the areas of (1) satellite sensor characterization and calibration, (2) ocean bio-optical algorithm evaluation and development, (3) atmospheric correction algorithm evaluation and development, (4) field instrument calibration and in-situ measurement protocol refinement, and (5) data merger methodology development. The present announcement is for the selection of investigations to be carried out for a period of 3 years. Current investigators of SIMBIOS who wish to continue their science investigations with NASA support must propose to do so in response to this NRA. Other interested parties are also invited to propose. The NRA will be available electronically on the release date, via the Internet at the Earth Science Enterprise ''Home Page'' at '' http://www.earth.nasa.gov '' under ''Research Opportunities'' or via anonymous ftp at ftp.hq.nasa.gov/pub/ese. A paper copy will be available to those who do not have access to Internet by calling (202) 358-3552 and leaving a voice mail message. This announcement will be open for the period from December 2, 1999 through January 30, 2000, and proposals may be submitted at any time throughout that period. Posted 11/17/99 (D-SN401619). (0321)

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