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OCEANOGRAPHY
Includes the physical, chemical and biological aspects of oceans and seas; ocean dynamics; and marine resources. For related
information see also 43 Earth Resources and Remote Sensing.
20030022698 NASA Goddard Space Flight Center, Greenbelt, MD, USA
Low/Medium Density Biomass, Coastal and Ocean Carbon: A Carbon Cycle Mission
Esper, Jaime; Gervin, Jan; Kirchman, Frank; Middleton, Elizabeth; Knox, Robert; Gregg, Watson; Mannino, Antonio;
McClain, Charles; Herman, Jay; Hall, Forrest; [2003]; 4 pp.; In English; 4th IAA Symposium on Small Satellites for Earth
Observation, Apr. 2003, Berlin, Germany; Original contains black and white illustrations; No Copyright; Avail: CASI; A01,
Hardcopy
As part of the Global Carbon Cycle research effort, an agency-wide planning initiative was organized between October
2000 and June 2001 by the NASA Goddard Space Flight Center (GSFC) at the behest of the Associate Administrator for Earth
Science. The goal was to define future research and technology development activities needed for implementing a cohesive
scientific observation plan. A timeline for development of missions necessary to acquire the selected new measurements was
laid out, and included missions for low - medium density terrestrial biomass / coastal ocean / and ocean carbon. This paper
will begin with the scientific justification and measurement requirements for these specific activities, explore the options for
having separate or combined missions, and follow-up with an implementation study centered on a hyperspectral imager at
geosynchronous altitudes.
Author
Carbon Cycle; Oceanography; Biomass; Earth Sciences; Imaging Techniques; Coasts
20030031356 NASA Goddard Space Flight Center, Greenbelt, MD, USA
JASON-1 Precise Orbit Determination (POD) Through the Combination and Comparison of GPS, SLR, DORIS and
Altimeter Crossover Data
Luthcke, Scott B.; Zelensky, N. P.; Rowlands, D. D.; Lemoine, F. G.; Chinn, D. S.; Williams, T. A.; [2002]; 1 pp.; In English;
American Geophysical Union Meeting, 6-10 Dec. 2002, San Francisco, CA, USA; No Copyright; Avail: Other Sources;
Abstract Only
Jason-1, launched on December 7,2001, is continuing the time series of centimeter level ocean topography observations
as the follow-on to the highly successful TOPEX/POSEIDON (T/P) radar altimeter satellite. The precision orbit determination
(POD) is a critical component to meeting the ocean topography goals of the mission. T P has demonstrated that the time
variation of ocean topography can be determined with an accuracy of a few centimeters, thanks to the availability of highly
accurate orbits based primarily on SLR+DORIS tracking. The Jason-1 mission is intended to continue measurement of the
ocean surface with the same, if not better accuracy. Fortunately, Jason- 1 POD can rely on four independent tracking data types
available including near continuous tracking data from the dual frequency codeless BlackJack GPS receiver. Orbit solutions
computed using individual and various combinations of GPS, SLR, DORIS and altimeter crossover data types have been
determined from over 100 days of Jason-1 tracking data, The performance of the orbit solutions and tracking data has been
evaluated. Orbit solution evaluation and comparison has provided insight into possible areas of refinement. Several aspects
of the POD process are examined to obtain orbit improvements including measurement modeling, force modeling and solution
strategy. The results of these analyses will be presented.
Author
Topography; Time Series Analysis; Poseidon Satellite; Orbit Determination; Ocean Surface
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LIFE SCIENCES (GENERAL)
Includes general research topics related to plant and animal biology (non-human); ecology; microbiology; and also the origin,
development, structure, and maintenance of animals and plants in space and related environmental conditions. For specific topics in life
sciences see categories 52 through 55.
20030022747 NASA Ames Research Center, Moffett Field, CA, USA
Redundancies in Large-scale Protein Interaction Networks
Samanta, Manoj Pratim; Liang, Shoudan; January 21, 2003; 10 pp.; In English
Contract(s)/Grant(s): NAS2-19303; RTOP 519-90-12; Copyright; Avail: Other Sources
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