Carbon export and regeneration in the coastal upwelling system of Monterey Bay, central California

In order to quantify the role of coastal upwelling regions as source or sink areas for carbon, the relationships between particulate organic carbon (POC) production, export, remineralization, and accumulation were examined in Monterey Bay from 1989 through 1992. During a normal upwelling year (1989–90), a high positive correlation (r = 0.91) is observed between biweekly primary production and POC export at 450 m. Primary production values range from 500 mgC m−2 d−1 during the winter, to 2600 mgC m−2 d−1 in the spring and summer upwelling months. Corresponding deep-water (450 m) POC fluxes vary from a minimum of 10 mgC m−2 d−1 in December, to 120 mgC m−2 d−1 in May. In contrast, the mid-1991 through 1992 data sets obtained during the \u2791–92 El Nino period, show a relatively poor correlation (r = 0.23) between productivity and carbon export. Calculated ratios of POC export to POC production (defined as e-ratios) display a trend for the three-year data sets in which the e-ratio values are greatest during periods of low productivity and decrease to minimal values when surface production is high. Upwelling-induced, offshore Ekman transport of organic matter and probable seasonal changes in the planktonic community structure are the mechanisms likely to be responsible for the e-ratio trends. Based on the data sets reported from this work, a simple box model of the annual export and regeneration of particulate organic carbon is presented for the Monterey Bay region. An appreciable advective and/or recycling “loss” from the euphotic zone of 362.8 gC m−2 y−1 is estimated, representing primarily algal material transported offshore and/or recycled within the upper 100 m of the water column. Annual mid-water (≈100– 450 m) and deep-water (\u3e450 m) POC remineralization rates of 71.8 gC m−2 y−1 of 7.2 gC m−2 y−1, respectively, are reported for Monterey Bay. The average POC rain rate to the underlying slope sediments is sufficient to satisfy reported benthic utilization requirements without invoking an additional input source of POC via deep lateral advection and/or the downslope movement of particulate material

The 1995 Science Information Management and Data Compression Workshop

This document is the proceedings from the 'Science Information Management and Data Compression Workshop,' which was held on October 26-27, 1995, at the NASA Goddard Space Flight Center, Greenbelt, Maryland. The Workshop explored promising computational approaches for handling the collection, ingestion, archival, and retrieval of large quantities of data in future Earth and space science missions. It consisted of fourteen presentations covering a range of information management and data compression approaches that are being or have been integrated into actual or prototypical Earth or space science data information systems, or that hold promise for such an application. The Workshop was organized by James C. Tilton and Robert F. Cromp of the NASA Goddard Space Flight Center

Summary of Research 1994

The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S. Government.This report contains 359 summaries of research projects which were carried out under funding of the Naval Postgraduate School Research Program. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, and technical reports. The research was conducted in the areas of Aeronautics and Astronautics, Computer Science, Electrical and Computer Engineering, Mathematics, Mechanical Engineering, Meteorology, National Security Affairs, Oceanography, Operations Research, Physics, and Systems Management. This also includes research by the Command, Control and Communications (C3) Academic Group, Electronic Warfare Academic Group, Space Systems Academic Group, and the Undersea Warfare Academic Group

REINAS: Real-Time Environmental Information Network and Analysis System: Phase IV.1-EXPERIMENTATION

The Real-Time Environmental Information Network and Analysis System (REINAS) is a continuing engineering research and development program with the goal of designing, developing and testing an operational prototype system for data acquisition, data management, and visualization. This system is to support the real-time utilization of advanced instrumentation in environmental science. Advances in continuous time measurements and improved spatial resolution allow the monitoring and understanding environmental phenomena in much greater detail than has previously been possible. The system is also designed to support the retrospective use of integrated environmental data sets. The project is a multi-year effort of the Baskin Center for Computer Engineering and Information Sciences of the University of California, Santa Cruz (UCSC), in cooperation with environmental scientists from the Naval Postgraduate School (NPS), and Monterey Bay Aquarium Research Institute (MBARI). The REINAS system has ..