have worked for many years to control particulate sphere as a result of restrictions in CFC emissions matter in the air, and the drive to develop more effec- mandated in the international Montreal Protocol. tive controls was accelerated on 16 July 1997 by the POAM III was placed in the same orbit as POAM U.S. Environmental Protection Agency (EPA). After II and thus has identical measurement coverage. More reviewing hundreds of peer-reviewed scientific stud- sensitive than its predecessor, POAM III is able to ies on the major health concerns associated with ex- measure deeper into the atmosphere with greater pre- posure to particulate matter, such as damage to lung cision. The launch of POAM III provides continua- tissue, cancer, and premature death, the EPA deter- tion of the unique and important measurements of mined that these changes were necessary to protect ozone in the polar regions, begun by POAM II, well public health and the environment. into the decade. To implement the new standards, the EPA will es- The POAM instruments are space-based atmospheric tablish a comprehensive monitoring network com- sensors that have been developed by NRL to monitor posed of 1500 monitors to determine ambient fine ozone and other atmospheric constituents that are im- particle concentrations across the country. After suf- portant to the ozone layer in the Arctic and Antarctic ficient measurements are taken, the EPA will desig- stratosphere. They are the only space-borne instruments nate areas of attainment, nonattainment, or unclass- to make measurements of the ozone profile over the polar ifiable. Those states designated as nonattainment will regions on a continuous basis. POAM collects detailed have three years to develop and submit pollution con- stratospheric information by scanning through the atmo- trol plans showing how they will meet the new standards. sphere while it follows the sun as it rises or sets. Each POAM profile of the stratosphere contains information NCSC's Environmental Programs group has devel- oped a number of software tools that support environ- on the abundance of ozone, aerosol particles, and other mental research and policy making. With funding and important atmospheric constituents at a vertical resolu- collaboration from the EPA and other agencies, the tion of 1 km. group has developed sophisticated tools that enable re- POAM III is an integral component of the middle searchers and policy makers to better manage the vast atmosphere science program being carried out jointly by amounts of data and other factors that affect environ- NRL's Remote Sensing and Space Science divisions. mental decision making. The EDSS and its component The objective of the program is to study the photochem- MAQSP are some of those tools that will be used in the istry and dynamics of the middle atmosphere using a Denver project. combined experimental and theoretical approach. In addition to POAM, the experimental programs include The EDSS, unlike other software packages that man- the Millimeter-Wave Atmospheric Sounder, the Ground- age only one or two aspects of modeling, provides a com- Based Water Vapor Spectrometer, and the Middle At- prehensive, integrated framework for predicting and mosphere High Resolution Spectrograph Investigation. interpreting the impact of environmental controls. It Information on these experiments can be found on the brings together modeling, data analysis and manipula- following Web sites: http://wvms.nrl.navy.mil/POAM/ tion, optimization and resource management tools, en- poam.html and http://uap-www.nrl.navy.mil/mahrsi/ abling policy makers to make informed decisions, such mahrsi.html. • as those required in developing state implementation plans for controlling ozone and particulate matter levels. Nava l Research Laboratory's POAM III to Measure Ozone into Next Decade The Naval Researcher Laboratory's (NRL) Polar Ozone and Aerosol Monitor III (POAM III) was Tim Heller 970 1998 launched on 23 March 1998, as a follow-on to the 971 Claire Martin Sowiak highly successful POAM II experiment, which pro- 972 Jill Brown vided unique data on ozone depletion in the polar 973 Charles D. McWilliams stratosphere. POAM III will continue this monitoring 974 Jason L. Pool of the polar stratosphere and provide valuable infor- 975 Joseph F. Sullivan 1998 mation on the way the earth's ozone layer is respond- 976 Bryan Hale 1998 ing to decreased abundances of chlorine in the atmo- 8 75 Bulletin of the American Meteorological Society
Bulletin of the American Meteorological Society – American Meteorological Society
Published: May 1, 1998
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