LUMCON has installed a Vaisala 915 mega-hertz LAP®-3000 Lower Atmosphere Profiler and a radio acoustic sounding system (RASS) at its DeFelice Marine Center in Cocodrie, Louisiana. As of mid-October 2004, this equipment has been collecting meteorological data as part of a three-year Minerals Management Services environmental studies program that is examining the effects of meteorological conditions and industry emissions on visibility within Breton National Wilderness Area (NWA). Data collected from these instruments will also be used in other regional studies that address ozone, particulate matter and regional haze.

The Lower Atmosphere Profiler is a Doppler radar system that measures vertical and horizontal wind speed and direction and vertical wind velocity to 3 km above ground level. The RASS system measures vertical temperature profiles to about 1 km above ground level. Wind, temperature, relative humidity and pressue data collected at the Marine Center will be used along with data gathered from monitoring equipment inside the Delta National Wildlife Refuge (NWR) at Pass a Loutre, to monitor air quality and locate emission sources that may be contributing to pollution within Breton NWA.bbb

Breton NWA is an Environmental Protection Agency (EPA) Prevention of Significant Deterioration (PSD) Class I Site and has been recognized as a region of reduced visibility. Since the EPA has issued new national ambient air quality standards for ozone and fine particulate matter and has set new regulations for regional haze, it is important to determine if reduced visibility within the Breton NWA is being caused by ozone or particulate matter emissions from nearby offshore oil and gas operations.

Read more about the radar profiler installation at LUMCON and the environmental monitoring within the Delta NWR by visiting the following site:

Deployment and Operation of Radar Profiler at the LUMCON Site in Louisiana, (GM-92-42-138)


About the Instrument

The LAP®-3000 is a pulsed Doppler radar that operates in clear air, reporting data from the Earth’s atmosphere three kilometers or more above ground level. The technology for the radar profiler was developed by the U.S. National Oceanic and Atmospheric Administration. The manufacturer of the profiler is Vaisala Inc.

The LAP®-3000 gives information for successive strata of the atmospheric boundary layer, creating profiles of wind data. From these profiles comes the generic name “wind profiler” for this type of weather radar. As also configured with a Radio Acoustic Sounding System (RASS) option, the wind profiler additionally provides profiles of virtual temperature data.

The LUMCON site wind profiler was commissioned in October 2004. It is owned and operated by the Minerals Management Service (MMS), U.S. Department of the Interior. The LUMCON profiler includes RASS and is configured to generate hourly profiles of wind and virtual temperature measurements. Both current and archive data files are available for viewing and downloading. A format description for each of the data file types is also presented.

More information about a LAP®-3000 Upgreade radar profiler is available at the DeTect, Inc. web site by clicking here.