A scintillometer was used to detect atmospheric optical disturbances-called scintillations-caused by temperature, pressure and humidity. The instrument emits light from two transmitters, shown at left. The light traverses the local atmosphere, perturbed by density fluctuations. Some of the light enters the receiver, shown at right. (Image from Scintec at [http://www.scintec.com][www.scintec.com].)This month, scientists from the University…

ARM staff at the 2005 American Geophysical Union Fall Meeting provided information about the ARM science program and ARM Climate Research Facility to interested attendees. ARM file photo. Following a successful premier last year, ARM staffed its exhibit for a second time at the 2005 American Geophysical Union (AGU) Fall Meeting held December 5-9 in…

The new processor for the MMCR at Darwin collects spectral data in four different modes, resulting in approximately 3.4 gigabytes of signal output per day. ARM file photo. Virtually all cloud studies within the ARM Program involve the Millimeter Wavelength Cloud Radar (MMCR). This instrument is the only source for obtaining detailed information about cloud…

Recently, several new Sun servers joined the production system at the ARM Data Management Facility (DMF). These servers provide much needed cpu-the Central Processing Unit is the computing part of the computer known as the processor-power to handle the ever-increasing processing load. The DMF is responsible for collecting and processing hourly data from all three…

In January 2006, the ARM Mobile Facility (AMF) begins a year-long field campaign in Africa as part of a multi-year international experiment called the African Monsoon Multidisciplinary Analysis (AMMA). The AMF will be placed at the airport in Niamey, Niger, well within view of the Global Earth Radiation Budget (GERB) geostationary satellite. Cloud and radiative…

In September, installation was completed on the new Guest Instrument Facility in Barrow to provide additional space and ease crowded conditions. ARM file folder. To alleviate crowded conditions at its research facilities on the North Slope of Alaska (NSA) site in Barrow, ARM operations staff recently completed the installation of a new Guest Instrument Facility.…

The ARM website was upgraded with a new capability in September. ARM data users now have the ability to order data using the data cart from www.arm.gov. ARM file photo. On September 27, a new way to browse and order ARM data became available on the ARM website after nine months of development. ARM infrastructure…

The Egrett will fly in stacked formations with the Proteus during the upcoming Tropical Warm Pool International Cloud Experiment. This flight pattern will allow simultaneous sampling of the upper and lower parts of the cirrus anvils as well as remote measurements. ARM file photo. Between September 7-9, ARM researchers and international collaborators involved in flight…

Replacing the smaller Cessna 172, the new turbo-charged Cessna 206 prepares for departure to Ponca City, Oklahoma, where it will be managed by Greenwood Aviation. ARM file photo. To meet new requirements in the airborne aerosol and carbon-cycle measurements taken over ARM’s Southern Great Plains (SGP) site, a new Cessna Turbo 206 is replacing the…

Outside the hangar in Ponca City, Oklahoma, the optical head of the AATS-14 (inset) can be seen as the white dome on the roof of the Jetstream-31 aircraft. ARM file photo. Researchers from ARM Program and National Aeronautical and Space Administration (NASA) took to the skies in September for an 11-day Aerosol Lidar Validation Experiment…