Example of Global Spectral Model (GSM) at the Japan Meteorological Agency (JMA). (Image courtesy of Dr. Masayuki Nakagawa/Japan Meteorological Agency.) An improved convective triggering mechanism developed by ARM scientists based on ARM observations was implemented recently in the Global Spectral Model at the Japan Meteorological Agency (JMA) to improve surface precipitation forecasts. The revised triggering…

The AMF installation in Shouxian includes the primary shelters and operations area, an adjacent instrument field, and several more instruments located on the roof of a nearby building. ARM file photos. In its most complex ARM Mobile Facility (AMF) deployment to date, ARM is coordinating operations and data collection at four different sites for the…

Accurate time stamps on data collected at the ARM sites are very important for confidence in using the measurements for research. At the dispersed facilities across the ARM Southern Great Plains site, making sure all the instruments and their associated data logging systems are on the same clock is no easy task. Due to their…

With the flip of a switch, a mysterious cirrus dilemma turned from serious to solved recently, as the millimeter wavelength cloud radar (MMCR) passed inspection at the ARM Southern Great Plains (SGP) site in February. In addition, concerns about data from the ARM Mobile Facility (AMF)’s W-band ARM Cloud Radar (WACR) were alleviated through an…

In addition to airborne measurements obtained at the North Slope of Alaska for the Indirect and Semi-direct Aerosol Campaign (ISDAC) in April, the ARM site in Barrow also hosted several guest instruments throughout the campaign. Measurements from these additional instruments will provide important supplementary data to the continuous data collected at Barrow for investigating the…

In late April, the ARM Technical Director attended an annual meeting of the National User Facility Organization. Comprised of representatives from Department of Energy (DOE) national user facilities, the purpose of this group is to promote and encourage discussions among user facility administrators, their management, and their user organization representatives by communicating current and future…

Cover of the latest report from the U.S. Interagency Arctic Research Policy Committee uses ARM field campaign imagery. An image collage representing the Mixed-Phase Arctic Cloud Experiment graces the cover of the latest report from the U.S. Interagency Arctic Research Policy Committee. The report, Arctic Observing Network (AON): Toward a U.S. Contribution to Pan-Arctic Observing,…

Probes mounted under one wing of the NRC Convair-580. ARM file photo. Ending its mission with a final flight on April 30, 2008, the Indirect and Semi-Direct Aerosol Campaign (ISDAC) flew a total of 103 research hours, completing 27 science flights primarily in the region around the ARM North Slope of Alaska site in Barrow.…

A location near the airport on the northern end of Graciosa Island was identified as an excellent location for operating the ARM Mobile Facility. Image source: Luis Miguens Indications from a scouting trip by the ARM Mobile Facility (AMF) science and operations management team are that an excellent site for the 2009 deployment may have…