Atmospheric Transport: Volcanic Ash

Volcanic Ash Modeling Volcanic ash is a hazard to aircraft because it can degrade engine performance and navigational and operational instrumentation. Operationally, the NWS runs the ARL-developed HYSPLIT model to forecast the transport and dispersion of volcanic ash in and near the U.S. Volcanic Ash Advisory Centers’ (VAAC) (Anchorage, AK, and Washington, DC) areas of responsibility.  Volcanic ash is…

HYSPLIT Volcanic Ash Model

Volcanic Ash Model Mt. Augustine volcanic eruption(Credit: Cyrus Read, U.S. Geological Survey) Volcanic ash is hazardous to aircraft because it can degrade engine performance and navigational and operational instrumentation. Meteorologists at the VAAC and the Meteorological Watch Offices use the HYSPLIT forecasts, among other sources of information, for writing Volcanic Ash Advisories and Significant Meteorological…

ARL News: National Volcanic Ash Operations Plan – August 30, 2007

ARL News National Volcanic Ash Operations Plan August 30, 2007 The Office of the Federal Coordinator for Meteorological Services and Supporting Research (OFCM) will soon publish the “National Volcanic Ash Operations Plan for Aviation and Support of the International Civil Aviation Organization (ICAO) International Airways Volcano Watch”. ARL’s role, outlined in the plan, is to…

ARL Weekly News – May 13, 2022

ARL Weekly News – May 13, 2022 Recent Events Sandia Labs Supplements MACCS Code with HYSPLIT Capabilities Sandia National Laboratories has published its report documenting the effort to supplement the Gaussian atmospheric transport and diffusion model currently in MACCS, a nuclear accident consequence analysis code, with a new option using ARL’s HYSPLIT model. Now, calculations…

ARL Weekly May 6, 2022

ARL Weekly News – May 6, 2022 Recent Events  Ariel Stein Appointed ARL Director NOAA has announced Dr. Ariel Stein is appointed the Director, Air Resources Laboratory (ARL) effective May 8, 2022. Dr. Stein is currently Director of NOAA’s Global Monitoring Laboratory. Ariel has agreed to serve as Acting Director of NOAA’s Global Monitoring Laboratory…

Ariel Stein Appointed ARL Director

Ariel Stein Appointed ARL Director May 9, 2022 NOAA has announced Dr. Ariel Stein is appointed the Director, Air Resources Laboratory (ARL) effective May 8, 2022. Dr. Stein is currently Director of NOAA’s Global Monitoring Laboratory. Ariel has agreed to serve as Acting Director of NOAA’s Global Monitoring Laboratory (GML) until the permanent GML position…

ARL Weekly News – January 28, 2022

ARL Weekly News – January 28, 2022 Recent Events USCRN Briefing to Sen. Whitehouse Dr. Howard Diamond, in his role as the U.S. Climate Reference Network (USCRN) Program Manager, participated in a meeting that was set up by NOAA’s Office of Legislative and Intergovernmental Affairs with Mr. Dan Dudis, senior counsel for Senator Sheldon Whitehouse…

ARL Leadership

ARL Leadership ARL Director: Dr. Ariel Stein Dr. Ariel Stein is currently ARL Director and Acting Director of the Global Monitoring Laboratory. Dr. Stein has extensive experience working with atmospheric transport, dispersion, and photochemical models. Previously, Ariel was a Supervisory Physical Scientist before becoming Acting Deputy Director of NOAA’s Air Resources Laboratory. Ariel has an…

ARL Weekly News – November 5, 2021

ARL Weekly News – November 5, 2021 Previous Events COP26 Panel on Atmospheric Deposition Ariel Stein moderated a WMO panel on Saturday, November 6 during COP26, on Atmospheric Deposition: the Invisible Threat – Impacts on Agriculture, Ecosystems and Oceans,  hosted within the IPCC-WMO-UKMO Pavilion. Wet and dry deposition of atmospheric pollutants can have detrimental impacts…