HYSPLIT 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…
Initializing HYSPLIT with Satellite Observations of Volcanic Ash ARL is investigating the use of satellite information about volcanic ash clouds to improve volcanic ash forecasts made with HYSPLIT. Some of this work has been described in a paper in the Journal of Geophysical Research – Atmospheres: Crawford, B. J. B. Stunder, F. Ngan, M. J.…
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. What We Do…
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…
Ariel Stein appointed to serve on the National Volcano Early Warning System Advisory Committee ARL Director Ariel Stein was appointed by the Secretary of Interior to a two-year term to serve on the National Volcano Early Warning System Advisory Committee (NVEWSAC). As part of this committee, he will help the Secretary with the implementation of…
Air Resources Laboratory Celebrates 75th Anniversary at AMS January 25, 2024 As an opening to the 75th anniversary celebrations, ARL is hosting sessions at AMS in Baltimore on Wednesday, January 31, 2024. Director, Dr. Ariel Stein, and Deputy Director, Dr. LaToya Myles will chair three sessions on the history, current and future research, and partnerships…
ARL Weekly News – December 8, 2023 Recent Events ARL Attends AGU23 Meeting Presentations on arctic amplification of climate change, air quality, and western hydrology during a season of intense atmospheric rivers are just a few of the topics covered by ARL research at the 2023 AGU annual meeting held December 111-15, 20223. The AGU23…
ARL Weekly News – October 13, 2023 Recent Events NOAA Greenhouse Gas (GHG) Workshop The report from the NOAA Greenhouse Gas (GHG) Workshop has been released. The report titled: NOAA’s Greenhouse Gas Capabilities and Products outlines the event’s summary that was co-organized by GML, ARL and CPO. The workshop brought together representatives from across line…
ARL Weekly News – September 29, 2023 Upcoming Events. Presentations and Conferences: Atmospheric Dispersion Modelling Liaison Committee. On October 4th, Nebila Lichiheb is an invited speaker for the Atmospheric Dispersion Modelling Liaison Committee. The ADMLC seminar is sponsored by the UK Health Security Agency, Harwell (near Oxford). The topic of the presentation is: Processes of…
ARL Weekly News – February 17, 2023 Recent Activities Presentation to Howard Univ. on GHG Monitoring project. Xinrong Ren was invited by Dr. Sen Chiao at Howard University to give a department seminar on the work of the GHG monitoring team. This presentation titled “Measurements of Air Pollution and Greenhouse Gases in the Mid-Atlantic Region”,…