Atmospheric chemistry studies with the NMMB/BSC-CTM model at the Barcelona Supercomputing Center

Oriol Jorba
Barcelona Supercomputing Center
2:30 pm October 16 in Room 2155

The Barcelona Supercomputing Center (BSC) does research on atmospheric chemistry, mineral dust transport and air quality. The center is working on the development of a chemical weather forecasting system based on the NCEP/NMMB multiscale meteorological model, namely NMMB/BSC Chemical Transport Model (NMMB/BSC-CTM). A gas-phase chemistry module and a multi-component aerosol scheme have been coupled online with NMMB.

This talk will overview the status of development of the system, the efforts done on the evaluation of the different modules (gas and aerosol components mineral dust, black carbon, organic matter, sulfate and volcanic ash), and its application as a research forecast tool. The system is being enhanced with a data assimilation system of satellite products of aerosol optical depth. Initial efforts are focused on mineral dust only. An ensemble Kalman filter technique (namely the Local Ensemble Transform Kalman Filter - LETKF) has been utilized to statistically combine model background and satellite retrievals. Currently, NMMB/BSC-CTM is providing mineral dust forecasts with its regional configuration for the Barcelona Dust Forecast Center (BDFC) and the Northern Africa-Middle East-Europe (NA-ME-E) Node of the Sand and Dust Strom Warning Advisory and Assessment System (SDS-WAS) of the World Meteorological Organization (WMO).

All this work is done in the framework of Spanish national research projects (Sever-Ochoa program of the Government of Spain and national projects of the Ministry of Economy and Competitiveness).