Lawrence Livermore National Laboratory

LLNL/NARAC was a key participant in three ground-breaking urban field studies in collaboration with other national laboratories, federal agencies, commercial companies and the United Kingdom:

The studies have resulted in new physics understanding and improvements in computational models for complex urban flow and transport. NARAC has also used this data extensively to test and evaluate urban dispersion models (for example Urban Dispersion Modeling and Source Term Estimation).

Cover of BAMS article summarizing
the Urban 2000 field study.

CFD model simulation (color contours) compared with measurement data (colored squares) for Urban 2000 field study (Chan, 2004).

Location of the Joint Urban 2003 field study.