Multi-scale modeling of urban atmospheres is one of the major frontiers of mathematical geosciences. The latest developments in high performance computing technologies represent an opportunity to advance high resolution simulations of urban atmospheric environments. Among the new capabilities required are improved physics based sub-grid parameterizations and one- or two-way nesting to integrate models of disparate scales. In the proposed work, detailed knowledge of fundamental physical processes and novel computational techniques will be used to develop multi-scale nested urban systems models to study the response of urban areas to changing climate. A range of scales, from climate to urban microscale in street canyons will be incorporated and some urban infrastructure elements, which have typically evaded in geosystems models hitherto, will be included. Analyses and simulations of emergent and other possible scenarios, using mathematical and complex multi-scale systems modeling, will be conducted for complex geosystems, thus enabling multi-disciplinary studies on how global change impacts sustainability of urban systems. In particular, the proposed work will: (i) integrate urbanized mesoscale modeling systems that are being developed at ASU [MM5-Urban (ASU)] and NCAR [advanced research version of the WRF mesoscale model] with global atmospheric and microscale models; (ii) improve physical parameterizations used in urbanized mesoscale models and educe emergent properties via simulations; (iii) develop parameterization of urban effects in global climate models, study the climate effects on urban areas as well as up-scale influences; and (iv) develop fast and scalable numerical algorithms and solvers for nested microscale/mesoscale simulations. Extensive heterogeneous data sets available from PIs prior field studies will be used to validate the models and for computational benchmarks. This project will involve a collaborative academic group consist of mathematicians and geoscientists and researchers from the National Center for Atmospheric Research (NCAR) Mesoscale and Microscale Meteorology Division. The two groups will collaborate in two key areas: development of coupled mesoscale (WRF, ASUUrban)/ microscale models with urban applications and providing multi-disciplinary training for graduate students and a postdoc working in computational geosciences.
|Effective start/end date||9/1/09 → 8/31/14|
- National Science Foundation (NSF): $774,986.00