Movie: Ozone model transport simulation and data for the NE US


This is a comparison of measured ozone in the Northeast (right), with back-trajectories (bottom left) and simulated ozone precursor concentrations (top left), during 6/12-6/18, 1992. The bottom right time chart shows the ozone pattern at Whiteface Mtn, NY (solid line) and at an adjacent low elevation site. The model is the same as in Ozone transport simulation using the CAPITA Monte Carlo model , while the monitoring data are extracted from AIRS.


The goal of the multi-view animation is to simultaneously present ozone and airmass history data during an ozone episode in New England. The airmass histories are to provide meteorological context to the interpretation of the ozone data.


The ozone data (right figure) were taken from the hourly ozone data stored in the AIRS database. The methodology for the model simulation of ozone transport is discussed in the description of the movie Ozone transport simulation using the CAPITA Monte Carlo model . The back trajectories were calculated using the CAPITA Monte Carlo model, and the Eulerian wind fields generated from the National Meteorological Centers Nested Grid Model, with 180 km resolution. Ten particles were released from each site at two hour time increments and tracked backwards for five days.


During the low ozone concentrations at Whiteface Mtn, NY (June 12 and 15) the back trajectories clearly indicate Canadian airmasses from the Northwest. On June 13, 14 the airmasses with higher ozone levels passed through the industrial Midwest.

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