| |||||||||
|
Vancouver B.C., Ozone StudyPrincipal Investigator:
Background:During the fair weather conditions that lead to photochemical pollution episodes in Vancouver, B.C., and the Lower Fraser River Valley (LFV) nearby, thermally forced daytime upvalley flows carry pollutants northward into the many tributary valleys. These "finger-lake" valleys cut through the mountain range to the north of the LFV. At night thermally forced downvalley flows carry the polluted air out of the valleys and back into the LFV. Here, we study the chemistry and meteorological characteristics of the nocturnal flow out of one of the major tributary valleys, the valley of Pitt Lake, to investigate changes in the air mass occurring in the tributary valley.Sample FindingsReview Poster: Doppler Lidar Observations of Nocturnal Cleaning Flows from a Tributary Valley near Vancouver, B.C. .Some Observed Features:
Some Discoveries
References:Banta, R.M., P.B. Shepson, J.W. Bottenheim, K.G. Anlauf, H.A. Wiebe, A.J. Gallant, T. Biesenthal, L.D.Olivier, C.-J. Zhu,I.G. McKendry, and D.G. Steyn. "Nocturnal cleansing flows in a tributary valley." Atmospheric Environment, 31, 2147-2162 (1997). McKendry, I.G, D.G. Steyn, R.M. Hoff, W. Strapp, K. Anlauf, F. Froude, B.A. Martin, R.M. Banta, and L.D. Olivier. "Elevated pollution layers and vertical downmixing over the Lower Fraser Valley, B.C." Atmospheric Environment, 31, 2135-2146 (1997). Pottier, J.L., S. Pryor, and R.M. Banta. "Synoptic variability related to boundary layer and surface features observed during Pacific '93." Atmospheric Environment, 31, 2163-2173 (1997). McKendry, I.G, D.G. Steyn, R.M. Banta, W. Strapp, K. Anlauf, and J.L. Pottier. "Daytime air quality and local circulations in the Pitt Lake tributary valley, B.C." Journal of Applied Meteorology, 37, 393-404 (1998). Related TopicsTEA CO2 Doppler LidarTEA CO2 Projects | |||||
[an error occurred while processing this directive] |