An Investigation of Flow Regimes Affecting the Mexico City Region

Autor:	James E. Bossert
Rok vydání:	1997
Předmět:	Atmospheric Science geography Plateau geography.geographical_feature_category Meteorology Atmospheric circulation Mesoscale meteorology Structural basin law.invention law Climatology Regional Atmospheric Modeling System Radiosonde Air quality index Geology Air mass
Zdroj:	Journal of Applied Meteorology. 36:119-140
ISSN:	1520-0450 0894-8763
Popis:	The Regional Atmospheric Modeling System (RAMS) is used to investigate the detailed mesoscale flow structure over the Mexico City region for a 3-day period in February 1991. The model simulation is compared with rawinsonde and tethersonde profile data and measurements from two surface stations in the southwestern part of Mexico City. The model results show that downward momentum transfer from aloft increases southerly winds near the surface on the first case day, effectively sweeping pollution from the basin surrounding Mexico City. Thermally driven circulations within the basin, in adjacent valleys, and over the slope of the Mexican Plateau strongly influence winds within the Mexico City basin on the second case day. These wind systems produce a complex interaction of flows, culminating in the propagation of a 1-km-deep density current circulation through Mexico City that displaces the polluted basin air mass aloft. Regional northeasterly flows develop early in the morning of the third case day ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e8aec473404ab75d3a09516cd1b1d1cf https://doi.org/10.1175/1520-0450(1997)036<0119:aiofra>2.0.co Zobrazit plný text záznamu