Observation of pollution plume capping by a tropopause fold

Autor:	John Y. N. Cho, Marta A. Fenn, Reginald E. Newell, William B. Grant, Edward V. Browell, Carolyn F. Butler
Rok vydání:	2001
Předmět:	Troposphere Boundary layer Geophysics Potential vorticity Ozone layer Panache General Earth and Planetary Sciences Environmental science Tropopause Atmospheric sciences Stratosphere Plume
Zdroj:	Geophysical Research Letters. 28:3243-3246
ISSN:	0094-8276
DOI:	10.1029/2001gl012898
Popis:	Airborne lidar measurements reveal a case in which a layer of high-ozone air extruding from a tropopause fold appears to cap a pollution plume and force it to spread out in the lower troposphere. The morphology of the high-ozone layer resembles a three-dimensional model of tropopause fold evolution that produces a low-altitude potential vorticity tube. This is a mechanism that can complete the irreversible transfer of air from the stratosphere, and can also affect pollution levels at the surface if the capping layer reaches the top of the boundary layer.
Databáze:	OpenAIRE
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