Continuous Lidar Monitoring of Polar Stratospheric Clouds at the South Pole

Continuous Lidar Monitoring of Polar Stratospheric Clouds at the South Pole IN BOX INSIGHTS and INNOVATIONS Continuous Lidar Monitoring of Polar Stratospheric Clouds at the South Pole BY JAME S R . CAMPBELL, ELLSWORT H J . WELTON , AN D JAME S D . SPINHIRNE olar stratospheric clouds (PSC) play a primary 18.0 k m above mea n sea level (MSL) in air surrounding role in the formation of annua l "ozone holes" over the South Pole by mid-June each season. In the absence PAntarctica during the austral sunrise. Meridional of nitrates, it is only with the overturning of th e polar temperatur e gradients in the lower stratosphere and vortex in spring that catalytic processes cease and e concentrations are replenished throug h airmass upper troposphere, caused by strong radiative cool- ozon ing, induce a broa d dynami c vortex centered near the exchange with the lower latitudes. South Pole that decouples and insulates the winter Despite a generic understanding of the "ozone polar airmass. PSC nucleate an d grow as vorte x tem- hole" paradigm , man y key component s of th e system, peratures gradually fall belo w equilibriu m saturation such as cloud occurrence, phase, and composition; an d frost points for ambient sulfate, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of the American Meteorological Society American Meteorological Society

Continuous Lidar Monitoring of Polar Stratospheric Clouds at the South Pole

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Publisher
American Meteorological Society
Copyright
Copyright © American Meteorological Society
ISSN
1520-0477
D.O.I.
10.1175/2008BAMS2754.1
Publisher site
See Article on Publisher Site

Abstract

IN BOX INSIGHTS and INNOVATIONS Continuous Lidar Monitoring of Polar Stratospheric Clouds at the South Pole BY JAME S R . CAMPBELL, ELLSWORT H J . WELTON , AN D JAME S D . SPINHIRNE olar stratospheric clouds (PSC) play a primary 18.0 k m above mea n sea level (MSL) in air surrounding role in the formation of annua l "ozone holes" over the South Pole by mid-June each season. In the absence PAntarctica during the austral sunrise. Meridional of nitrates, it is only with the overturning of th e polar temperatur e gradients in the lower stratosphere and vortex in spring that catalytic processes cease and e concentrations are replenished throug h airmass upper troposphere, caused by strong radiative cool- ozon ing, induce a broa d dynami c vortex centered near the exchange with the lower latitudes. South Pole that decouples and insulates the winter Despite a generic understanding of the "ozone polar airmass. PSC nucleate an d grow as vorte x tem- hole" paradigm , man y key component s of th e system, peratures gradually fall belo w equilibriu m saturation such as cloud occurrence, phase, and composition; an d frost points for ambient sulfate,

Journal

Bulletin of the American Meteorological SocietyAmerican Meteorological Society

Published: May 1, 2009

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