Climatology of the upper troposphere with lidar

Philippe Keckhut; Gerard Ancellet; Leah Goldfarb; Alain Hauchecorne; Emmanuel Riedinger; Jean-Luc Baray; Bertrand Cadet; Jean Leveau; Tantely Randriambelo; Anne Rechou; Laurent Robert

doi:10.1117/12.466505

21 March 2003 Climatology of the upper troposphere with lidar

Philippe Keckhut, Gerard Ancellet, Leah Goldfarb, Alain Hauchecorne, Emmanuel Riedinger, Jean-Luc Baray, Bertrand Cadet, Jean Leveau, Tantely Randriambelo, Anne Rechou, Laurent Robert

Author Affiliations +

Proceedings Volume 4893, Lidar Remote Sensing for Industry and Environment Monitoring III; (2003) https://doi.org/10.1117/12.466505
Event: Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2002, Hangzhou, China

Abstract

The upper troposphere should play an important role on the climate. Several greenhouse gazes as well as cirrus clouds present in this region a large variability in both temporal and spatial scales. This variability is strongly connected with processes and air mass exchanges with the lower altitude as well as the stratosphere. The upper troposphere is not easy to probe nor from space nor from the ground. Lidar appears to be a good candidate for probing the upper troposphere. Ozone, water vapor, cirrus clouds, and temperature can be measure with lidar. All those measurements have been deployed in two sites. One is located in south of France at mid-latitude of the Northern Hemisphere and the other at the tropical site of the Southern Hemisphere: La Reunion. The technology has been improved to make such reliable measurements on a routine basis and to implement those measurements on a single lidar. Due to the episodic nature of the variability (in comparison with wave type variability), some questions about lidar signal integration need to be addressed. First climatologies of each parameter independently have been already obtained. Future strategy will be discussed.

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Philippe Keckhut, Gerard Ancellet, Leah Goldfarb, Alain Hauchecorne, Emmanuel Riedinger, Jean-Luc Baray, Bertrand Cadet, Jean Leveau, Tantely Randriambelo, Anne Rechou, and Laurent Robert "Climatology of the upper troposphere with lidar", Proc. SPIE 4893, Lidar Remote Sensing for Industry and Environment Monitoring III, (21 March 2003); https://doi.org/10.1117/12.466505

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KEYWORDS

LIDAR

Climatology

Troposphere

Clouds

Ozone

Raman spectroscopy

Aerosols

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