Pure rotational-Raman channels of the Esrange lidar for temperature and particle extinction measurements in the troposphere and lower stratosphere
Open Access
- 11 January 2013
- journal article
- research article
- Published by Copernicus GmbH in Atmospheric Chemistry and Physics
- Vol. 6 (1), 91-98
- https://doi.org/10.5194/amt-6-91-2013
Abstract
The Department of Meteorology at Stockholm University operates the Esrange Rayleigh/Raman lidar at Esrange (68° N, 21° E) near the Swedish city of Kiruna. This paper describes the design and first measurements of the new pure rotational-Raman channel of the Esrange lidar. The Esrange lidar uses a pulsed Nd:YAG solid-state laser operating at 532 nm as light source with a repetition rate of 20 Hz and a pulse energy of 350 mJ. The minimum vertical resolution is 150 m and the integration time for one profile is 5000 shots. The newly implemented channel allows for measurements of atmospheric temperature at altitudes below 35 km and is currently optimized for temperature measurements between 180 and 200 K. This corresponds to conditions in the lower Arctic stratosphere during winter. In addition to the temperature measurements, the aerosol extinction coefficient and the aerosol backscatter coefficient at 532 nm can be measured independently. Our filter-based design minimizes the systematic error in the obtained temperature profile to less than 0.51 K. By combining rotational-Raman measurements (5–35 km height) and the integration technique (30–80 km height), the Esrange lidar is now capable of measuring atmospheric temperature profiles from the upper troposphere up to the mesosphere. With the improved setup, the system can be used to validate current lidar-based polar stratospheric cloud classification schemes. The new capability of the instrument measuring temperature and aerosol extinction furthermore enables studies of the thermal structure and variability of the upper troposphere/lower stratosphere. Although several lidars are operated at polar latitudes, there are few instruments that are capable of measuring temperature profiles in the troposphere, stratosphere, and mesosphere, as well as aerosols extinction in the troposphere and lower stratosphere with daylight capability.This publication has 25 references indexed in Scilit:
- On the linkage between tropospheric and Polar Stratospheric clouds in the Arctic as observed by space–borne lidarAtmospheric Chemistry and Physics, 2012
- Cirrus optical depth and lidar ratio retrieval from combined CALIPSO‐CloudSat observations using ocean surface echoJournal of Geophysical Research: Atmospheres, 2012
- Investigation of polar stratospheric clouds in January 2008 by means of ground-based and spaceborne lidar measurements and microphysical box model simulationsJournal of Geophysical Research: Atmospheres, 2011
- Microphysical properties of Antarctic polar stratospheric clouds and their dependence on tropospheric cloud systemsJournal of Geophysical Research: Atmospheres, 2010
- Detection of temperatures conducive to Arctic polar stratospheric clouds using CHAMP and SAC‐C radio occultation dataJournal of Geophysical Research, 2009
- Temperature Measurements with LidarPublished by Springer Science and Business Media LLC ,2006
- The Bonn University lidar at the Esrange: technical description and capabilities for atmospheric researchAnnales Geophysicae, 2005
- Stratospheric temperature monitoring using a vibrational Raman lidar : Part 1: aerosols and ozone interferencesJournal of Environmental Monitoring, 2005
- LidarPublished by Springer Science and Business Media LLC ,2005
- LIDAR monitoring of the temperature in the middle and lower atmosphereApplied Physics B Laser and Optics, 1992