Water vapour profiles from Raman lidar automatically calibrated by microwave radiometer data during HOPE
Item
Title (Dublin Core)
Water vapour profiles from Raman lidar automatically calibrated by microwave radiometer data during HOPE
Description (Dublin Core)
In this paper, we present a method to derive water vapour profiles from Raman lidar measurements calibrated by the integrated water vapour (IWV) from a collocated microwave radiometer during the intense observation campaign HOPE in the frame of the HD(CP)<sup>2</sup> initiative. The simultaneous observation of a microwave radiometer and a Raman lidar allowed an operational and continuous measurement of water vapour profiles also during cloudy conditions. The calibration method provides results which are in a good agreement with conventional methods based on radiosondes. The calibration factor derived from the proposed IWV method is very stable with a relative uncertainty of 5 %. This stability allows for the calibration of the lidar even in the presence of clouds using the calibration factor determined during the most recent clear sky interval. Based on the application of this approach, it is possible to retrieve water vapour profiles during all non-precipitating conditions. A statistical analysis shows a good agreement between the lidar measurements and collocated radiosondes. The relative biases amount to less than 6.7 % below 2 km.
Creator (Dublin Core)
Foth, A.
Baars, H.
Di Girolamo, P.
Pospichal, B.
Date (Dublin Core)
2018-10-23
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-15-7753-2015
https://acp.copernicus.org/articles/15/7753/2015/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
