AI Article Synopsis
- The LEANDRE II airborne lidar system has been used to measure the water-vapor mixing ratio in the lower troposphere (0-3.5 km) aboard the French Atmospheric Research Aircraft.
- The paper outlines the methodology for retrieving these measurements and evaluates both systematic and random errors related to the instrument's design and performance.
- Test flights reveal that measurement errors are relatively low, with standard deviations between 0.05 g kg(-1) at higher altitudes and 0.3-0.4 g kg(-1) near the ground, aligning with expected variability when compared to traditional dew-point hygrometer readings.
Article Abstract
The airborne lidar LEANDRE II, described in part I [Appl. Opt. 40, 3450-3461 (2001)], has been flown on the French Atmospheric Research Aircraft to perform lower-troposphere (0-3.5-km) measurements of the water-vapor mixing ratio. We present and discuss the method used for retrieval of the water-vapor mixing ratio and analyze systematic and random measurement errors in relation to instrument design and performance. The results of a series of test flights are presented. With a 0.8-km horizontal resolution and a 300-m vertical resolution, the standard deviation of the measurement error ranges from approximately 0.05 g kg(-1) at 3.5 km to 0.3-0.4 g kg(-1) near the ground, in agreement with the predicted random error. Comparisons with dew-point hygrometer measurements show a vertically averaged difference of ?0.15 g kg(-1), approximately equal to the observed water-vapor variability.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/ao.40.003462 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!