TY  - JOUR
AU  - Javed, Umar
AU  - Kubistin, Dagmar
AU  - Martinez, Monica
AU  - Pollmann, Jan
AU  - Rudolf, Markus
AU  - Parchatka, Uwe
AU  - Reiffs, Andreas
AU  - Thieser, Jim
AU  - Schuster, Gerhard
AU  - Horbanski, Martin
AU  - Pöhler, Denis
AU  - Crowley, John N.
AU  - Fischer, Horst
AU  - Lelieveld, Jos
AU  - Harder, Hartwig
TI  - Laser induced fluorescence based detection of atmospheric nitrogen dioxide and comparison of different techniques during the PARADE 2011 field campaign
JO  - Atmospheric measurement techniques discussions
VL  - 204
SN  - 1867-8610
CY  - Katlenburg-Lindau
PB  - Copernicus
M1  - FZJ-2018-06693
SP  - 1 - 29
PY  - 2018
AB  - GANDALF (Gas Analyzer for Nitrogen Dioxide Applying Laser-induced Fluorescence), a new instrument for the detection of nitrogen dioxide based on the laser-induced fluorescence (LIF) technique, is presented in this paper. GANDALF is designed for ground based and air-borne deployment with a robust calibration system. In the current setup, it uses a multi-mode diode laser (447–450nm) and performs in situ, continuous, and autonomous measurements with a laser pulse repetition rate of 5MHz. The performance of GANDALF was tested during the field experiment at a forested location with urban influence where NOx levels were between 0.12 and 22 parts per billion by volume (ppbv). Based on the field results, the limit of detection is estimated at 5–10 parts per trillion by volume (pptv) in 60s at a signal to noise ratio (SNR) of 2. The overall accuracy and precision of the instrument are better than 5% (1σ) and 0.5%+3pptv (1σmin−1), respectively. A comparison of nitrogen dioxide measurements based on several techniques during the field campaign is presented to explore methodic differences.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.5194/amt-2018-204
UR  - https://juser.fz-juelich.de/record/857725
ER  -