TY  - JOUR
AU  - Johansson, Sören
AU  - Woiwode, Wolfgang
AU  - Höpfner, Michael
AU  - Friedl-Vallon, Felix
AU  - Kleinert, Anne
AU  - Kretschmer, Erik
AU  - Latzko, Thomas
AU  - Orphal, Johannes
AU  - Preusse, Peter
AU  - Ungermann, Jörn
AU  - Santee, Michelle L.
AU  - Jurkat-Witschas, Tina
AU  - Marsing, Andreas
AU  - Voigt, Christiane
AU  - Giez, Andreas
AU  - Krämer, Martina
AU  - Rolf, Christian
AU  - Zahn, Andreas
AU  - Engel, Andreas
AU  - Sinnhuber, Björn-Martin
AU  - Oelhaf, Hermann
TI  - Airborne limb-imaging measurements of temperature, HNO3, O3, ClONO2, H2O and CFC-12 during the Arctic winter 2015/2016: characterization, in situ validation and comparison to Aura/MLS
JO  - Atmospheric measurement techniques
VL  - 11
IS  - 8
SN  - 1867-8548
CY  - Katlenburg-Lindau
PB  - Copernicus
M1  - FZJ-2018-05406
SP  - 4737 - 4756
PY  - 2018
AB  - The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) was operated on board the German High Altitude and Long Range Research Aircraft (HALO) during the PGS (POLSTRACC/GW-LCYCLE/SALSA) aircraft campaigns in the Arctic winter 2015/2016. Research flights were conducted from 17 December 2015 until 18 March 2016 within 25–87°N, 80°W–30°E. From the GLORIA infrared limb-emission measurements, two-dimensional cross sections of temperature, HNO3, O3, ClONO2, H2O and CFC-12 are retrieved. During 15 scientific flights of the PGS campaigns the GLORIA instrument measured more than 15000 atmospheric profiles at high spectral resolution. Dependent on flight altitude and tropospheric cloud cover, the profiles retrieved from the measurements typically range between 5 and 14km, and vertical resolutions between 400 and 1000m are achieved. The estimated total (random and systematic) 1σ errors are in the range of 1 to 2K for temperature and 10% to 20% relative error for the discussed trace gases. Comparisons to in situ instruments deployed on board HALO have been performed. Over all flights of this campaign the median differences and median absolute deviations between in situ and GLORIA observations are −0.75 K ± 0.88K for temperature, −0.03 ppbv ± 0.85ppbv for HNO3, −3.5 ppbv ± 116.8ppbv for O3, −15.4 pptv ± 102.8pptv for ClONO2, −0.13 ppmv ± 0.63ppmv for H2O and −19.8 pptv ± 46.9pptv for CFC-12. Seventy-three percent of these differences are within twice the combined estimated errors of the cross-compared instruments. Events with larger deviations are explained by atmospheric variability and different sampling characteristics of the instruments. Additionally, comparisons of GLORIA HNO3 and O3 with measurements of the Aura Microwave Limb Sounder (MLS) instrument show highly consistent structures in trace gas distributions and illustrate the potential of the high-spectral-resolution limb-imaging GLORIA observations for resolving narrow mesoscale structures in the upper troposphere and lower stratosphere (UTLS).
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000441635900001
DO  - DOI:10.5194/amt-11-4737-2018
UR  - https://juser.fz-juelich.de/record/852460
ER  -