# Open Access

 2018-09-1915:29 [FZJ-2018-05410] Journal Article et al Ice particle properties of Arctic cirrus Ice particle and cloud properties such as particle size, particle shape and number concentration influence the net radiation effect of cirrus clouds. Measurements of these features are of great interest for the improvement of weather and climate models, especially for the Arctic region. [...] OpenAccess: PDF PDF (PDFA); 2018-09-1915:24 [FZJ-2018-05409] Journal Article et al Aircraft-based observations of isoprene epoxydiol-derived secondary organic aerosol (IEPOX-SOA) in the tropical upper troposphere over the Amazon region During the ACRIDICON-CHUVA field project (September–October 2014; based in Manaus, Brazil) aircraft-based in-situ measurements of aerosol chemical composition were conducted in the tropical troposphere over the Amazon using the High Altitude and Long Range Research Aircraft (HALO), covering altitudes from the boundary layer height up to 14.4km. The submicron non-refractory aerosol was characterized by flash-vaporization/electron impact-ionization aerosol particle mass spectrometry. [...] OpenAccess: PDF PDF (PDFA); 2018-09-1915:09 [FZJ-2018-05408] Journal Article et al Evaluation of the IAGOS-Core GHG package H$_{2}$O measurements during the DENCHAR airborne inter-comparison campaign in 2011 Atmospheric measurement techniques 11(9), 5279 - 5297 (2018) [10.5194/amt-11-5279-2018] As part of the DENCHAR (Development and Evaluation of Novel Compact Hygrometer for Airborne Research) inter-comparison campaign in northern Germany in 2011, a commercial cavity ring-down spectroscopy (CRDS) based gas analyzer (G2401-m, Picarro Inc., US) was installed on a Learjet to measure atmospheric water vapor, CO2, CH4, and CO. The CRDS components were identical to those chosen for integration aboard commercial airliners within the IAGOS (In-service Aircraft for a Global Observing System) project. [...] OpenAccess: PDF PDF (PDFA); 2018-09-1915:04 [FZJ-2018-05407] Journal Article et al Evaluation of the IAGOS-Core GHG Package H2O measurements during the DENCHAR airborne inter-comparison campaign in 2011 OpenAccess: PDF PDF (PDFA); 2018-09-1914:55 [FZJ-2018-05406] Journal Article et al 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 Atmospheric measurement techniques 11(8), 4737 - 4756 (2018) [10.5194/amt-11-4737-2018] 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. [...] OpenAccess: PDF PDF (PDFA); 2018-09-1914:17 2018-09-1913:02 [FZJ-2018-05403] Journal Article et al Ice particle sampling from aircraft – influence of the probing position on the ice water content Atmospheric measurement techniques 11(7), 4015 - 4031 (2018) [10.5194/amt-11-4015-2018] The ice water content (IWC) of cirrus clouds is an essential parameter determining their radiative properties and thus is important for climate simulations. Therefore, for a reliable measurement of IWC on board research aircraft, it is important to carefully design the ice crystal sampling and measuring devices. [...] OpenAccess: PDF PDF (PDFA); 2018-09-1911:46 [FZJ-2018-05401] Journal Article et al Ice particle sampling from aircraft – influence of the probing position on the ice water content OpenAccess: PDF PDF (PDFA); 2018-09-1911:05 [FZJ-2018-05398] Journal Article et al Simple versus complex physical representation of the radiative forcing from linear contrails; A sensitivity analysis Journal of geophysical research / Atmospheres 123(5), 2831-2840 (2018) [10.1002/2017JD027861] An off‐line complex representation of the radiative forcing of linear contrails is applied for the first time to monthly mean 3‐D distributions. This representation assumes the same temperature‐dependent, spatially and time‐varying functions of ice water content and particle size for contrails as for natural cirrus [...] OpenAccess: PDF PDF (PDFA); 2018-09-1910:02 [FZJ-2018-05397] Lecture (After Call) et al Hands-on Practical Hybrid Parallel Application Performance Engineering Lecture at ISC High Performance '18 (Frankfurt/Main, Germany), 24 Jun 2018 - 28 Jun 2018 This tutorial presents state-of-the-art performance tools for leading-edge HPC systems founded on the community-developed Score-P instrumentation and measurement infrastructure, demonstrating how they can be used for performance engineering of effective scientific applications based on standard MPI, OpenMP, hybrid combination of both, and increasingly common usage of accelerators. Parallel performance tools from the Virtual Institute – High Productivity Supercomputing (VI-HPS) are introduced and featured in hands-on exercises with Score-P, Scalasca, Vampir, and TAU. [...] OpenAccess: PDF PDF (PDFA);