J
Jörg Heland
Researcher at Fraunhofer Society
Publications - 12
Citations - 603
Jörg Heland is an academic researcher from Fraunhofer Society. The author has contributed to research in topics: Radiative transfer & Trace gas. The author has an hindex of 9, co-authored 12 publications receiving 562 citations. Previous affiliations of Jörg Heland include University of Wuppertal.
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Journal ArticleDOI
A new instrument to measure gaseous nitrous acid (HONO) in the atmosphere.
TL;DR: A new in situ instrument (LOPAP: long path absorption photometer) to measure gaseous nitrous acid (HONO) using wet chemical sampling and photometric detection has been developed to overcome the known problems with current HONO measurement techniques.
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Nonintrusive optical measurements of aircraft engine exhaust emissions and comparison with standard intrusive techniques.
Klaus Schäfer,Jörg Heland,Dave H. Lister,Christopher W. Wilson,Roger J. Howes,Robert S. Falk,Erwin Lindermeir,Manfred Birk,Georg Wagner,Peter Haschberger,Marc Bernard,Olivier Legras,Peter Wiesen,Ralf Kurtenbach,Klaus J. Brockmann,Volker Kriesche,Moira Hilton,Gary Bishop,Roy Graham Clarke,John Workman,Michael J. Caola,Rachel Mary Geatches,R. Burrows,John D. Black,Philippe Herve,Johanna Vally +25 more
TL;DR: Nonintrusive systems for the measurement on test rigs of aeroengine exhaust emissions required for engine certification, together with CO(2), CO, and NO data showed agreement with intrusive techniques of approximately ?
Journal ArticleDOI
Mobile Fourier-transform infrared spectroscopy monitoring of air pollution
TL;DR: The on-line multicomponent analysis software is based on line-by-line retrieval and least-squares fitting procedures, including the effects of multiple aerosol scattering and cloud and rain influences.
Journal ArticleDOI
Analysis of aircraft exhausts with Fourier-transform infrared emission spectroscopy
Jörg Heland,Klaus Schäfer +1 more
TL;DR: F Fourier-transform infrared emission spectroscopy as a remote-sensing multi-component-analyzing technique for aircraft exhausts was investigated at ground level with a double pendulum interferometer and a line-by-line computer algorithm that was applied to a multilayer radiative transfer problem.
Journal ArticleDOI
Determination of major combustion products in aircraft exhausts by FTIR emission spectroscopy
Jörg Heland,Klaus Schäfer +1 more
TL;DR: In this article, the results of ground-based FTIR emission measurements of major combustion products such as CO2, H2O, CO, NO, and N2O of in-service aircraft engines are reported and compared to values published in recent literature.