S
Samuel Hammer
Researcher at Heidelberg University
Publications - 49
Citations - 2202
Samuel Hammer is an academic researcher from Heidelberg University. The author has contributed to research in topics: Greenhouse gas & Analyser. The author has an hindex of 22, co-authored 47 publications receiving 1826 citations. Previous affiliations of Samuel Hammer include Icos.
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Journal ArticleDOI
A new estimation of the recent tropospheric molecular hydrogen budget using atmospheric observations and variational inversion
C. Yver,Isabelle Pison,Audrey Fortems-Cheiney,Martina Schmidt,Frédéric Chevallier,Michel Ramonet,Armin Jordan,O. A. Søvde,Andreas Engel,Rebecca Fisher,David Lowry,Euan G. Nisbet,Ingeborg Levin,Samuel Hammer,Jaroslaw Necki,Jakub Bartyzel,Stefan Reimann,Martin K. Vollmer,Martin Steinbacher,Tuula Aalto,Michela Maione,Jgor Arduini,Simon O'Doherty,Aoife Grant,William T. Sturges,G. Forster,Chris Rene Lunder,Viacheslav Privalov,Nina N. Paramonova,Anja Werner,Philippe Bousquet +30 more
TL;DR: In this article, a variational inversion scheme is combined with observations from the RAMCES and EUROHYDROS atmospheric networks, which include continuous measurements performed between mid-2006 and mid-2009.
Journal ArticleDOI
Long open-path measurements of greenhouse gases in air using near-infrared Fourier transform spectroscopy
David W. T. Griffith,Denis Pöhler,Stefan Schmitt,Samuel Hammer,Sanam Noreen Vardag,Ulrich Platt +5 more
TL;DR: In this article, the authors presented the first open-path near-infrared FTS measurements of CO2, CH4, O2, H2O and HDO over a 1.5 km path in urban Heidelberg, Germany.
Journal ArticleDOI
Regional non-CO2 greenhouse gas fluxes inferred from atmospheric measurements in Ontario, Canada
Felix Vogel,Misa Ishizawa,Elton Chan,Douglas Chan,Samuel Hammer,Ingeborg Levin,Douglas E. J. Worthy +6 more
TL;DR: In this article, the Radon tracer method (RTM) was used to quantitatively retrieve regional GHG fluxes using in-situ observations in Egbert, Canada, from 2006 to 2009 for the RTM.
Posted ContentDOI
A Fourier transform infrared trace gas analyser for atmospheric applications
David W. T. Griffith,Nicholas M. Deutscher,Christopher Caldow,Graham Kettlewell,M. Riggenbach,Samuel Hammer +5 more
TL;DR: In this article, the authors present the optimisation of a commercial FTIR spectrometer for the analysis of trace gas mixing ratios (CO2, CH4, CO, N2O) and their isotopic composition (d13C-CO 2, dD-H2O, d15N-N2O).
Journal ArticleDOI
Evaluation of 4 years of continuous δ 13 C(CO 2 ) data using a moving Keeling plot method
TL;DR: In this article, the authors present a method to compute the CO2 source signature (δS) continuously and evaluate their result using model data from the Stochastic Time-Inverted Lagrangian Transport model.