Zobrazeno 1 - 10
of 1 785
pro vyhledávání: '"P. Scheidegger"'
Autor:
M. Graf, P. Scheidegger, A. Kupferschmid, H. Looser, T. Peter, R. Dirksen, L. Emmenegger, B. Tuzson
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 1365-1378 (2021)
We describe the development, characterization, and first field deployments of a quantum cascade laser direct absorption spectrometer (QCLAS) for water vapor measurements in the upper troposphere and lower stratosphere (UTLS). The instrument is suffic
Externí odkaz:
https://doaj.org/article/f0f3b833c30f47378581fe8587eb6035
Autor:
B. Bereiter, B. Tuzson, P. Scheidegger, A. Kupferschmid, H. Looser, L. Mächler, D. Baggenstos, J. Schmitt, H. Fischer, L. Emmenegger
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 6391-6406 (2020)
The record of past greenhouse gas composition from ice cores is crucial for our understanding of global climate change. Future ice core projects will aim to extend both the temporal coverage (extending the timescale to 1.5 Myr) and the temporal res
Externí odkaz:
https://doaj.org/article/bb62f602c22a4cf69c3a0c937eacdf2c
Autor:
B. Tuzson, M. Graf, J. Ravelid, P. Scheidegger, A. Kupferschmid, H. Looser, R. P. Morales, L. Emmenegger
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 4715-4726 (2020)
A compact and lightweight mid-infrared laser absorption spectrometer has been developed as a mobile sensing platform for high-precision atmospheric methane measurements aboard small unmanned aerial vehicles (UAVs). The instrument leverages two recent
Externí odkaz:
https://doaj.org/article/86eb799947634e2b95e8308d162e1a0c
Autor:
Bell, Brian, Geyer, Michael, Glickenstein, David, Hamm, Keaton, Scheidegger, Carlos, Fernandez, Amanda, Moore, Juston
There are a number of hypotheses underlying the existence of adversarial examples for classification problems. These include the high-dimensionality of the data, high codimension in the ambient space of the data manifolds of interest, and that the st
Externí odkaz:
http://arxiv.org/abs/2404.08069
Autor:
P. M. Hundt, M. Müller, M. Mangold, B. Tuzson, P. Scheidegger, H. Looser, C. Hüglin, L. Emmenegger
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 2669-2681 (2018)
Detailed knowledge about the urban NO2 concentration field is a key element for obtaining accurate pollution maps and individual exposure estimates. These are required for improving the understanding of the impact of ambient NO2 on human health an
Externí odkaz:
https://doaj.org/article/b0adb5268bd545378a5d8ea0d0f241c1
Coherent superposition of electronic states, created by ionizing a molecule, can initiate ultrafast dynamics of the electron density. Correlation between nuclear and electron motions, however, typically dissipates the electronic coherence in only a f
Externí odkaz:
http://arxiv.org/abs/2401.01999
Many high-dimensional data sets suffer from hidden confounding which affects both the predictors and the response of interest. In such situations, standard regression methods or algorithms lead to biased estimates. This paper substantially extends pr
Externí odkaz:
http://arxiv.org/abs/2312.02860
Neural Image Classifiers are effective but inherently hard to interpret and susceptible to adversarial attacks. Solutions to both problems exist, among others, in the form of counterfactual examples generation to enhance explainability or adversarial
Externí odkaz:
http://arxiv.org/abs/2310.00761
We present a method to precisly measure the frequencies of transitions to high-$n$ Rydberg states of the hydrogen atom which are not subject to uncontrolled systematic shifts caused by stray electric fields. The method consists in recording Stark spe
Externí odkaz:
http://arxiv.org/abs/2309.12721
Skimmed supersonic beams provide intense, cold, collision-free samples of atoms and molecules are one of the most widely used tools in atomic and molecular laser spectroscopy. High-resolution optical spectra are typically recorded in a perpendicular
Externí odkaz:
http://arxiv.org/abs/2308.08329