Zobrazeno 1 - 10
of 42
pro vyhledávání: '"U. Schuman"'
Autor:
T. Harlass, R. Dischl, S. Kaufmann, R. Märkl, D. Sauer, M. Scheibe, P. Stock, T. Bräuer, A. Dörnbrack, A. Roiger, H. Schlager, U. Schumann, M. Pühl, T. Schripp, T. Grein, L. Bondorf, C. Renard, M. Gauthier, M. Johnson, D. Luff, P. Madden, P. Swann, D. Ahrens, R. Sallinen, C. Voigt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 11807-11822 (2024)
Nitrogen oxides, emitted from air traffic, are of concern due to their impact on climate by changing atmospheric ozone and methane levels. Using the DLR research aircraft Falcon, total reactive nitrogen (NOy) in-flight measurements were carried out a
Externí odkaz:
https://doaj.org/article/520a40620eab423da5a7d369df6f7ac4
Measurements of particle emissions of an A350-941 burning 100 % sustainable aviation fuels in cruise
Autor:
R. Dischl, D. Sauer, C. Voigt, T. Harlaß, F. Sakellariou, R. Märkl, U. Schumann, M. Scheibe, S. Kaufmann, A. Roiger, A. Dörnbrack, C. Renard, M. Gauthier, P. Swann, P. Madden, D. Luff, M. Johnson, D. Ahrens, R. Sallinen, T. Schripp, G. Eckel, U. Bauder, P. Le Clercq
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 11255-11273 (2024)
In order to reduce aviation's CO2 emissions and comply with current climate targets, the European Union plans a mandatory quota of 2 % sustainable aviation fuel (SAF) by 2025, rising up to ≥70 % SAF by 2050. In addition to a reduction of life cycle
Externí odkaz:
https://doaj.org/article/a311151d74a64c81b55fb5a03d4d9a53
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 6071-6093 (2024)
The current best-estimate of the global annual mean radiative forcing (RF) attributable to contrail cirrus is thought to be 3 times larger than the RF from aviation's cumulative CO2 emissions. Here, we simulate the global contrail RF for 2019–2021
Externí odkaz:
https://doaj.org/article/4bdcb57f67b043409bbeab03b0233a6d
Autor:
R. S. Märkl, C. Voigt, D. Sauer, R. K. Dischl, S. Kaufmann, T. Harlaß, V. Hahn, A. Roiger, C. Weiß-Rehm, U. Burkhardt, U. Schumann, A. Marsing, M. Scheibe, A. Dörnbrack, C. Renard, M. Gauthier, P. Swann, P. Madden, D. Luff, R. Sallinen, T. Schripp, P. Le Clercq
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 3813-3837 (2024)
Powering aircraft by sustainable aviation fuels (SAFs) is a pathway to reduce the climate impact of aviation by lowering aviation lifecycle CO2 emissions and by reducing ice crystal numbers and radiative forcing from contrails. While the effect of SA
Externí odkaz:
https://doaj.org/article/c12a484cee7341c491df0e54ac25612c
Autor:
Y. Li, C. Mahnke, S. Rohs, U. Bundke, N. Spelten, G. Dekoutsidis, S. Groß, C. Voigt, U. Schumann, A. Petzold, M. Krämer
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 2251-2271 (2023)
Microphysical, optical, and environmental properties of contrail cirrus and natural cirrus were investigated by applying a new, statistically based contrail–cirrus separation method to 14.7 h of cirrus cloud measurements (sampling frequency 1 Hz, m
Externí odkaz:
https://doaj.org/article/4782de8084e64d43959004a4066bc880
Autor:
S. F. Reifenberg, A. Martin, M. Kohl, S. Bacer, Z. Hamryszczak, I. Tadic, L. Röder, D. J. Crowley, H. Fischer, K. Kaiser, J. Schneider, R. Dörich, J. N. Crowley, L. Tomsche, A. Marsing, C. Voigt, A. Zahn, C. Pöhlker, B. A. Holanda, O. Krüger, U. Pöschl, M. Pöhlker, P. Jöckel, M. Dorf, U. Schumann, J. Williams, B. Bohn, J. Curtius, H. Harder, H. Schlager, J. Lelieveld, A. Pozzer
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 10901-10917 (2022)
Aerosols influence the Earth's energy balance directly by modifying the radiation transfer and indirectly by altering the cloud microphysics. Anthropogenic aerosol emissions dropped considerably when the global COVID-19 pandemic resulted in severe re
Externí odkaz:
https://doaj.org/article/e3b43aa46efa4095afee7bcb6e4c01fa
Autor:
R. Teoh, U. Schumann, E. Gryspeerdt, M. Shapiro, J. Molloy, G. Koudis, C. Voigt, M. E. J. Stettler
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 10919-10935 (2022)
Around 5 % of anthropogenic radiative forcing (RF) is attributed to aviation CO2 and non-CO2 impacts. This paper quantifies aviation emissions and contrail climate forcing in the North Atlantic, one of the world's busiest air traffic corridors, over
Externí odkaz:
https://doaj.org/article/ab128052834348d2bd791d8dcce30884
Autor:
M. D. Andrés Hernández, A. Hilboll, H. Ziereis, E. Förster, O. O. Krüger, K. Kaiser, J. Schneider, F. Barnaba, M. Vrekoussis, J. Schmidt, H. Huntrieser, A.-M. Blechschmidt, M. George, V. Nenakhov, T. Harlass, B. A. Holanda, J. Wolf, L. Eirenschmalz, M. Krebsbach, M. L. Pöhlker, A. B. Kalisz Hedegaard, L. Mei, K. Pfeilsticker, Y. Liu, R. Koppmann, H. Schlager, B. Bohn, U. Schumann, A. Richter, B. Schreiner, D. Sauer, R. Baumann, M. Mertens, P. Jöckel, M. Kilian, G. Stratmann, C. Pöhlker, M. Campanelli, M. Pandolfi, M. Sicard, J. L. Gómez-Amo, M. Pujadas, K. Bigge, F. Kluge, A. Schwarz, N. Daskalakis, D. Walter, A. Zahn, U. Pöschl, H. Bönisch, S. Borrmann, U. Platt, J. P. Burrows
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 5877-5924 (2022)
Megacities and other major population centres (MPCs) worldwide are major sources of air pollution, both locally as well as downwind. The overall assessment and prediction of the impact of MPC pollution on tropospheric chemistry are challenging. The p
Externí odkaz:
https://doaj.org/article/c5b4bf086bc1409d99f560f466a4cc9e
Autor:
M. Carstensen, D. Masson, U. Schuman, C. Felixmüller, H. Hille, J. Pferdmenges, D. Geisen-Neuroth, U. Mattner, M. Voß
Publikováno v:
Geburtshilfe und Frauenheilkunde. 63:56-62
Purpose: To evaluate uterine artery Doppler screening in decentralized routine antenatal care for selection of pregnancies with high risk for severe pre-eclampsia and intrauterine growth restriction. Material and Methods: In a period of 18 months all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d88d82a5d49fbd117cc9c430eb00c2d
https://doi.org/10.1055/s-2003-37100
https://doi.org/10.1055/s-2003-37100
Autor:
U. Schumann, I. Poll, R. Teoh, R. Koelle, E. Spinielli, J. Molloy, G. S. Koudis, R. Baumann, L. Bugliaro, M. Stettler, C. Voigt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 7429-7450 (2021)
The strong reduction of air traffic during the COVID-19 pandemic provides a unique test case for the relationship between air traffic density, contrails, and their radiative forcing of climate change. Here, air traffic and contrail cirrus changes are
Externí odkaz:
https://doaj.org/article/7ea6cf2afe0f44f6969e9f0c49f493d8