Zobrazeno 1 - 10
of 1 091
pro vyhledávání: '"D. SAUER"'
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
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
Publikováno v:
Eiszeitalter und Gegenwart, Vol 73, Pp 1-22 (2024)
Loess–palaeosol sequences (LPSs) are important archives of landscape evolution, recording alternating periods of geomorphic activity (dust deposition and slope processes) and landscape stability (soil formation). LPSs of the Rhône Rift Valley are
Externí odkaz:
https://doaj.org/article/baf78c7ab712433cb89272d71a450758
Autor:
V. Hahn, R. Meerkötter, C. Voigt, S. Gisinger, D. Sauer, V. Catoire, V. Dreiling, H. Coe, C. Flamant, S. Kaufmann, J. Kleine, P. Knippertz, M. Moser, P. Rosenberg, H. Schlager, A. Schwarzenboeck, J. Taylor
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 8515-8530 (2023)
Reflection of solar radiation by tropical low-level clouds has an important cooling effect on climate and leads to decreases in surface temperatures. Still, the effect of pollution on ubiquitous tropical continental low-level clouds and the investiga
Externí odkaz:
https://doaj.org/article/3f0f2891716f4432b45d1c58d2c26fc8
Autor:
B. Greenshields, B. von der Lühe, F. Schwarz, H. J. Hughes, A. Tjoa, M. Kotowska, F. Brambach, D. Sauer
Publikováno v:
Biogeosciences, Vol 20, Pp 1259-1276 (2023)
Most plant-available Si in strongly desilicated soils is provided through litter decomposition and subsequent phytolith dissolution. The importance of silicon (Si) cycling in tropical soil–plant systems raised the question of whether oil-palm (Elae
Externí odkaz:
https://doaj.org/article/b07c52822865487eb97519be57ea9755
Publikováno v:
SOIL, Vol 9, Pp 169-188 (2023)
Effects of oil-palm (Elaeis guineensis Jacq.) management on silicon (Si) cycling under smallholder oil-palm plantations have hardly been investigated. As oil palms are Si accumulators, we hypothesized that management practices and topsoil erosion may
Externí odkaz:
https://doaj.org/article/4aac4f5cb44441e293aaaec0edc3e0ff
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:
R. C. Braga, B. Ervens, D. Rosenfeld, M. O. Andreae, J.-D. Förster, D. Fütterer, L. Hernández Pardo, B. A. Holanda, T. Jurkat-Witschas, O. O. Krüger, O. Lauer, L. A. T. Machado, C. Pöhlker, D. Sauer, C. Voigt, A. Walser, M. Wendisch, U. Pöschl, M. L. Pöhlker
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 17513-17528 (2021)
Aerosol–cloud interactions contribute to the large uncertainties in current estimates of climate forcing. We investigated the effect of aerosol particles on cloud droplet formation by model calculations and aircraft measurements over the Amazon and
Externí odkaz:
https://doaj.org/article/e69351355908468d8bd527b1865d8724
Autor:
T. Bräuer, C. Voigt, D. Sauer, S. Kaufmann, V. Hahn, M. Scheibe, H. Schlager, F. Huber, P. Le Clercq, R. H. Moore, B. E. Anderson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 16817-16826 (2021)
Sustainable aviation fuels can reduce contrail ice numbers and radiative forcing by contrail cirrus. We measured apparent ice emission indices for fuels with varying aromatic content at altitude ranges of 9.1–9.8 and 11.4–11.6 km. Measurement dat
Externí odkaz:
https://doaj.org/article/58378ba4fc74449286ce39a3473bf27e