Zobrazeno 1 - 10
of 556
pro vyhledávání: '"D. Kunkel"'
Autor:
L. F. Millán, P. Hoor, M. I. Hegglin, G. L. Manney, H. Boenisch, P. Jeffery, D. Kunkel, I. Petropavlovskikh, H. Ye, T. Leblanc, K. Walker
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 7927-7959 (2024)
Ozone trends in the upper troposphere and lower stratosphere (UTLS) remain highly uncertain because of sharp spatial gradients and high variability caused by competing transport, chemical, and mixing processes near the upper-tropospheric jets and ext
Externí odkaz:
https://doaj.org/article/f1a17b84f18a4e32916ac8fdf4d61aee
Autor:
P. Joppe, J. Schneider, K. Kaiser, H. Fischer, P. Hoor, D. Kunkel, H.-C. Lachnitt, A. Marsing, L. Röder, H. Schlager, L. Tomsche, C. Voigt, A. Zahn, S. Borrmann
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 7499-7522 (2024)
The chemical composition of the upper troposphere/lower stratosphere region (UTLS) is influenced by horizontal transport of air masses, vertical transport within convective systems and warm conveyor belts, rapid turbulent mixing, as well as photochem
Externí odkaz:
https://doaj.org/article/c7a3d4adaa6d4f268111eff17166e058
Autor:
T. J. Schuck, J. Degen, E. Hintsa, P. Hoor, M. Jesswein, T. Keber, D. Kunkel, F. Moore, F. Obersteiner, M. Rigby, T. Wagenhäuser, L. M. Western, A. Zahn, A. Engel
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 689-705 (2024)
Anthropogenic trace gases often exhibit interhemispheric gradients because of larger emissions in the Northern Hemisphere. Depending on a tracer's emission pattern and sink processes, trace gas observations can thus be used to investigate interhemisp
Externí odkaz:
https://doaj.org/article/75a7946e31f44e37a4b7c625722a7c6f
Autor:
L. F. Millán, G. L. Manney, H. Boenisch, M. I. Hegglin, P. Hoor, D. Kunkel, T. Leblanc, I. Petropavlovskikh, K. Walker, K. Wargan, A. Zahn
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 2957-2988 (2023)
Ozone trend estimates have shown large uncertainties in the upper troposphere–lower stratosphere (UTLS) region despite multi-decadal observations available from ground-based, balloon, aircraft, and satellite platforms. These uncertainties arise fro
Externí odkaz:
https://doaj.org/article/8de7bc1f2316465baf9aa9f267486acb
Autor:
H.-C. Lachnitt, P. Hoor, D. Kunkel, M. Bramberger, A. Dörnbrack, S. Müller, P. Reutter, A. Giez, T. Kaluza, M. Rapp
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 355-373 (2023)
Orographic gravity waves (i.e., mountain waves) can potentially lead to cross-isentropic fluxes of trace gases via the generation of turbulence. During the DEEPWAVE (Deep Propagating Gravity Wave Experiment) campaign in July 2014, we performed tracer
Externí odkaz:
https://doaj.org/article/044fc9f99fd94ed883022edf435457eb
Publikováno v:
Weather and Climate Dynamics, Vol 2, Pp 631-651 (2021)
A climatology of the occurrence of strong wind shear in the upper troposphere–lower stratosphere (UTLS) is presented, which gives rise to defining a tropopause shear layer (TSL). Strong wind shear in the tropopause region is of interest because it
Externí odkaz:
https://doaj.org/article/4b280f5ea74e4ae581706adca5e97c45
Autor:
F. Köllner, J. Schneider, M. D. Willis, H. Schulz, D. Kunkel, H. Bozem, P. Hoor, T. Klimach, F. Helleis, J. Burkart, W. R. Leaitch, A. A. Aliabadi, J. P. D. Abbatt, A. B. Herber, S. Borrmann
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 6509-6539 (2021)
Aerosol particles impact the Arctic climate system both directly and indirectly by modifying cloud properties, yet our understanding of their vertical distribution, chemical composition, mixing state, and sources in the summertime Arctic is incomplet
Externí odkaz:
https://doaj.org/article/6406924080c649d9a2688ac372c9bf23
Autor:
H. Bozem, P. Hoor, D. Kunkel, F. Köllner, J. Schneider, A. Herber, H. Schulz, W. R. Leaitch, A. A. Aliabadi, M. D. Willis, J. Burkart, J. P. D. Abbatt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 15049-15071 (2019)
The springtime composition of the Arctic lower troposphere is to a large extent controlled by the transport of midlatitude air masses into the Arctic. In contrast, precipitation and natural sources play the most important role during summer. Within t
Externí odkaz:
https://doaj.org/article/68338ad1645843c4b73e4254f498dc34
Autor:
D. Kunkel, P. Hoor, T. Kaluza, J. Ungermann, B. Kluschat, A. Giez, H.-C. Lachnitt, M. Kaufmann, M. Riese
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 12607-12630 (2019)
Stratosphere–troposphere exchange within extratropical cyclones provides the potential for anthropogenic and natural surface emissions to rapidly reach the stratosphere as well as for ozone from the stratosphere to penetrate deep into the troposphe
Externí odkaz:
https://doaj.org/article/d620da3353674d60b0de3158915fd2c3
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 6621-6636 (2019)
The evolution of the tropopause inversion layer (TIL) during cyclogenesis in the North Atlantic storm track is investigated using operational meteorological analysis data (Integrated Forecast System from the European Centre for Medium-Range Weather F
Externí odkaz:
https://doaj.org/article/7a1062606bf4484fabf3f936cdfc25ba