Zobrazeno 1 - 10
of 139
pro vyhledávání: '"I. Krisch"'
Autor:
M. Ern, M. A. Diallo, D. Khordakova, I. Krisch, P. Preusse, O. Reitebuch, J. Ungermann, M. Riese
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 9549-9583 (2023)
The quasi-biennial oscillation (QBO) of the stratospheric tropical winds influences the global circulation over a wide range of latitudes and altitudes. Although it has strong effects on surface weather and climate, climate models have great difficul
Externí odkaz:
https://doaj.org/article/158d88747fc641c68e031fe9e5c8a6a7
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 3465-3479 (2022)
Since its launch in 2018, the European Space Agency's Earth Explorer satellite Aeolus has provided global height resolved measurements of horizontal wind in the troposphere and lower stratosphere for the first time. Novel datasets such as these provi
Externí odkaz:
https://doaj.org/article/0f8f4b2a50434bc68a9df74b1159854a
Autor:
C. J. Wright, R. J. Hall, T. P. Banyard, N. P. Hindley, I. Krisch, D. M. Mitchell, W. J. M. Seviour
Publikováno v:
Weather and Climate Dynamics, Vol 2, Pp 1283-1301 (2021)
Major sudden stratospheric warmings (SSWs) are extreme dynamical events where the usual strong westerly winds of the stratospheric polar vortex temporarily weaken or reverse and polar stratospheric temperatures rise by tens of kelvins over just a few
Externí odkaz:
https://doaj.org/article/dd30b01178f042efa5939e2bbdff534c
Orographically induced spontaneous imbalance within the jet causing a large-scale gravity wave event
Autor:
M. Geldenhuys, P. Preusse, I. Krisch, C. Zülicke, J. Ungermann, M. Ern, F. Friedl-Vallon, M. Riese
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 10393-10412 (2021)
To better understand the impact of gravity waves (GWs) on the middle atmosphere in the current and future climate, it is essential to understand their excitation mechanisms and to quantify their basic properties. Here a new process for GW excitation
Externí odkaz:
https://doaj.org/article/6fdeae9688f7435d9833bef25fca6c1c
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 11469-11490 (2020)
Many gravity wave analyses, based on either observations or model simulations, assume the presence of only a single dominant wave. This paper shows that there are much more complex cases with gravity waves from multiple sources crossing each others'
Externí odkaz:
https://doaj.org/article/e3622099100a44bf9046597c56a7b086
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 853-872 (2019)
Multiple limb sounder measurements of the same atmospheric region taken from different directions can be combined in a 3-D tomographic retrieval. Mathematically, this is a computationally expensive inverse modelling problem. It typically requires an
Externí odkaz:
https://doaj.org/article/54df46c1d1184f19b07bc6ecd861cf58
Autor:
W. Woiwode, A. Dörnbrack, M. Bramberger, F. Friedl-Vallon, F. Haenel, M. Höpfner, S. Johansson, E. Kretschmer, I. Krisch, T. Latzko, H. Oelhaf, J. Orphal, P. Preusse, B.-M. Sinnhuber, J. Ungermann
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 15643-15667 (2018)
We report airborne remote-sensing observations of a tropopause fold during two crossings of the polar front jet over northern Italy on 12 January 2016. The GLORIA (Gimballed Limb Observer for Radiance Imaging of the Atmosphere) observations allowe
Externí odkaz:
https://doaj.org/article/8650df66e5754e74b6ea3f83e9f3e2c7
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 4327-4344 (2018)
Three-dimensional measurements of gravity waves are required in order to quantify their direction-resolved momentum fluxes and obtain a better understanding of their propagation characteristics. Such 3-D measurements of gravity waves in the lowerm
Externí odkaz:
https://doaj.org/article/6288630a08bb4c1f8adc247217866d47
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 3871-3882 (2018)
Limb sounding instruments play an important role in the monitoring of climate trends, as they provide a good vertical resolution. Traceability to the International System of Units (SI) via onboard reference or transfer standards is needed to compa
Externí odkaz:
https://doaj.org/article/1c2a72ec4a4c4fe296c3790548f637dd
Autor:
I. Krisch, P. Preusse, J. Ungermann, A. Dörnbrack, S. D. Eckermann, M. Ern, F. Friedl-Vallon, M. Kaufmann, H. Oelhaf, M. Rapp, C. Strube, M. Riese
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 14937-14953 (2017)
Atmospheric gravity waves are a major cause of uncertainty in atmosphere general circulation models. This uncertainty affects regional climate projections and seasonal weather predictions. Improving the representation of gravity waves in general c
Externí odkaz:
https://doaj.org/article/b7942af8cf87491ca739b407fd59553d