Zobrazeno 1 - 10
of 86
pro vyhledávání: '"P C, Jacobi"'
Publikováno v:
Weather and Climate Dynamics, Vol 5, Pp 1223-1268 (2024)
Heterogeneous radiative forcing in mid-latitudes, such as that exerted by aerosols, has been found to affect the Arctic climate, though the mechanisms remain debated. In this study, we leverage deep learning (DL) techniques to explore the complex res
Externí odkaz:
https://doaj.org/article/ee73c46f80a34169b00e3ba956147c8b
Publikováno v:
Weather and Climate Dynamics, Vol 5, Pp 895-912 (2024)
The stratospheric polar vortex (SPV) comprises strong westerly winds during winter in each hemisphere. Despite ample knowledge on the SPV's high variability and its frequent disruptions by sudden stratospheric warmings (SSWs) in the Northern Hemisphe
Externí odkaz:
https://doaj.org/article/5a47cd62a5fe4d9f9fa9903e9577a6f6
Autor:
G. Stober, S. L. Vadas, E. Becker, A. Liu, A. Kozlovsky, D. Janches, Z. Qiao, W. Krochin, G. Shi, W. Yi, J. Zeng, P. Brown, D. Vida, N. Hindley, C. Jacobi, D. Murphy, R. Buriti, V. Andrioli, P. Batista, J. Marino, S. Palo, D. Thorsen, M. Tsutsumi, N. Gulbrandsen, S. Nozawa, M. Lester, K. Baumgarten, J. Kero, E. Belova, N. Mitchell, T. Moffat-Griffin, N. Li
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 4851-4873 (2024)
The Hunga Tonga–Hunga Ha′apai volcano erupted on 15 January 2022, launching Lamb waves and gravity waves into the atmosphere. In this study, we present results using 13 globally distributed meteor radars and identify the volcanogenic gravity wave
Externí odkaz:
https://doaj.org/article/0133d4fea3734285b24eb6038c6c999c
Publikováno v:
Advances in Radio Science, Vol 21, Pp 111-121 (2023)
We analyse 43 years of mesosphere/lower thermosphere (MLT) horizontal winds obtained from a joint analysis of low frequency (LF) spaced receiver lower ionospheric drift measurements from late 1978 through 2008 and VHF meteor radar wind observations s
Externí odkaz:
https://doaj.org/article/a292870a73cb458c932d6da9e38f802a
Autor:
J. Jaen, T. Renkwitz, H. Liu, C. Jacobi, R. Wing, A. Kuchař, M. Tsutsumi, N. Gulbrandsen, J. L. Chau
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 14871-14887 (2023)
Continuous wind measurements using partial-reflection radars and specular meteor radars have been carried out for nearly 2 decades (2004–2022) at middle and high latitudes over Germany (∼ 54∘ N) and northern Norway (∼ 69∘ N), respectively.
Externí odkaz:
https://doaj.org/article/ad00e12a67ed4d37949cba869a2359a1
Autor:
O. Linke, J. Quaas, F. Baumer, S. Becker, J. Chylik, S. Dahlke, A. Ehrlich, D. Handorf, C. Jacobi, H. Kalesse-Los, L. Lelli, S. Mehrdad, R. A. J. Neggers, J. Riebold, P. Saavedra Garfias, N. Schnierstein, M. D. Shupe, C. Smith, G. Spreen, B. Verneuil, K. S. Vinjamuri, M. Vountas, M. Wendisch
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 9963-9992 (2023)
The Arctic has warmed more rapidly than the global mean during the past few decades. The lapse rate feedback (LRF) has been identified as being a large contributor to the Arctic amplification (AA) of climate change. This particular feedback arises fr
Externí odkaz:
https://doaj.org/article/1c40dbae81d544ec9a1b60fffb89f8dc
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 3799-3818 (2023)
The teleconnection between the quasi-biennial oscillation (QBO) and the Arctic stratospheric polar vortex, or the Holton–Tan (HT) relationship, may change in a warmer climate or one with stratospheric aerosol intervention (SAI) compared to the pres
Externí odkaz:
https://doaj.org/article/655148f38be840139253fb32d0550e41
Publikováno v:
Advances in Radio Science, Vol 20, Pp 85-92 (2023)
We analyse sporadic E (ES) layer occurrence rates (OR) obtained from ionospheric GPS radio occultation measurements by the FORMOSAT-3/COSMIC constellation. Maximum OR are seen at 95–105 km altitude. Midlatitude ES layers are mainly due to wind shea
Externí odkaz:
https://doaj.org/article/1935c44773704f6e942f87c06a012739
Autor:
G. Stober, A. Liu, A. Kozlovsky, Z. Qiao, A. Kuchar, C. Jacobi, C. Meek, D. Janches, G. Liu, M. Tsutsumi, N. Gulbrandsen, S. Nozawa, M. Lester, E. Belova, J. Kero, N. Mitchell
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 5769-5792 (2022)
Meteor radars have become widely used instruments to study atmospheric dynamics, particularly in the 70 to 110 km altitude region. These systems have been proven to provide reliable and continuous measurements of horizontal winds in the mesosphere an
Externí odkaz:
https://doaj.org/article/441a7e5c7e894dafbabf273e26fe8f9b
Autor:
S. Sarkhel, G. Stober, J. L. Chau, S. M. Smith, C. Jacobi, S. Mondal, M. G. Mlynczak, J. M. Russell III
Publikováno v:
Annales Geophysicae, Vol 40, Pp 179-190 (2022)
An intriguing and rare gravity wave event was recorded on the night of 25 April 2017 using a multiwavelength all-sky airglow imager over northern Germany. The airglow imaging observations at multiple altitudes in the mesosphere and lower thermosphere
Externí odkaz:
https://doaj.org/article/1157113b92564d13b76b6d1df0c0f193