Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Annika Seppälä"'
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
Abstract The past three years (2020–2022) have witnessed the re-emergence of large, long-lived ozone holes over Antarctica. Understanding ozone variability remains of high importance due to the major role Antarctic stratospheric ozone plays in clim
Externí odkaz:
https://doaj.org/article/9fd5f8de21084f0fb455b8c85708cb57
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 17, Pp n/a-n/a (2023)
Abstract Several drivers cause precipitation of energetic electrons into the atmosphere. While some of these drivers are accounted for in proxies of energetic electron precipitation (EEP) used in atmosphere and climate models, it is unclear to what e
Externí odkaz:
https://doaj.org/article/61e6a8e0eae546a79b68765c5245c824
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
This work reveals a significant energetic particle precipitation (EPP) impact on ozone and stratospheric temperatures during late winter/spring and highlights the need for an improved representation of decadal EPP forcing in climate simulations.
Externí odkaz:
https://doaj.org/article/99fe3861cffa41b5bd9f824217e1eb45
Autor:
William Ward, Annika Seppälä, Erdal Yiğit, Takuji Nakamura, Claudia Stolle, Jan Laštovička, Thomas N. Woods, Yoshihiro Tomikawa, Franz-Josef Lübken, Stanley C. Solomon, Daniel R. Marsh, Bernd Funke, Duggirala Pallamraju
Publikováno v:
Progress in Earth and Planetary Science, Vol 8, Iss 1, Pp 1-38 (2021)
Abstract While knowledge of the energy inputs from the Sun (as it is the primary energy source) is important for understanding the solar-terrestrial system, of equal importance is the manner in which the terrestrial part of the system organizes itsel
Externí odkaz:
https://doaj.org/article/d0c22e1cf25c429e9c0e12c48e9d9280
Autor:
Ji-Hee Lee, Geonhwa Jee, Young-Sil Kwak, Heejin Hwang, Annika Seppälä, In-Sun Song, Esa Turunen, Dae-Young Lee
Publikováno v:
Atmosphere, Vol 12, Iss 2, p 133 (2021)
Energetic particle precipitation (EPP) is known to be an important source of chemical changes in the polar middle atmosphere in winter. Recent modeling studies further suggest that chemical changes induced by EPP can also cause dynamic changes in the
Externí odkaz:
https://doaj.org/article/046488f62b8b48ce9cd7df9b21aab8b2
Publikováno v:
Atmospheric Chemistry and Physics (ACP)
Chlorofluorocarbon (CFC) emissions in the latter part of the 20th century reduced stratospheric ozone abundance substantially, especially in the Antarctic region. Simultaneously, polar stratospheric ozone is also destroyed catalytically by nitrogen o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8a5f3d6b6a171702ef849bc2f0bbeb3
https://doi.org/10.5194/acp-22-8137-2022
https://doi.org/10.5194/acp-22-8137-2022
Autor:
Jussi Seppälä, Iluminada Corripio, Noora Hirvonen, Matti Isohanni, Jenni Pylvänäinen, Jouko Miettunen, Heli Lehtiniemi, Anthony O. Ahmed, Erika Jääskeläinen, Hannu Koponen, Annika Seppälä
Publikováno v:
Schizophrenia Research. 236:123-134
Background As the burden of treatment-resistant schizophrenia (TRS) on patients and society is high it is important to identify predictors of response to medications in TRS. The aim was to analyse whether baseline patient and study characteristics pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95bbe727dcb5075ff8760b260942e392
https://doi.org/10.1016/j.schres.2021.08.005
https://doi.org/10.1016/j.schres.2021.08.005
Publikováno v:
Atmospheric Chemistry and Physics. 21:2819-2836
We investigate the impact of the so-called energetic particle precipitation (EPP) indirect effect on lower stratospheric ozone, ClO, and ClONO2 in the Antarctic springtime. We use observations from the Microwave Limb Sounder (MLS) and Ozone Monitorin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f4fb3faee04a22c53622615a07bba90
https://doi.org/10.5194/acp-21-2819-2021
https://doi.org/10.5194/acp-21-2819-2021
Chlorofluorocarbon (CFC) emissions in the latter part of the 20th century reduced stratospheric ozone abundance substantially, especially in the Antarctic region. Simultaneously, polar stratospheric ozone is also destroyed catalytically by nitrogen o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7daf085c97e90ca45644e8bebe82238d
Publikováno v:
Atmospheric Chemistry and Physics. 20:6259-6271
Observations from the Ozone Monitoring Instrument (OMI) on the Aura satellite are used to study the effect of energetic particle precipitation (EPP, as proxied by the geomagnetic activity index, Ap ) on the Antarctic stratospheric NO2 column in late
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c574640c4f01329750f684b7bebe4225
https://doi.org/10.5194/acp-20-6259-2020
https://doi.org/10.5194/acp-20-6259-2020