Zobrazeno 1 - 10
of 959
pro vyhledávání: '"B. Christiansen"'
Autor:
F. Serva, B. Christiansen, P. Davini, J. vonHardenberg, G. van denOord, T. J. Reerink, K. Wyser, S. Yang
Publikováno v:
Journal of Advances in Modeling Earth Systems, Vol 16, Iss 4, Pp n/a-n/a (2024)
Abstract The simulated stratospheric dynamics have been improved compared to previous generations in many climate models taking part in the Coupled Model Intercomparison Project Phase 6 (CMIP6). This was achieved by going from low to high‐top confi
Externí odkaz:
https://doaj.org/article/8ec93409ed6e45a882b699050434960f
Autor:
F. C. Ljungqvist, B. Christiansen, J. Esper, H. Huhtamaa, L. Leijonhufvud, C. Pfister, A. Seim, M. K. Skoglund, P. Thejll
Publikováno v:
Climate of the Past, Vol 19, Pp 2463-2491 (2023)
The association between climate variability and grain harvest yields has been an important component of food security and economy in European history. Yet, inter-regional comparisons of climate–yield relationships have been hampered by locally vary
Externí odkaz:
https://doaj.org/article/0a2d738b003a4acbae43f04abe66e913
Autor:
B. Christiansen
Publikováno v:
Nonlinear Processes in Geophysics, Vol 28, Pp 409-422 (2021)
We give a simple description of the blessing of dimensionality with the main focus on the concentration phenomena. These phenomena imply that in high dimensions the lengths of independent random vectors from the same distribution have almost the same
Externí odkaz:
https://doaj.org/article/bbc8fdd6d4ab4e9f991adab0e9c9229f
Autor:
T. Schmith, P. Thejll, P. Berg, F. Boberg, O. B. Christensen, B. Christiansen, J. H. Christensen, M. S. Madsen, C. Steger
Publikováno v:
Hydrology and Earth System Sciences, Vol 25, Pp 273-290 (2021)
Severe precipitation events occur rarely and are often localised in space and of short duration, but they are important for societal managing of infrastructure. Therefore, there is a demand for estimating future changes in the statistics of the occur
Externí odkaz:
https://doaj.org/article/6868e98615414176902552b89dd99c70
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 9347-9364 (2017)
Ozone soundings from nine Nordic stations have been homogenized and interpolated to standard pressure levels. The different stations have very different data coverage; the longest period with data is from the end of the 1980s to 2014. At ea
Externí odkaz:
https://doaj.org/article/0709b87c1781460983edad0108b4289c
Autor:
A. Verdonschot, M. R. Beauchamp, T. A. Brusseau, M. J. M. Chinapaw, L. B. Christiansen, A. Daly-Smith, N. Eather, S. J. Fairclough, G. Faulkner, L. Foweather, A. García-Hermoso, A. S. Ha, N. Harris, T. Jaakkola, R. Jago, S. G. Kennedy, N. J. Lander, C. Lonsdale, Y. Manios, E. Mazzoli, E. Murtagh, N. Nathan, P. J. Naylor, M. Noetel, B. O’Keeffe, G. K. Resaland, N. D. Ridgers, K. Ridley, N. Riley, R. R. Rosenkranz, S. K. Rosenkranz, A. Sääkslahti, S. M. Sczygiol, T. Skovgaard, E. M. F. van Sluijs, J. J. Smith, M. Smith, G. Stratton, J. Vidal-Conti, C. A. Webster, E. S. Young, D. R. Lubans
Publikováno v:
International Journal of Behavioral Nutrition and Physical Activity, Vol 21, Iss 1, Pp 1-13 (2024)
Abstract Background Teachers are recognized as ‘key agents’ for the delivery of physical activity programs and policies in schools. The aim of our study was to develop and evaluate a tool to assess teachers’ capability, opportunity, and motivat
Externí odkaz:
https://doaj.org/article/dc37b441655d4a0aa43fae08a7638430
Publikováno v:
Frontiers in Sports and Active Living, Vol 6 (2024)
BackgroundPhysical activity that strengthens muscles and bones at least three times per week are recommended, but few adolescents meet this target. The aim of our study was to adapt and evaluate the feasibility and preliminary efficacy of the Resista
Externí odkaz:
https://doaj.org/article/fbafda7a15324a8ea9619911b2511293
Autor:
B. Christiansen, F. C. Ljungqvist
Publikováno v:
Climate of the Past, Vol 8, Iss 2, Pp 765-786 (2012)
We present two new multi-proxy reconstructions of the extra-tropical Northern Hemisphere (30–90° N) mean temperature: a two-millennia long reconstruction reaching back to 1 AD and a 500-yr long reconstruction reaching back to 1500 AD. The reconstr
Externí odkaz:
https://doaj.org/article/35d715d7eb364d259dcda53dcf822e54
Publikováno v:
Advances in Geosciences, Vol 13, Pp 37-43 (2008)
We present an order of magnitude estimate of the impact of sprites and other transient luminous events (TLEs) on the atmospheric temperature via ozone changes. To address the effects of expected TLE-ozone changes of at most a few percent, we first st
Externí odkaz:
https://doaj.org/article/834819856a834ad1918848f5f851e0c6
Autor:
B. M. Knudsen, N. R. P. Harris, S. B. Andersen, B. Christiansen, N. Larsen, M. Rex, B. Naujokat
Publikováno v:
Atmospheric Chemistry and Physics, Vol 4, Iss 7, Pp 1849-1856 (2004)
Future increases in the concentration of greenhouse gases and water vapour may cool the stratosphere further and increase the amount of polar stratospheric clouds (PSCs). Future Arctic PSC areas have been extrapolated from the highly significant tren
Externí odkaz:
https://doaj.org/article/ce5cde6ad17e45c4b7aa3bdfa0101380