Zobrazeno 1 - 10
of 192
pro vyhledávání: '"C, Hardiman"'
Publikováno v:
Weather and Climate Dynamics, Vol 5, Pp 1061-1078 (2024)
We develop a novel technique for characterising the latitude (ϕ‾), tilt (α) and intensity (Umean) of the North Atlantic eddy-driven jet using a feature identification method and two-dimensional moment analysis. Applying this technique to the ERA5
Externí odkaz:
https://doaj.org/article/64794b797ee7467093061aea3eb86e88
Autor:
Nick Dunstone, Doug M. Smith, Steven C. Hardiman, Leon Hermanson, Sarah Ineson, Gillian Kay, Chaofan Li, Julia F. Lockwood, Adam A. Scaife, Hazel Thornton, Mingfang Ting, Lei Wang
Publikováno v:
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-11 (2023)
Abstract The Summer North Atlantic Oscillation is the primary mode of atmospheric variability in the North Atlantic region and has a significant influence on regional European, North American and Asian summer climate. However, current dynamical seaso
Externí odkaz:
https://doaj.org/article/b5a5236164b341868c406bbbbb54eaec
Autor:
Nick Dunstone, Doug M. Smith, Steven C. Hardiman, Paul Davies, Sarah Ineson, Shipra Jain, Chris Kent, Gill Martin, Adam A. Scaife
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-11 (2023)
Abstract Skilful predictions of near-term climate extremes are key to a resilient society. However, standard methods of analysing seasonal forecasts are not optimised to identify the rarer and most impactful extremes. For example, standard tercile pr
Externí odkaz:
https://doaj.org/article/7f12a9c8b2c34a5ab8d9826a5c3df8fa
Publikováno v:
Weather and Climate Dynamics, Vol 4, Pp 213-228 (2023)
Sudden-stratospheric-warming (SSW) events are often followed by significant weather and climate impacts at the surface. By affecting the North Atlantic Oscillation (NAO), SSWs can lead to periods of extreme cold in parts of Europe and North America.
Externí odkaz:
https://doaj.org/article/d121343afdf943dd8a38db88ab1ba7a7
Publikováno v:
Environmental Research Letters, Vol 19, Iss 4, p 044003 (2024)
Northern Europe and Northeast Asia, which are climatologically mild and temperate in early summer, both witnessed record-breaking heat extremes in June 2023. With a focus on the subseasonal time scale, this study highlights a teleconnected relationsh
Externí odkaz:
https://doaj.org/article/78eef1db769542e79dba0e361d1558f6
Autor:
Steven C. Hardiman, Nick J. Dunstone, Adam A. Scaife, Doug M. Smith, Ruth Comer, Yu Nie, Hong-Li Ren
Publikováno v:
npj Climate and Atmospheric Science, Vol 5, Iss 1, Pp 1-8 (2022)
Abstract The signal-to-noise paradox that climate models are better at predicting the real world than their own ensemble forecast members highlights a serious and currently unresolved model error, adversely affecting climate predictions and introduci
Externí odkaz:
https://doaj.org/article/d791a4dea8b940e9b092980fd50f56e1
Autor:
D. M. Smith, R. Eade, M. B. Andrews, H. Ayres, A. Clark, S. Chripko, C. Deser, N. J. Dunstone, J. García-Serrano, G. Gastineau, L. S. Graff, S. C. Hardiman, B. He, L. Hermanson, T. Jung, J. Knight, X. Levine, G. Magnusdottir, E. Manzini, D. Matei, M. Mori, R. Msadek, P. Ortega, Y. Peings, A. A. Scaife, J. A. Screen, M. Seabrook, T. Semmler, M. Sigmond, J. Streffing, L. Sun, A. Walsh
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-15 (2022)
The degree to which Arctic sea ice decline influences the mid-latitude atmospheric circulation is widely debated. Here, the authors use a coordinated multi-model experiment to show that Arctic sea ice loss causes a weakening of the mid-latitude weste
Externí odkaz:
https://doaj.org/article/2b21e3b535a241a7bac4317e090b079b
Autor:
A. A. Scaife, M. P. Baldwin, A. H. Butler, A. J. Charlton-Perez, D. I. V. Domeisen, C. I. Garfinkel, S. C. Hardiman, P. Haynes, A. Y. Karpechko, E.-P. Lim, S. Noguchi, J. Perlwitz, L. Polvani, J. H. Richter, J. Scinocca, M. Sigmond, T. G. Shepherd, S.-W. Son, D. W. J. Thompson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 2601-2623 (2022)
Over recent years there have been concomitant advances in the development of stratosphere-resolving numerical models, our understanding of stratosphere–troposphere interaction, and the extension of long-range forecasts to explicitly include the str
Externí odkaz:
https://doaj.org/article/c85e272092f84981af944087d9177934
Autor:
M. Seabrook, D. M. Smith, N. J. Dunstone, R. Eade, L. Hermanson, A. A. Scaife, S. C. Hardiman
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 2, Pp n/a-n/a (2023)
Abstract It is well established that the positive phase of El Niño Southern Oscillation (ENSO) tends to weaken the Northern Hemisphere stratospheric polar vortex (SPV), promoting a negative North Atlantic Oscillation (NAO). Pacific Decadal Variabili
Externí odkaz:
https://doaj.org/article/e9911a698e4e4ceb950a306aaabc7220
Autor:
M. Abalos, N. Calvo, S. Benito-Barca, H. Garny, S. C. Hardiman, P. Lin, M. B. Andrews, N. Butchart, R. Garcia, C. Orbe, D. Saint-Martin, S. Watanabe, K. Yoshida
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 13571-13591 (2021)
The Brewer–Dobson circulation (BDC) is a key feature of the stratosphere that models need to accurately represent in order to simulate surface climate variability and change adequately. For the first time, the Climate Model Intercomparison Project
Externí odkaz:
https://doaj.org/article/00ba4e7b607644f49f7badc6f680c236