Results 41 to 50 of about 9,484 (178)

An opportunity index to anticipate when subseasonal predictions are useful

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Simultaneously active subseasonal windows of forecast opportunity can be combined into a single opportunity index, which can be used operationally to anticipate enhanced or reduced subseasonal prediction skill. For predictions of temperature anomalies in Switzerland during summer—a region and season with particularly low predictability—skill can nearly
Dominik Büeler, Maria Pyrina, Adel Imamovic, Christoph Spirig, Daniela I. V. Domeisen   +4 more
wiley   +1 more source

Observed connection between the Madden–Julian oscillation and the upper tropospheric biennial oscillation

Environmental Research Letters
It has been found that the quasi-biennial oscillation (QBO) in the stratosphere have an important impact on the Madden Julian oscillation (MJO). In this study, we show that there is an obvious biennial oscillation in the tropical upper troposphere, which
Feiyang Wang, Tanlong Dai, Yuanyuan Han
doaj   +1 more source

Atmospheric temperature responses to solar irradiance and geomagnetic activity [PDF]

, 2005
The relative effects of solar irradiance and geomagnetic activity on the atmospheric temperature anomalies (Ta) are examined from the monthly to interdecadal timescales. Geomagnetic Ap (Ap) signals are found primarily in the stratosphere, while the solar
Hua Lu, Martin J. Jarvis, Hans-F. Graf, Peter C. Young, Richard B. Horne, Arnold, Baldwin, Baldwin, Boberg, Bochnicek, Brasseur, Bucha, Callis, Callis, Clilverd, Crooks, Davis, Ebisuzaki, Egorova, Garrett, Gleisner, Gray, Gray, Haigh, Haigh, Haigh, Haigh, Haigh, Hinteregger, Holton, Hood, Hoyt, Jackman, Keckhut, Kodera, Kodera, Kodera, Kuroda, Labitzke, Labitzke, Labitzke, Labitzke, Labitzke, Labitzke, Labitzke, Labitzke, Lean, Lean, Matthes, Mayaud, Naito, Naujokat, Orsolini, Pascoe, Randall, Randall, Randel, Renard, Rinsland, Rottman, Rozanov, Salby, Scaife, Seidel, Sheeley, Shindell, Shindell, Siskind, Solomon, Thejll, Thiebaux, Thorne, Thorne, van Loon, Vennerstrom, Young, Young   +76 more
core   +2 more sources

Diagnosing the 11‐year solar cycle's influence on the East Atlantic pattern

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A previously unidentified solar‐cycle response in the East Atlantic pattern is found in late winter at lag +3 years with larger amplitude than the NAO response. A statistically significant NAO response to the solar cycle is seen in late winter at lag 0 years.
Stergios Misios, Paula L. M. Gonzalez, Lesley J. Gray, Scott Osprey, Hedi Ma   +4 more
wiley   +1 more source

Response of trace gases to the disrupted 2015–2016 quasi-biennial oscillation [PDF]

Atmospheric Chemistry and Physics, 2017
The quasi-biennial oscillation (QBO) is a quasiperiodic alternation between easterly and westerly zonal winds in the tropical stratosphere, propagating downward from the middle stratosphere to the tropopause with a period that varies from 24 to 32 ...
O. V. Tweedy, N. A. Kramarova, N. A. Kramarova, S. E. Strahan, S. E. Strahan, P. A. Newman, L. Coy, W. J. Randel, M. Park, D. W. Waugh, S. M. Frith, S. M. Frith   +11 more
doaj   +1 more source

On the forcings of the unusual Quasi-Biennial Oscillation structure in February 2016 [PDF]

Atmospheric Chemistry and Physics, 2020
The westerly phase of the stratospheric Quasi-Biennial Oscillation (QBO) was reversed during Northern Hemisphere winter 2015/2016 for the first time since records began in 1953.
H. Li, H. Li, H. Li, R. Pilch Kedzierski, K. Matthes, K. Matthes   +5 more
doaj   +1 more source

Epistemic and aleatoric uncertainty quantification in weather and climate models

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Aleatoric and epistemic uncertainties over time on weather and climate time‐scales, estimated through ensembles that sample aleatoric and epistemic uncertainty using Bayesian neural networks for parameterisations in the Lorenz 1996 model. The spread shows the 16th and 84th percentiles.
Laura A. Mansfield, Hannah M. Christensen   +1 more
wiley   +1 more source

Temporal variations in the acoustic signal from faculae

, 2012
The integrated brightness of the Sun shows variability on time-scales from minutes to decades. This variability is mainly caused by pressure mode oscillations, by granulation and by dark spots and bright faculae on the surface of the Sun.
Aigrain, Anderson, Appourchaux, Appourchaux, Berger, Berger, Brandenburg, Böhm-Vitense, C. Karoff, Chaplin, Chaplin, Chaplin, De Pontieu, Del, Fletcher, Fröhlich, Fröhlich, García, Gough, Handberg, Harvey, Harvey, Houdek, Iben, Kjeldsen, Lefebvre, Libbrecht, Lomb, Ludwig, Ludwig, Metcalfe, Michel, Nordlund, Toutain, Trampedach, Vázquez Ramió, Wedemeyer-Böhm, Wilks   +37 more
core   +1 more source

Tree‐Ring Oxygen Isotope Values During the Last Glacial Maximum and Insights to Future Changes in Climate

Terra Nova, EarlyView.
ABSTRACT Annual tree‐ring oxygen‐isotope values were measured from sections of two fossil logs of Picea mariana (black spruce) recovered from last glacial maximum proglacial sediment in Illinois, USA. Collectively, the specimens date from ca. 25,130 to 24,720 cal years BP.
Dana M. Labotka, Mostafa J. Fayek, B. Brandon Curry   +2 more
wiley   +1 more source

Teleconnection of the Quasi-biennial oscillation with boreal winter surface climate in Eurasia and North America

Communications Earth & Environment
An improved understanding of dynamical coupling from regional to global scales via tropospheric or stratospheric region can be helpful in improving seasonal forecasts for a given region of interest.
Vinay Kumar, Matthew H. Hitchman, Wenyuan Du, S. K. Dhaka, Shigeo Yoden   +4 more
doaj   +1 more source