Results 61 to 70 of about 15,877 (307)

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

Decreasing trend in destructive potential of tropical cyclones in the South Indian Ocean since the mid-1990s

Communications Earth & Environment
Tropical cyclone activity often leads to many adverse impacts and assessing their destructiveness is a crucial scientific concern. Here we investigated changes in the destructiveness of tropical cyclones worldwide using the power dissipation index and ...
Shifei Tu, Zhenzhen Hu, Mei Liang, Wen Zhou, Johnny C. L. Chan, Jianjun Xu   +5 more
doaj   +1 more source

Using the Debiased Brier Skill Score to Evaluate S2S Tropical Cyclone Forecasting

Journal of Marine Science and Engineering
To evaluate tropical cyclone forecasting on synoptic timescale, tracking and intensity are used. On subseasonal to seasonal (S2S) timescale, what aspects of tropical cyclones should be predicted and how to evaluate forecasting skills still remain open ...
Yuanben Li, Xiaochun Wang, Bingke Zhao, Ming Ying, Yimin Liu, Frederic Vitart   +5 more
doaj   +1 more source

Recent poleward shift of tropical cyclone formation linked to Hadley cell expansion

, 2018
Recent research indicates that the annual-mean locations of tropical cyclones have migrated toward higher latitudes. Concurrently, an anthropogenically forced tropical expansion has been observed, yet the connection between the two processes remains ...
Sur, Sharmila, S. Sharmila, K. J. E. Walsh, Walsh, KJE, Sharmila, S, Walsh, K. J. E.   +5 more
core   +1 more source

A multimodel intercomparison study of variable‐resolution global models with grid refinement over the Arctic and Antarctic

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We document the protocol and first results from the first ever coordinated multimodel variable‐resolution experiment set with refinement over the polar regions. We find that the refinement generally yields model‐dependent effects. The most consistent improvement is an amelioration of the upper‐level cold bias in the polar regions that translates into ...
Lise Seland Graff, Dörthe Handorf, Raphael Köhler, Xavier Levine, René R. Wijngaard, Gareth J. Marshall, Alexey Yu. Karpechko, Ryan S. Williams, Priscilla A. Mooney   +8 more
wiley   +1 more source

Exploiting Aeolus winds in a regional numerical weather prediction model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Aeolus measured winds have proven to be beneficial for global models. However, demonstrating positive impact for limited‐area models has been a challenge so far. For the first time, we have demonstrated a statistically significant positive impact of Aeolus winds in a limited‐area model by using the 4DVar data assimilation technique and the most recent ...
Gert‐Jan Marseille, Roohollah Azad, Martin Ridal, Susanna Hagelin   +3 more
wiley   +1 more source

Sahara greening may have diminished mid-Holocene Atlantic tropical cyclones

Communications Earth & Environment
While anthropogenic warming is projected to green the Sahara region, the potential impacts on tropical cyclone remain poorly understood. Here we examine the mid-Holocene Sahara greening (characterized by expanded vegetation and reduced dust emissions) as
Yanning Ou, Ming Zhang, Yonggang Liu, Haikun Zhao, Xi Cao, Jiang Zhu   +5 more
doaj   +1 more source

The extratropical transition of tropical cyclone Lili (1996) and its crucial contribution to a moderate extratropical development

, 2005
The transition that a tropical cyclone experiences as it moves into the extratropical environment (known as extratropical transition) can result in the decay or intensification of a baroclinic cyclone.
Gray, S. L., Agusti-Panareda, A., Thorncroft, C., Agusti-Panareda, Anna, Thorncroft, Chris, Craig, G. C., Gray, Suzanne, Craig, George   +7 more
core  

Forecast‐Error Diagnostics in Neural Weather Models

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Deep learning weather prediction models enable efficient forecast‐error diagnostics through auto‐differentiation and low computational cost. We apply grid‐point relaxation and gradient‐based error sensitivity to identify key forecast‐error sources. Results show that medium‐range forecasts in the midlatitudes benefit most from relaxing the stratosphere ...
Uroš Perkan, Gregor Skok, Žiga Zaplotnik   +2 more
wiley   +1 more source

Objective determination of the extratropical transition of tropical cyclones in the Northern Hemisphere

, 2015
Extratropical transition (ET) has eluded objective identification since the realisation of its existence in the 1970s. Recent advances in numerical, computational models have provided data of higher resolution than previously available.
Joshua Studholme, Kevin I. Hodges, Studholme, J, Brierley, Chris. M., Chris M. Brierley, Hodges, KI, Hodges, Kevin I., Studholme, Joshua, Brierley, C   +8 more
core   +1 more source