Low‐frequency nonlinearity and regime behavior in the Northern Hemisphere extratropical atmosphere

A Hannachi, DM Straus, CLE Franzke… - Reviews of …, 2017 - Wiley Online Library
The extratropical atmosphere is characterized by robust circulations which have time scales
longer than that associated with develo** baroclinic systems but shorter than a season …

Stochastic methods and complexity science in climate research and modeling

CLE Franzke, R Blender, TJ O'Kane, V Lembo - Frontiers in Physics, 2022 - frontiersin.org
The 2021 Nobel prize for physics was awarded to two climate scientists, Syukuro Manabe
and Klaus Hasselmann, and the physicist Giorgio Parisi. While at first sight the work of Parisi …

[HTML][HTML] Antarctic sea ice regime shift associated with decreasing zonal symmetry in the Southern Annular Mode

S Schroeter, TJ O'Kane, PA Sandery - The Cryosphere, 2023 - tc.copernicus.org
Across the long-term (∼ 43-year) satellite record, Antarctic sea ice extent shows a small
overall circumpolar increase, resulting from opposing regional sea ice concentration …

Impact of atmospheric blocking on South America in austral summer

RR Rodrigues, T Woollings - Journal of Climate, 2017 - journals.ametsoc.org
This study investigates atmospheric blocking over eastern South America in austral summer
for the period of 1979–2014. The results show that blocking over this area is a consequence …

Revisiting the identification of wintertime atmospheric circulation regimes in the Euro‐Atlantic sector

SKJ Falkena, J de Wiljes, A Weisheimer… - Quarterly Journal of …, 2020 - Wiley Online Library
Atmospheric circulation is often clustered in so‐called circulation regimes, which are
persistent and recurrent patterns. For the Euro‐Atlantic sector in winter, most studies identify …

A stochastic stability equation for unsteady turbulence in the stable boundary layer

V Boyko, N Vercauteren - Quarterly Journal of the Royal …, 2023 - Wiley Online Library
The atmospheric boundary layer is particularly challenging to model in conditions of stable
stratification, which can be associated with intermittent or unsteady turbulence. We develop …

A machine learning approach to rapidly project climate responses under a multitude of net-zero emission pathways

V Kitsios, TJ O'Kane, D Newth - Communications Earth & Environment, 2023 - nature.com
Navigating a path toward net-zero, requires the assessment of physical climate risks for a
broad range of future economic scenarios, and their associated carbon concentration …

Sources of heterogeneous variability and trends in Antarctic sea-ice

RJ Matear, TJ O'Kane, JS Risbey… - Nature …, 2015 - nature.com
Abstract While the Northern Hemisphere sea-ice has uniformly declined over the past
several decades, the observed sea-ice in the Southern Hemisphere has exhibited regions of …

[HTML][HTML] Increased extreme fire weather occurrence in southeast Australia and related atmospheric drivers

D Richardson, AS Black, DP Monselesan… - Weather and Climate …, 2021 - Elsevier
There is evidence suggesting that fire activity in southeast Australia has increased in the
past two decades. There is also anecdotal evidence that pyrocumulonimbus events have …

A multiscale reexamination of the Pacific–South American pattern

TJ O'Kane, DP Monselesan… - Monthly Weather …, 2017 - journals.ametsoc.org
The authors undertake a multiscale spectral reexamination of the variability of the Pacific–
South American (PSA) pattern and the mechanisms by which this variability occurs. Time …