Model hierarchies for understanding atmospheric circulation

P Maher, EP Gerber, B Medeiros… - Reviews of …, 2019 - Wiley Online Library
In this review, we highlight the complementary relationship between simple and
comprehensive models in addressing key scientific questions to describe Earth's …

Seasonal evolution of the quasi‐biennial oscillation impact on the Northern Hemisphere polar vortex in winter

J Zhang, F Xie, Z Ma, C Zhang, M Xu… - Journal of …, 2019 - Wiley Online Library
Using potential vorticity to define Northern Hemisphere (NH) stratospheric polar vortex
strength and position, the influence of the QBO on the polar vortex in winter is analyzed. The …

Impact of stratospheric intrusions on ozone enhancement in the lower troposphere and implication to air quality in Hong Kong and other South China regions

K Zhao, J Huang, Y Wu, Z Yuan, Y Wang… - Journal of …, 2021 - Wiley Online Library
Stratospheric intrusions are an important source of ozone (O3) in the troposphere. In this
study, 17 years of O3 sounding data from the Hong Kong Observatory with a weekly …

[HTML][HTML] Dynamical response to the QBO in the northern winter stratosphere: Signatures in wave forcing and eddy fluxes of potential vorticity

IP White, H Lu, NJ Mitchell… - Journal of the Atmospheric …, 2015 - journals.ametsoc.org
Dynamical Response to the QBO in the Northern Winter Stratosphere: Signatures in Wave
Forcing and Eddy Fluxes of Potential Vorticity in: Journal of the Atmospheric Sciences Volume …

Disconnect Between Hadley Cell and Subtropical Jet Variability and Response to Increased CO2

ME Menzel, D Waugh, K Grise - Geophysical Research Letters, 2019 - Wiley Online Library
The subtropical jet (STJ) is thought to coexist with the edge of the Hadley cell (HC).
However, recent studies reveal that the location of the STJ is poorly correlated with the …

The relation between the seasonal changes in jet characteristics and the Pacific midwinter minimum in eddy activity

J Yuval, H Afargan, Y Kaspi - Geophysical Research Letters, 2018 - Wiley Online Library
This study relates the occurrence of the midwinter minimum in eddy activity over the North
Pacific with the seasonality in jet characteristics. During winter, the Pacific jet core is typically …

Long-term trends of the atmospheric circulation and moist static energy budget in the JRA-55 reanalysis

CLE Franzke, N Harnik - Journal of Climate, 2023 - journals.ametsoc.org
The atmospheric circulation response to global warming is an important problem that is
theoretically still not well understood. This is a particular issue since climate model …

Energetics of transient eddies related to the midwinter minimum of the North Pacific storm-track activity

S Okajima, H Nakamura, Y Kaspi - Journal of climate, 2022 - journals.ametsoc.org
Storm-track activity over the North Pacific (NP) climatologically exhibits a clear minimum in
midwinter, when the westerly jet speed sharply maximizes. This counterintuitive …

A dynamical systems characterisation of atmospheric jet regimes

G Messori, N Harnik, E Madonna… - Earth System …, 2020 - esd.copernicus.org
Atmospheric jet streams are typically separated into primarily eddy-driven, or polar-front jets
and primarily thermally-driven, or" subtropical" jets. Some regions also display merged jets …

A midwinter minimum in North Atlantic storm track intensity in years of a strong jet

H Afargan, Y Kaspi - Geophysical Research Letters, 2017 - Wiley Online Library
This study investigates the occurrence of a midwinter suppression in synoptic eddy activity
within the North Atlantic storm track. It is found that eddy kinetic energy over the Atlantic is …