Intensification of Pacific tropical instability waves over the recent three decades

M Wang, SP Xie, H Sasaki, M Nonaka, Y Du - Nature Climate Change, 2024 - nature.com
Tropical instability waves (TIWs) arise from shear instabilities of equatorial Pacific Ocean
currents and are important for the tropical climate and the El Niño–Southern Oscillation. Yet …

Wind dependencies of deep cycle turbulence in the equatorial cold tongues

JN Moum, WD Smyth, KG Hughes… - Journal of Physical …, 2023 - journals.ametsoc.org
Several years of moored turbulence measurements from χ pods at three sites in the
equatorial cold tongues of Atlantic and Pacific Oceans yield new insights into proxy …

Ocean mixing induced by three-dimensional structure of equatorial mode tropical instability waves in the Pacific Ocean

L Fang, K Ma, C Liu, X Wang, F Wang - Frontiers in Marine Science, 2023 - frontiersin.org
Observations have revealed that tropical instability waves (TIWs) play an important role in
the ocean mixing of the equatorial thermocline. However, most studies have not …

Multi‐Scale Temporal Variability of Turbulent Mixing During a Monsoon Intra‐Seasonal Oscillation in the Bay of Bengal: An LES Study

HT Pham, S Sarkar, L Johnson… - Journal of …, 2023 - Wiley Online Library
A process study using large‐eddy simulations is carried out to explore the dominant 1‐D
processes that affect mixed layer (ML) properties during an event of summer Monsoon Intra …

Deep-Cycle Turbulence in the Upper Pacific Equatorial Ocean: Characterization by LES and Heat Flux Parameterization

HT Pham, S Sarkar, WD Smyth… - Journal of Physical …, 2024 - journals.ametsoc.org
Abstract Observations in the Pacific Equatorial Undercurrents (EUC) show that the nighttime
deep-cycle turbulence (DCT) in the marginal-instability (MI) layer of the EUC exhibits …

Eddy‐mediated turbulent mixing of oxygen in the equatorial Pacific

YA Eddebbar, DB Whitt, A Verdy… - Journal of …, 2024 - Wiley Online Library
In the tropical Pacific, weak ventilation and intense microbial respiration at depth give rise to
a low dissolved oxygen (O2) environment that is thought to be ventilated primarily by the …

Turbulence from tropical instability waves in the equatorial cold tongues: Quantification from multiyear moored records

S Iyer, JN Moum - Journal of Geophysical Research: Oceans, 2024 - Wiley Online Library
Tropical instability waves (TIWs) are identified in three multiyear equatorial mooring records
in Pacific and Atlantic cold tongues to evaluate how TIWs modulate turbulence. At 0°, 140° …

CATKE: a turbulent-kinetic-energy-based parameterization for ocean microturbulence with dynamic convective adjustment

GLC Wagner, A Hillier, NC Constantinou… - Authorea …, 2023 - authorea.com
We describe CATKE, a parameterization for ocean microturbulence with scales between 1
and 100 meters. CATKE is a one-equation model that predicts diffusive turbulent vertical …

Rain impacts on the surface atmosphere and upper ocean in the central equatorial Pacific

DB Whitt - Journal of Physical Oceanography, 2022 - journals.ametsoc.org
The impacts of rainy days (> 24 mm) on the physics of the surface atmosphere and upper
ocean are characterized in the central Pacific Ocean (140°–170° W) on the equator, where …

Numerical simulation of upper ocean responses to the passage of a submesoscale eddy

Y Fan, A Rydbeck, P Thoppil, Z Yu - Ocean Modelling, 2023 - Elsevier
In this study, a large eddy simulation model (LES) is used to investigate the effect of an
idealized westward propagating submesoscale eddy on ocean surface boundary layer …