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QBO deepens MJO convection

Journal Article · · Nature Communications
Abstract

The underlying mechanism that couples the Quasi-Biennial Oscillation (QBO) and the Madden-Julian oscillation (MJO) has remained elusive, challenging our understanding of both phenomena. A popular hypothesis about the QBO-MJO connection is that the vertical extent of MJO convection is strongly modulated by the QBO. However, this hypothesis has not been verified observationally. Here we show that the cloud-top pressure and brightness temperature of deep convection and anvil clouds are systematically lower in the easterly QBO (EQBO) winters than in the westerly QBO (WQBO) winters, indicating that the vertical growth of deep convective systems within MJO envelopes is facilitated by the EQBO mean state. Moreover, the deeper clouds during EQBO winters are more effective at reducing longwave radiation escaping to space and thereby enhancing longwave cloud-radiative feedback within MJO envelopes. Our results provide robust observational evidence of the enhanced MJO activity during EQBO winters by mean state changes induced by the QBO.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0016223
OSTI ID:
1989076
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 14; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (79)

An examination of the nature of global MODIS cloud regimes journal July 2014
Tropical climate change control of the lower stratospheric circulation journal February 2015
The effect of atmospheric radiative heating by clouds on the Madden-Julian Oscillation: CLOUD-RADIATIVE EFFECTS ON THE MJO journal June 2015
Modulation of the boreal wintertime Madden-Julian oscillation by the stratospheric quasi-biennial oscillation: Modulation of the MJO by the QBO journal February 2016
Relationships between radiation, clouds, and convection during DYNAMO: Radiation, Clouds, and Convection in MJO journal March 2017
Convectively Driven Tropopause-Level Cooling and Its Influences on Stratospheric Moisture journal January 2018
QBO-MJO Connection journal March 2018
The effect of the quasi-biennial oscillation on the Madden-Julian oscillation in the Met Office Unified Model Global Ocean Mixed Layer configuration journal April 2018
Diurnal cycle of rainfall and convection over the Maritime Continent using TRMM and ISCCP journal May 2019
Australian-Indonesian monsoon book January 2007
Arctic sea ice and the Madden–Julian Oscillation (MJO) journal January 2014
The quasi-biennial oscillation journal May 2001
Influence of the Madden-Julian Oscillation on wintertime surface air temperature and cold surges in east Asia journal January 2005
Tropical climate described as a distribution of weather states indicated by distinct mesoscale cloud property mixtures journal January 2005
ENSO influence on zonal mean temperature and ozone in the tropical lower stratosphere: ENSO IN TROPICAL LOWER STRATOSPHERE journal August 2009
Modulation of radiative heating by the Madden-Julian Oscillation and convectively coupled Kelvin waves as observed by CloudSat: MJO/KW RADIATIVE ANOMALY USING CLOUDSAT journal November 2011
A mechanism denial study on the Madden-Julian Oscillation: MJO MECHANISM DENIAL STUDY journal April 2011
Differences in Vertical Structure of the Madden-Julian Oscillation Associated With the Quasi-Biennial Oscillation journal May 2018
Fifty Years of Research on the Madden‐Julian Oscillation: Recent Progress, Challenges, and Perspectives journal August 2020
Large‐Scale Characteristics of Tropical Convective Systems Through the Prism of Cloud Regime journal March 2020
QBO‐MJO Connection in CMIP5 Models journal June 2020
Four Theories of the Madden‐Julian Oscillation journal July 2020
MJO Propagation Across the Maritime Continent: Are CMIP6 Models Better Than CMIP5 Models? journal June 2020
The Lack of QBO‐MJO Connection in CMIP6 Models journal June 2020
Modeling Evidence of QBO‐MJO Connection: A Case Study journal October 2020
The Unique Characteristics and Potential Mechanisms of the MJO‐QBO Relationship journal August 2020
Interannual variations in the height of the tropical tropopause journal January 1985
Evidence of a downward-propagating, annual wind reversal in the equatorial stratosphere journal March 1961
Fluctuations in Equatorial Stratospheric Winds journal March 1961
The influence of the quasi-biennial oscillation on the Madden–Julian oscillation journal June 2021
Thermodynamic control of anvil cloud amount journal July 2016
Cloud and aerosol properties, precipitable water, and profiles of temperature and water vapor from MODIS journal February 2003
The MODIS cloud products: algorithms and examples from terra journal February 2003
The MODIS Cloud Optical and Microphysical Products: Collection 6 Updates and Examples From Terra and Aqua journal January 2017
Modulation of Hurricane Activity in the Gulf of Mexico by the Madden-Julian Oscillation journal March 2000
The Influence of the Madden–Julian Oscillation on Precipitation in Oregon and Washington* journal August 2003
On The Relationship between the QBO and Tropical Deep Convection journal August 2003
Detection of a 40–50 Day Oscillation in the Zonal Wind in the Tropical Pacific journal July 1971
Description of Global-Scale Circulation Cells in the Tropics with a 40–50 Day Period journal September 1972
Radiation Budget of the Tropical Intraseasonal Oscillation journal August 2004
An All-Season Real-Time Multivariate MJO Index: Development of an Index for Monitoring and Prediction journal August 2004
An Observed Connection between the North Atlantic Oscillation and the Madden–Julian Oscillation journal January 2009
Influence of the Madden–Julian Oscillation on Summertime Cloud-to-Ground Lightning Activity over the Continental United States journal October 2009
Dynamical Mechanism for the Increase in Tropical Upwelling in the Lowermost Tropical Stratosphere during Warm ENSO Events journal July 2010
Global Variability of Mesoscale Convective System Anvil Structure from A-Train Satellite Data journal November 2010
Madden–Julian Oscillation: Bridging Weather and Climate journal December 2013
MetPy: A Meteorological Python Library for Data Analysis and Visualization journal October 2022
Responses of Tropical Deep Convection to the QBO: Cloud-Resolving Simulations journal September 2015
The MJO as a Dispersive, Convectively Coupled Moisture Wave: Theory and Observations journal March 2016
Influence of the Stratospheric Quasi-Biennial Oscillation on the Madden–Julian Oscillation during Austral Summer journal April 2017
Vertical Velocity Profiles in Convectively Coupled Equatorial Waves and MJO: New Diagnoses of Vertical Velocity Profiles in the Wavenumber–Frequency Domain journal May 2020
Revisiting the Quasi-Biennial Oscillation as Seen in ERA5. Part I: Description and Momentum Budget journal March 2021
On the Effect of Surface Friction and Upward Radiation of Energy on Equatorial Waves journal March 2022
QBO Wind Influence on MJO-Induced Temperature Anomalies in the Upper Troposphere and Lower Stratosphere in an Idealized Model journal September 2022
Stratospheric Modulation of the MJO through Cirrus Cloud Feedbacks journal September 2022
Spatial–Intensity Variations in Extreme Precipitation in the Contiguous United States and the Madden–Julian Oscillation journal July 2012
Tropical Cold-Point Tropopause: Climatology, Seasonal Cycle, and Intraseasonal Variability Derived from COSMIC GPS Radio Occultation Measurements journal August 2012
Propagating versus Nonpropagating Madden–Julian Oscillation Events journal January 2014
The Madden–Julian Oscillation’s Impacts on Worldwide Tropical Cyclone Activity journal March 2014
Role of Longwave Cloud–Radiation Feedback in the Simulation of the Madden–Julian Oscillation journal September 2015
Propagating and Nonpropagating MJO Events over Maritime Continent* journal October 2015
Barrier Effect of the Indo-Pacific Maritime Continent on the MJO: Perspectives from Tracking MJO Precipitation journal May 2017
Stratospheric Control of the Madden–Julian Oscillation journal March 2017
The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2) journal July 2017
On the Sensitivity of Convectively Coupled Equatorial Waves to the Quasi-Biennial Oscillation journal August 2019
Radiative Feedbacks Associated with the Madden–Julian Oscillation journal September 2019
Variability in QBO Temperature Anomalies on Annual and Decadal Time Scales journal January 2021
The MJO-QBO Relationship in a GCM with Stratospheric Nudging journal March 2021
Can the GPM IMERG Final Product Accurately Represent MCSs’ Precipitation Characteristics over the Central and Eastern United States? journal January 2020
A Process-Based Validation of GPM IMERG and Its Sources Using a Mesoscale Rain Gauge Network in the West African Forest Zone journal April 2020
Advances in Geostationary-Derived Longwave Fluxes for the CERES Synoptic (SYN1deg) Product journal March 2016
IMERG V06: Changes to the Morphing Algorithm journal December 2019
The Relationship between the Madden–Julian Oscillation and U.S. Violent Tornado Outbreaks in the Spring journal June 2013
The Boreal Summer Intraseasonal Oscillation (BSISO): A Review journal January 2021
Influence of the Stratospheric QBO on ENSO Variability [成層圏QBOのENSO変動への影響] journal January 1992
GPM IMERG Final Precipitation L3 Half Hourly 0.1 degree x 0.1 degree V06 dataset January 2019
NCEP/CPC L3 Half Hourly 4km Global (60S - 60N) Merged IR V1 dataset January 2017
Multi-scale meteorological conceptual analysis of observed active fire hotspot activity and smoke optical depth in the Maritime Continent journal January 2012
The diurnal cycle of the clouds extending above the tropical tropopause observed by spaceborne lidar journal April 2020

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