Article
Meteorology & Atmospheric Sciences
Zhaoxiangrui He, Aiguo Dai, Mathias Vuille
Summary: The South American climate is influenced by both Atlantic Multidecadal Variability (AMV) and Pacific Multidecadal Variability (PMV), with complex correlations observed between precipitation and temperature changes. The perturbations in local circulations play a key role in driving these anomalies, with varying patterns observed in different seasons and regions.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Paolo Ruggieri, Alessio Bellucci, Dario Nicoli, Panos J. Athanasiadis, Silvio Gualdi, Christophe Cassou, Fred Castruccio, Gokhan Danabasoglu, Paolo Davini, Nick Dunstone, Rosemary Eade, Guillaume Gastineau, Ben Harvey, Leon Hermanson, Said Qasmi, Yohan Ruprich-Robert, Emilia Sanchez-Gomez, Doug Smith, Simon Wild, Matteo Zampieri
Summary: The influence of the Atlantic multidecadal variability (AMV) on the North Atlantic storm track and eddy-driven jet in the winter season is assessed through analysis of idealized simulations using state-of-the-art coupled models. A robust extratropical response is found in the form of a wave train extending from the Pacific to the Nordic seas. In the warm phase of the AMV, the Atlantic storm track is typically contracted and the low-level jet is shifted towards the equator in the eastern Atlantic.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Jin-Sil Hong, Sang-Wook Yeh, Young-Min Yang
Summary: The authors investigated the interbasin interactions between the Pacific and Atlantic Oceans based on the phase relationship of Pacific decadal oscillation (PDO)/Atlantic multidecadal oscillation (AMO). They found that the characteristics of the interactions depend on whether the PDO and AMO phases are in phase or out of phase.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Jing Sun, Mojib Latif, Wonsun Park
Summary: The controversy over the nature of multidecadal climate variability in the North Atlantic region focuses on the roles of ocean circulation and atmosphere-ocean coupling. Research has shown that the interaction between the subpolar gyre and Atlantic meridional overturning circulation plays a crucial role in maintaining a delayed negative feedback necessary for the multidecadal oscillation. Additionally, there is a positive ocean-atmosphere feedback between sea surface temperature and low-level atmospheric circulation over the southern Greenland area, reinforcing multidecadal oscillation against dissipation.
JOURNAL OF CLIMATE
(2021)
Article
Oceanography
Hamed D. Ibrahim, Yunfang Sun
Summary: This study finds that the Atlantic multidecadal variability has significant impacts on the ocean temperature off northwest Africa. Wind plays a crucial role in driving the increase in sea surface temperature through heat exchange and transport. This has important implications for the marine fisheries in the region.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2022)
Article
Oceanography
Ruize Zhang, Shantong Sun, Zhaohui Chen, Haiyuan Yang, Lixin Wu
Summary: The Agulhas Current (AC) is an important part of global ocean circulation. Recent observations suggest that the AC has broadened and slightly weakened in the past few decades. However, high-resolution models show substantial internal variability of the AC on decadal to multidecadal time scales.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2023)
Article
Meteorology & Atmospheric Sciences
Chia-Wei Lan, Yen-Ting Hwang, Rong-You Chien, Agnes Ducharne, Min-Hui Lo
Summary: The representation of groundwater dynamics in land surface models and their roles in global precipitation variations have been studied recently. The incorporation of the groundwater component in climate models has led to higher soil moisture and diverse precipitation changes. However, the effects of groundwater on large-scale atmospheric energy transport, a fundamental atmospheric variable regulating Earth's climate, have not been thoroughly explored.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Chiyu Zhao, Xin Geng, Wenjun Zhang, Li Qi
Summary: This study finds that the Atlantic multidecadal oscillation (AMO) can affect the El Nino-Southern Oscillation (ENSO). It shows that during a negative AMO phase, the atmospheric anomaly amplitudes in the tropical Pacific for El Nino events are more pronounced and for La Nina events are weaker, compared to a positive AMO phase. This discrepancy may be largely attributed to the decadal modulation of AMO.
JOURNAL OF CLIMATE
(2022)
Article
Oceanography
Zhanqiu Gong, Yusen Liu, Cheng Sun, Jing Zhang, Jianping Li, Chunming Shi
Summary: This study reveals a seesaw pattern of tropical cyclone (TC) activity between the North Atlantic and eastern North Pacific, influenced by the Atlantic Meridional Overturning Circulation (AMOC) and sea surface temperature anomalies. The results indicate that variations in AMOC contribute to the contrasting backgrounds for TC formation and development, leading to the reversed relationship in TC activity between the two ocean basins. The atmospheric-NAO-based AMOC indicator plays a key role in depicting this multidecadal seesaw pattern, potentially improving the decadal prediction of North Atlantic/eastern North Pacific TCs.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Meteorology & Atmospheric Sciences
W. K. M. Lai, J. I. Robson, L. J. Wilcox, N. Dunstone
Summary: This study compares the key processes governing internal Atlantic multidecadal variability (AMV) in two resolutions of HadGEM3-GC3.1 and finds that both models simulate AMV with a time scale related to ocean and atmosphere circulation changes, but there are differences in the details.
JOURNAL OF CLIMATE
(2022)
Article
Oceanography
Kathryn L. Gunn, K. McMonigal, Lisa M. Beal, Shane Elipot
Summary: The global freshwater cycle is intensifying, especially in Indian Ocean rim countries. However, due to the lack of observations and model biases, it is still uncertain how the Indian Ocean's freshwater cycle has responded to climate change and its variability at different time scales. This study estimates the magnitude and variability of the Indian Ocean's freshwater budget using monthly oceanic data from 2016 to 2018. The findings suggest that the Indian Ocean has remained net evaporative since the 1980s and shows seasonal and monthly variability.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2022)
Article
Meteorology & Atmospheric Sciences
Zhangqi Dai, Bin Wang, Ling Zhu, Jian Liu, Weiyi Sun, Longhui Li, Guonian Lu, Liang Ning, Mi Yan, Kefan Chen
Summary: Atlantic Multidecadal Variability (AMV) is an important driver of regional and global climate variability. This study examines the secular changes of AMV over the past 2000 years and its response to external forcing. Proxy data and model simulations consistently show a significant 60-year AMV during AD 1250-1860, which is absent during AD 1-1249. Active volcanic eruptions during the period 1250-1860 amplify AMV and shift its frequency peak from 20-40 years to 60 years. Volcanoes contribute to the prolonged periodicity of AMV by sustaining Arctic cooling and delaying subpolar sea ice melting, reducing evaporation, and increasing surface salinity. These findings enhance our understanding of nonstationary AMV and the role of external forcing over the past two millennia.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Wenjuan Huo, Ziniu Xiao, Liang Zhao
Summary: This study systematically investigates the response of the tropical Pacific to the 11-year solar activity cycle and proposes a new mechanism to explain the decadal variations. The solar radiation directly affects the warm water volume and redistributes the solar-related heat through ocean dynamic processes, leading to the maintenance of Pacific Walker circulation anomalies and a negative feedback to the transition of warm water volume in the eastern Pacific. Observations and experiments show a lagged response in the tropical Pacific climate system.
JOURNAL OF CLIMATE
(2023)
Article
Meteorology & Atmospheric Sciences
Marius Arthun, Robert C. J. Wills, Helen L. Johnson, Leon Chafik, Helene R. Langehaug
Summary: This study isolates the mechanisms driving North Atlantic SST variability on decadal time scales and identifies a dominant 13-18 year decadal mode of atmosphere-ocean variability in the region. Large-scale atmospheric circulation anomalies drive SST anomalies through air-sea heat fluxes and delayed ocean circulation changes, consistent with westward propagation of baroclinic Rossby waves.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Navid C. Constantinou, Andrew McC. Hogg
Summary: This study evaluates how the ocean's intrinsic variability leads to patterns of upper-ocean heat content that vary at decadal time scales. These patterns have the potential to feed back on the atmosphere and affect climate modes of variability. Results suggest that moving towards coupled climate models with higher oceanic resolution is crucial for improving climate projections and predicting decadal climate modes of variability accurately.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Zeng-Zhen Hu, Bohua Huang, Jieshun Zhu, Arun Kumar, Michael J. McPhaden
Article
Meteorology & Atmospheric Sciences
Oliver Watt-Meyer, Dargan M. W. Frierson
JOURNAL OF CLIMATE
(2019)
Review
Multidisciplinary Sciences
Wenju Cai, Lixin Wu, Matthieu Lengaigne, Tim Li, Shayne McGregor, Jong-Seong Kug, Jin-Yi Yu, Malte F. Stuecker, Agus Santoso, Xichen Li, Yoo-Geun Ham, Yoshimitsu Chikamoto, Benjamin Ng, Michael J. McPhaden, Yan Du, Dietmar Dommenget, Fan Jia, Jules B. Kajtar, Noel Keenlyside, Xiaopei Lin, Jing-Jia Luo, Marta Martin-Rey, Yohan Ruprich-Robert, Guojian Wang, Shang-Ping Xie, Yun Yang, Sarah M. Kang, Jun-Young Choi, Bolan Gan, Geon-Il Kim, Chang-Eun Kim, Sunyoung Kim, Jeong-Hwan Kim, Ping Chang
Article
Astronomy & Astrophysics
Bernard Bourles, Moacyr Araujo, Michael J. McPhaden, Peter Brandt, Gregory R. Foltz, Rick Lumpkin, Herve Giordani, Fabrice Hernandez, Nathalie Lefevre, Paulo Nobre, Edmo Campos, Ramalingam Saravanan, Janice Trotte-Duha, Marcus Dengler, Johannes Hahn, Rebecca Hummels, Joke F. Luebbecke, Mathieu Rouault, Leticia Cotrim, Adrienne Sutton, Markus Jochum, Renellys C. Perez
EARTH AND SPACE SCIENCE
(2019)
Article
Geosciences, Multidisciplinary
O. Watt-Meyer, D. M. W. Frierson, Q. Fu
GEOPHYSICAL RESEARCH LETTERS
(2019)
Article
Geosciences, Multidisciplinary
Akshaya C. Nikumbh, Arindam Chakraborty, G. S. Bhat, Dargan M. W. Frierson
GEOPHYSICAL RESEARCH LETTERS
(2020)
Article
Meteorology & Atmospheric Sciences
Tyler Cox, Kyle C. Armour, Gerard H. Roe, Aaron Donohoe, Dargan M. W. Frierson
Summary: This study focuses on the controls of atmospheric heat transport, specifically radiation and dynamics. The research shows that rotation rate and radiative tendency influence the strength of the Hadley cell and the efficiency of heat transport by eddies, with these controls not always operating independently and sometimes reinforcing each other. The study also examines how different components of atmospheric heat transport vary with latitude and how they sum to produce a smoothly varying total heat transport with latitude.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Akshaya C. Nikumbh, Arindam Chakraborty, G. S. Bhat, Dargan M. W. Frierson
Summary: The Indian summer monsoon rainfall variability is primarily influenced by the MISO and LPSs. This study focused on analyzing LPSs that produce extreme rainfall events in central India, finding that dynamic characteristics differ between LPSs triggering different sizes of events. Larger EREs are associated with slower, moister, and more intense LPSs occurring during the positive phase of MISO.
JOURNAL OF CLIMATE
(2021)
Article
Geosciences, Multidisciplinary
A. R. Atwood, D. S. Battisti, E. Wu, D. M. W. Frierson, J. P. Sachs
Summary: This study examines evidence for large-scale tropical hydroclimate changes over the Common Era based on a compilation of 67 tropical hydroclimate records. It reveals regionally coherent patterns on centennial time scales, with notable dissimilarities between regional hydroclimate changes and global-scale temperature reconstructions. The study also highlights the need for further research to understand the mechanisms of widespread tropical hydroclimate changes during the Little Ice Age.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Tyler Cox, Aaron Donohoe, Gerard H. Roe, Kyle C. Armour, Dargan M. W. Frierson
Summary: Despite differences in stationary eddy atmospheric heat transport (AHT) between the Northern and Southern Hemispheres, total AHT remains similar due to compensation by other dynamic components. The addition of midlatitude mountains does not significantly alter total AHT, as changes induced by orography are compensated by changes in other AHT components. In summary, the atmosphere has mechanisms in place - including dynamic, energetic, and diffusive processes - to maintain relatively invariant total AHT in response to various factors such as orography.
JOURNAL OF CLIMATE
(2022)
Article
Environmental Sciences
M. T. Dvorak, K. C. Armour, D. M. W. Frierson, C. Proistosescu, M. B. Baker, C. J. Smith
Summary: This study suggests that even with emissions halted, the Earth will continue to warm; we may already be on track to exceed 1.5 degrees Celsius of warming; and with decreasing greenhouse gas concentrations, the expected warming of 1.5 degrees Celsius may not occur until 2055.
NATURE CLIMATE CHANGE
(2022)
Article
Geosciences, Multidisciplinary
Tyler Cox, Aaron Donohoe, Kyle C. Armour, Dargan M. W. Frierson, Gerard H. Roe
Summary: Given the key role of atmospheric heat transport in Earth's climate system, documenting its changes over the satellite era is valuable. Clark et al. (2022) found significant discrepancies in trends of atmospheric heat transport among four reanalysis data sets. However, accounting for mass-conservation issues in reanalysis data sets revealed smaller magnitude trends and better agreement among the reanalyses. This highlights the importance of mass corrections in calculating atmospheric heat transport.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Martin Puy, Jerome Vialard, Matthieu Lengaigne, Eric Guilyardi, Pedro N. DiNezio, Aurore Voldoire, Magdalena Balmaseda, Gurvan Madec, Christophe Menkes, Michael J. Mcphaden
Review
Environmental Sciences
G. R. Foltz, P. Brandt, I Richter, B. Rodriguez-Fonsecao, F. Hernandez, M. Dengler, R. R. Rodrigues, J. O. Schmidt, L. Yu, N. Lefevre, L. Cotrim Da Cunha, M. J. Mcphaden, M. Araujo, J. Karstensen, J. Hahn, M. Martin-Rey, C. M. Patricola, P. Poli, P. Zuidema, R. Hummels, R. C. Perez, V Hatje, J. F. Luebbecke, I Palo, R. Lumpkin, B. Bourles, F. E. Asuquo, P. Lehodey, A. Conchon, P. Chang, P. Dandin, C. Schmid, A. Sutton, H. Giordani, Y. Xue, S. Illig, T. Losada, S. A. Grodsky, F. Gasparinss, T. Lees, E. Mohino, P. Nobre, R. Wanninkhof, N. Keenlyside, V Garcon, E. Sanchez-Gomez, H. C. Nnamchi, M. Drevillon, A. Storto, E. Remy, A. Lazar, S. Speich, M. Goes, T. Dorrington, W. E. Johns, J. N. Moum, C. Robinson, C. Perruches, R. B. de Souza, A. T. Gaye, J. Lopez-Paragess, P-A Monerie, P. Castellanos, N. U. Benson, M. N. Hounkonnou, J. Trotte Duha, R. Laxenairess, N. Reul
FRONTIERS IN MARINE SCIENCE
(2019)
Article
Geosciences, Multidisciplinary
Adrienne J. Sutton, Richard A. Feely, Stacy Maenner-Jones, Sylvia Musielwicz, John Osborne, Colin Dietrich, Natalie Monacci, Jessica Cross, Randy Bott, Alex Kozyr, Andreas J. Andersson, Nicholas R. Bates, Wei-Jun Cai, Meghan F. Cronin, Eric H. De Carlo, Burke Hales, Stephan D. Howden, Charity M. Lee, Derek P. Manzello, Michael J. McPhaden, Melissa Melendez, John B. Mickett, Jan A. Newton, Scott E. Noakes, Jae Hoon Noh, Solveig R. Olafsdottir, Joseph E. Salisbury, Uwe Send, Thomas W. Trull, Douglas C. Vandemark, Robert A. Weller
EARTH SYSTEM SCIENCE DATA
(2019)