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Summer heat extremes in northern continents linked to developing ENSO events 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2020, 15 (7)
作者:  Luo, Ming;  Lau, Ngar-Cheung
收藏  |  浏览/下载:22/0  |  提交时间:2020/08/18
summer heat extremes  El Nino-Southern Oscillation  interannual variability  circumglobal teleconnection  jet stream  
Intensification of the Atlantic Multidecadal Variability Since 1870: Implications and Possible Causes 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (11)
作者:  Si, Dong;  Jiang, Dabang;  Wang, Huijun
收藏  |  浏览/下载:19/0  |  提交时间:2020/08/18
Atlantic multidecadal variability intensification  climate variability and climate extremes  anthropogenic aerosol emissions  CESM single-forcing runs  
Coupling of Indo-Pacific climate variability over the last millennium 期刊论文
NATURE, 2020
作者:  Chow, Brian W.;  Nunez, Vicente;  Kaplan, Luke;  Granger, Adam J.;  Bistrong, Karina;  Zucker, Hannah L.;  Kumar, Payal;  Sabatini, Bernardo L.;  Gu, Chenghua
收藏  |  浏览/下载:60/0  |  提交时间:2020/05/13

Coral records indicate that the variability of the Indian Ocean Dipole over the last millennium is strongly coupled to variability in the El Nino/Southern Oscillation and that recent extremes are unusual but not unprecedented.


The Indian Ocean Dipole (IOD) affects climate and rainfall across the world, and most severely in nations surrounding the Indian Ocean(1-4). The frequency and intensity of positive IOD events increased during the twentieth century(5) and may continue to intensify in a warming world(6). However, confidence in predictions of future IOD change is limited by known biases in IOD models(7) and the lack of information on natural IOD variability before anthropogenic climate change. Here we use precisely dated and highly resolved coral records from the eastern equatorial Indian Ocean, where the signature of IOD variability is strong and unambiguous, to produce a semi-continuous reconstruction of IOD variability that covers five centuries of the last millennium. Our reconstruction demonstrates that extreme positive IOD events were rare before 1960. However, the most extreme event on record (1997) is not unprecedented, because at least one event that was approximately 27 to 42 per cent larger occurred naturally during the seventeenth century. We further show that a persistent, tight coupling existed between the variability of the IOD and the El Nino/Southern Oscillation during the last millennium. Indo-Pacific coupling was characterized by weak interannual variability before approximately 1590, which probably altered teleconnection patterns, and by anomalously strong variability during the seventeenth century, which was associated with societal upheaval in tropical Asia. A tendency towards clustering of positive IOD events is evident in our reconstruction, which-together with the identification of extreme IOD variability and persistent tropical Indo-Pacific climate coupling-may have implications for improving seasonal and decadal predictions and managing the climate risks of future IOD variability.


  
Unprecedented recent late-summer warm extremes recorded in tree-ring density on the Tibetan Plateau 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2020, 15 (2)
作者:  Duan, Jianping;  Wu, Peili;  Ma, Zhuguo;  Duan, Yawen
收藏  |  浏览/下载:17/0  |  提交时间:2020/07/02
temperature extremes  tree-ring density  Tibetan Plateau  climate change  temperature variability  
Declining US regional and continental trends in intra-annual and interannual extreme temperature swings 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019
作者:  DeGaetano, Arthur T.;  Lim, Li-Sha
收藏  |  浏览/下载:13/0  |  提交时间:2020/02/17
intra-annual variability  temperature extremes  time series  United States  
Metrics for understanding large-scale controls of multivariate temperature and precipitation variability 期刊论文
CLIMATE DYNAMICS, 2019, 53: 3805-3823
作者:  O&;  39;Brien, John P.;  39;Brien, Travis A.
收藏  |  浏览/下载:23/0  |  提交时间:2019/11/27
ENSO  El Nino  La Nina  PDO  AMO  Global change  Climate variability  Teleconnections  California  Joint extremes  Precipitation extremes  Non-stationarity  
The Dominant Role of Extreme Precipitation Events in Antarctic Snowfall Variability 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (6) : 3502-3511
作者:  Turner, John;  Phillips, Tony;  Thamban, Meloth;  Rahaman, Waliur;  Marshall, Gareth J.;  Wille, Jonathan D.;  Favier, Vincent;  Winton, V. Holly L.;  Thomas, Elizabeth;  Wang, Zaomin;  van den Broeke, Michiel;  Hosking, J. Scott;  Lachlan-Cope, Tom
收藏  |  浏览/下载:22/0  |  提交时间:2019/11/26
Antarctica  precipitation  snowfall  extremes  variability  
Drought severity based on the SPI index and its relation to the ENSO and PDO climatic variability modes in the regions North and Northwest of the State of Rio de Janeiro - Brazil 期刊论文
ATMOSPHERIC RESEARCH, 2018, 212: 91-105
作者:  de Oliveira-Junior, Jose Francisco;  de Gois, Givanildo;  de Bodas Terassi, Paulo Miguel;  da Silva Junior, Carlos Antonio;  Cavalcante Blanco, Claudio Jose;  Sobral, Bruno Serafini;  Cruz Gasparini, Kaio Allan
收藏  |  浏览/下载:14/0  |  提交时间:2019/04/09
Drought monitoring  Statistical indexes  Precipitation  Climatic extremes  Interannual variability  Oceanic Nino index  
Biased Estimates of Changes in Climate Extremes From Prescribed SST Simulations 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (16) : 8500-8509
作者:  Fischer, E. M.;  Beyerle, U.;  Schleussner, C. F.;  King, A. D.;  Knutti, R.
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
extremes  climate variability  attribution  climate model  
Local-scale changes in mean and heavy precipitation in Western Europe, climate change or internal variability? 期刊论文
CLIMATE DYNAMICS, 2018, 50: 4745-4766
作者:  Aalbers, Emma E.;  Lenderink, Geert;  van Meijgaard, Erik;  van den Hurk, Bart J. J. M.
收藏  |  浏览/下载:25/0  |  提交时间:2019/04/09
Regional climate change  Internal variability  Precipitation extremes  Signal-to-noise  Initial-condition RCM-GCM ensemble  EURO-CORDEX