Article
Meteorology & Atmospheric Sciences
Shanshan Liu, Chaoxia Yuan, Jing-jia Luo, Xiaofan Ma, Xuecheng Zhou, Toshio Yamagata
Summary: This study investigates the change in the Indian Ocean dipole (IOD) from the preindustrial period to the mid-Holocene, based on climate models. The results show that the IOD variability weakens by 14%, mainly due to the suppression of western-pole sea surface temperature variability. This change is influenced by altered mean-state currents and leads to alterations in the IOD variability.
JOURNAL OF CLIMATE
(2023)
Article
Oceanography
Xiaolin Zhang, Alyssa R. Atwood, Bappaditya Nag, Kim M. Cobb
Summary: This study investigates the characteristics of the tropical Pacific annual cycle and the El Nino/Southern Oscillation (ENSO) during the mid-Holocene. The results show that under mid-Holocene forcing, both ENSO variability and the amplitude of the tropical Pacific cold tongue's annual cycle are reduced, along with a modified annual cycle in ENSO variance. The weakened annual cycle of the cold tongue can be attributed to both an ocean dynamical response to westerly wind anomalies in the western equatorial Pacific and a thermodynamic response to local insolation changes in the eastern Pacific.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Geosciences, Multidisciplinary
Charan Teja Tejavath, Karumuri Ashok, Supriyo Chakraborty
Summary: Proxy and model-based studies suggest multi-scale temporal variability in the Indian summer monsoon (ISM). Using CESM1 atmospheric general circulation model, the study conducted multiple ensemble AGCM simulations for different historical periods, indicating stronger monsoon in Mid-Holocene and higher rainfall during the Medieval Warm Period in agreement with proxy studies. The simulations also suggest a northward migration of the ITCZ and strengthening of subtropical high in the northwestern Pacific during the Mid-Holocene, influenced by orbital parameters like obliquity and precision.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
Wei Chen
Summary: This study finds that the impact of ENSO on the sea surface temperature anomalies in the northeast tropical Atlantic weakened after the mid-1980s, while remaining stable in the northwest tropical Atlantic. The El Nino-related teleconnections shifted westward, leading to an increase in positive sea surface temperature anomalies in the NWTA and a decrease in the NETA.
JOURNAL OF CLIMATE
(2022)
Article
Geography, Physical
Senyan Nie, Wenshen Xiao, Rujian Wang
Summary: The Antarctic Peninsula is sensitive to global climate changes. The study reveals that the changes in surface water conditions in the region over the past 5.8 kyr have been influenced by the presence and duration of sea ice, with a cooling trend observed during the late Holocene. Frequency analysis suggests that solar irradiance and El Niño-Southern Oscillation activities have played a role in the variability of sea ice in the Antarctic Peninsula.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geography, Physical
Graham R. Mushet, Eduard G. Reinhardt, Ryan Whitehouse, Brian F. Cumming
Summary: The Holocene Thermal Maximum is well-understood with regards to its external drivers and regional expressions, particularly in lake ecosystems. However, the connection between mid-to-late Holocene climate, drivers, and lake response is less understood, especially in western North America. A study of a small lake in British Columbia revealed shifts in effective moisture levels and the influence of Pacific ocean-atmosphere processes on late Holocene declines in effective moisture throughout the southern Interior Plateau.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Shengli Yang, Xiaojing Liu, Ting Cheng, Yuanlong Luo, Qiong Li, Li Liu, Zixuan Chen
Summary: Aeolian sediments in the Maqu region of the eastern Tibetan Plateau provide key information on aeolian history and past environmental changes. The study reveals that aeolian activities have been occurring since the early Holocene, with a trend of stepwise weakening from the early Holocene to the present. The formation of paleosols after approximately 8,000 years ago episodically interrupted aeolian activities in the Gannan region.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Mingming Zhang, Zhaojun Bu, Shasha Liu, Jie Chen, Yaxin Cui
Summary: The Hani peatland in Northeast Asia underwent wet, moderate moisture, and dry conditions over the past 7766 years, with corresponding changes in vegetation and hydrology. These changes were primarily influenced by solar irradiation and ENSO activity.
Article
Geography, Physical
Pengchao Zhou, Hong Yan, Tao Han, Chengcheng Liu, Haotian Yang, Fan Luo, Shan Liu, Zhe Wang, Xingyan Shen, Ge Shi, John Dodson, Weijian Zhou
Summary: In this study, ENSO variability was reconstructed using subfossil giant clam shells from the northern South China Sea. The findings show an intensification of ENSO variability during the mid to late Holocene. This research provides important insights for paleo-ENSO reconstructions.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geography, Physical
Huanyu Sun, Xingqi Liu, Xin Mao, Weihan Jia, Ulrike Herzschuh
Summary: By examining a sediment core from Lake Qionghai on the Tibetan Plateau, the study reveals the impact of the El Nin similar to o-Southern Oscillation (ENSO) on the Indian summer monsoon (ISM) variability on the centennial timescale during the Holocene. The results show a drying climate and occurrence of drought events that are consistent with enhanced ENSO activity, indicating a modulation of ISM intensity by ENSO variability. Both ISM oscillations and ENSO variability exhibit significant cyclicities, with a significant negative relationship between the two.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Zijuan Yong, Liang Chen, Zhaodong Feng
Summary: This study reconstructed mid-Holocene precipitation variations in the Luoyang Basin based on pollen data. It found that the region experienced three dry intervals and two wet intervals during the data-covering period. The comparison with neighboring areas suggests that the changes in precipitation in the Central Plains of China were broadly correspondent with those in the southern neighboring areas.
Article
Meteorology & Atmospheric Sciences
Weiyi Sun, Bin Wang, Qiong Zhang, Deliang Chen, Guonian Lu, Jian Liu
Summary: Understanding the impact of Saharan vegetation changes on the climate of the Middle East is crucial, as it can significantly influence precipitation patterns in the region. The greening of the Sahara leads to increased late winter and early spring precipitation in the Middle East, while a lack of vegetation in the Sahara results in drier conditions in the region.
JOURNAL OF CLIMATE
(2021)
Article
Environmental Sciences
Lander R. Crespo, Arthur Prigent, Noel Keenlyside, Shunya Koseki, Lea Svendsen, Ingo Richter, Emilia Sanchez-Gomez
Summary: The Atlantic Nino is predicted to weaken in response to global warming, with a reduction in variability by the end of the century. This weakening could potentially impact climate conditions and seasonal predictions in many regions.
NATURE CLIMATE CHANGE
(2022)
Article
Geosciences, Multidisciplinary
Xinxin Wang, Xianyu Huang, Hongyan Zhao, Dirk Sachse
Summary: It is increasingly evident that China experienced significant hydrological changes during the mid-to-late Holocene transition, which may have promoted the development of mixed rice and millet farming on the southeast coast of China. The study reveals a large positive shift in the leaf wax record of δD-C29 from 4.7 to 3.8 ka, possibly due to a more El Nino-like mean state in the tropical Pacific Ocean.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Enhui Liao, Laure Resplandy, Junjie Liu, Kevin W. Bowman
Summary: The El Nino Southern Oscillation (ENSO) is a major driver of atmospheric CO2 interannual variability and affects ocean CO2 flux. Earth system models project weaker ocean CO2 flux anomalies in the future, mainly due to stronger compensation in ocean biogeochemical changes and a reduced influence of ENSO on CO2 transfer.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geography, Physical
Zhiping Tian, Dabang Jiang
Article
Meteorology & Atmospheric Sciences
Zhiping Tian, Tim Li, Dabang Jiang
JOURNAL OF CLIMATE
(2018)
Article
Geography, Physical
Xiangyu Li, Dabang Jiang, Zhiping Tian, Yibo Yang
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2018)
Article
Meteorology & Atmospheric Sciences
Dabang Jiang, Yue Sui, Xianmei Lang, Zhiping Tian
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2018)
Article
Geography, Physical
Zhiping Tian, Dabang Jiang
Article
Environmental Sciences
Chen Wei, Jiang Da-Bang, Lang Xian-Mei, Tian Zhi-Ping
Summary: "Most CMIP5 models underestimate surface air temperature over China in winter and summer. Through the weather regime method, it was found that large-scale dynamics and non-dynamical processes contribute to temperature biases and inter-model spread. The clustering of weather regimes suggests that improving regional processes simulation could enhance model performance, with the use of multi-model mean recommended for better performance."
ADVANCES IN CLIMATE CHANGE RESEARCH
(2021)
Article
Meteorology & Atmospheric Sciences
Zhiping Tian, Dan Hu, Xianmei Lang, Dabang Jiang
Summary: The intensity changes of the East Asian summer monsoon (EASM) over the 21st century are complex and model-dependent, with slight strengthening based on east-west thermal contrast indices and weakening trends based on other categories of indices. The meridional wind index shows a significant strengthening of EASM intensity due to increased land-sea thermal contrasts, with certain relationships observed between this index and other EASM indices. Projections are generally consistent between ensemble means of models, but with varying magnitudes.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Multidisciplinary Sciences
Dan Hu, Dabang Jiang, Zhiping Tian, Xianmei Lang
Summary: This study retrospectively investigates the skill of climate models in predicting near-surface air temperature changes in China from the Third, Fourth, and Fifth Assessment Reports of IPCC. The models show skill in projecting subsequent climatology and trends of temperature changes in China, with cold biases against observations in most areas. Weighting the model projections narrows the uncertainty range, and emission scenarios have a larger impact on the trends rather than the climatology of near-term temperature projections.
Article
Meteorology & Atmospheric Sciences
Dan Hu, Dabang Jiang, Zhiping Tian, Xianmei Lang
Summary: This study investigates the performance and projection of China's temperature seasonal cycle using global climate models. The results show that the models can reasonably capture the observed characteristics and project a delay and reduction in the phase and amplitude of the temperature seasonal cycle in China in the future.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
Jiawen Shi, Dabang Jiang, Zhiping Tian, Xianmei Lang
Summary: Using data from paleoclimate experiments, this study examines the interannual variability change in global-scale surface air temperature during the Last Glacial Maximum (LGM). The results show that the LGM interannual temperature variability increased by 20% globally, mainly due to the increase in the meridional temperature gradient. Changes in underlying surface properties and the relationship between the meridional temperature gradient and temperature variability were also observed. Adjustment of latent and sensible heat fluxes played a role in interannual temperature variability in tropical land regions.
JOURNAL OF CLIMATE
(2022)
Article
Meteorology & Atmospheric Sciences
Wei Chen, Dabang Jiang, Xianmei Lang, Zhiping Tian
Summary: The performance of CMIP5 and CMIP6 climate models in simulating weather regimes over East Asia is evaluated in this study. The results show that both generations of models can reasonably reproduce the circulation patterns of weather regimes but underestimate their intensities and occurrence frequencies while overestimating certain frequencies. Compared to CMIP5, CMIP6 models perform better in terms of overall performance and linear frequency trends.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
Dan Hu, Zhiping Tian, Xianmei Lang, Dabang Jiang
Summary: Climate models are widely used to project future climate changes and analyze underlying mechanisms. The skill of these models in projecting future precipitation changes over global land has been analyzed. It was found that the models have robust skills in projecting global mean land precipitation changes, but are less skillful at regional scales, likely due to lower signal-to-noise ratios.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Geosciences, Multidisciplinary
Zhiping Tian, Dabang Jiang, Ran Zhang, Baohuang Su
Summary: Transient simulations of the Holocene reveal a slight decrease in global mean surface air temperature from 11.5 to 7.5 ka due to changes in orbital insolation and greenhouse gas concentrations, followed by continuous warming until the preindustrial period mainly driven by increased greenhouse gas concentrations. The simulated temperature changes at 6 ka are consistent with other model results and are overall stronger than the arithmetic mean results for Middle Holocene simulations.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2022)
Article
Geosciences, Multidisciplinary
Jule Xiao, Shengrui Zhang, Jiawei Fan, Ruilin Wen, Dayou Zhai, Zhiping Tian, Dabang Jiang
CLIMATE OF THE PAST
(2018)
