Article
Environmental Sciences
Hua Su, Yanan Wei, Wenfang Lu, Xiao-Hai Yan, Hongsheng Zhang
Summary: By comparing different datasets, this study reveals that global ocean warming has been continuously increasing over the past three decades, with more heat being absorbed by the deeper ocean. The OPEN dataset, reconstructed through remote sensing, shows a unique warming pattern in the East Indian Ocean.
Article
Multidisciplinary Sciences
Qian Li, Matthew H. England, Andrew McC. Hogg, Stephen R. Rintoul, Adele K. Morrison
Summary: The abyssal ocean circulation plays a crucial role in the global meridional overturning circulation, enabling the redistribution of heat, carbon, oxygen, and nutrients throughout the world ocean. Recent observations indicate that the abyssal ocean is experiencing warming at high southern latitudes, but the drivers and implications of this warming remain unclear. This study uses a high-resolution model to show that under a high-emissions scenario, Antarctic meltwater contributes to the contraction of Antarctic Bottom Water, leading to increased warming and aging of the abyssal ocean over the next 30 years. The results highlight the importance of Antarctic meltwater in shaping abyssal ocean circulation and emphasize the potential long-term impacts on global ocean biogeochemistry and climate.
Article
Geosciences, Multidisciplinary
Gaopeng Xu, Ping Chang, Justin Small, Gokhan Danabasoglu, Stephen Yeager, Sanjiv Ramachandran, Qiuying Zhang
Summary: Ocean warming is a crucial factor in future climate changes. This study investigates the vertical structure changes in ocean heat content using high- and low-resolution future climate simulations. The results show that the high-resolution simulations better represent the actual observations and exhibit stronger warming in the upper ocean compared to the low-resolution simulations. This difference can be attributed to the different representations of vertical heat transport by mesoscale ocean eddies.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Editorial Material
Environmental Sciences
L. Caesar, S. Rahmstorf, G. Feulner
Summary: The comment on the paper argues that the analysis showing a positive correlation between Atlantic meridional overturning circulation (AMOC) strength and global mean surface temperature (GMST) over the last decades is incorrect, based on two points which are not justified. However, the authors defend their analysis with evidence from the modern period and multiple cycles of data.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Ecology
Michael M. Whitney
Summary: Coastal hypoxia is a growing environmental problem, and this study analyzes observational and projected data to find that coastal temperature and oxygen levels will continue to decline in the future, leading to further deterioration of coastal conditions. New hypoxic areas may emerge in high latitudes. Therefore, measures need to be taken to protect future water quality and ecosystem services.
Review
Environmental Sciences
Baskaran Abirami, Manikkam Radhakrishnan, Subramanian Kumaran, Aruni Wilson
Summary: Global warming has various effects on ocean ecosystems, including temperature, acidification, oxygen content, circulation, stratification, and nutrient inputs, posing a serious threat to the metabolism and distribution of marine microbes and affecting the overall ecosystem functioning.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Eric Mortenson, Andrew Lenton, Elizabeth H. Shadwick, Thomas W. Trull, Matthew A. Chamberlain, Xuebin Zhang
Summary: The ocean serves as a major sink for anthropogenic heat and carbon, but the trajectories of heat and CO2 uptake diverge over the 21st century due to regional differences in physical and chemical drivers. Regional variations in heat-to-carbon uptake ratios will result in coherent regional patterns for sea surface warming and acidification by the end of this century.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Chen Zhou, Mark D. Zelinka, Andrew E. Dessler, Minghuai Wang
Summary: The Earth's energy budget is influenced by spatial inhomogeneities in sea surface temperature and sea ice changes, as well as the pattern effect of global sea surface temperature. Ignoring these factors could lead to overestimation of future climate warming and increased uncertainty in climate projections. Including the pattern effect in projections indicates a stronger counteracting force against warming than expected, potentially exceeding current climate goals.
NATURE CLIMATE CHANGE
(2021)
Article
Multidisciplinary Sciences
Paulo Ceppi, Peer Nowack
Summary: Global warming influences Earth's cloud cover, which plays a crucial role in the uncertainty of Equilibrium Climate Sensitivity (ECS). Through analyzing how clouds respond to environmental changes, global cloud feedback is constrained to 0.43 +/- 0.35 W·m-2·K-1, indicating a robust amplifying effect of clouds on global warming. This approach is expected to provide tighter constraints on climate change projections and its various socioeconomic and ecological impacts.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Meteorology & Atmospheric Sciences
Qihua Peng, Shang -ping Xie, Rui Xin Huang, Weiqiang Wang, Tingting ZU, Dongxiao Wang
Summary: This study reveals that the slowdown of the Indonesian Throughflow (ITF) under anthropogenic warming is mainly caused by remote anomalous buoyancy forcing in the North Atlantic Ocean. Surface freshening and warming in the North Atlantic Ocean slow down the Atlantic meridional overturning circulation (AMOC), leading to a reduction in ITF transport.
JOURNAL OF CLIMATE
(2023)
Article
Environmental Sciences
Hua Su, Tian Qin, An Wang, Wenfang Lu
Summary: This study reconstructed a new dataset of ocean heat content (OHC) from 1993 to 2020 using multisource remote sensing and Argo gridded data with the LSTM neural network method, filling in pre-existing data gaps. The results indicated that LSTM outperformed other machine learning methods in improving the prediction accuracy of OHC, especially in long-term and deep-sea predictions.
Article
Geosciences, Multidisciplinary
Taimoor Sohail, Damien B. Irving, Jan D. Zika, Ryan M. Holmes, John A. Church
Summary: The study reveals that the ocean has absorbed a significant amount of heat, which can be traced back to warmer regions, with the cooling bias in the models traced back to inaccuracies in sea surface temperatures and heat fluxes.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Lijing Cheng, John Abraham, Kevin E. Trenberth, John Fasullo, Tim Boyer, Michael E. Mann, Jiang Zhu, Fan Wang, Ricardo Locarnini, Yuanlong Li, Bin Zhang, Zhetao Tan, Fujiang Yu, Liying Wan, Xingrong Chen, Xiangzhou Song, Yulong Liu, Franco Reseghetti, Simona Simoncelli, Viktor Gouretski, Gengxin Chen, Alexey Mishonov, Jim Reagan
Summary: The increased concentration of greenhouse gases in the atmosphere leads to a rise in ocean heat content and the warming of the world ocean. In 2021, the ocean reached its highest temperature on record, with an annual ocean heat content value surpassing the previous record by approximately 14 to 16 zetta joules. Long-term ocean warming is more prominent in the Atlantic and Southern Oceans and is primarily attributed to the increasing concentration of anthropogenic greenhouse gases. The year-to-year variation in ocean heat content is mainly influenced by the El Nino-Southern Oscillation. Significant warming is observed in the Indian, Tropical Atlantic, North Atlantic, Northwest Pacific, North Pacific, Southern Oceans, and Mediterranean Sea, with four out of seven regions showing record-high heat content in 2021. The anomalous global and regional ocean warming identified in this study should be considered in climate risk assessments, adaptation, and mitigation efforts.
ADVANCES IN ATMOSPHERIC SCIENCES
(2022)
Article
Environmental Sciences
Ruizi Shi, Qinya Zhang, Fanghua Xu, Xueyang Zhang, Yanluan Lin, Jishi Zhang
Summary: Tropical cyclones have had a significant decline in their ability to absorb ocean heat in recent decades, resulting in a reduction of approximately 15% in poleward heat transport, particularly in the Northwest Pacific. This decline is consistent with the strengthening of ocean stratification, shallower mixed layer depth, and smaller cold wake size. Additionally, the decline in ocean heat uptake may offset about 28% of upper ocean warming in the subtropical Northwest Pacific.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Multidisciplinary Sciences
Fabio Benedetti, Meike Vogt, Urs Hofmann Elizondo, Damiano Righetti, Niklaus E. Zimmermann, Nicolas Gruber
Summary: The study found that with ocean warming, the overall richness of marine phytoplankton and zooplankton species increases, and their distribution shifts poleward at an accelerated speed. Zooplankton richness slightly declines in tropical regions but increases in temperate to subpolar latitudes. Climate change may threaten the contribution of plankton communities to ecosystem services.
NATURE COMMUNICATIONS
(2021)
Article
Meteorology & Atmospheric Sciences
Bin Yao, Yangyang Xu, Andrew E. Dessler, Chao Liu
Summary: This paper compiles and compares climate modes indices in ensemble models, showing the best detrending method and lack of statistically significant lead-lag correlations between climate modes from North Pacific and North Atlantic sources.
Article
Meteorology & Atmospheric Sciences
Wenhui Chen, Huijuan Cui, Quansheng Ge
Summary: With global warming, the frequency and intensity of extreme precipitation in China are generally increasing. The study reveals a complex trend in the dependency of extreme precipitation events on temperature in China, with negative relationships found dominant in most areas in summer.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Agronomy
Shaozhi Lin, Huanjiong Wang, Quansheng Ge, Zhi Hu
Summary: The study found that 8 out of 14 temperate woody species exhibited significantly different relationships between chilling accumulation and heat requirement in two different winter seasons. Using the chilling model from the first year to simulate spring events in the second year resulted in large uncertainties, with root-mean-square errors ranging from 1.3 to 9.9 days. Additional chilling models were found to improve the phenological simulation by reducing RMSE by 0.1-3.7 days for 10 species.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Construction & Building Technology
Xiaoyu Li, Yue Zhang, Dongying Li, Yangyang Xu, Robert D. Brown
Summary: Global climate change has increased the risks of extreme weather-related disasters, leading to severe public health burdens. Research indicates that there is limited assessment and mitigation research on cold stress in underserved neighborhoods in warmer climate zones, resulting in the negligence of cold event preparedness and mitigation policies.
BUILDING AND ENVIRONMENT
(2022)
Article
Astronomy & Astrophysics
Yangyang Xu, Lei Lin, Chenrui Diao, Zhili Wang, Susan Bates, Julie Arblaster
Summary: The response of precipitation extremes (PEs) to global warming is found to be nonlinear. There are concerns regarding the accuracy of approximating the PE response to a single forcing using simulations that exclude one specific forcing. Previous studies suggesting a larger sensitivity of PE to aerosol forcing compared to greenhouse gases are questioned. This study reevaluates the PE sensitivity to greenhouse gases and aerosols using CESM1 ensemble simulations and confirms that PE sensitivity to aerosols is stronger than that due to greenhouse gases within similar warming regimes, but the difference is smaller than previously estimated. The study also suggests that the additivity assumption is largely valid for isolating the PE response due to aerosol forcing from the simulations when the warming regime is small.
EARTH AND SPACE SCIENCE
(2022)
Article
Environmental Sciences
Li-Li Sun, Hui-Juan Cui, Quan-Sheng Ge
Summary: This study predicts the emission trajectories at the provincial level in China and finds that most provinces can achieve peak emissions before 2030, but achieving carbon neutrality before 2060 is challenging. The provincial neutrality time is concentrated between 2058 and 2070.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2022)
Article
Agronomy
Chao Zhang, Jinwei Dong, Lijun Zuo, Quansheng Ge
Summary: This study proposed a two-step strategy to map annual irrigated areas in China from 2000 to 2019. The results showed that the total irrigated area in China increased by 24.8%, mainly in the northern region, due to land reclamation and improved irrigation infrastructure.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Agriculture, Multidisciplinary
Chao Zhang, Jinwei Dong, Quansheng Ge
Summary: With the development of remote sensing technology, fine-resolution cropland datasets have become powerful tools for agriculture planning and food security evaluation. This study compared and evaluated six crop-land products in China in 2015, finding differences in spatial consistency, provincial area accuracy, and pixel-wise accuracy.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2022)
Article
Engineering, Environmental
Mingwei Ma, Zhaohang Wang, Huijuan Cui, Wenchuan Wang, Liuyuwei Jiang
Summary: This study constructs a multi-scalar framework for attribution analysis by integrating hydrological modeling into the Budyko-based decomposition method and applies it to the source region of the Yellow River as a case study. The results indicate that climate change is the dominant factor controlling streamflow variation for the annual and wet season, while human activities play a major role in streamflow variation for the dry season. The applicability of the Budyko-based decomposition method within the new multi-scalar framework is verified through hydrologic simulation.
Article
Multidisciplinary Sciences
Meng Gao, Fan Wang, Yihui Ding, Zhiwei Wu, Yangyang Xu, Xiao Lu, Zifa Wang, Gregory R. Carmichael, Michael B. McElroy
Summary: It was found that the interannual variability of the co-occurrence of heat waves and O3 pollution in China during summer is mainly influenced by springtime warming in the western Pacific Ocean, western Indian Ocean, and Ross Sea. These sea surface temperature anomalies affect precipitation and radiation, which modulate the co-occurrence. A multivariable regression model was built to predict the co-occurrence a season in advance, with a correlation coefficient of 0.81 (P < 0.01) for the North China Plain. These findings provide useful information for the government to mitigate damage from these synergistic stressors.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Environmental Sciences
Hefei Huang, Huijuan Cui, Vijay P. Singh
Summary: This study analyzed daily precipitation data from 649 meteorological stations in China and identified 33-35 extreme precipitation zones. The study found that long-duration extreme precipitation exhibits a more pronounced regional consistency in distribution.
Article
Environmental Sciences
Mingwei Ma, Hongfei Zang, Wenchuan Wang, Huijuan Cui, Yanwei Sun, Yujia Cheng
Summary: In this study, a copula-based approach was used to propose the classical severity-duration-frequency (SDF) relationships of streamflow drought in the source area of the Yellow River. Multiple time-varying threshold levels and the integration and elimination of drought events were considered. The findings show that the copula-based SDF relationships can provide more critical information than univariate frequency analysis, as they effectively consider the connection and interaction between drought characteristics.
Article
Environmental Sciences
Xiaokang Wu, Yan Feng, Cenlin He, Rajesh Kumar, Cui Ge, David Painemal, Yangyang Xu
Summary: The study aims to improve the representation of aerosols in climate-chemistry models, specifically in the carbon bond mechanism, version Z (CBMZ), and modal aerosol modules with three lognormal modes (MAM3) in the WRF-CAM5 model. By incorporating biomass burning emissions, establishing a conversion mechanism between volatile organic compounds (VOCs) and secondary organic carbons (SOCs), and evaluating its performance against observational benchmarks, the study demonstrates the effectiveness of enhanced chemistry capabilities in the WRF-CAM5 model. The findings reveal a significant reduction in root-mean-square errors (RMSE) for surface concentrations of black carbon (BC) and organic carbon (OC).
Article
Environmental Sciences
Jie-Wei Chen, Hui-Juan Cui, Nan Chen, Guo-Qiang Qian
Summary: This study calculated the uncertainty of global temperature rise caused by uncertain NDCs and carbon-neutral policies, and discussed the difficulty of policy implementation. The results showed that delayed emission reduction policies by major emitters would result in a temperature rise of over 2 degrees C, while non-delayed policies could possibly achieve the 2 degrees C target. Furthermore, low-emission countries without restrictions may introduce uncertainty in global temperature rise.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2023)
Article
Water Resources
Mingwei Ma, Mingming Ren, Hongfei Zang, Huijuan Cui, Shanhu Jiang, Yanwei Sun
Summary: This study aims to explore the quantity-duration-frequency (QDF) relationships of lowflow in the source area of the Yellow River using the nonstationary approach of the generalized extreme value (GEV) models. The results show that incorporating climate indices as covariates in nonstationary GEV models, along with time, can better analyze the multivariate properties of lowflow and provide guidance for emergency management, water resource regulation, and future water engineering design.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
