Article
Multidisciplinary Sciences
Alvin Christopher Galang Varquez, Shota Kiyomoto, Do Ngoc Khanh, Manabu Kanda
Summary: This study constructs a 1-km global anthropogenic heat emission dataset, incorporating future urban environmental factors into AHE maps based on various pathways and models, providing a more accurate representation of spatial distribution compared to other datasets.
Article
Environmental Sciences
Fiona M. O'Connor, N. Luke Abraham, Mohit Dalvi, Gerd A. Folberth, Paul T. Griffiths, Catherine Hardacre, Ben T. Johnson, Ron Kahana, James Keeble, Byeonghyeon Kim, Olaf Morgenstern, Jane P. Mulcahy, Mark Richardson, Eddy Robertson, Jeongbyn Seo, Sungbo Shim, Joao C. Teixeira, Steven T. Turnock, Jonny Williams, Andrew J. Wiltshire, Stephanie Woodward, Guang Zeng
Summary: This study quantifies and analyzes the changes in anthropogenic effective radiative forcings using the UKESM1 model, showing that greenhouse gases and ozone precursor gases are the main climate forcers, while negative forcings also come from aerosols, ozone precursors, and land use changes. Including interactions between different components of the Earth system is crucial for accurately quantifying these forcings.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Environmental Sciences
Vaios Moschos, Julia Schmale, Wenche Aas, Silvia Becagli, Giulia Calzolai, Konstantinos Eleftheriadis, Claire E. Moffett, Juergen Schnelle-Kreis, Mirko Severi, Sangeeta Sharma, Henrik Skov, Mika Vestenius, Wendy Zhang, Hannele Hakola, Heidi Hellen, Lin Huang, Jean-Luc Jaffrezo, Andreas Massling, Jakob K. Nojgaard, Tuukka Petaja, Olga Popovicheva, Rebecca J. Sheesley, Rita Traversi, Karl Espen Yttri, Andre S. H. Prevot, Urs Baltensperger, Imad El Haddad
Summary: The Arctic is warming at an accelerated rate compared to the global average, and the role of aerosols in this process is not well understood. This study presents a comprehensive dataset on the chemical composition and seasonal variability of particulate matter in the Arctic, providing important insights into the sources and characteristics of aerosols in the region. The findings have significant implications for policymaking and climate modeling.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Multidisciplinary Sciences
Yujuan Wang, Peipei Wu, Yanxu Zhang
Summary: The impacts of climate change on mercury cycling in the ocean include increased elemental mercury evasion, decreased air-sea exchange rates, reduced availability of bioavailable mercury for methylation, and increased photodemethylation potential, which can affect the concentration of methylmercury in the marine food web.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Environmental Sciences
Marianne Cowherd, L. Ruby Leung, Manuela Girotto
Summary: Seasonal snow is crucial for global water supply, but snow droughts are becoming more frequent and severe. This study used climate models to analyze the frequency, severity, and type of snow droughts globally. The results highlight the emerging threat of snow droughts to water resources and the need for better models to understand complex mountain topography, wildland fires, and snow-forest interactions.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Hai Wang, Yu-Jun Wen
Summary: The study compared the large-scale climate responses to anthropogenic aerosols and greenhouse gas forcing from 1930 to 2010, revealing different patterns of impact based on the spatial and temporal changes. While greenhouse gas forcing dominated climate change in the twentieth century, anthropogenic aerosols played a significant role in shaping regional climate changes, particularly in the latter half of the century. The shifting patterns of aerosol emissions from different regions led to distinct climate responses, with effects opposite to those induced by greenhouse gases.
Article
Environmental Sciences
Fabiola Murguia-Flores, Anita L. Ganesan, Sandra Arndt, Edward R. C. Hornibrook
Summary: Soil methanotrophy is a vital process in removing methane from the atmosphere, with global uptake expected to increase significantly in the coming decades. Temperature is becoming a more important factor influencing soil methanotrophy rates, while nitrogen inputs and soil moisture also play significant roles regionally. These findings highlight the complexities of the soil sink response to various environmental drivers beyond just atmospheric methane levels.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Article
Multidisciplinary Sciences
Casey J. Wall, Joel R. Norris, Anna Possner, Daniel T. Mccoy, Isabel L. Mccoy, Nicholas J. Lutsko
Summary: This study quantifies the relationship between anthropogenic sulfate aerosols and low-level clouds using satellite observations, and estimates the range of equilibrium climate sensitivity (ECS) by constraining the associated radiative forcing. The results indicate that the uncertainty in aerosol forcing is smaller and ECS may be larger than previously assessed.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Meteorology & Atmospheric Sciences
Dongdong Yang, Hua Zhang, Zhili Wang, Shuyun Zhao, Jiangnan Li
Summary: The study reveals that changes in fine particulate matter (PM2.5) and coarse particulate matter (CPM) have different and sometimes opposite effects on climate. Increases in PM2.5 lead to significant cooling effects on climate, while changes in CPM produce smaller and even opposite effects.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Environmental Sciences
Kevin R. Gurney, Siir Kilkis, Karen C. Seto, Shuaib Lwasa, Daniel Moran, Keywan Riahi, Meredith Keller, Peter Rayner, Muhammed Luqman
Summary: Projections of greenhouse gas emissions are crucial for understanding and anticipating future climate change. The influence of urban areas on global emissions is significant and increasing, especially with the rapid urbanization. Urban mitigation measures are vital for achieving climate neutrality.
GLOBAL ENVIRONMENTAL CHANGE-HUMAN AND POLICY DIMENSIONS
(2022)
Article
Engineering, Environmental
Wanying Chen, Xingcheng Lu, Dehao Yuan, Yiang Chen, Zhenning Li, Yeqi Huang, Tung Fung, Haochen Sun, Jimmy C. H. Fung
Summary: This study generated global-scale PM2.5 concentration data and calculated the associated exposure and premature mortality burden. The results showed that the SSP3-7.0 scenario had the highest PM2.5 concentration of 34.5 μg/m(3) in 2100, while the SSP1-2.6 scenario had the lowest concentration of 15.7 μg/m(3). The prediction indicated an increase in premature mortality for elderly individuals, leading to a contrary trend of improved air quality and increased total PM2.5-related deaths in the four SSPs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Letter
Geosciences, Multidisciplinary
Annette L. Hirsch, Nina N. Ridder, Sarah E. Perkins-Kirkpatrick, Anna Ukkola
Summary: Heatwave frequency, duration and intensity have increased since the 1950s, with climate models showing potential bias in reproducing historical statistics of these events. Comparisons between CMIP5 and CMIP6 models indicate marginal improvements in simulating heatwave metrics, suggesting significant advances in climate modeling capabilities are needed for future improvements in projecting heatwaves.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Jian Cao, Haikun Zhao, Bin Wang, Liguang Wu
Summary: The authors demonstrate that anthropogenic aerosol emissions can decrease northern hemisphere tropical cyclones while increasing those in the southern hemisphere by influencing vertical wind shear and upward motion in the tropical cyclone formation areas.
NATURE COMMUNICATIONS
(2021)
Article
Geosciences, Multidisciplinary
Jia-Rui Shi, Young-Oh Kwon, Susan E. Wijffels
Summary: Separating the climate response to external forcing from internal climate variability is a challenge. This study focuses on North Pacific subsurface temperature responses driven by anthropogenic aerosol emissions. The findings show a nonmonotonic temporal response and a characteristic zonal-mean pattern associated with the aerosol forcing.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Allison C. Michaelis, Gary M. Lackmann
Summary: This study explores how tropical cyclones transform into extratropical cyclones in baroclinic midlatitude environments, leading to significant impacts in the future climate scenario such as intensified precipitation and stronger near-surface winds. The research shows that post-transition events exhibit a northward latitudinal shift and a strengthening of the extratropical cyclone, with post-transformation storm intensity increasing significantly.
JOURNAL OF CLIMATE
(2021)
Article
Geochemistry & Geophysics
Yi-Chang Chen, Chien-Ming Wu, Wei-Ting Chen
Summary: This study introduces a framework to extract high-dimensional nonlinear relationships among state variables for aggregated convection using convolutional neural network models. By iterating the training process and eliminating features with provided physics explanations, explainable nonlinear relationships among variables can be provided. The study identified essential cloud characteristics and found a strong relationship between aggregation, cloud peripherals, and fractal dimensions. This framework provides a possibility to explore the high-dimensional relationship between the physics process with the assistance of CNN models.
ATMOSPHERIC SCIENCE LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Tzu Han Hsu Su, Wei Ting Chen, Chien Mingw Wu, Min-Ken Hsieh
Summary: This study quantifies the potential effect of lee vortex on the deterioration of fine particulate matter (PM2.5) pollution in Taiwan's complex topography, using observational data. The results show that under favorable weather conditions, the western region of Taiwan experiences a high occurrence of PM2.5 enhancement. The enhancement areas expand northward during consecutive lee vortex days, and their evolution is influenced by background winds, as demonstrated by numerical simulations.
JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
(2023)
Article
Environmental Sciences
Lei Chen, Hong Liao, Jia Zhu, Ke Li, Yang Bai, Xu Yue, Yang Yang, Jianlin Hu, Meigen Zhang
Summary: This study systematically examines the historical and future changes in premature respiratory mortalities caused by ozone (O3) exposure in China and identifies the primary factors contributing to these changes. The historical assessment for 2013-2019 is based on gridded O3 concentrations, while the future prediction for 2019-2030 uses projected O3 concentrations under different scenarios. The study finds that the deterioration of O3 air quality is the main factor driving the increase in O3-mortality during 2013-2019, but population aging will become the leading cause of future O3-mortality rises from 2019 to 2030.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Yan Li, Baojie Li, Hong Liao, Bing-Bing Zhou, Jing Wei, Yuxia Wang, Yuzhu Zang, Yang Yang, Rui Liu, Xiaorui Wang
Summary: China's non-poverty-stricken areas have more severe PM2.5 pollution than poverty-stricken areas, leading to higher premature mortality. China's total PM2.5-related premature mortality is relatively evenly distributed across regions of different GDP per capita levels, but slightly increased from 2015 to 2020 due to the change in age structure. PM2.5-related premature deaths are more severe for populations of low socioeconomic status, and this environmental health inequality may be amplified by population aging. Migration from China's poverty-stricken areas to developed cities has contributed to a significant number of premature deaths.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Fengyi Chang, Jiandong Li, Nan Li, Hong Liao
Summary: We used the WRF-Chem model to simulate a stratospheric intrusion (SI) event in eastern China and investigate its impact on near-surface O3 pollution. The large-scale circulation of SI was characterized by a deep trough over central China, South Asia high, and Western Pacific Subtropical high. The results showed that SI contributed up to 6.5 ppb to the surface O3 concentration, mainly through horizontal advection. The study highlights the natural effect of SI on O3 pollution in eastern China and its implications for the development of an O3 pollution alert system.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Environmental Sciences
Chau-Ren Jung, Wei -Ting Chen, Li-Hao Young, Ta-Chih Hsiao
Summary: Modeling is a cost-effective measure to estimate ultrafine particle (UFP) levels. In this study, in-situ measurements and various data sources were used to develop a model for estimating the daily UFP levels at a high resolution. Three machine learning algorithms were used and the model showed good performance in validation tests.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Geosciences, Multidisciplinary
Yu-Hung Chang, Wei-Ting Chen, Chien-Ming Wu, Yi-Hung Kuo, J. David Neelin
Summary: Orographically-locked diurnal convection involves interactions between local circulation and the thermodynamic environment of convection. Strong convective updraft columns within heavily precipitating, organized systems exhibit a mass flux profile gradually increasing with height through a deep lower-tropospheric inflow layer. Enhanced convective development is associated with higher upstream moist static energy (MSE) transport through this deep-inflow layer via local circulation, augmenting the rain rate by 36% in precipitation hotspots. These simulations provide practical guidance for targeted observations within the most common deep-inflow path. Preliminary field measurements support the presence of high MSE transport within the deep-inflow layer when organized convection occurs at the hotspot. Orographically-locked convection facilitates both modeling and field campaign design to examine the general properties of active deep convection.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Astronomy & Astrophysics
Kuan-Ting Kuo, Chien-Ming Wu, Wei-Ting Chen
Summary: In this study, the Superparameterized Community Atmosphere Model (SPCAM) is used to simulate tropical cyclones using the hindcast approach. The results show that a smaller horizontal scale in the sub-grid cloud-resolving models can lead to overestimation of the number and intensity of tropical cyclones. The study highlights the importance of sub-grid configuration when estimating TC activities using SPCAM.
EARTH AND SPACE SCIENCE
(2023)
Article
Meteorology & Atmospheric Sciences
Jui-Lin F. Li, Wei-Liang Lee, Kuan-Man Xu, Yu-Cian Tsai, Jonathan Jiang, Jia-Yuh Yu, Graeme Stephens, Eric Fetzer, Wei-Ting Chen
Summary: This study uses CloudSat-CALIPSO satellite data to evaluate the modeled cloud fraction in CMIP5 models during a recent historical period. The comparison reveals that most CMIP5 models do not account for precipitating and convective core hydrometeors, leading to significant underestimation of cloud fraction compared to satellite-retrieved data. The underestimation is particularly pronounced in certain regions and altitudes where precipitating ice and convective core hydrometeors play a major role.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Jiyuan Gao, Yang Yang, Hailong Wang, Pinya Wang, Baojie Li, Jiandong Li, Jiangfeng Wei, Meng Gao, Hong Liao
Summary: This study investigates the fast and slow climate responses in China to changes in domestic and foreign anthropogenic aerosol emissions. The results show that both domestic and foreign aerosol changes contribute to the warming in China, with domestic emissions affecting primarily through rapid atmospheric adjustments and foreign aerosol changes influencing through slow oceanic processes. The comparable influence of domestic and foreign aerosol changes highlights the importance of international collaboration in climate mitigation efforts.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2023)
Article
Environmental Sciences
Nadia K. Colombi, Daniel J. Jacob, Laura Hyesung Yang, Shixian Zhai, Viral Shah, Stuart K. Grange, Robert M. Yantosca, Soontae Kim, Hong Liao
Summary: Despite efforts to decrease emissions, surface ozone pollution in South Korea has increased over the past 2 decades and consistently exceeds the air quality standard. A study of the trends in surface ozone and NO2 concentrations from 2015 to 2019 reveals an increase in ozone concentration in April-May and a decrease in NO2 concentration by 22%. Global atmospheric chemistry models can successfully simulate surface ozone and explain the emission-driven ozone trend in the Seoul metropolitan area.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Meteorology & Atmospheric Sciences
Chao Liu, Yang Yang, Hailong Wang, Lili Ren, Jiangfeng Wei, Pinya Wang, Hong Liao
Summary: Since the implementation of the Air Pollution Prevention and Control Action Plan in 2013, aerosol emissions in East Asia have decreased significantly, while emissions in South Asia have continued to increase, resulting in a dipole pattern of aerosol emissions between the two regions. A study investigating the East Asian summer monsoon (EASM) responses to these changes found that the reduction in East Asian emissions alone led to a positive aerosol effective radiative forcing (ERF) and a slight warming in summer. When considering both the emission reductions in East Asia and the increases in South Asia, the ERF and warming over central-eastern China were further enhanced, while the rainfall decreased slightly. Overall, the study highlights the important role of South Asian aerosols in changing the East Asian climate.
JOURNAL OF CLIMATE
(2023)
Article
Environmental Sciences
Mengyun Li, Yang Yang, Hailong Wang, Huimin Li, Pinya Wang, Hong Liao
Summary: In recent years, the level of near-surface ozone (O3) in China has been increasing rapidly, leading to significant damage to human health and ecosystems. This study investigates the impact of the stratospheric quasi-biennial oscillation (QBO) on the interannual variations of summertime tropospheric O3 over China. The results show that QBO has a significant positive correlation with near-surface O3 concentrations over central China under warm sea surface temperature (SST) anomalies.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Huimin Li, Yang Yang, Jianbing Jin, Hailong Wang, Ke Li, Pinya Wang, Hong Liao
Summary: This study quantifies the impacts of future climate change on ozone (O3) pollution in Asia and predicts near-surface O3 concentrations from 2020 to 2100. The results show that under high-forcing scenarios, O3 concentrations will increase by 5%-20% in South China, Southeast Asia, and South India, and by less than 10% in North China and the Gangetic Plains. Furthermore, the study finds that summertime O3 pollution in eastern China will expand from North China to South China and extend into the cold season in a warmer future.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Huibin Dai, Hong Liao, Ke Li, Xu Yue, Yang Yang, Jia Zhu, Jianbing Jin, Baojie Li, Xingwen Jiang
Summary: Frequent co-polluted days by ozone and PM2.5 were observed in the Beijing-Tianjin-Hebei region from 2013 to 2020. The chemical and physical characteristics of these days were different from those of single ozone or PM2.5 pollution, and they have significant implications for air quality management.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
