A5061223653- Atmospheric chemistry and aerosols
- Advanced Computational Techniques and Applications
- Air Quality and Health Impacts
- Service-Oriented Architecture and Web Services
- Geographic Information Systems Studies
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- Multi-Agent Systems and Negotiation
- Atmospheric aerosols and clouds
- Data Management and Algorithms
- Opportunistic and Delay-Tolerant Networks
- Semantic Web and Ontologies
- Chemokine receptors and signaling
- Mobile Agent-Based Network Management
- Multimodal Machine Learning Applications
- Topic Modeling
- Vehicle emissions and performance
- Mobile and Web Applications
- Web Data Mining and Analysis
- Cell Adhesion Molecules Research
- Natural Language Processing Techniques
- Banking Systems and Strategies
- Climate Change and Health Impacts
- Viral Infectious Diseases and Gene Expression in Insects
Peking University
2011-2024
Harvard University Press
2024
Harvard University
2024
Union Hospital
2024
Huazhong University of Science and Technology
2024
University of Science and Technology of China
2024
Peng Cheng Laboratory
2022
National Institute of Information and Communications Technology
2018
Guangxi Medical University
2014
Longyan University
2006
China's nationwide ozone monitoring network initiated in 2013 has observed severe surface pollution. This network, combined with the recent Tropospheric Ozone Assessment Report (TOAR) data set, offers a more comprehensive view on global distribution and trends. Here, we report quantitative estimates of warm-season (April–September) trends resulting health impacts at Chinese cities 2013–2019. Both parametric nonparametric linear for 12 metrics relevant to human vegetation exposure are...
The evaporative emissions of anthropogenic volatile organic compounds (AVOCs) are sensitive to ambient temperature. This sensitivity forms an air pollution-meteorology connection that has not been assessed on a regional scale. We parametrized the temperature dependence AVOC fluxes in quality model and evaluated impacts surface ozone Beijing–Tianjin–Hebei (BTH) area China during summer 2017. dependency drove enhanced simulated ozone-temperature 1.0 1.8 μg m–3 K–1, comparable driven by...
Effective mitigation of surface ozone pollution entails detailed knowledge the contributing precursors' sources. We use GEOS-Chem adjoint model to analyze precursors in Beijing–Tianjin–Hebei area (BTH) China on days different severities June 2019. find that BTH heavily polluted is sensitive local emissions, as well emitted from provinces south (Shandong, Henan, and Jiangsu, collectively SHJ area). Heavy can be mitigated effectively by reducing NOx (from industrial processes transportation),...
Abstract. We present the WRF-GC model v2.0, an online two-way coupling of Weather Research and Forecasting (WRF) meteorological (v3.9.1.1) GEOS-Chem (v12.7.2). v2.0 is built on modular framework v1.0 further includes aerosol–radiation interaction (ARI) aerosol–cloud (ACI) based bulk aerosol mass composition, as well capability to nest multiple domains for high-resolution simulations. first implementation in open-source dynamic with chemical feedbacks meteorology. In WRF-GC, calculations are...
Machine learning methods are increasingly used in air quality studies to predict pollution levels, while few applied them diagnose and improve the underlying mechanisms controlling represented chemical transport models (CTMs). Here, we use random forest (RF) method high biases of surface daily maximum 8 h average (MDA8) ozone concentrations GEOS-Chem CTM evaluated against measurements from nationwide monitoring network summer 2018 over China. The feature importance results show that cloud...
Surface ozone air pollution is unequally distributed in space and varies over urban surrounding nonurban areas. Traditionally, levels tend to be lower than their counterparts, resulting from discrepancies emissions nonlinearity photochemistry. However, how the differences vs evolve past decades uncertain. Here, we construct 6361 pairs of measurement sites based on available surface monitoring networks analyze long-term changes differences. We show that have narrowed substantially North...
// Wanqiong Yuan 1 , Ting Li Xiaoning Mo Xiaolin Wang Baocai Liu Wenyan Yu Su Lan Xu Wenling Han Peking University Center for Human Disease Genomics, Department of Immunology, Key Laboratory Medical Ministry Health, School Basic Sciences, Health Science Center, Beijing 100191, China Correspondence to: Han, e-mail: hanwl@bjmu.edu.cn Keywords: CMTM3, gastric cancer, EMT, metastasis, STAT3 Received: September 26, 2015 Accepted: March 28, 2016 Published: April 18, ABSTRACT CMTM3 (CKLF-like...
Abstract We combined observations and simulations to assess tropospheric ozone trends over Southeast Asia from 2005 2016. Multi‐platform showed that surface had been increasing at rates of 0.7–1.2 ppb year −1 the Peninsular (PSEA) 0.2–0.4 Maritime Continents (MC); columns rising throughout by 0.21–0.35 DU . These observed were better reproduced driven with satellite‐constrained NO x emissions, indicating emission growths may have underestimated for PSEA overestimated MC in Community...
China's industrial restructuring and pollution controls have altered the contributions of individual sources to varying air quality over past decade. We used GEOS-Chem adjoint model investigated changing sensitivities PM2.5 ozone (O3) multiple species from 2010 2020 in central Yangtze River Delta (YRDC), largest economic region China. Controlling primary particles SO2 residential sectors dominated decline, reducing CO ≥C3 alkenes vehicles restrained O3. The chemical regime O3 formation...
Abstract The impacts of weather forecast uncertainties have not been quantified in current air quality forecasting systems. To address this, we developed an efficient 2‐D convolutional neural network‐surface ozone ensemble (2DCNN‐SOEF) system using network and forecasts, applied the to 216‐hr forecasts Shenzhen, China. 2DCNN‐SOEF demonstrated comparable performance operating systems met level accuracies required by Chinese authorities up 144‐hr lead time. Uncertainties contributed 38%–54%...
Abstract We use satellite observations of atmospheric methane from the TROPOMI instrument to estimate total annual emissions for 2019–2023 four large Southeast US landfills with gas collection and control systems. The are on average 6× higher than values reported by Greenhouse Gas Reporting Program (GHGRP) which used Environmental Protection Agency its national Inventory (GHGI). find increasing over period whereas GHGRP reports a decrease. requires gas-collecting their either recovery-first...
Oceanic nitrogen deposition influences marine ecosystem eutrophication and the global carbon cycle. Its future spatiotemporal features still remain unclear driven by changing anthropogenic emissions. Furthermore, existing studies reported air quality climate benefits of ambitious emission reductions, while consequent impacts for ecosystems through atmospheric are unexplored. Here we utilize chemistry transport model GEOS-Chem to evaluate changes in oceanic between 2015 2050 under three CMIP6...
Methane is a potent greenhouse gas, and detailed understanding of its contributions from different countries source sectors necessary for climate action. Livestock the dominant anthropogenic methane source, but bottom-up estimates emissions have high uncertainties. Inversions satellite observations atmospheric can offer valuable top-down information, related uncertainties need to be carefully characterized. Colombia has large proportion livestock, past work over region identified...
Cytokine-like 1 (CYTL1) is a novel potential cytokine that was first identified in CD34(+) cells derived from bone marrow and cord blood, it also found using our immunogenomics strategy. The immunobiological functions of CYTL1 remain largely unknown, its receptor(s) has not been identified. A previous proposed hypothesis suggested had structural similarities with CCL2 CCR2 receptor CYTL1. In this study, we verify possesses chemotactic activity demonstrate functional CCR2B series experiments...
Sushi domain containing 2 (SUSD2) is type I membrane protein domains inherent to adhesion molecules. There have been few reported studies on SUSD2, and they mainly focused breast cancer, colon HeLa cells. However, the expression function of SUSD2 in other cancers remain unclear. In present study, we conducted an integrated bioinformatics analysis based array data from GEO database found a significant downregulation renal cell carcinoma (RCC) lung cancer. Western blotting quantitative RT-PCR...
In early 2020, two unique events perturbed ship emissions of pollutants around Southern China, proffering insights into the impacts on regional air quality: decline activities due to COVID-19 and global enforcement low-sulfur (<0.5%) fuel oil for ships. January February estimated NOx, SO2, primary PM2.5 over China dropped by 19, 71, 58%, respectively, relative same period in 2019. The NOx was mostly coastal waters inland waterways reduced activities. SO2 most pronounced outside Chinese...
Although reactive nitrogen (Nr) emissions from food and energy production contribute to multi-dimensional environmental damages, integrated management of Nr is still lacking owing unclear future mitigation potentials benefits. Here, we find that by 2050, high-ambition compared low-ambition N interventions reduce global ammonia oxide 21 22 TgN/a, respectively, equivalent 40 52% their 2015 levels. This would mitigate population-weighted PM2.5 6 g/m
Abstract Sustained near‐surface ozone pollution despite stringent emission controls in China has drawn wide attention. However, how such rapid regional reductions affect global tropospheric remains unexplored. Here, using an ensemble of measurements and model simulations, we find Chinese during 2013–2020 have increased domestic surface ozone; particularly North China, they decreased the burden by 2.7 Tg (54% China's anthropogenic contribution 7% 2019) radiative forcing 8.8 mW m −2 (64% 9%...
Abstract Aims Circular RNAs (circRNAs) are considered important regulators of biological processes, but their impact on atherosclerosis development, a key factor in coronary artery disease (CAD), has not been fully elucidated. We aimed to investigate potential use patients with CAD and the pathogenesis atherosclerosis. Methods results Patients stable angina (SA) or acute syndrome (ACS) controls were selected for transcriptomic screening quantification circRNAs blood cells. stained carotid...
Abstract While China’s clean air actions implemented since 2013 have been effective in mitigating PM 2.5 pollution, the large emission reductions during COVID-19 lockdown period early 2020 did not similarly alleviate pollution North China, reflecting a distinct nonlinear chemical response of formation to changes. Here we apply emission-concentration relationships for diagnosed using adjoint approach quantitatively assess how nonlinearity affects over Beijing February two reduction scenarios:...