High-resolution Simulation Dataset of Hourly PM2.5 Chemical Composition in China (CAQRA-aerosol) from 2013 to 2020

Advances in Atmospheric Sciences, Год журнала: 2025, Номер unknown

Опубликована: Янв. 22, 2025

Язык: Английский

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Potential causal associations of long-term exposure to PM2.5 constituents and all-cause mortality: Evidence from the Pearl River Cohort study

Ecotoxicology and Environmental Safety, Год журнала: 2025, Номер 291, С. 117897 - 117897

Опубликована: Фев. 1, 2025

Evidence of the potential causal effect PM2.5 and its constituents on all-cause mortality based large population cohort is still limited. Based a scale 341,098 participants in southern China, we developed marginal structure Cox model inverse probability weighting, an established inference approach, to evaluate associations between mortality, taking into account time-varying covariates. Additionally, further explored modifying effects demographic lifestyle characteristics these associations. For each IQR increase black carbon organic matter, risk increased by 51 % (95 CI: 40-62 %) 52 40-58 %), followed ammonium, nitrate sulfate (HR = 1.32, 1.38 1.39, respectively). Individuals < 65 years, unmarried, urban medical insured, not consuming alcohol, or exercising were potentially more susceptible adverse for most (P interaction 0.10). The HR estimates subgroups ranged from 1.51 2.10 carbon, 1.40-1.71 nitrate, 1.42-1.53 sulfate, 1.52-1.77 matter. Various sensitivity analyses verified robustness our findings. This study presented compelling evidence links mortality.

Язык: Английский

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Atmospheric sulfate aerosol formation enhanced by interfacial anions

PNAS Nexus, Год журнала: 2025, Номер 4(3)

Опубликована: Фев. 24, 2025

Heterogeneous oxidation of SO2 by NO2 on aerosols has recently been found to be one the major formation pathways sulfate in polluted troposphere, but chemical mechanisms and kinetics remain uncertain. By combining lab experiments, theoretical chemistry calculations, field measurements, here we show that is critically dependent anions at air-aerosol aqueous interface. The reaction rate with HSO3- (1.1 × 108-1.6 109 M-1 s-1) more than four orders magnitude larger traditionally held value for bulk phase due abundant occurrence chloride, nitrate, carboxylic air-aqueous interface, which remarkably accelerates during China haze periods enhancing uptake through interfacial electrostatic attraction. Atmospheric models not accounting this aerosol process likely produce misrepresentations tropospheric under conditions.

Язык: Английский

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Exposure to Fine Particulate Matter Constituents and Human Semen Quality Decline: A Multicenter Study

Environmental Science & Technology, Год журнала: 2023, Номер 57(35), С. 13025 - 13035

Опубликована: Авг. 22, 2023

Exposure to fine particulate matter (PM < 2.5 μm in diameter [PM2.5]) may accelerate human sperm quality decline, although research on this association is limited. Our objective was investigate the relationship between exposure chemical constituents of PM2.5 air pollution and decreased further explore exposure-response relationship. We conducted a multicenter population-based cohort study including 78,952 semen samples from 33,234 donors at 6 provincial banks (covering central, northern, southern, eastern, southwestern parts China) 2014 2020. Daily composition estimated using deep learning model integrating density ground-based measure network 1 km resolution. Linear mixed models with subject- center-specific intercepts were used quantify harmful impacts their relationships. Per interquartile range (IQR) increase levels during spermatogenesis significantly associated concentration, progressive motility, total motility. For constituents, per IQR increment Cl- (β: -0.02, 95% CI: [-0.03, -0.00]) NO3- -0.05, [-0.08, -0.02]) negatively count, while NH4+ -0.03, [-0.06, linked These results suggest that adversely affect quality, highlighting urgent need reduce exposure.

Язык: Английский

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Sources, Variations, and Effects on Air Quality of Atmospheric Ammonia

Current Pollution Reports, Год журнала: 2024, Номер 10(1), С. 40 - 53

Опубликована: Янв. 19, 2024

Язык: Английский

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Long-term PM1 exposure and hypertension hospitalization: A causal inference study on a large community-based cohort in South China

Science Bulletin, Год журнала: 2024, Номер 69(9), С. 1313 - 1322

Опубликована: Март 16, 2024

Язык: Английский

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Association between Long-Term Exposure to PM_2.5 Inorganic Chemical Compositions and Cardiopulmonary Mortality: A 22-Year Cohort Study in Northern China

Environment & Health, Год журнала: 2024, Номер 2(8), С. 530 - 540

Опубликована: Июнь 5, 2024

Particulate matter with diameters ≤2.5 μm (PM2.5) has been identified as a significant air pollutant contributing to premature mortality. Nevertheless, the specific compositions within PM2.5 that play most crucial role remain unclear, especially in areas high pollution concentrations. This study aims investigate individual and joint mortality risks associated inorganic chemical identify primary contributors. In 1998, we conducted prospective cohort four northern Chinese cities (Tianjin, Shenyang, Taiyuan, Rizhao). Satellite-based machine learning models calculated compositions, including sulfate (SO42–), nitrate (NO3–), ammonium (NH4+), chloride (Cl–). A time-varying Cox proportional hazards model was applied analyze associations between these cardiorespiratory mortality, encompassing nonaccidental causes, cardiovascular diseases (CVDs), nonmalignant respiratory (RDs), lung cancer. The quantile-based g-computation evaluated exposure effects relative contributions of compositions. Stratified analysis used vulnerable subpopulations. During 785,807 person-years follow-up, 5812 (15.5%) deaths occurred from 2932 (7.8%) all CVDs, 479 (1.3%) RDs, 552 (1.4%) Every interquartile range (IQR) increase SO42– causes (hazard ratio: 1.860; 95% confidence interval: 1.809, 1.911), CVDs (1.909; 1.836, 1.985), RDs (2.178; 1.975, 2.403), cancer (1.773; 1.624, 1.937). model, simultaneous rise one IQR increased risk by at least 36.3%, long-term cardiopulmonary deaths. Individuals higher incomes lower education levels were found be more vulnerable. Long-term significantly potentially being contributor. These findings offer insights into how sources impact health, aiding development effective governance measures.

Язык: Английский

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Ambient PM_2.5 Chemical Composition and Cardiovascular Disease Hospitalizations in China

Environmental Science & Technology, Год журнала: 2024, Номер 58(37), С. 16327 - 16335

Опубликована: Авг. 13, 2024

Little is known about the impacts of specific chemical components on cardiovascular hospitalizations. We examined relationships PM2.5 composition and daily hospitalizations for disease in 184 Chinese cities. Acute exposures were linked to higher same day percentage change admission was highest at 1.76% (95% CI, 1.36–2.16%) per interquartile range increase BC, followed by 1.07% (0.72–1.43%) SO42–, 1.04% (0.63–1.46%) NH4+, 0.99% (0.55–1.43%) NO3–, 0.83% (0.50–1.17%) OM, 0.80% (0.34%–1.26%) Cl–. Similar findings observed all cause-specific major diseases, except heart rhythm disturbances. Short-term related admissions showed diverse diseases.

Язык: Английский

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Reconstruction of all-sky daily air temperature datasets with high accuracy in China from 2003 to 2022

Scientific Data, Год журнала: 2024, Номер 11(1)

Опубликована: Окт. 15, 2024

A high-accuracy, continuous air temperature (Ta) dataset with high spatiotemporal resolution is essential for human health, disease prediction, and energy management. Existing datasets consider factors such as elevation, latitude, surface but insufficiently address meteorological factors, affecting accuracy. Additionally, no high-resolution currently includes daily maximum (T

Язык: Английский

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First retrieval of 24-hourly 1-km-resolution gapless surface ozone (O3) from space in China using artificial intelligence: Diurnal variations and implications for air quality and phytotoxicity

Remote Sensing of Environment, Год журнала: 2024, Номер 316, С. 114482 - 114482

Опубликована: Ноя. 1, 2024

Язык: Английский

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