Changes in the Direct Climate Effect of Black Carbon Aerosols in East Asia Under the “Dual Carbon” Goal of China DOI
Peng Gao, Yiman Gao,

Yinan Zhou

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2024, Volume and Issue: 129(14)

Published: July 23, 2024

Abstract In the context of China's “dual carbon” goal, emissions air pollutants are expected to significantly decrease in future. Thus, direct climate effects black carbon (BC) aerosols East Asia investigated under this goal using an updated regional and chemistry model. The simulated annual average BC concentration over is approximately 1.29 μg/m 3 last decade. Compared those 2010–2020, both column burden instantaneous radiative forcing by more than 55% 80%, respectively, peak year (2030s) neutrality (2060s). Conversely, effective (ERF) responses exhibit substantial nonlinearity emission reduction, possibly resulting from different adjustments thermal‐dynamic fields clouds BC‐radiation interactions. mean ERF at tropopause +1.11 W/m 2 2010–2020 while negative 2060s. interactions present‐day impose a significant cooling −0.2 −0.5 K central China but warming +0.3 Tibetan Plateau. As decline, surface temperature show mixed picture compared with eastern Tibet −0.3 2030s, Indian might play important role Asian reduction China.

Language: Английский

Amplified transboundary transport of haze by aerosol–boundary layer interaction in China DOI
Xin Huang, Aijun Ding, Zilin Wang

et al.

Nature Geoscience, Journal Year: 2020, Volume and Issue: 13(6), P. 428 - 434

Published: May 25, 2020

Language: Английский

Citations

316
Assessing the formation and evolution mechanisms of severe haze pollution in the Beijing–Tianjin–Hebei region using process analysis DOI Creative Commons
Lei Chen, Jia Zhu, Hong Liao

et al.

Atmospheric chemistry and physics, Journal Year: 2019, Volume and Issue: 19(16), P. 10845 - 10864

Published: Aug. 28, 2019

Abstract. Fine-particle pollution associated with haze threatens human health, especially in the North China Plain region, where extremely high PM2.5 concentrations are frequently observed during winter. In this study, Weather Research and Forecasting Chemistry (WRF-Chem) model coupled an improved integrated process analysis scheme was used to investigate formation evolution mechanisms of a event over Beijing–Tianjin–Hebei (BTH) region December 2015; included examination contributions local emissions regional transport concentration BTH area, each detailed physical or chemical variations concentration. The influencing aerosol radiative forcing (including direct indirect effects) were also examined by using analysis. During accumulation stage (16–22 December, Stage 1), near-surface increased from 24.2 289.8 µg m−3, increasing 12 % 40 %, while contribution decreased 59 38 %. dispersion (23–27 2), average 107.9 which contributed (51 %) (24 %). 24 h change (23:00 minus 00:00 LST) +43.9 m−3 1 −41.5 2. chemistry, advection, vertical mixing +29.6 (+17.9) −71.8 (−103.6) −177.3 (−221.6) (Stage respectively. Small differences other processes found between Therefore, increase mainly attributed strong production chemistry weak removal advection processes. When feedback considered, enhanced 4.8 1, could be (+22.5 m−3), (−19.6 (+1.2 m−3). restrained primary reason for enhancement when considered.

Language: Английский

Citations

105
Fast Climate Responses to Aerosol Emission Reductions During the COVID‐19 Pandemic DOI Creative Commons
Yang Yang, Lili Ren, Huimin Li

et al.

Geophysical Research Letters, Journal Year: 2020, Volume and Issue: 47(19)

Published: Sept. 17, 2020

Abstract The reduced human activities and associated decreases in aerosol emissions during the COVID‐19 pandemic are expected to affect climate. Assuming emission changes lockdown, back‐to‐work post‐lockdown stages of COVID‐19, climate model simulations show a surface warming over continental regions Northern Hemisphere. In January–March, there was an anomalous 0.05–0.15 K eastern China, temperature increase 0.04–0.07 Europe, United States, South Asia March–May. longer reductions undergo, warmer would become. explain observed increases 10–40% China relative 2019. A southward shift ITCZ is also seen simulations. This study provides insight into impact on global regional implications for immediate actions mitigate fast warming.

Language: Английский

Citations

91
Source attribution of Arctic black carbon and sulfate aerosols and associated Arctic surface warming during 1980–2018 DOI Creative Commons
Lili Ren, Yang Yang, Hailong Wang

et al.

Atmospheric chemistry and physics, Journal Year: 2020, Volume and Issue: 20(14), P. 9067 - 9085

Published: July 30, 2020

Abstract. Observations show that the concentrations of Arctic sulfate and black carbon (BC) aerosols have declined since early 1980s. Previous studies reported reducing potentially contributed to recent rapid warming. In this study, a global aerosol–climate model (Community Atmosphere Model, version 5) equipped with Explicit Aerosol Source Tagging (CAM5-EAST) is applied quantify source apportionment in from 16 regions role aerosol variations affecting changes surface temperature 1980 2018. The CAM5-EAST simulated BC had decrease 43 % 23 %, respectively, 2014–2018 relative 1980–1984 mainly due reduction emissions Europe, Russia local sources. Increases South East Asia led positive trends upper troposphere. All radiative impacts are considered including aerosol–radiation aerosol–cloud interactions, as well deposition on snow- ice-covered surfaces. Within Arctic, reductions caused top-of-atmosphere (TOA) warming 0.11 0.25 W m−2 through respectively. While atmospheric has little impact forcing, snow ice net cooling 0.05 m−2. By applying climate sensitivity factors for different latitudinal bands, during (with respect 1980–1984) exerted +0.088 0.057 K warming, interactions. Through an +0.193 between two time periods. weakened effect snow–ice albedo −0.041 K. outside produced total +0.25 K, majority which midlatitude forcing. Our results suggest over midlatitudes Northern Hemisphere larger than other enhanced poleward heat transport. combined effects +0.297 explaining approximately 20 observed

Language: Английский

Citations

77
Spatial distribution and sources of winter black carbon and brown carbon in six Chinese megacities DOI
Qian Zhang, Zhenxing Shen, Tian Zhang

et al.

The Science of The Total Environment, Journal Year: 2020, Volume and Issue: 762, P. 143075 - 143075

Published: Oct. 17, 2020

Language: Английский

Citations

65
Directional spatial spillover effects and driving factors of haze pollution in North China Plain DOI
Hao Zhou,

Mingdong Jiang,

Yumeng Huang

et al.

Resources Conservation and Recycling, Journal Year: 2021, Volume and Issue: 169, P. 105475 - 105475

Published: Feb. 9, 2021

Language: Английский

Citations

46
Characteristics of MERRA-2 black carbon variation in east China during 2000–2016 DOI
Xiaofeng Xu,

Xiaoyue Yang,

Bin Zhu

et al.

Atmospheric Environment, Journal Year: 2019, Volume and Issue: 222, P. 117140 - 117140

Published: Nov. 13, 2019

Language: Английский

Citations

50
Source apportionment of black carbon aerosols from light absorption observation and source-oriented modeling: an implication in a coastal city in China DOI Creative Commons
Junjun Deng, Hao Guo, Hongliang Zhang

et al.

Atmospheric chemistry and physics, Journal Year: 2020, Volume and Issue: 20(22), P. 14419 - 14435

Published: Nov. 27, 2020

Abstract. Black carbon (BC) is the most important light-absorbing aerosol in atmosphere. However, sources of atmospheric BC aerosols are largely uncertain, making it difficult to assess its influence on radiative forcing and climate change. In this study, year-round light-absorption observations were conducted during 2014 using an aethalometer Xiamen, a coastal city Southeast China. Source apportionment was performed temporal variations characterized based both light absorption measurements source-oriented air quality model. The annual average concentrations from fossil fuel (BCff) biomass burning (BCbb) by method 2932 ± 1444 ng m−3 1340 542 m−3, contributing 66.7 % 33.3 total BC, respectively. A sensitivity analysis with different Ångström exponent (AAE) values combustion (αff) (αbb), suggesting that more sensitive changes αbb than αff. BCbb contribution exhibited clear diurnal cycle, highest level (37.9 %) evening rush hour seasonal pattern maximum (39.9 winter. Conditional probability function (CPF) revealed large biomass-burning contributions accompanied east-northeasterly northerly winds. Backward trajectory indicated masses North East–Central China associated larger contributions. Potential source (PSCF) concentration-weighted (CWT) suggested Asia potential BCff BCbb. modeling results showed transportation, residential open accounting for 45.3 %, 30.1 17.6 major sources. Among three catalogs, liquid (46.5 largest source, followed (32.6 coal (20.9 %). identified model 67.4 32.6 respectively, close those obtained method. findings provide solid support controlling limit impacts change environmental degradation relatively clean region

Language: Английский

Citations

47
Enhanced PM2.5 Decreases and O3 Increases in China During COVID‐19 Lockdown by Aerosol‐Radiation Feedback DOI Creative Commons
Jia Zhu, Lei Chen, Hong Liao

et al.

Geophysical Research Letters, Journal Year: 2020, Volume and Issue: 48(2)

Published: Dec. 7, 2020

Abstract We apply an online‐coupled meteorology‐chemistry model (WRF‐Chem) embedded with improved process analysis to examine aerosol‐radiation feedback (ARF) impacts on effectiveness of emission control due Coronavirus Disease 2019 (COVID‐19) lockdown over North China Plain. Emission reduction alone induces PM 2.5 decrease by 16.3 μg m −3 and O 3 increase 10.2 ppbv during COVID‐19 lockdown. The ARF enhances 2.7 (16.6%) 0.8 (7.8%). ARF‐induced enhancement decline is mostly attributed aerosol chemistry process, while rise ascribed physical advection vertical mixing processes. A set sensitivity experiments reductions in different degrees indicate that the enhancements declines (O rises) follow a robust linear relationship emission‐reduction‐induced decreases. fitted has important implication for assessing abatement at any extent.

Language: Английский

Citations

45
The effect of particulate matter on solar photovoltaic power generation over the Republic of Korea DOI Creative Commons
Junghoon Son, Sujong Jeong, Hayoung Park

et al.

Environmental Research Letters, Journal Year: 2020, Volume and Issue: 15(8), P. 084004 - 084004

Published: May 5, 2020

Abstract Degradation in air quality could be a potential factor for decreasing solar photovoltaic (PV) power generation. However, our understandings of the airborne particulate matter (PM) to reduce actual PV generation remain unclear. This study quantifies attenuation impacts PM on cloudless days at Yeongam and Eunpyeong-gu plants installed Republic Korea. The reduction rate according substantial amount is calculated by constructing multiple regression models based record, observed meteorological parameters, measured PM2.5 PM10 concentrations 2015–2017. At both plants, commonly more than 10% maximum capacity under conditions ‘normal’ quality, 35 μ g m −3 80 PM10, respectively. Moreover, exceeds 20% ‘bad’ 75 150 Results show that negative should considered process policymaking target Korea, as well countries with high emissions.

Language: Английский

Citations

44