搜索结果: 1-15 共查到“大气科学 SO2”相关记录31条 . 查询时间(0.906 秒)
中国科学院生态环境研究中心贺泓院士团队发现大气Cl-光活化及其催化氧化SO2的新机制（图）
贺泓 大气 光活化 催化氧化
2024/2/25
硫酸盐是大气细颗粒物（PM2.5）的主要成分，对全球气候变化、区域空气质量以及人类健康都有重要影响。目前全球和区域大气模式不能准确模拟硫酸盐的观测结果，说明大气中存在硫酸盐的未知生成机制。贺泓院士团队与宾夕法尼亚大学Joseph S. Francisco教授团队、北京理工大学张秀辉教授团队合作研究发现，在潮解NaCl颗粒上，SO2可以发生非均相光氧化反应生成硫酸盐。通过实验和量子化学理论计算证实，...
由于我国的能源结构以煤炭为主，煤炭燃烧产生的SO2污染是我国面临的重大环境问题之一。除了SO2本身对人体健康有严重的影响，其通过气粒转化形成的二次气溶胶粒子会加剧灰霾的发生和发展。在“十一五”之后，SO2污染物总量减排成为我国的一项重要任务。许多研究工作都表明，我国SO2的排放量呈现显著的下降趋势。但是，仍有一些科学问题尚未弄清：(1) SO2是单调持续下降，还是存在一些复杂波动过程？(2) 不同...
Laboratory study on new particle formation from the reaction OH + SO2: influence of experimental conditions, H2O vapour, NH3 and the amine tert-butylamine on the overall process
Laboratory study new particle formation the reaction OH + SO2 H2O vapour NH3 the amine tert-butylamine the overall process
2010/8/16
Nucleation experiments starting from the reaction of OH radicals with SO2 have been performed in the IfT-LFT flow tube under atmospheric conditions at 293±0.5 K for a relative humidity of 13–61%. The ...
Geoengineering by stratospheric SO2 injection: results from the Met Office HadGEM2 climate model and comparison with the Goddard Institute for Space Studies ModelE
stratospheric SO2 injection the Met Office HadGEM2 climate model the Goddard Institute Space Studies ModelE
2010/8/16
We examine the response of the Met Office Hadley Centre's HadGEM2-AO climate model to simulated geoengineering by continuous injection of SO2 into the lower stratosphere, and compare the results with ...
Observations of the 2008 Kasatochi volcanic SO2 plume by CARIBIC aircraft DOAS and the GOME-2 satellite
the 2008 Kasatochi volcanic SO2 plume CARIBIC aircraft DOAS the GOME-2 satellite
2010/8/13
The 2008 Kasatochi volcanic eruption emitted ≈1.5–2.5 Tg SO2 into the upper troposphere and lower stratosphere. Parts of the main volcanic plume (gases and particles) reached central Europe a week aft...
One conceivable mechanism of UV-light induced SO2 Oxidation to H2SO4
One conceivable mechanism of UV-light SO2 Oxidation to H2SO4
2010/8/12
The electron-excited chemistry of sulfur dioxide oxidation induced by UV irradiation of air with trace O3 and SO2 is considered. The importance of this mechanism is evaluated based on recent laborator...
Formaldehyde and its relation to CO，PAN，and SO2 in the Houston-Galveston airshed
Formaldehyde CO PAN SO2 Houston-Galveston airshed
2010/3/16
The Houston-Galveston Airshed (HGA) is one of the major metropolitan areas in the US that is classified as a nonattainment area of federal ozone standards. Formaldehyde (HCHO) is a key species in unde...
Changes in the production rate of secondary aerosol particles in Central Europe in view of decreasing SO2 emissions between 1996 and 2006
secondary aerosol particles Central Europe SO2 emissions
2010/2/21
In anthropogenically influenced atmospheres, sulphur dioxide (SO2) is the main precursor of gaseous sulphuric acid (H2SO4), which in turn is a main precursor for atmospheric particle nucleation. As a ...
Hit from both sides: tracking industrial and volcanic plumes in Mexico City with surface measurements and OMI SO2 retrievals during the MILAGRO field campaign
tracking industrial and volcanic plumes Mexico City surface measurements OMI SO2
2009/12/31
Large sulfur dioxide plumes were measured in the Mexico City Metropolitan Area (MCMA) during the MILAGRO field campaign. This paper seeks to identify the sources of these plumes and the meteorological...
Kinetic modeling of nucleation experiments involving SO2 and OH: new insights into the underlying nucleation mechanisms
Kinetic modeling nucleation experiments SO2 OH underlying nucleation mechanisms
2009/11/9
Nucleation is an important source of atmospheric aerosols which have significant climatic and health implications. Despite intensive theoretical and field studies over the past decades, the dominant n...
Tula industrial complex (Mexico) emissions of SO2 and NO2 during the MCMA 2006 field campaign using a mobile mini-DOAS system
Tula industrial complex emissions Mexico mobile mini-DOAS system
2009/9/11
The Mexico City Metropolitan Area (MCMA) has presented severe pollution problems for many years. There are several point and mobile emission sources inside and outside the MCMA which are known to affe...
East Asian SO2 pollution plume over Europe – Part 2: Evolution and potential impact
East Asian SO2 pollution Europe Evolution potential impact
2009/7/23
We report on the first observation-based case study of an aged East Asian anthropogenic SO2 pollution plume over Europe. Our airborne measurements in that plume detected highly elevated SO2 mole fract...
East Asian SO2 pollution plume over Europe – Part 1: Airborne trace gas measurements and source identification by particle dispersion model simulations
East Asian SO2 pollution Europe Airborne trace gas measurements source identification
2009/7/23
A large SO2-rich pollution plume of East Asian origin was detected by aircraft based CIMS (Chemical Ionization Mass Spectrometry) measurements at 3–7.5 km altitude over the North Atlantic. The measure...
Exploring atmospheric boundary layer characteristics in a severe SO2 episode in the north-eastern Adriatic
atmospheric boundary layer severe SO2 episode north-eastern Adriatic
2009/7/15
Stable atmospheric conditions are often connected with the occurrence of high pollution episodes especially in urban or industrial areas. In this work we investigate a severe SO2 episode observed on 3...
Oxidation of SO2 by H2O2 on ice surfaces at 228 K: a sink for SO2 in ice clouds
SO H2O2 ice surfaces SO2 ice clouds
2009/3/12
The heterogeneous reaction SO2 + H2O2 H2SO4 on ice at 228 K has been studied in a low temperature coated-wall flow tube. With H2O2 in excess of SO2, the loss of SO2 on an ice surface is time depende...