搜索结果: 1-15 共查到“大气科学 H2O”相关记录16条 . 查询时间(0.062 秒)
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
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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 ...
Particle formation in the Arctic free troposphere during the ASTAR 2004 campaign: a case study on the influence of vertical motion on the binary homogeneous nucleation of H2SO4/H2O
Arctic free troposphere ASTAR 2004 campaign binary homogeneous nucleation of H2SO4/H2O
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2010/2/21
During the ASTAR (Arctic Study of Tropospheric Aerosol and Radiation) campaign nucleation mode particles (4 to 13 nm) were quite frequently observed at altitudes below 4000 m. However, in the upper fr...
Kinetic double-layer model of aerosol surface chemistry and gas-particle interactions (K2-SURF): Degradation of polycyclic aromatic hydrocarbons exposed to O3, NO2, H2O, OH and NO3
Kinetic double-layer model aerosol surface chemistry gas-particle interactions K2-SURF
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2009/12/31
We present a kinetic double-layer surface model (K2-SURF) that describes the degradation of polycyclic aromatic hydrocarbons (PAHs) on aerosol particles exposed to ozone, nitrogen dioxide, water vapor...
Detailed heterogeneous chemistry in an urban plume box model: reversible co-adsorption of O3, NO2, and H2O on soot coated with benzo[a]pyrene
Detailed heterogeneous chemistry urban plume box model NO2 H2O
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2009/10/9
This study assesses in detail the effects of heterogeneous chemistry on the particle surface and gas-phase composition by modeling the reversible co-adsorption of O3, NO2, and H2O on soot coated with ...
FTIR spectroscopic studies of the simultaneous condensation of HCl and H2O at 190 K – Atmospheric applications
FTIR spectroscopic study simultaneous condensation HCl H2O Atmospheric applications
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2009/3/11
Type II polar stratospheric cloud particles are made up of ice that forms by water vapor condensation in the presence of numerous trace gases, including HCl. These gaseous species can co-condense with...
A novel model to predict the physical state of atmospheric H2SO4/NH3/H2O aerosol particles
novel model atmospheric H2SO4/NH3/H2O aerosol particles
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2009/3/11
The physical state of the tropospheric aerosol is largely unknown despite its importance for cloud formation and for the aerosol's radiative properties. Here we use detailed microphysical laboratory m...
A fast H2O total column density product from GOME – Validation with in-situ aircraft measurements
H2O total column density GOME – Validation in-situ aircraft measurements
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2009/3/10
Atmospheric water vapour is the most important greenhouse gas which is responsible for about 2/3 of the natural greenhouse effect, therefore changes in atmospheric water vapour in a changing climate (...
慕士塔格夏季近地表大气CO2及H2O含量变化
CO2和H2O含量 冰川作用区 慕士塔格
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2009/3/2
对帕米尔高原慕士塔格地区海拔4500 m第四纪冰川作用区夏季近地表大气CO2及H2O的含量进行了连续两年的观测, 结果表明自6月底至8月中旬大气CO2含量整体呈轻微的下降趋势, 下降幅度约5 μmol·mol-1, 并且具有明显的日变化周期. 该区近地表大气CO2日最高含量出现在当地时间2:30~5:30 am, 最低浓度发生于12:30~15:30 pm. 对比2002年与2003年的观测结果,...
Technical note: A stratospheric climatology for O3, H2O, CH4, NOx, HCl and HF derived from HALOE measurements
stratospheric climatology O3 HF HALOE measurements
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2009/2/18
The Halogen Occultation Experiment (HALOE) on board the Upper Atmosphere Research Satellite (UARS) has observed mixing ratios of important trace species in the stratosphere for more than a decade sinc...
Evidence for long-lived polar vortex air in the mid-latitude summer stratosphere from in situ laser diode CH4 and H2O measurements
long-lived polar vortex air mid-latitude summer stratosphere situ laser diode
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2009/2/11
A balloon borne diode laser spectrometer was launched in southern France in June 2000 to yield in situ stratospheric CH4 and H2O measurements. In the altitude region ranging from 20km to 25km, strikin...
Ground-based remote sensing of HDO/H2O ratio profiles: introduction and validation of an innovative retrieval approach
Ground-based remote sensing HDO/H2O ratio profiles innovative retrieval approach
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2009/1/16
We propose an innovative approach for analysing ground-based FTIR spectra which allows us to detect variabilities of lower and middle/upper tropospheric HDO/H2O ratios. We show that the proposed meth...
Impact of H2SO4/H2O coating and ice crystal size on radiative properties of sub-visible cirrus
H2SO4/H2O coating ice crystal size radiative properties sub-visible cirrus
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2009/1/16
Recent laboratory experiments showed that at conditions resembling those near the tropopause region, small ice particles can be coated by a liquid H2SO4/H2O over-layer formed after the freezing of dil...
Seasonal cycles and variability of O3 and H2O in the UT/LMS during SPURT
Seasonal cycles UT/LMS SPURT
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2008/12/30
Airborne high resolution in situ measurements of a large set of trace gases including ozone (O3) and total water (H2O) in the upper troposphere and the lowermost stratosphere (UT/LMS) have been perfor...
The effect of H2O adsorption on cloud drop activation of insoluble particles: a theoretical framework
H2O adsorption cloud drop activation insoluble particles theoretical framework
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2008/12/29
Cloud droplet activation of wettable insoluble compounds has been studied theoretically by assuming that droplet growth happens through multilayer adsorption. The idea is to include an adsorption isot...
ISORROPIA II: a computationally efficient thermodynamic equilibrium model for K+–Ca2+–Mg2+–NH4+–Na+–SO42W22;–NO3W22;–ClW22;–H2O aerosols
thermodynamic equilibrium model aerosol
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2008/12/18
This study presents ISORROPIA II, a thermodynamic equilibrium model for the K+–Ca2+–Mg2+–NH4+–Na+–SO42W22;–NO3W22;–ClW22;–H2O aerosol system. A comprehensive evaluation of its performance is ...