搜索结果: 31-45 共查到“理学 O3”相关记录88条 . 查询时间(0.064 秒)
反演波段对DOAS测量大气中O3的性能影响研究
大气光学 环境监测 差分吸收光谱
2009/10/29
臭氧(O3)浓度通常被认为是一个地方污染水平的基准，所以其绝对值的准确性至关重要。在差分光学吸收光谱技术(DOAS)对O3的测量过程中，光谱反演波段的选择可直接决定O3浓度的测量准确度。文章主要研究了在不同光谱波段O3特征吸收结构和差分光学厚度(D′)的不同，在不同光谱波段O3浓度反演的干扰来源以及影响程度，确定了实际检测时大气消光对不同波段光强的影响，最后通过对多种污染物标准气体进行了同时监测，...
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
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 ...
通过等体积浸渍法并分别经过H2和O3活化制备了系列1.1%Au/LaFeOx/Al2O3催化剂,考察了其在550 ℃经1.0% CO原料气处理后的CO氧化活性. Fe和La的引入虽然使1.1%Au/Al2O3的初始活性降低,但提高了其高温稳定性. 在550 ℃经1.0% CO原料气预处理2 h后, H2活化的1.1%Au/Al2O3在室温完全失活,而同样条件处理的1.1%Au/2%LaFeO3/A...
采用溶液注入法和丝网印刷法制备了(La,Sr)(Co,Fe)O3-δ(LSCF)/YSZ与LSCF/GDC复合电极,并通过扫描电镜和电化学阻抗谱研究了不同结构电极的微观形貌和电化学催化性能. 结果表明, LSCF阴极与YSZ电解质在低于800 ℃下制备时,没有新相产生; 在中温固体氧化物燃料电池的工作条件(700～750 ℃)下,溶液注入法制备的LSCF阴极与YSZ电解质有较好的化学相容性和较高的...
AC Conductivity and Impedance Properties of 0.65Pb(Mg1/3Nb2/3)O3-0.35PbTiO3 Ceramics
Impedance Properties morphotropic phase boundary 0.65Pb
2009/9/4
The electrical properties of 0.65Pb(Mg1/3Nb2/3)O3-0.35(PbTiO3) ceramics over a wide range of frequencies (102–106 Hz) and temperatures (30–225∘C) were studied using impedance spectroscopy ...
MIPAS reduced spectral resolution UTLS-1 mode measurements of temperature,O3,HNO3,N2O,H2O and relative humidity over ice:retrievals and comparison to MLS
MIPAS reduced spectral resolution UTLS-1 mode measurements temperature O3 HNO3 N2O H2O MLS
2010/2/8
During several periods since 2005 the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on Envisat has performed observations dedicated to the region of the upper troposphere/lower str...
Synoptic influences on springtime tropospheric O3 and CO over the North American export region observed by TES
Synoptic influences North American export region TES
2009/6/16
The relationship between synoptic circulation patterns over the western North Atlantic Ocean in spring (March, April, and May) and tropospheric O3 and CO was investigated using retrievals from the Tro...
The zonal structure of tropical O3 and CO as observed by the Tropospheric Emission Spectrometer in November 2004 – Part 2: Impact of surface emissions on O3 and its precursors
Tropospheric Emission Spectrometer surface emissions O3
2009/6/16
The impact of surface emissions on the zonal structure of tropical tropospheric ozone and carbon monoxide is investigated for November 2004 using satellite observations, in-situ measurements, and chem...
The zonal structure of tropical O3 and CO as observed by the Tropospheric Emission Spectrometer in November 2004 – Part 1: Inverse modeling of CO emissions
Tropospheric Emission Spectrometer Inverse modeling CO emissions
2009/6/16
We conduct an inverse modeling analysis of measurements of atmospheric CO from the TES and MOPITT satellite instruments using the GEOS-Chem global chemical transport model to quantify emissions of CO ...
Retrieval of temperature,H2O,O3,HNO3,CH4,N2O,ClONO2 and ClO from MIPAS reduced resolution nominal mode limb emission measurements
Retrieval temperature H2O O3 HNO3 CH4 N2O ClONO2 ClO MIPAS reduced resolution
2010/2/8
Retrievals of temperature, H2O, O3, HNO3, CH4, N2O, ClONO2 and ClO from MIPAS reduced spectral resolution nominal mode limb emission measurements outperform retrievals from respective full spectral re...
The impact of weather and atmospheric circulation on O3 and PM10 levels at a rural mid-latitude site
weather and atmospheric circulation O3 PM10 levels rural mid-latitude site
2009/5/6
In spite of the strict EU regulations, concentrations of surface ozone and PM10 often exceed the pollution standards for the Netherlands and Europe. Their concentrations are controlled by (precursor) ...
The SCOUT-O3 Darwin Aircraft Campaign: rationale and meteorology
SCOUT-O3 Darwin Aircraft Campaign rationale meteorology
2009/3/12
An aircraft measurement campaign involving the Russian high-altitude aircraft M55 Geophysica and the German DLR Falcon was conducted in Darwin, Australia in November and December 2005 as part of the E...
On the origin of tropospheric O3 over the Indian Ocean during the winter monsoon: African biomass burning vs. stratosphere-troposphere exchange
tropospheric O3 Indian Ocean winter monsoon African biomass stratosphere-troposphere exchange
2009/3/12
This study investigates the origin of a commonly observed feature in the O3 profiles: mid tropospheric O3 maxima (300--500 hPa) over the tropical Indian Ocean. A comparison and analysis of model simul...
New particle formation during a- and b-pinene oxidation by O3, OH and NO3, and the influence of water vapour: particle size distribution studies
a- and b-pinene oxidation O3 OH NO3 water vapour particle size distribution
2009/3/12
New particle formation during the oxidation of a- and b-pinene (C10H16) by ozone, OH and NO3 was studied by measuring the particle size distributions with a scanning mobility particle sizer (TSI 3936)...