搜索结果: 1-15 共查到“理学 Carbonaceous”相关记录25条 . 查询时间(0.08 秒)
Occurrences, abundances, and compositional variations of cosmic symplectites in the Acfer 094 ungrouped carbonaceous chondrite
cosmic symplectite magnetite Fe,Ni-sulfides Acfer 094 carbonaceous chondrite
2017/4/10
We describe the petrographic occurrences, abundances, and compositional variations of symplectically intergrown
Fe,Ni-sulfides and 17,18O-rich magnetite (D17O ~ 90‰), named cosmic symplectites (COS; ...
Tellurium isotope compositions in acid leach fractions of carbonaceous chondrites
tellurium isotopes acid leaching N-TIMS carbonaceous chondrites isotope anomaly
2017/4/10
We present the tellurium (Te) isotope compositions of the acid leachates and residues from three carbonaceous chondrites,
namely, Allende, Murchison, and Tagish Lake. Most of the Te isotope compositi...
Carbonaceous and Ionic Components of Atmospheric Fine Particles in Beijing and Their Impact on Atmospheric Visibility
PM2.5 OC EC Ion Visibility
2016/3/25
Ground-based observation of fine particulate matter (PM2.5) in Beijing was carried out continuously in 2006. The
carbonaceous and ionic components, as well as their distribution characteristics and s...
Carbonaceous aerosols contributed by traffic and solid fuel burning at a polluted rural site in Northwestern England
Carbonaceous aerosols traffic and solid fuel a polluted rural site Northwestern England
2011/2/25
The experiment presented in this paper was conducted at the Holme Moss site, which is located in the southern Pennines region in Northwestern England during November–December 2006. The strong southwes...
Optical-chemical-microphysical relationships and closure studies for mixed carbonaceous aerosols observed at Jeju Island; 3-laser photoacoustic spectrometer, particle sizing, and filter analysis
Optical-chemical-microphysical relationships mixed carbonaceous aerosols 3-laser photoacoustic spectrometer particle sizing filter analysis
2010/11/29
Transport of aerosols in pollution plumes from the mainland Asian continent was observed in situ at Jeju, South Korea during the Cheju Asian Brown Cloud Plume-Asian Monsoon Experiment (CAPMEX) field c...
Seasonal variation and spatial distribution of carbonaceous aerosols in Taiwan
Seasonal variation spatial distribution carbonaceous aerosols Taiwan
2010/10/21
To investigate the physico-chemical properties of aerosols in Taiwan, an observation network was initiated in 2003. In this work, the measurements of the mass concentration and carbonaceous compositio...
Improved measurement of carbonaceous aerosol: evaluation of the sampling artifacts and inter-comparison of the thermal-optical analysis methods
carbonaceous aerosol the sampling artifacts the thermal-optical analysis methods
2010/9/21
The sampling artifacts (both positive and negative) and the influence of thermal-optical methods (both charring correction method and the peak inert mode temperature) on the split of organic carbon (O...
Climate effects of seasonally varying Biomass Burning emitted Carbonaceous Aerosols (BBCA)
Climate Biomass Burning emitted Carbonaceous Aerosols
2010/9/21
The climate impact of the seasonality of Biomass Burning emitted Carbonaceous Aerosols (BBCA) is studied using an aerosol-climate model coupled with a slab ocean model in a set of 60-year long simulat...
Airborne measurements from two consecutive days, analysed with the aid of an aerosol-adiabatic cloud parcel model, are used to study the effect of carbonaceous aerosol particles on the reflectivity of...
A global modeling study on carbonaceous aerosol microphysical characteristics and radiative effects
carbonaceous aerosol microphysical characteristics radiative effects
2010/8/16
Our best estimate for net direct and indirect aerosol radiative flux change between 1750 and 2000 is −0.56 W/m2. However, the direct and indirect aerosol effects are quite sensitive to the black...
Characteristics and Sources of Carbonaceous, Ionic, and Isotopic Species of Wintertime Atmospheric Aerosols in Kathmandu Valley, Nepal
Carbonaceous aerosols Kathmandu Ionic aerosols Isotope ratios
2016/3/29
To investigate the air pollution from aerosols in Kathmandu during winter, bulk aerosol samples were collected during
winter 2007–2008 to characterize carbonaceous and ionic species and carbon and ni...
Microscopic characterization of carbonaceous aerosol particle aging in the outflow from Mexico City
carbonaceous aerosol particle outflow Mexico City
2010/2/21
This study was part of the Megacities Initiative: Local and Global Research Observations (MILAGRO) field campaign conducted in Mexico City metropolitan area during spring 2006. The physical and chemic...
Positive sampling artifact of carbonaceous aerosols and its influence on the thermal-optical split of OC/EC
carbonaceous aerosols thermal-optical split OC/EC
2009/10/9
Accurate measurement of carbonaceous aerosols is challenging, due to the sampling artifact and the problems of the split of OC/EC. Two approaches have been used to account for the positive artifact: b...
Springtime warming and reduced snow cover from carbonaceous particles
Springtime warming snow carbonaceous particles
2009/5/7
Boreal spring climate is uniquely susceptible to solar warming mechanisms because it has expansive snow cover and receives relatively strong insolation. Carbonaceous particles can influence snow cover...
Carbonaceous aerosols in Norwegian urban areas
Carbonaceous aerosols Norwegian urban areas
2009/3/31
Little is known regarding levels and source strength of carbonaceous aerosols in Scandinavia. In the present study, ambient aerosol (PM10 and PM2.5) concentrations of elemental carbon (EC), organic ca...