搜索结果: 1-12 共查到“大气化学 nuclei”相关记录12条 . 查询时间(0.156 秒)
Measured and modelled cloud condensation nuclei number concentration at the high alpine site Jungfraujoch
cloud condensation nuclei number concentration the high alpine site Jungfraujoch
2010/9/1
Atmospheric aerosol particles are able to act as cloud condensation nuclei (CCN) and are therefore important for the climate and the hydrological cycle, but their properties are not fully understood. ...
Amine exchange into ammonium bisulfate and ammonium nitrate nuclei
Amine ammonium bisulfate ammonium nitrate nuclei
2010/8/12
The exchange kinetics and thermodynamics of amines for ammonia in small (1–2 nm diameter) ammonium bisulfate and ammonium nitrate clusters were investigated using electrospray ionization Fourier trans...
Cloud condensation nuclei in polluted air and biomass burning smoke near the mega-city Guangzhou, China – Part 1: Size-resolved measurements and implications for the modeling of aerosol particle hygroscopicity and CCN activity
Cloud condensation nuclei polluted air and biomass Size-resolved measurements and implications aerosol particle hygroscopicity CCN activity
2010/8/12
Atmospheric aerosol particles serving as Cloud Condensation Nuclei (CCN) are key elements of the hydrological cycle and climate. We measured and characterized CCN in polluted air and biomass burning s...
Cloud condensation nuclei in pristine tropical rainforest air of Amazonia: size-resolved measurements and modeling of atmospheric aerosol composition and CCN activity
Cloud condensation nuclei pristine tropical rainforest air Amazonia atmospheric aerosol composition CCN activity
2009/10/13
Atmospheric aerosol particles serving as cloud condensation nuclei (CCN) are key elements of the hydrological cycle and climate. We have measured and characterized CCN at water vapor supersaturations ...
Aerosol- and updraft-limited regimes of cloud droplet formation: influence of particle number, size and hygroscopicity on the activation of cloud condensation nuclei (CCN)
Aerosol- and updraft-limited regimes cloud droplet formation cloud condensation nuclei CCN
2009/9/27
We have investigated the formation of cloud droplets under pyro-convective conditions using a cloud parcel model with detailed spectral microphysics and with the κ-Köhler model approach for effic...
Measurements of particle masses of inorganic salt particles for calibration of cloud condensation nuclei counters
particle masses inorganic salt particles cloud condensation nuclei counters
2009/8/25
We measured the mobility equivalent critical dry diameter for cloud condensation nuclei (CCN) activation (dc_me) and the particle mass of size-selected (NH4)2SO4 and NaCl particles to calibrate a CCN ...
Organic acids as cloud condensation nuclei：Laboratory studies of highly soluble and insoluble species
Organic acids cloud condensation nuclei soluble and insoluble species
2009/3/10
The ability of sub-micron-sized organic acid particles to act as cloud condensation nuclei (CCN) has been examined at room temperature using a newly constructed continuous-flow, thermal-gradient diffu...
Chemical characteristics of ice residual nuclei in anvil cirrus clouds: evidence for homogeneous and heterogeneous ice formation
ice residual nuclei anvil cirrus clouds homogeneous and heterogeneous ice formation
2009/2/16
A counterflow virtual impactor was used to collect residual particles larger than about 0.1 μm diameter from anvil cirrus clouds generated over Florida in the southern United States. A wide variety of...
Closure between measured and modeled cloud condensation nuclei (CCN) using size-resolved aerosol compositions in downtown Toronto
CCN size-resolved aerosol compositions Toronto
2009/1/12
Measurements of cloud condensation nuclei (CCN) were made in downtown Toronto during August and September, 2003. CCN measurements were performed at 0.58% supersaturation using a thermal-gradient diffu...
Cloud Condensation Nuclei properties of model and atmospheric HULIS
Cloud Condensation Nuclei properties model atmospheric HULIS
2009/1/12
Humic like substances (HULIS) have been identified as a major fraction of the organic component of atmospheric aerosols. These large multifunctional compounds of both primary and secondary sources ar...
Efficiency of cloud condensation nuclei formation from ultrafine particles
cloud condensation nuclei ultrafine particles
2008/12/3
Atmospheric cloud condensation nuclei (CCN) concentrations are a key uncertainty in the assessment of the effect of anthropogenic aerosol on clouds and climate. The ability of new ultrafine particles ...
Calibration and measurement uncertainties of a continuous-flow cloud condensation nuclei counter (DMT-CCNC): CCN activation of ammonium sulfate and sodium chloride aerosol particles in theory and experiment
calibration continuous-flow cloud condensation nuclei counter CCN sodium chloride aerosol
2008/10/31
Experimental and theoretical uncertainties in the measurement of cloud condensation nuclei (CCN) with a continuous-flow thermal-gradient CCN counter from Droplet Measurement Technologies (DMT-CCNC) ha...