搜索结果: 106-120 共查到“大气化学 Aerosol”相关记录311条 . 查询时间(0.124 秒)
Observational study of influence of aerosol hygroscopic growth on scattering coefficient over rural area near Beijing mega-city
aerosol hygroscopic growth scattering coefficient Beijing mega-city
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2009/10/13
We investigated aerosol hygroscopic growth property and its influence on scattering coefficient using M9003 nephelometers in coupling with humidity controlled inlet system at a rural site near Beijing...
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
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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...
Elevated nitrogen-containing particles observed in Asian dust aerosol samples collected at the marine boundary layer of the Bohai Sea and the Yellow Sea
Elevated nitrogen-containing particles Asian dust aerosol samples Bohai Sea Yellow Sea
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2009/9/23
Low-Z particle electron probe X-ray microanalysis (low-Z particle EPMA) shows powerful advantages for the characterization of ambient particulate matter in environmental and geological applications. B...
Aerosol optical properties relevant to regional remote sensing of CCN activity and links to their organic mass fraction: airborne observations over Central Mexico and the US West Coast during MILAGRO/INTEX-B
Aerosol optical properties regional remote sensing CCN activity organic mass fraction
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2009/9/23
Remote sensing of cloud condensation nuclei (CCN) would help evaluate the indirect effects of tropospheric aerosols on clouds and climate. To assess its feasibility, we examined relationships of submi...
Study of columnar aerosol size distribution in Hong Kong
columnar aerosol size distribution Hong Kong
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2009/9/2
This paper presents studies on columnar aerosol optical properties in Hong Kong with focus on aerosol volume size distribution, which helps understand local aerosol properties, variation, hygroscopic ...
Evaluation of recently-proposed secondary organic aerosol models for a case study in Mexico City
recently-proposed secondary organic aerosol models case study Mexico City
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2009/8/18
Recent field studies have found large discrepancies in the measured vs. modeled SOA mass loadings in both urban and regional polluted atmospheres. The reasons for these large differences are unclear. ...
Characterization of organic ambient aerosol during MIRAGE 2006 on three platforms
organic ambient aerosol MIRAGE 2006 three platforms
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2009/8/7
Submicron atmospheric aerosol particles were collected during the Megacity Initiative: Local and Global Research Observation (MILAGRO) in March 2006 at three platforms located in the Mexico City urban...
The formation, properties and impact of secondary organic aerosol: current and emerging issues
secondary organic aerosol current issues emerging issues
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2009/8/7
Secondary organic aerosol (SOA) accounts for a significant fraction of ambient tropospheric aerosol and a detailed knowledge of the formation, properties and transformation of SOA is therefore require...
In-cloud processes of methacrolein under simulated conditions – Part 2: Formation of secondary organic aerosol
In-cloud processes simulated conditions secondary organic aerosol
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2009/8/7
The fate of methacrolein in cloud evapo-condensation cycles was experimentally investigated. To this end, aqueous-phase reactions of methacrolein with OH radicals were performed (as described in Liu e...
A new physically-based quantification of marine isoprene and primary organic aerosol emissions
physically-based quantification marine isoprene primary organic aerosol emissions
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2009/8/7
phytoplankton isoprene production and dynamic euphotic depth to simulate hourly marine isoprene emissions totaling 0.92 Tg C yr−1. Sensitivity studies using different schemes for the euphotic zo...
Technical Note: In-situ quantification of aerosol sources and sinks over regional geographical scales
In-situ quantification aerosol sources regional geographical scales
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2009/7/23
In order to obtain the source/sink functions for atmospheric particulates located on the planetary surface or elevated in the atmosphere; direct aerosol emission measurements are required. For this pu...
Aerosol size-dependent below-cloud scavenging by rain and snow in the ECHAM5-HAM
size-dependent below-cloud scavenging rain snow ECHAM5-HAM
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2009/7/23
Wet deposition processes are highly efficient in the removal of aerosols from the atmosphere, and thus strongly influence global aerosol concentrations, and clouds, and their respective radiative forc...
Significant variations of trace gas composition and aerosol properties at Mt. Cimone during air mass transport from North Africa – contributions from wildfire emissions and mineral dust
trace gas composition North Africa wildfire emissions mineral dust
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2009/7/22
High levels of trace gas (O3 and CO) and aerosol (BC, fine and coarse particle volumes), as well as high scattering coefficient (σp) values, were recorded at the regional GAW-WMO station of Mt. Cimone...
Spatial and temporal UV irradiance and aerosol variability within the area of an OMI satellite pixel
UV irradiance OMI satellite pixel aerosol variability
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2009/7/22
Results of an experimental campaign that took place in the greater Thessaloniki area were used to investigate temporal and spatial UV variability within an OMI satellite pixel. UV irradiance and aeros...
Modelling multi-phase halogen chemistry in the remote marine boundary layer: investigation of the influence of aerosol size resolution on predicted gas- and condensed-phase chemistry
Modelling multi-phase halogen chemistry remote marine boundary layer aerosol size resolution
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2009/7/22
A coupled box model of photochemistry and aerosol microphysics which explicitly accounts for size-dependent chemical properties of the condensed-phase has been developed to simulate the multi-phase ch...