搜索结果: 151-165 共查到“理学 Aerosol”相关记录684条 . 查询时间(0.155 秒)
The impact of the 1783–1784 AD Laki eruption on global aerosol formation processes and cloud condensation nuclei
the 1783–1784 AD Laki eruption global aerosol formation processes cloud condensation nuclei
2010/8/16
The 1783–1784 AD Laki flood lava eruption commenced on 8 June 1783 and released 122 Tg of sulphur dioxide gas over the course of 8 months into the upper troposphere and lower stratosphere above Icelan...
Anthropogenic aerosol radiative forcing in Asia derived from regional models with atmospheric and aerosol data assimilation
Anthropogenic aerosol radiative Asia regional models atmospheric aerosol data assimilation
2010/8/16
An estimate of monthly 3-D aerosol solar heating rates and surface solar fluxes in Asia from 2001 to 2004 is described here. This product stems from an Asian aerosol assimilation project, in which a) ...
Water-Soluble Organic Aerosol material and the light-absorption characteristics of aqueous extracts measured over the Southeastern United States
Water-Soluble Organic Aerosol material the light-absorption characteristics aqueous extracts the Southeastern United States
2010/8/13
Light absorption of fine particle (PM2.5) aqueous extracts between wavelengths of 200 and 800 nm were investigated from two data sets: 24-h Federal Reference Method (FRM) filter extracts from 15 South...
Relationship between wind speed and aerosol optical depth over remote ocean
wind speed aerosol optical depth remote ocean
2010/8/13
The effect of wind speed on aerosol optical depth (AOD) at 0.55 μm over remote ocean regions is investigated. Remote ocean regions are defined by the combination of AOD from satellite observation and ...
Aerosol optical properties and radiative forcing in the high Himalaya based on measurements at the Nepal Climate Observatory-Pyramid site (5079 m a.s.l.)
the high Himalaya measurements the Nepal Climate Observatory-Pyramid site
2010/8/13
Intense anthropogenic emissions over the Indian sub-continent lead to the formation of layers of particulate pollution that can be transported to the high altitude regions of the Himalaya-Hindu-Kush (...
The Coupled Aerosol and Tracer Transport model to the Brazilian developments on the Regional Atmospheric Modeling System (CATT-BRAMS) – Part 2: Model sensitivity to the biomass burning inventories
the biomass burning inventories the Brazilian developments the Regional Atmospheric Modeling System
2010/8/13
We describe an estimation technique for biomass burning emissions in South America based on a combination of remote-sensing fire products and field observations, the Brazilian Biomass Burning Emission...
Size-dependent aerosol deposition velocities during BEARPEX'07
Size-dependent aerosol deposition velocities BEARPEX'07
2010/8/13
Aerosol concentrations and 3-D winds were measured from 9 to 25 September 2007, above a pine forest in California. The measurements were combined using the eddy covariance (EC) technique to determine ...
Estimated total emissions of trace gases from the Canberra Wildfires of 2003: a new method using satellite measurements of aerosol optical depth & the MOZART chemical transport model
the Canberra Wildfires of 2003 aerosol optical depth the MOZART chemical transport model
2010/8/13
In this paper we describe a new method for estimating trace gas emissions from large vegetation fires using satellite measurements of aerosol optical depth (AOD) at 550 nm, combined with an atmospheri...
Chemical evolution of secondary organic aerosol from OH-initiated heterogeneous oxidation
Chemical evolution secondary organic aerosol OH-initiated heterogeneous oxidation
2010/8/13
The heterogeneous oxidation of laboratory Secondary Organic Aerosol (SOA) particles by OH radicals was investigated. SOA particles, produced by reaction of α-pinene and O3, were exposed to OH radicals...
The role of the particle size distribution in assessing aerosol composition effects on simulated droplet activation
the particle size distribution aerosol composition effects simulated droplet activation
2010/8/13
Variations in the chemical composition of atmospheric aerosols alter their hygroscopicity and can lead to changes in the cloud-active fraction of the aerosols, or cloud condensation nuclei (CCN) numbe...
Quantitative estimates of the volatility of ambient organic aerosol
ambient organic aerosol a tandem thermodenuder-aerosol mass spectrometer system Mexico City
2010/8/13
Measurements of the sensitivity of organic aerosol (OA, and its components) mass to changes in temperature were recently reported by Huffman et al.~(2009) using a tandem thermodenuder-aerosol mass spe...
Determination of particulate lead using aerosol mass spectrometry: MILAGRO/MCMA-2006 observations
particulate lead aerosol mass spectrometry MILAGRO/MCMA-2006 observations
2010/8/13
We report the first measurements of particulate lead (Pb) from Aerodyne Aerosol Mass Spectrometers, which were deployed in and around Mexico City during the Megacity Initiative: Local and Global Resea...
Mexico city aerosol analysis during MILAGRO using high resolution aerosol mass spectrometry at the urban supersite (T0) – Part 2: Analysis of the biomass burning contribution and the non-fossil carbon fraction
MILAGRO high resolution aerosol mass spectrometry the urban supersite the biomass burning contribution the non-fossil carbon fraction
2010/8/13
Submicron aerosol was analyzed during the MILAGRO field campaign in March 2006 at the T0 urban supersite in Mexico City with a High-Resolution Aerosol Mass Spectrometer (AMS) and complementary instrum...
Investigation of the sources and processing of organic aerosol over the Central Mexican Plateau from aircraft measurements during MILAGRO
organic aerosol the Central Mexican Plateau aircraft measurements MILAGRO
2010/8/13
Organic aerosol (OA) represents approximately half of the submicron aerosol in Mexico City and the Central Mexican Plateau. This study uses the high time resolution measurements performed onboard the ...
Global distribution of the effective aerosol hygroscopicity parameter for CCN activation
Global distribution the effective aerosol hygroscopicity parameter CCN activation
2010/8/13
In this study we use the ECHAM/MESSy Atmospheric Chemistry (EMAC) model to simulate global fields of the effective hygroscopicity parameter κ which approximately describes the influence of chemical co...