搜索结果: 106-120 共查到“大气科学 aerosols”相关记录177条 . 查询时间(0.249 秒)
Growth of upper tropospheric aerosols due to uptake of HNO3
upper tropospheric aerosols HNO3
2009/2/24
The effect of nitric acid on the equilibrium size distributions of upper tropospheric aerosols is calculated as a function of relative humidity. It is shown that HNO3 concentrations above a few tenths...
The vertical distribution of aerosols, Saharan dust and cirrus clouds in Rome (Italy) in the year 2001
aerosols Saharan dust cirrus clouds Rome
2009/2/23
A set of 813 lidar profiles of tropospheric aerosol and cirrus clouds extinction and depolarization observed in Rome, Italy, between February 2001 and February 2002 is analyzed and discussed. The year...
Study of the effect of different type of aerosols on UV-B radiation from measurements during EARLINET
aerosols UV-B radiation EARLINET
2009/2/23
Routine lidar measurements of the vertical distribution of the aerosol extinction coefficient and the extinction-to-backscatter ratio have been performed at Thessaloniki, Greece using a Raman lidar sy...
Hydrocarbon-like and oxygenated organic aerosols in Pittsburgh: insights into sources and processes of organic aerosols
Hydrocarbon-like oxygenated organic aerosols Pittsburgh organic aerosols
2009/2/19
A recently developed algorithm (Zhang et al., 2005) has been applied to deconvolve the mass spectra of organic aerosols acquired with the Aerosol Mass Spectrometer (AMS) in Pittsburgh during September...
Observation of 2-methyltetrols and related photo-oxidation products of isoprene in boreal forest aerosols from Hyytiälä, Finland
2-methyltetrols photo-oxidation products isoprene boreal forest aerosols Finland
2009/2/18
Oxidation products of isoprene including 2-methyltetrols (2-methylthreitol and 2-methylerythritol), 2-methylglyceric acid and triol derivatives of isoprene (2-methyl-1,3,4-trihydroxy-1-butene (cis and...
Application of several activity coefficient models to water-organic-electrolyte aerosols of atmospheric interest
several activity coefficient models water-organic-electrolyte aerosols atmospheric interest
2009/2/17
In this work, existing and modified activity coefficient models are examined in order to assess their capabilities to describe the properties of aqueous solution droplets relevant in the atmosphere. F...
Surface pressure retrieval from SCIAMACHY measurements in the O2 A Band: validation of the measurements and sensitivity on aerosols
Surface pressure retrieval sensitivity aerosols
2009/2/16
We perform surface pressure retrievals from cloud-free Oxygen A band measurements of SCIAMACHY. These retrievals can be well validated because surface pressure is a quantity that is, in general, accu...
Measurements of Saharan dust aerosols over the Eastern Mediterranean using elastic backscatter-Raman lidar, spectrophotometric and satellite observations in the frame of the EARLINET project
Saharan dust aerosols Eastern Mediterranean EARLINET project
2009/2/13
We report on the vertical distributions of Saharan dust aerosols over the N.E. Mediterranean region, which were obtained during a typical dust outbreak on August 2000, by two lidar systems located in ...
The direct radiative effect of biomass burning aerosols over southern Africa
radiative effect biomass burning aerosols southern Africa
2009/2/12
A multi-column radiative transfer code is used to assess the direct radiative effect of biomass burning aerosols over the southern African region during September. The horizontal distribution of bioma...
Polar organic compounds in rural PM2.5 aerosols from K-puszta, Hungary, during a 2003 summer field campaign: Sources and diel variations
Polar organic compounds rural PM2.5 aerosols K-puszta diel variations
2009/2/12
In the present study, we examined PM2.5 continental rural background aerosols, which were collected during a summer field campaign at K-puszta, Hungary (4 June-10 July 2003), a mixed coniferous/decidu...
Spatial and temporal distribution of atmospheric aerosols in the lowermost troposphere over the Amazonian tropical rainforest
Spatial and temporal distribution atmospheric aerosols lowermost troposphere Amazonian tropical rainforest
2009/2/11
We present measurements of aerosol physico-chemical properties below 5 km altitude over the tropical rain forest and the marine boundary layer (MBL) obtained during the LBA-CLAIRE 1998 project. The MB...
The role of organic aerosols in homogeneous ice formation
organic aerosols homogeneous ice formation
2009/2/7
Recent field observations suggest that the fraction of organic-containing aerosol particles in ice cloud particles is diminished when compared to the background aerosol prior to freezing. In this work...
Radiocarbon analysis in an Alpine ice core: record of anthropogenic and biogenic contributions to carbonaceous aerosols in the past（1650–1940）
Radiocarbon analysis Alpine ice core anthropogenic and biogenic contributions carbonaceous aerosols
2009/1/21
Long-term concentration records of carbonaceous particles (CP) are of increasing interest in climate research due to their not yet completely understood effects on climate. Nevertheless, only poor dat...
A mass spectrometric study of secondary organic aerosols formed from the photooxidation of anthropogenic and biogenic precursors in a reaction chamber
mass spectrometric study secondary organic aerosols photooxidation of anthropogenic biogenic precursors reaction chamber
2009/1/20
An Aerodyne Aerosol Mass Spectrometer (AMS) has been utilised to provide on-line measurements of the mass spectral signatures and mass size distributions of the oxidation products resulting from irrad...
Radiative forcing by aerosols as derived from the AeroCom present-day and pre-industrial simulations
Radiative forcing aerosols AeroCom present-day pre-industrial simulations
2009/1/20
Nine different global models with detailed aerosol modules have independently produced instantaneous direct radiative forcing due to anthropogenic aerosols. The anthropogenic impact is derived from th...