搜索结果: 1-15 共查到“大气科学 Dependence”相关记录19条 . 查询时间(0.371 秒)
Seasonal cycle and temperature dependence of pinene oxidation products, dicarboxylic acids and nitrophenols in fine and coarse air particulate matter
Seasonal cycle temperature dependence pinene oxidation products fine and coarse air particulate matter
2010/9/1
Filter samples of fine and coarse air particulate matter (PM) collected over a period of one year in central Europe (Mainz, Germany) were analyzed for water-soluble organic compounds (WSOCs), includin...
Impact of brown and clear carbon on light absorption enhancement, single scatter albedo and absorption wavelength dependence of black carbon
brown and clear carbon light absorption enhancement single scatter albedo black carbon
2010/8/12
The presence of clear coatings on atmospheric black carbon (BC) particles is known to enhance the magnitude of light absorption by the BC cores. Based on calculations using core/shell Mie theory, we d...
Pressure dependence of the deuterium isotope effect in the photolysis of formaldehyde by ultraviolet light
the deuterium isotope effect the photolysis of formaldehyde ultraviolet light
2010/8/12
The pressure dependence of the relative photolysis rate of HCHO vs. HCDO has been investigated for the first time, using a photochemical reactor at the University of Copenhagen. The dissociation of HC...
On the seasonal dependence of tropical lower-stratospheric temperature trends
the seasonal dependence tropical lower-stratospheric temperature trends
2010/8/12
This study examines the seasonality of tropical lower-stratospheric temperature trends using the Microwave Sounding Unit lower-stratospheric channel (T4) for 1980–2008. We present evidence that this s...
Grid resolution dependence in the reconstruction of an atmospheric tracer source
Grid resolution dependence reconstruction atmospheric tracer source
2009/11/9
Methods for reconstructing sources of inert atmospheric tracers from ground measurements are currently studied, tested, and even implemented (in accident-type radionuclide release backtracking, for re...
Summertime impact of convective transport and lightning NOx production over North America: modeling dependence on meteorological simulations
convective transport lightning NOx production North America meteorological simulations
2009/7/15
Global-scale chemical transport model simulations indicate lightning NOx dominates upper tropospheric O3 production above Eastern North America during summertime but vary in their estimates. To improv...
Temperature and humidity dependence of secondary organic aerosol yield from the ozonolysis of β-pinene
secondary organic aerosol yield ozonolysis β-pinene
2009/6/16
The temperature dependence of secondary organic aerosol (SOA) formation from ozonolysis of β-pinene was studied in a flow reactor at 263 K–303 K and 1007 hPa under dry and humid conditions (0% and 26%...
Temperature dependence of yields of secondary organic aerosols from the ozonolysis of α-pinene and limonene
secondary organic aerosols α-pinene limonene
2009/3/13
Secondary organic aerosol (SOA) formation has been investigated as a function of temperature and humidity for the ozone-initiated reaction of the two monoterpenes α-pinene (243–313 K) and limonene (25...
The time dependence of molecular iodine emission from Laminaria digitata
molecular iodine emission Laminaria digitata
2009/3/13
We present the first in situ detection of molecular iodine emitted from the brown macroalga Laminaria digitata under natural stress conditions. We show that the release of I2 occurs in short, strong b...
Dependence of solar radiative forcing of forest fire aerosol on ageing and state of mixture
solar radiative forcing forest fire aerosol mixture
2009/3/11
During airborne in situ measurements of particle size distributions in a forest fire plume originating in Northern Canada, an accumulation mode number mean diameter of 0.34 mm was observed over Linden...
Partitioning of reactive nitrogen（NOy）and dependence on meteorological conditions in the lower free troposphere
reactive nitrogen NOy lower free troposphere
2009/3/10
Results of continuous nitrogen oxide (NO), nitrogen dioxide (NO2), peroxyacetyl nitrate (PAN) and total reactive nitrogen (NOy) measurements along with seasonal field campaigns of nitric acid (HNO3) a...
Wavelength dependence of isotope fractionation in N2O photolysis
Wavelength dependence isotope fractionation N2O photolysis
2009/3/10
In previous reports on isotopic fractionation in the ultraviolet photolysis of nitrous oxide (N2O) only enrichments of heavy isotopes in the remaining N2O fraction have been found. However, most direc...
Saharan dust events at the Jungfraujoch: detection by wavelength dependence of the single scattering albedo and first climatology analysis
Saharan dust events Jungfraujoch single scattering albedo climatology analysis
2009/3/10
Scattering and absorption coefficients have been measured continuously at several wavelengths since March 2001 at the high altitude site Jungfraujoch (3580ma.s.l.). From these data, the wavelength dep...
Temperature and light dependence of the VOC emissions of Scots pine
Temperature light VOC emissions Scots pine
2009/2/8
The volatile organic compound (VOC) emission rates of Scots pine (Pinus sylvestris L.) were measured from trees growing in a natural forest environment at two locations in Finland. The observed total ...
Seasonal dependence of peroxy radical concentrations at a Northern hemisphere marine boundary layer site during summer and winter: evidence for radical activity in winter
peroxy radical concentrations Northern hemisphere marine boundary layer site
2009/1/21
Peroxy radicals (HO2+Σ RO2) were measured at the Weybourne Atmospheric Observatory (52° N, 1° E), Norfolk using a PEroxy Radical Chemical Amplifier (PERCA) during the winter and summer of 2002. The pe...