搜索结果: 31-45 共查到“大气科学 surface”相关记录119条 . 查询时间(0.218 秒)
Kinetic double-layer model of aerosol surface chemistry and gas-particle interactions (K2-SURF): Degradation of polycyclic aromatic hydrocarbons exposed to O3, NO2, H2O, OH and NO3
Kinetic double-layer model aerosol surface chemistry gas-particle interactions K2-SURF
2009/12/31
We present a kinetic double-layer surface model (K2-SURF) that describes the degradation of polycyclic aromatic hydrocarbons (PAHs) on aerosol particles exposed to ozone, nitrogen dioxide, water vapor...
Surface ozone trend details and interpretations in Beijing, 2001–2006
Surface ozone trend details interpretations Beijing
2009/12/3
Beijing is a megacity situated in the rapidly developing Beijing-Tianjin-Hebei region of northern China. In this study, we analyze data on ozone and nitrogen oxide levels obtained at six urban sites i...
The influence of the circulation on surface temperature and precipitation patterns over Europe
circulation precipitation patterns surface temperature
2009/12/3
The atmospheric circulation clearly has an important influence on variations in surface temperature and precipitation. In this study we illustrate the spatial patterns of variation that occur for the...
Impacts of land surface properties and atmospheric CO2 on the Last Glacial Maximum climate：a factor separation analysis
land surface properties atmospheric CO2 Last Glacial Maximum climate
2009/12/3
Many sensitivity studies have been carried out, using climate models of different degrees of complexity to test the climate response to Last Glacial Maximum boundary conditions. Here, instead of addin...
Progress in understanding land-surface-atmosphere coupling over the Amazon: a review
land-surface-atmosphere the Amazon
2009/12/2
In the rainy season in Rondônia, convection in low-level westerly flows with low aerosol content resembles oceanic convection with precipitation from warm rain processes and little electrificati...
Surface fluxes and tropical intraseasonal variability: a reassessment
Surface fluxes tropical intraseasonal variability
2009/12/2
The authors argue for the hypothesis that interactive feedbacks involving surface enthalpy fluxes, both turbulent and radiative, are important to the dynamics of tropical intraseasonal variability. ...
Evaluating the potential of IASI ozone observations to constrain simulated surface ozone concentrations
IASI ozone observations to constrain simulated surface ozone concentrations
2009/11/19
A tracer study has been performed for two summers in 2003 and 2004 with a regional chemistry-transport model in order to evaluate the potential constraint that tropospheric ozone observations from nad...
Extreme Saharan dust event over the southern Iberian Peninsula in september 2007: active and passive remote sensing from surface and satellite
Extreme Saharan dust event southern Iberian Peninsula september 2007
2009/11/19
This study investigates aerosol optical properties during the extreme Saharan dust event detected from 3 to 7 September 2007 over Granada, southern Iberian Peninsula, with both active and passive remo...
Linear and nonlinear post-processing of numerically forecasted surface temperature
Linear and nonlinear post-processing numerically forecasted surface temperature
2009/11/12
In this paper we test different approaches to the statistical post-processing of gridded numerical surface air temperatures (provided by the European Centre for Medium-Range Weather Forecasts) onto th...
Extensive reduction of surface UV radiation since 1750 in world's populated regions
Extensive reduction surface UV radiation world's populated regions
2009/11/9
Human activity influences a wide range of components that affect the surface UV radiation levels, among them ozone at high latitudes. We calculate the effect of human-induced changes in the surface er...
Scale-dependency of surface fluxes in an atmospheric mesoscale model:effect of spatial heterogeneity in atmospheric conditions
Scale-dependency surface fluxes atmospheric mesoscale model spatial heterogeneity
2009/11/2
We examined the nonlinear effect of spatial heterogeneity in atmospheric conditions on the simulation of surface fluxes in the mesoscale model, MM5 by testing their scale-invariance from a tower footp...
Impact of dust aerosols on the radiative budget, surface heat fluxes, heating rate profiles and convective activity over West Africa during March 2006
dust aerosols surface heat fluxes convective activity West Africa
2009/9/27
The present work analyses the effect of dust aerosols on the surface and top of atmosphere radiative budget, surface temperature, sensible heat fluxes, atmospheric heating rate and convective activity...
Comparative study of the effect of water on the heterogeneous reactions of carbonyl sulfide on the surface of α-Al2O3 and MgO
water heterogeneous reactions carbonyl sulfide MgO
2009/9/2
Here we compared the heterogeneous reactions of carbonyl sulfide (OCS) on the surface of α-Al2O3 and MgO and the effect of water on the reactions at 300 K using Knudsen cell–mass spectrometry, diffuse...
Increasing surface ozone concentrations in the background atmosphere of Southern China, 1994–2007
Increasing surface ozone concentrations background atmosphere Southern China
2009/9/2
Tropospheric ozone is of great importance with regard to air quality, atmospheric chemistry, and climate change. In this paper we report the first continuous record of surface ozone in the background ...
Multi-species inversion of CH4, CO and H2 emissions from surface measurements
Multi-species CH4 CO H2 emissions surface measurements
2009/8/7
In order to study the spatial and temporal variations of the emissions of greenhouse gases and of their precursors, we developed a data assimilation system and applied it to infer emissions of CH4, CO...