搜索结果: 1-14 共查到“大气物理学 Estimation”相关记录14条 . 查询时间(0.106 秒)
The sensitivity of secondary organic aerosol component partitioning to the predictions of component properties – Part 1: A systematic evaluation of some available estimation techniques
secondary organic aerosol component component properties estimation techniques
2010/11/29
A large number of calculations of the absorptive partitioning of organic compounds have been made using a number of methods to predict the component vapour pressures, p0, and activity coefficients, γi...
Estimation of ECHAM5 climate model closure parameters with adaptive MCMC
ECHAM5 climate model closure parameters adaptive MCMC
2010/11/3
Climate models contain closure parameters to which the model climate is sensitive. These parameters appear in physical parameterization schemes where some unresolved variables are expressed by predefi...
GOMOS data characterisation and error estimation
GOMOS data characterisation error estimation
2010/10/11
The Global Ozone Monitoring by Occultation of Stars (GOMOS) instrument uses stellar occultation technique for monitoring ozone, other trace gases and aerosols in the stratosphere and mesosphere. The s...
Technical Note: Trend estimation from irregularly sampled, correlated data
Trend estimation irregularly sampled and correlated data
2010/8/16
Estimation of a trend of an atmospheric state variable is usually performed by fitting a linear regression line to a set of data of this variable sampled at different times. Often these data are irreg...
Estimation of Antarctic ozone loss from ground-based total column measurements
Antarctic ozone ground-based total column measurements
2010/8/16
The passive tracer method is used to estimate ozone loss from ground-based measurements in the Antarctic. A sensitivity study shows that the ozone depletion can be estimated within an accuracy of ~4%....
Technical Note: Vapor pressure estimation methods applied to secondary organic aerosol constituents from α-pinene oxidation: an intercomparison study
Vapor pressure estimation methods secondary organic aerosol constituents α-pinene oxidation
2010/8/16
We applied and compared seven vapor pressure estimation methods to the condensable compounds generated in the oxidation of α-pinene, as described by the state-of-the-art mechanism of the BOREAM model ...
Inter-comparison of source apportionment models for the estimation of wood burning aerosols during wintertime in an Alpine city (Grenoble, France)
source apportionment models wood burning aerosols wintertime an Alpine city
2010/8/13
The emission of organic aerosols (OA) in the ambient air by residential wood burning is nowadays a subject of great scientific concern and a growing number of studies aim at apportioning the influence...
Optimal estimation retrieval of aerosol microphysical properties from SAGE~II satellite observations in the volcanically unperturbed lower stratosphere
Optimal estimation aerosol microphysical properties SAGE~II satellite observations lower stratosphere
2010/8/12
Stratospheric aerosol particles under non-volcanic conditions are typically smaller than 0.1 μm. Due to fundamental limitations of the scattering theory in the Rayleigh limit, these tiny particles are...
Parameter estimation in an atmospheric GCM using the Ensemble Kalman Filter
Parameter estimation atmospheric GCM Ensemble Kalman Filter
2009/11/9
We demonstrate the application of an efficient multivariate probabilistic parameter estimation method to a spectral primitive equation atmospheric GCM. The method, which is based on the Ensemble Kalma...
Atmospheric number size distributions of soot particles and estimation of emission factors
Atmospheric number size distributions soot particles emission factors
2009/1/5
Number fractions of externally mixed particles of four different sizes (30, 50, 80, and 150 nm in diameter) were measured using a Volatility Tandem DMA. The system was operated in a street canyon (Eis...
Global estimation of burned area using MODIS active fire observations
Global estimation burned area MODIS active fire
2009/1/5
We present a method for estimating monthly burned area globally at 1° spatial resolution using Terra MODIS data and ancillary vegetation cover information. Using regression trees constructed for 14 di...
Technical note: analytical estimation of the optimal parameters for the EOF retrievals of the IASI Level 2 Product Processing Facility and its application using AIRS and ECMWF data
EOF retrievals IASI Level 2 Product Processing Facility ECMWF
2009/1/4
The Empirical Orthogonal Function (EOF) retrieval technique consists of calculating the eigenvectors of the spectra to later perform a linear regression between these and the atmospheric states, this ...
Emission rate and chemical state estimation by 4-dimensional variational inversion
Emission rate chemical state 4-dimensional variational inversion
2008/12/15
This study aims to assess the potential and limits of an advanced inversion method to estimate pollutant precursor sources mainly from observations. Ozone, sulphur dioxide, and partly nitrogen oxides ...
Estimation of the vertical profile of sulfur dioxide injection into the atmosphere by a volcanic eruption using satellite column measurements and inverse transport modeling
sulfur dioxide volcanic eruption
2008/11/13
An analytical inversion method has been developed to estimate the vertical profile of SO2 emissions from volcanic eruptions. The method uses satellite-observed total SO2 columns and an atmospheric tra...