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Failure analysis of parameter-induced simulation crashes in climate models
parameter-induced simulation crashes climate models
2014/12/12
Simulations using IPCC (Intergovernmental Panel
on Climate Change)-class climate models are subject to fail
or crash for a variety of reasons.
Comparison of UV irradiances from Aura/Ozone Monitoring Instrument (OMI) with Brewer measurements at El Arenosillo (Spain) – Part 1: Analysis of parameter influence
UV irradiances Aura/Ozone Monitoring Instrument Brewer measurements El Arenosillo parameter influence
2010/8/16
The main objective of this study is to compare the erythemal UV irradiance (UVER) and spectral UV irradiances (at 305, 310 and 324 nm) from the Ozone Monitoring Instrument (OMI) onboard NASA EOS/Aura ...
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...
The hygroscopicity parameter (κ) of ambient organic aerosol at a field site subject to biogenic and anthropogenic influences: relationship to degree of aerosol oxidation
ambient organic aerosol a field site biogenic and anthropogenic influences aerosol oxidation
2010/8/13
Cloud condensation nuclei (CCN) concentrations were measured at Egbert, a rural site in Ontario, Canada during the spring of 2007. The CCN concentrations were compared to values predicted from the aer...
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...
Multi-parameter uncertainty analysis of a bifurcation point
Multi-parameter uncertainty analysis bifurcation point
2009/11/9
Parameter uncertainty analysis of climate models has become a standard approach for model validation and testing their sensitivity. Here we present a novel approach that allows one to estimate the rob...
Aerosol single-scattering albedo and asymmetry parameter from MFRSR observations during the ARM Aerosol IOP 2003
Aerosol single-scattering albedo asymmetry parameter MFRSR ARM Aerosol
2008/12/12
Multi-filter Rotating Shadowband Radiometers (MFRSRs) provide routine measurements of the aerosol optical depth (τ) at six wavelengths (0.415, 0.5, 0.615, 0.673, 0.870 and 0.94 μm). The single-scatter...
A single parameter representation of hygroscopic growth and cloud condensation nucleus activity
hygroscopic growth cloud condensation nucleus
2008/12/8
We present a method to describe the relationship between particle dry diameter and cloud condensation nuclei (CCN) activity using a single hygroscopicity parameter κ. Values of the hygroscopicity para...
A single parameter representation of hygroscopic growth and cloud condensation nucleus activity – Part 2: Including solubility
parameter representation hygroscopic growth cloud condensation nucleus activity
2008/11/24
The ability of a particle to serve as a cloud condensation nucleus in the atmosphere is determined by its size, hygroscopicity and its solubility in water. Usually size and hygroscopicity alone are su...