搜索结果: 1-15 共查到“理学 HAM”相关记录18条 . 查询时间(0.095 秒)
Numerical issues associated with compensating and competing processes in climate models: an example from ECHAM-HAM
Numerical issues associated compensating and competing processes climate models ECHAM-HAM
2014/12/12
The purpose of this paper is to draw attention to the need for appropriate numerical techniques to represent process interactions in climate models. In two versions of the ECHAM-HAM model, different t...
Evaluation of the sectional aerosol microphysics module SALSA implementation in ECHAM5-HAM aerosol-climate model
the sectional aerosol microphysics module SALSA ECHAM5-HAM aerosol-climate model
2014/12/10
We present the implementation and evaluation of a sectional aerosol microphysics module SALSA within the aerosol-climate model ECHAM5-HAM. This aerosol microphysics module has been designed to be flex...
REMO-HAM is a new regional aerosol-climate model. It is based on the REMO regional climate model and includes most of the major aerosol processes. The structure for aerosol is similar to the global ae...
Aerosol nucleation and its role for clouds and Earth's radiative forcing in the aerosol-climate model ECHAM5-HAM
Aerosol nucleation clouds and Earth's radiative forcing the aerosol-climate model ECHAM5-HAM
2010/11/30
Nucleation from the gas phase is an important source of aerosol particles in the Earth's atmosphere, contributing to the number of cloud condensation nuclei, which form cloud droplets. We have impleme...
Comparing of the HAM with the HPM in finding the natural frequency of a nonlinear oscillating system
Frequency Nonlinear oscillation Series solutions
2010/9/13
In this article, we use an efficient analytical method called homotopy analysis method (HAM) to derive the frequency of a nonlinear oscillating system. Unlike the perturbation method, the HAM does not...
Explicit approximate solution for finding the natural frequency of the motion of pendulum by using the HAM
Frequency Nonlinear oscillation Series solutions
2010/9/13
In this work, we use a powerful analytical method called homotopy analysis method (HAM) to derive the frequency of a nonlinear oscillating system. Unlike the perturbation method, the HAM does not requ...
A Ham Sandwich Analogue for Quaternionic Measures and Finite Subgroups of S^3
Ham Sandwich Analogue Quaternionic Measures Finite Subgroups of S^3
2010/12/14
A “ham sandwich” theorem is established for n quater-nionic Borel measures on quaternionic space Hn. For each finite sub-group G of S3.
Evaluation of simulated aerosol properties with the aerosol-climate model ECHAM5-HAM using observations from the IMPACT field campaign
simulated aerosol properties the aerosol-climate model ECHAM5-HAM the IMPACT field campaign
2010/8/25
In May 2008, the measurement campaign IMPACT for observation of atmospheric aerosol and cloud properties was conducted in Cabauw, The Netherlands. With a nudged version of the coupled aerosol-climate ...
Influences of in-cloud aerosol scavenging parameterizations on aerosol concentrations and wet deposition in ECHAM5-HAM
in-cloud aerosol aerosol concentrations ECHAM5-HAM
2010/2/21
A diagnostic cloud nucleation scavenging scheme, which determines stratiform cloud scavenging ratios for both aerosol mass and number distributions, based on cloud droplet, and ice crystal number conc...
Aerosol size-dependent below-cloud scavenging by rain and snow in the ECHAM5-HAM
size-dependent below-cloud scavenging rain snow ECHAM5-HAM
2009/7/23
Wet deposition processes are highly efficient in the removal of aerosols from the atmosphere, and thus strongly influence global aerosol concentrations, and clouds, and their respective radiative forc...
Sensitivity of aerosol concentrations and cloud properties to nucleation and secondary organic distribution in ECHAM5-HAM global circulation model
aerosol concentrations cloud properties secondary organic distribution ECHAM5-HAM global circulation model
2009/3/13
The global aerosol-climate model ECHAM5-HAM was modified to improve the representation of new particle formation in the boundary layer. Activation-type nucleation mechanism was introduced to produce o...
The aerosol-climate modelling system ECHAM5-HAM is introduced. It is based on a flexible microphysical approach and, as the number of externally imposed parameters is minimised, allows the application...
Aerosol activation and cloud processing in the global aerosol-climate model ECHAM5-HAM
Aerosol activation cloud processing global aerosol-climate model
2009/1/12
A parameterization for cloud processing is presented that calculates activation of aerosol particles to cloud drops, cloud drop size, and pH-dependent aqueous phase sulfur chemistry. The parameterizat...
Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM
microphysics aerosol ECHAM5-HAM
2008/11/12
The double-moment cloud microphysics scheme from ECHAM4 that predicts both the mass mixing ratios and number concentrations of cloud droplets and ice crystals has been coupled to the size-resolved aer...
Modeling cosmogenic radionuclides 10Be and 7Be during the Maunder Minimum using the ECHAM5-HAM General Circulation Model
cosmogenic radionuclides Maunder Minimum ECHAM5-HAM General Circulation Model
2008/11/7
All existing 10Be records from Greenland and Antarctica show increasing concentrations during the Maunder Minimum period (MM), 1645–1715, when solar activity was very low and the climate was colder (l...