搜索结果: 1-15 共查到“理学 GCM”相关记录47条 . 查询时间(0.065 秒)
电离层电流产生的磁场是地磁场卫星测绘时需要剔除的干扰源.利用电离层热层模式TIE-GCM计算电离层中的中性风、重力驱动和压强梯度等形成的电离层电流的全球分布，分析电流在特定位置产生的磁场及磁场三分量随纬度的变化规律.结果表明，E层尤其是磁赤道和极区的电流密度较大，可达103nA·m-2量级，F层电流密度量级约为10nA·m-2.在磁静日（Kp≤ 1）夜间22：00LT-04：00LT，电离层电流在...
Scale interactions in the tropical Atlanticvariability simulated with a coupled GCM
coupled model Gulf of Guineaevents El Niñ o-Southern Oscillation timescaleinteractions clusters
2015/9/17
Warm and cold events in the Gulf of Guinea are an important feature in the interannual variability of the tropical Atlantic Ocean, and partly a manifestation of the equatorial Atlantic system's intrin...
Spatial and temporal analysis of the seasonal and interannual variability in the tropical Pacific simulated with a coupled GCM
coupled model El Nino-Southern Oscillation seasonal interannual heat content clusters
2015/9/17
In the first part of this work, the dominant time scales that explain the tropical variability of the first SINTEX simulation (ECHAM4(T30)-ORCA) are identified through a spectral analysis. Higher orde...
A system of conservative regridding for ice–atmosphere coupling in a General Circulation Model (GCM)
conservative regridding ice–atmosphere coupling
2014/12/18
The method of elevation classes, in which the ice
surface model is run at multiple elevations within each grid
cell, has proven to be a useful way for a low-resolution atmosphere inside a general ci...
Pliocene Model Intercomparison Project Experiment 1: implementation strategy and mid-Pliocene global climatology using GENESIS v3.0 GCM
Pliocene Model Intercomparison Project Experiment mid-Pliocene global climatology
2014/12/11
The midPliocene Warm Period (3.29 to
2.97 Ma BP) has been identified as an analogue for the future, with the potential to help understand climate processes
in a warmer than modern world.
A GCM Comparison of Plio-Pleistocene Interglacial-Glacial Periods in Relation to Lake El’gygytgyn, NE Arctic Russia
A GCM Comparison of Plio-Pleistocene Interglacial-Glacial Periods Lake El'gygytgyn Arctic Russia
2014/10/21
Until now, the lack of time-continuous, terrestrial paleoenvironmental data from the Pleistocene Arctic has made model simulations of past interglacials difficult to assess. Here, we compare climate s...
Two-moment bulk stratiform cloud microphysics in the GFDL AM3 GCM: description, evaluation, and sensitivity tests
Two-moment bulk stratiform cloud microphysics the GFDL AM3 GCM sensitivity tests
2010/9/14
A new stratiform cloud scheme including a two-moment bulk microphysics module, a cloud cover parameterization allowing ice supersaturation, and an ice nucleation parameterization has been implemented ...
Mapping technique of climate fields between GCM's and ice models
technique climate fields GCM's ice models
2010/2/5
Here, we present a mapping method OBLIMAP, which projects and interpolates fields like surface temperature, surface mass balance, and surface height between a geographical based coordinate system of a...
Quantifying atmospheric transport,chemistry,and mixing using a new trajectory-box model and a global atmospheric-chemistry GCM
atmospheric transport chemistry mixing new trajectory-box model global atmospheric-chemistry GCM
2010/2/5
We present a novel method for the quantification of transport, chemistry, and mixing along atmospheric trajectories based on a consistent model hierarchy. The hierarchy consists of the new atmospheric...
Low-frequency variability in idealised GCM experiments with circumpolar and localised storm tracks
Low-frequency variability idealised GCM experiments circumpolar localised storm tracks
2009/11/12
Idealised global circulation model simulations with circumpolar and localised (one and two) storm tracks are re-analysed to determine scaling, intermittency and phase-space structures. In a hundred ye...
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...
Comparison between Local Ensemble Transform Kalman Filter and PSAS in the NASA finite volume GCM–perfect model experiments
Local Ensemble Transform Kalman Filter PSAS NASA finite volume GCM–perfect model
2009/11/2
This paper compares the performance of the Local Ensemble Transform Kalman Filter (LETKF) with the Physical-Space Statistical Analysis System (PSAS) under a perfect model scenario. PSAS is a 3D-Var as...
Bayesian calibration of the Thermosphere-Ionosphere Electrodynamics General Circulation Model (TIE-GCM)
Bayesian calibration Thermosphere-Ionosphere Electrodynamics General Circulation Model
2010/2/5
In this paper, we demonstrate a procedure for calibrating a complex computer simulation model having uncertain inputs and internal parameters, with application to the NCAR Thermosphere-Ionosphere-Elec...
含随机效应GCM中回归参数阵两步估计的计算及其无偏性
随机效应 回归参数阵 两步估计 无偏估计
2009/9/21
首先给出了含随机效应增长曲线模型中回归参数阵两步估计的一个较为简单的计算
方法;然后给出了回归参数阵的可估函数的两步估计具有无偏性的一个基本结论,并证明了两种常见两步估计均具有无偏性;最后给出了
一个牙齿生长数据的实例模拟.