Computing Lagrangian statistics from tracer observations and a model output

Leonid I. Piterbarg

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Computing Lagrangian statistics from tracer observations and a model output

机译：根据示踪剂观测值和模型输出计算拉格朗日统计量

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A stable method of low computational cost is suggested for estimating Lagrangian trajectories by combining observations of a continuously distributed conservative tracer and a circulation model output (background velocity field). A theoretical error analysis for a homogeneous flow is provided while for a more sophisticated synthetic flow the error is evaluated numerically. The reduction in error compared to the background varies in the range 1-34% depending on the flow structure. Finally, the method is applied for estimating the absolute and relative dispersion in a gyre perturbed by periodic or stochastic fluctuations.

机译：通过结合连续分布的保守示踪剂和循环模型输出（背景速度场）的观测结果，提出了一种稳定的，低计算量的方法来估计拉格朗日轨迹。提供了均质流的理论误差分析，而对于更复杂的合成流，则通过数字评估误差。与背景相比，误差的减少范围在1-34％之间，具体取决于流动结构。最后，该方法用于估计受周期性或随机波动扰动的陀螺的绝对和相对色散。

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来源
《Applied Mathematical Modelling》 |2010年第11期|3674-3684|共11页
作者
Leonid I. Piterbarg;
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作者单位

Department of Mathematics, University of Southern California, Kaprielian Hall, Room 108, 3620 Vermont Avenue, Los Angeles, CA 90089-2532, United States;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
data fusion; inverse problem; dispersion; continuously distributed tracer;

机译：数据融合;反问题分散;连续分布的示踪剂;

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专利

1. A simple method for computing velocities from tracer observations and a model output [J] . Leonid I. Piterbarg Applied Mathematical Modelling . 2009,第9期

机译：从示踪剂观测和模型输出中计算速度的简单方法
2. Weak-constraint inverse modeling using HYSPLIT-4 Lagrangian dispersion model and Cross-Appalachian Tracer Experiment (CAPTEX) observations – effect of including model uncertainties on source term estimation [J] . Chai Tianfeng, Stein Ariel, Ngan Fong Geoscientific Model Development . 2018,第12期

机译：使用HYSPLIT-4拉格朗日色散模型和跨阿巴拉契亚示踪剂实验（CAPTEX）观测值的弱约束逆建模–包括模型不确定性对源项估计的影响
3. Weak-constraint inverse modeling using HYSPLIT-4 Lagrangian dispersion model and Cross-Appalachian Tracer Experiment (CAPTEX) observations – effect of including model uncertainties on source term estimation [J] . Chai Tianfeng, Stein Ariel, Ngan Fong Geoscientific Model Development Discussions . 2018,第12期

机译：使用Hysplit-4拉格朗日色散模型和跨阿巴拉契亚示踪实验（CAPTEX）观测的弱约束反向建模 - 包括模型不确定性在源期估算中的效果
4. Evaluation of Four Lagrangian Models Against the Cross-Appalachian and European Tracer Experiments [C] . B.A. Anderson, R.W. Brode NATO/CCMS International Technical Meeting on Air Pollution Modeling and Its Application . 2010

机译：对跨阿巴拉契亚和欧洲示踪实验的四拉拉格兰模型的评价
5. The response of thermocline ventilation to variability at the ocean surface from observations and offline tracer modeling. [D] . Shao, Andrew Edward. 2016

机译：根据观测和离线示踪剂模拟，温跃层通风对海面变化的响应。
6. Neural Systems with Numerically Matched Input-Output Statistic: Isotonic Bivariate Statistical Modeling [O] . Simone Fiori 2007

机译：具有数字匹配的输入输出统计的神经系统：等渗双变量统计建模
7. Weak-constraint inverse modeling using HYSPLIT Lagrangian dispersion model and Cross Appalachian Tracer Experiment (CAPTEX) observations – Effect of including model uncertainties on source term estimation [O] . Tianfeng Chai, Ariel Stein, Fong Ngan 2018

机译：使用Hysplit拉格朗日色散模型和交叉Appalachian示踪实验（CAPTEX）观测的弱约束反向建模 - 包括模型不确定性对源期限估计的效果

Computing Lagrangian statistics from tracer observations and a model output

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