系外行星大气建模中稀疏样本的插值与合成

IF 3.8 Q2 ASTRONOMY & ASTROPHYSICS The Planetary Science Journal Pub Date : 2024-06-12 DOI:10.3847/psj/ad50a7
Jacob Haqq-Misra, Eric T. Wolf, Thomas J. Fauchez and Ravi K. Kopparapu
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引用次数: 0

摘要

本文重点介绍了与大气模型数据的解释、相互比较和综合有关的地质统计学方法,并将其具体应用于系外行星大气模型。气候模型越来越多地被用于研究系外行星的理论和观测特性,其中包括从快速和理想化模型到较慢但更全面的模型等不同层次的模型。利用计算昂贵的模型探索大型参数空间可以通过稀疏采样技术来实现,但分析这种稀疏样本会给传统的插值函数带来挑战。普通克里金法是一种用变异图函数描述数据集空间分布的统计方法,可用于对任意维度的稀疏样本进行插值。在系外行星大气模型相互比较项目中,变异图本身也是描述模型数据空间分布的有用诊断工具。通用克里金法是另一种可以综合不同复杂程度模型计算的数据的方法,可用于将慢速模型的稀疏数据样本与快速模型的较大数据样本结合起来。普通克里金法和通用克里金法还可以提供一种方法,将模型预测与系外行星观测的稀疏样本综合起来,并可能在系外行星科学中得到其他应用。
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Interpolation and Synthesis of Sparse Samples in Exoplanet Atmospheric Modeling
This paper highlights methods from geostatistics that are relevant to the interpretation, intercomparison, and synthesis of atmospheric model data, with a specific application to exoplanet atmospheric modeling. Climate models are increasingly used to study theoretical and observational properties of exoplanets, which include a hierarchy of models ranging from fast and idealized models to those that are slower but more comprehensive. Exploring large parameter spaces with computationally expensive models can be accomplished with sparse sampling techniques, but analyzing such sparse samples can pose challenges for conventional interpolation functions. Ordinary kriging is a statistical method for describing the spatial distribution of a data set in terms of the variogram function, which can be used to interpolate sparse samples across any number of dimensions. Variograms themselves may also be useful diagnostic tools for describing the spatial distribution of model data in exoplanet atmospheric model intercomparison projects. Universal kriging is another method that can synthesize data calculated by models of different complexity, which can be used to combine sparse samples of data from slow models with larger samples of data from fast models. Ordinary and universal kriging can also provide a way to synthesize model predictions with sparse samples of exoplanet observations and may have other applications in exoplanet science.
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来源期刊
The Planetary Science Journal
The Planetary Science Journal Earth and Planetary Sciences-Geophysics
CiteScore
5.20
自引率
0.00%
发文量
249
审稿时长
15 weeks
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