遥感exo-earths的根本挑战


每个1,874个型号的高分辨率光谱。顶部面板显示每个型号的辐射从350nm到80米。The middle panel shows the color-coded ratio of the planet’s radiance to the incident stellar flux, as a function of wavelength and fractional habitability, hab, such that the ‘most-habitable’ planets are at the top of the plot, and the ‘least-habitable’ at the bottom. Wavelengths at which hab varies with normalized radiance the most are particularly interesting for observational characterization. This is highlighted in the bottom panel, where the square of the Pearson’s correlation coefficient between hab and the log normalized radiance is shown for each wavelength. The midpoint of the middle panel’s colorbar indicates the point at which thermal emission outweighs reflected light. Models with hab=0 or hab=1 are included in the middle panel as small extensions above and below the 0–1 range, sorted by mean annual surface temperature. We have indicated the wavelengths of the 4 strongest local maxima in the correlation coefficient with vertical dashed lines in the bottom panel, and local maxima of the covariance are shown with orange dash-dotted lines. Note that despite obvious trends, there are clear degeneracies in the observables represented by a given climate state. Note that we have not included any measurement errors, which would only exacerbate the problem.

推断居住区中陆地外产的气候和表面条件是外产科学领域的主要目标。这种追求需要统计分析人口的人口,以及对各个行星的气候的深入分析。

鉴于适用性和表面液体水之间的紧密关系,重要的是要询问水是否可以是水可以是液体,χbab的一部分。我们已经生产了一系列的1,874个3D气候模型,为每个模型计算了全相反射率和发射光谱,以研究是否具有高质量直接成像或次要Eclipse光谱可行的表面气候推理。这些模型代表了大约200,000年气候总数和超过50,000个CPU的结果,以及大约100 GB模型银行及其相关光谱正在公开可供社区使用。我们发现光谱和χχ之间存在相关性,允许统计方法。

然而,我们的模型银行产生的气候观测中的光谱退化表明,个人气候的推断可能是依赖的,并且可能在气候参数空间的详尽探索中可能是不可能的。因此,可居住的行星上潜在气候的多样性对偏远地区的偏远努力构成了根本挑战。

Adiv Paradise,Kristen Menou,Christopher Lee,Bo Lin Fan

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主题:地球和行星天体物理学(Astro-Ph.EP);天体物理学仪器和方法(Astro-ph.im)
Cite是:ARXIV:2106.00079 [Astro-Ph.EP](或Arxiv:2106.00079V1这个版本的[Astro-Ph.ep])
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来自:Adiv Paradise
[v1]星期一,5月31日19:55:00 UTC(17,308 KB)
https://arxiv.org/abs/2106.00079.
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