Spectral Fidelity of Earth's Terrestrial and Aquatic Ecosystems: Source Data

This data directory contains the critical files for executing the experiments described in the manuscript "Spectral Fidelity of Earth’s Terrestrial and Aquatic Ecosystems." The directory includes the following files: plsr: CSV files and wavelengths thereof, taken from Chadwick et al., Methods in Ecology and Evolution 2020 (https://doi.org/10.1111/2041-210X.13463). wavelengths_00xx.txt: wavelength files, with three ASCII columns signifying channel number, channel center in microns, and FWHM in microns. The file index "00xx" indicates the offset in nanometers from the original calibration "0000" aerosol_dust_sulf_smok.txt: aerosol model, in the ISOFIT format (https://doi.org/10.5281/zenodo.4614338), used for configuring the ISOFIT forward model surface.mat: surface model, in the ISOFIT format (https://doi.org/10.5281/zenodo.4614338), used for configuring the ISOFIT forward model aerosol_template.json: MODTRAN aerosol template, in the ISOFIT format (https://doi.org/10.5281/zenodo.4614338), used for configuring the ISOFIT forward model brodrick_reflectances.csv: reflectance spectra used for the analysis, taken from Chadwick et al., Methods in Ecology and Evolution 2020 (https://doi.org/10.1111/2041-210X.13463). veg_reflectances_reampled.txt: The spectra from brodrick_reflectances.csv, resampled to the common wavelength grid. caseII_water.mat: Hydrolight runs. This MATLAB-style file contains the following fields: data - a six dimensional lookup table for the aquatic experiments. It holds water-leaving reflectance indexed by [solar zenith, windspeed, chlorophyll-a, cdom, minerals, wavelengths] in that order. grids - the grid points for each of the first five quantities above wl - the wavelength grid for the data table lut_names - the names for each of the lookup table dimensions scale - the numerical lengthscale of [widnspeed, chlorophyll-a, cdom, minerals], used in optimization sigma - the prior standard deviation for [widnspeed, chlorophyll-a, cdom, minerals] mean - the prior mean for [widnspeed, chlorophyll-a, cdom, minerals] init - initial guess for [widnspeed, chlorophyll-a, cdom, minerals]本数据集目录包含执行论文《地球陆地与水生生态系统光谱保真度》中所述实验所需的全部关键文件。本目录包含以下文件： 1. plsr文件夹：包含来自Chadwick等人2020年发表于《Methods in Ecology and Evolution》的CSV格式文件及其对应波长数据（DOI: 10.1111/2041-210X.13463）。 2. wavelengths_00xx.txt：波长文件，包含三列ASCII格式数据，分别代表通道编号、通道中心波长（单位：微米）以及半高全宽（Full Width at Half Maximum, FWHM）。文件编号「00xx」代表相对于原始校准基准「0000」的纳米级偏移量。 3. aerosol_dust_sulf_smok.txt：气溶胶模型文件，采用ISOFIT格式（DOI: 10.5281/zenodo.4614338），用于配置ISOFIT正向模型。 4. surface.mat：地表模型文件，采用ISOFIT格式（DOI: 10.5281/zenodo.4614338），用于配置ISOFIT正向模型。 5. aerosol_template.json：MODTRAN气溶胶模板文件，采用ISOFIT格式（DOI: 10.5281/zenodo.4614338），用于配置ISOFIT正向模型。 6. brodrick_reflectances.csv：用于本分析的反射光谱数据集，源自Chadwick等人2020年发表于《Methods in Ecology and Evolution》的研究（DOI: 10.1111/2041-210X.13463）。 7. veg_reflectances_resampled.txt：将brodrick_reflectances.csv中的光谱重采样至通用波长网格后得到的结果文件。 8. caseII_water.mat：HydroLight运行结果文件，该MATLAB格式文件包含以下字段： - data：用于水生实验的六维查找表，按[太阳天顶角、风速、叶绿素a、有色溶解有机物（Colored Dissolved Organic Matter, CDOM）、矿物质、波长]的顺序索引水体离水反射率。 - grids：上述前五个变量对应的网格节点。 - wl：查找表数据所对应的波长网格。 - lut_names：查找表各维度的名称。 - scale：[风速、叶绿素a、有色溶解有机物、矿物质]的数值长度尺度，用于优化流程。 - sigma：[风速、叶绿素a、有色溶解有机物、矿物质]的先验标准差。 - mean：[风速、叶绿素a、有色溶解有机物、矿物质]的先验均值。 - init：[风速、叶绿素a、有色溶解有机物、矿物质]的初始猜测值。