ARTS Absorption Lookup Table for a Wide Range of Atmospheric Conditions

<strong>General description</strong> This dataset provides an absorption lookup table for the Atmospheric Radiative Transfer Simulator (ARTS). The data is stored in the ARTS XML data format. The dataset consists of the following files: abs_lookup.xml <em>Meta data describing the lookup table in ASCII format</em> abs_lookup.xml.bin <em>The grids and absorption cross section in binary format</em> The lookup table covers wavenumbers from 10 to 3,250 cm^-1. It is valid for surface temperatures between 200 to 400 Kelvin and water vapor mixing ratios from 4e-5 up to 0.4. The spectral coverage in combination with the wide range of validity make the lookup table suitable to calculate radiative fluxes even in extreme climates. The dataset includes absorption cross-sections for the following species: CH4 CO CO2 H2O N2 N2O O2 O3 <strong>Usage with the radiative-convective equilibrium model konrad</strong> The lookup table can be used by the ARTS radiation class provided by the radiative-convective equilibrium (RCE) model konrad. This allows the user to perform RCE simulations with line-by-line longwave radiation. The environment variable ``KONRAD_LOOKUP_TABLE`` is used to tell the model where the lookup table is located: <pre><code class="language-bash">export KONRAD_LOOKUP_TABLE="path/to/abs_lookup.xml"</code></pre> <strong>References</strong><br> ARTS: radiativetransfer.org<br> konrad: github.com/atmtools/konrad<br>**通用说明** 本数据集为大气辐射传输模拟器（Atmospheric Radiative Transfer Simulator，ARTS）提供吸收查找表。数据以ARTS XML数据格式存储。本数据集包含以下文件：`abs_lookup.xml`（以ASCII格式描述该查找表的元数据）；`abs_lookup.xml.bin`（以二进制格式存储的网格与吸收截面数据）。 该查找表的波数覆盖范围为10至3250 cm⁻¹，适用于200至400开尔文的地表温度以及4×10⁻⁵至0.4的水汽混合比。凭借其光谱覆盖范围与宽泛的适用范围，该查找表可适用于极端气候场景下的辐射通量计算。本数据集包含以下大气组分的吸收截面：CH₄、CO、CO₂、H₂O、N₂、N₂O、O₂、O₃。 **与辐射对流平衡模型konrad联用** 该查找表可由辐射对流平衡（Radiative-Convective Equilibrium，RCE）模型konrad提供的ARTS辐射类调用，支持用户开展基于逐线长波辐射的RCE模拟。可通过环境变量`KONRAD_LOOKUP_TABLE`告知模型查找表的存储路径： bash export KONRAD_LOOKUP_TABLE="path/to/abs_lookup.xml" **参考文献** ARTS: radiativetransfer.org konrad: github.com/atmtools/konrad