nasa-ibm-ai4science/surya-bench-coronal-extrapolation

Surya-Bench Coronal Field Extrapolation Task数据集使用基础模型模拟ADAPT-WSA PFSS代码，基于SDO/HMI观测数据。该数据集包含球谐系数，代表从光球到一个源表面（2.51 Rs）之间的磁势。FITS文件中还包含光球极性和开/闭场线掩码等变量。数据集覆盖时间从2010-05-01到2024-12-31，文件格式为FITS，共有64308个时间步，每天一个步长，球谐系数的阶数为90，使用Schmidt归一化。数据集总大小为46 GB。

The Surya-Bench Coronal Field Extrapolation Task dataset uses a foundation model to emulate the physics-based ADAPT-WSA PFSS code, driven by SDO/HMI observations. It includes spherical harmonic coefficients representing the magnetic potential between the photosphere and a source surface (set to 2.51 Rs). The FITS files also contain variables such as photospheric polarity and open/closed field line masks. The dataset covers the time period from 2010-05-01 to 2024-12-31, the file format is FITS, with a total of 64308 time steps, one per day, the spherical harmonic order is 90, and it uses Schmidt normalization. The total size of the dataset is 46 GB.