Zeeman-Stokes on Instant Run

Nov 2024

On November 25, 2024, the ZeemanStokes web simulator (version 1) is now available to the community through the CCMC instant run (IR) service via this link.

This online tool provides an interactive platform for users to simulate instantaneous polarimetric radiances (I, Q, U, V) and to visualize their responses to atmospheric thermodynamics and electric field conditions (Jacobians). This simulator employs the full-Stokes simulation capability enabled by a polarized radiative transfer model called the Atmospheric Radiative Transfer Simulator (ARTS) at the backend. It has been integrated seamlessly with Earth’s whole atmosphere (NRLMSISE-00) and magnetic field (IRGF) models that CCMC currently hosts, so users could avoid the steep learning curve and can hit the ground running with their own parameter configurations (e.g., sensor height, viewing geometry, geolocation). This web tool was motivated as an independent validation tool to NASA’s EZIE mission, but the open-source and interactive nature makes it suitable for general purposes (e.g., instrument design, education, etc.). Currently it only simulates the 118 GHz O2 line with nadir and off-nadir capabilities. Interested users are encouraged to check the repository for new updates for other more advanced capabilities in the near future.