All-Sky Satellite Radiance Data Assimilation in JEDI

The Joint Center for Satellite Data Assimilation (JCSDA) is processing satellite radiance data using JEDI (Joint Effort for Data assimilation Integration) software. The Unified Forward Operators (UFO) in JEDI uses the Community Radiative Transfer Model (CRTM) to simulate numerical model brightness temperature or visible reflectance to compare to observations. UFO is also responsible for quality control, assignment of observational errors, and bias correction. The USA GOES-East/West satellite data were resampled to a common spacing of 64 or 8 km spacing for sensitivity tests. The typical Cloud Impact Parameter function by Okamoto et al (2014) to assign observational error in clouds was scaled to lower the errors where model background was nearest the observed values. In this presentation, we aim to show how JEDI performs while assimilating GOES water vapor, infrared, and visible reflectances at varying resolutions while using NOAA's Unified Forecast System (UFS) within the GFS model (FV-3).