Tropospheric Emissions: Monitoring of Pollution (TEMPO) nitrogen dioxide and formaldehyde retrievals

We present the status of the Tropospheric Emissions: Monitoring of Pollution (TEMPO) nitrogen dioxide (NO₂) and formaldehyde (HCHO) retrievals one year after their public release. After multiple version updates, the TEMPO Level 2 NO₂ and HCHO products have undergone significant enhancements to improve the performance and accuracy of the slant column retrievals, air mass factor calculations and post-processing corrections. Upcoming version 4 will include improved destriping for NO₂ and background for HCHO corrections. We illustrate the performance of both retrievals, evaluating their fitting uncertainty and showing comparisons with independent correlative measurements and other satellite products showcasing small noise levels, good accuracy, remarkable correlation and well quantified biases. We continue by illustrating the capacity of TEMPO products focusing on different case studies showing TEMPO’s high temporal and spatial resolution. We finalize discussing aspects of the retrievals subject to improvement, our strategies to enhance their performance and the development of near real time pipelines.