The IASI/Metop pyrogenic HONO product v2

This dataset comprises the version 2 of the pyrogenic HONO product retrieved from IASI/Metop-A (Oct 2007 - Sept 2021), IASI/Metop-B (March 2013 - Sept 2023), and IASI/Metop-C (Sept 2019 - Sept 2023) using the Artificial Neural Network for IASI (ANNI) version 4 retrieval scheme. Each day with successful pyrogenic HONO detections is represented by a .nc file per instrument. For detailed information on the HONO product, please refer to Franco et al. (2023) "Pyrogenic HONO seen from space: insights from global IASI observations" (ACP, submitted), and for a description of the ANNI v4 retrievals, please consult Clarisse et al. (2023) "The IASI NH3 version 4 product: averaging kernels and improved consistency" (AMT, https://doi.org/10.5194/amt-16-5009-2023). Prior to using this dataset, we recommend reaching out to the main developers Bruno Franco ([e-mail]) and Lieven Clarisse ([e-mail]) for guidance and information on more recent product versions.

Compared to v1, IASI HONO product v2 contains more realistic error estimates related to the uncertainties on the fire plume altitude.