A number of IVM data are reprocessed on days between Feb 7, 2020 and Dec 22, 2021 where conjugate observation periods are present. The long list of these data is noted below. This correctly flags the IVM data mid-manuever to be good. It is recommended that if one is interested in data obtained during these short periods of time that you work with the latest revision of the data where the data quality flag is correct. Watch for timestamps reflecting the reprocessing date in February 2022 and an increase in the revision number over previously available data. Zip files containing these data will be published by Feb 14.

The EUV Level 1 (L1) product containing EUV limb radiances has been updated to V3. This resolves primarily remaining issues with flatfielding. The Level 2 (L2) products are now re-run using these L1 inputs. The retrieval algorithm hasn't changed but the revision number has been indexed on the L2 products. This now extends the L2 products into 2021.

New IVM Level 2 data (Version 5 of Product 2.7) are now available. This update improves the running correction for observed bias, using a measurement window that extends days into the future to inform the correction. As such, the data are released several weeks behind other products (2.2 and 2.4 for example) We recommend that users migrate to these products (available on the ICON FTP site) and review the documentation available here.

An update to the ICON MIGHTI 2.3 product for MLT temperatures is coming shortly to the public FTP site. It includes a number of changes related to the flat field of the instrument when making O2 A-band measurements at 5 different wavelengths. This extends the range of altitudes and solar zenith angles of available temperatures from both MIGHTI A and B, and reduces the differences in results from the two channels. Please see the Documentation online for details of this product update.

UPDATE: v5 of the temperature product is now on the public site.

The ICON FUV 2.5 product for nighttime O+ profiles is updated to version 4 and available now in the public FTP archive. This product now contains a data quality flag indicating the possibility of additional radiance in the scene due to precipitation of conjugate photo electrons. This is further described in the product documentation, available on the Data page of this site.