| 6 November | AC SAF Operations Report 1/2024 and AC SAF Service Specification (issue 1.8) have been published. |
| 20 September | IASI level 2 CO and SO2 climate data records (CDRs) have been released. |
| 5 August | Degraded data quality on some GOME-2B L2 trace gas products. Read more... |
| 25 June | European UV product's information page and online quality monitoring page have been published. |
| 6 May | KNMI plans to upgrade the AC SAF processors on Tuesday, 14 May between 05:00 - 13:00 UTC. Read more... |
| 18 April | AC SAF Operations Report 2/2023 has been published. |
| 24 January | The latest AC SAF Operations Reports have been updated. |
| 3 January | The coarse resolution ozone profile product is now available only via special request to the AC SAF Heldesk. |
| 13 December | The latest AC SAF Operations Reports have been updated. |
| 21 November | DLR ATMOS ftp server will have a service outage due to system upgrade on 29 November, 10:00-12:00 CET. |
| 25 October | AC SAF Operations Report 1/2022 has been published. |
| 23 June | New AC SAF Service Specification (issue 1.6) has been published. |
| 18 May | NRT IASI HNO3 and total O3 / O3 profile products are now available. |
| 2 May | Tropospheric BrO data record has been released. |
| 20 April | NRT UV index products (clear-sky and cloud-corrected) based on Metop-C data are now available. |
| 14 April | GOME-2A/B high-resolution ozone profile (OHP) data record is now available. |
| 7 April | AC SAF Operations Report 2/2021 has been published. |
| 24 February | Archiving of GOME-2A high-resolution ozone profile (OHP-A) data record is complete. Both GOME-2A/B data records will be officially released as soon as the formal review process with EUMETSAT is complete. |
| 7 February | The archiving of GOME-2B high-resolution ozone profile (OHP-B) data record (see the news from 10 January) is now complete. Archiving of OHP-A data record is still ongoing. |
| 27 January | Metop-C IASI near real-time CO and SO2 products have been upgraded from 'demonstrational' to 'operational' status. |
| 10 January | Temporary shortage of high-resolution ozone profile products
Read more... |
| 16 December | The latest AC SAF Operations Reports have been updated. |
| 16 November | Metop-A de-orbiting has begun. Read more... |
| 15 October | Metop-A is planned to be de-orbited in November 2021. Read more... |
| 20 September | AC SAF Operations Report 1/2021 has been published. |
| 8 June | Total CHOCHO column data record released. |
| 21 May | KNMI plans to upgrade the AC SAF processors on Thursday, 3 June between 07:00 - 11:00 UTC. Read more... |
| 6 May | IASI SO2 altitude product released as "demonstrational". Read more... |
| 15 April | Operational status for GOME-2C SO2 total columns. Read more... |
| 25 February | Open Call for L3 data validation released. |
| 17 February | Absorbing Aerosol Height data record released. |
| 3 February | Temporary shortage of Absorbing Aerosol Height products. Read more... |
| 16 December | Validation Report for the Metop-C total O3 products has been published. |
| 14 December | NRT and offline Absorbing Aerosol Height products available. Read more... |
| 1 December | New AC SAF main web pages have been published. |
| 30 November | DLR online quality monitoring tool is operational. Read more... |
| 26 November | Metop-C near real-time Absorbing Aerosol Height product is now available via EUMETCast. |
| 26 October | New Metop-C products and ordering service discontinuation. Read more... |
| 13 October | GOME-2C NRT and offline trace gases processed at DLR are available via EUMETCast and AC SAF DLR archive. Data access: NRT and offline.
Validation Reports for the Absorbing Aerosol Height and Metop-C NO2, BrO and HCHO products have been published. Product User Manual for the ozone profile products has been updated. |
| 12 October | Product User Manual and Algorithm Theoretical Basis Document for Absorbing Aerosol Height products have been published |
| 30 September | AC SAF Service Specification 1.4 has been published. |
| 28 September | AC SAF product ordering service through the EUMETSAT Data Centre will be discontinued. Read more... |
| 21 September | AC SAF Operations Report 1/2020 has been published |
| 18 September | Five new publications in the context of AC SAF added to the list |
| 18 August | Possible degradation of Metop-A GOME-2 Level 2 product quality. Read more... |
| 16 June | DLR FTP server changed |
| 30 March | AC SAF Operations Report 2/2019 has been published. |
| 25 March | EUMETCast channel used for the distribution of AC SAF data changes. Read more... |
| 4 March | Offline surface UV updated to version 2.2. Read more... |
| 2 March | Vertical ozone profile and absorbing aerosol index products updated. Read more...
|
| 3 February | Surface UV data record has been released. At the same time, the availability of the offline OUV data via EDC has changed. Read more... |
| 10 December | AC SAF Operations Reports 2/2017 and 1/2018 have been updated. |
| 10 December | Risk of degraded product quality between 31 December 2018 and 17 March 2019 due to Metop-A satellite being in drifting orbit. Read more... |
| 1 December | Processing of orbit-based offline total column products has been discontinued. Read more... |
| 19 November | Update of the AC SAF GOME-2 ozone profile products has been successfully completed. |
| 4 October | AC SAF Operations Report 2/2017 has been updated. |
| 20 September | AC SAF Operations Report 1/2018 has been published. |
| 13 August | The AC SAF GOME-2 aerosol product upgrade was successfully completed. The new version of the AAI product from the PMDs is now corrected for the so called end-of-orbit and across-track corrections. Read more... |
| 31 July | Upgrade announcement: the operational processors of the AC SAF at KNMI will be upgraded 13 August at 08:00-12:00 CET. Read more... |
| 12 June | GOME-2 vertical ozone profile quality assessment pages republished after OMPS limb profile update (version 2.5). |
| 19 April | AC SAF Service Specification 1.1 has been published. |
| 18 April | NRT IASI SO2 product has been released. |
| 7 March | AC SAF Operations Report 2/2017 has been published. |
| 23 February | GOME-2 NO2 and H2O level 3 climate data records have been released. |
| 14 December | Risk of degraded product quality between 26 January 2018 and 19 February 2018 due to Metop-A satellite being in drifting orbit. Read more... |
| 28 November | The latest O3M SAF / AC SAF Operations Reports are now available. |
| 15 September | New chlorine dioxide data record has been released. |
| 7 September | AC SAF Service Specification 1.0 has been published. |
| 31 August | The first AC SAF news bulletin (1/2017) is available here. |
| 20 June | The IASI SO2 product is available via EUMETCast as demonstrational product. The official release is expected to happen in autumn 2017. Feedback is highly appreciated. |
| 2 June | New Lambertian-equivalent reflectivity data records have been released. |
| 1 June | NRT and offline coarse resolution ozone profile products are no longer processed, please use high-resolution profile products instead. Existing offline CR products remain available. |
| 27 April | Reprocessed absorbing aerosol index data records (AAI and AAI from PMD's) have been officially released. This data forms a consistent time-series with the operational products being processed on a daily basis. The data with older algorithm versions are available only with a special request. |
| 19 April | New publication in AC SAF context about surface reflectivity climatologies published |
| 13 March | The first AC SAF Metop/IASI products have been released. The near real-time IASI CO products from Metop-A and Metop-B satellites are available in BUFR format via channel EUMETCast Europe on EUTELSAT 10A. |
| 7 March | The coarse resolution ozone profile products NOP and OOP will be discontinued 1 June 2017. After that the only option will be the more accurate high-resolution ozone profile products NHP and OHP. Please, update your systems accordingly. If you have any questions, contact AC SAF Helpdesk: helpdesk@acsaf.org. |
| 1 March | Name of the SAF was changed to Satellite Application Facility on Atmospheric Composition Monitoring (AC SAF). The main website and helpdesk address changed as well. |
| 1 February | GOME-2 vertical column trace gas products reprocessed with GDP 4.8 for the period 23/01/2007 – 16/11/2016 (Metop-A) and 13/12/2012 – 16/11/2016 (Metop-B) available via data record access page. |
| 17 December | Final report "The STRatospheric Estimation Algorithm from Mainz (STREAM): Implementation for GOME-2" of the O3M SAF Visiting Scientist Activity (ID: O3_AVS15_02) published. |
| 27 November | Final report "Evaluation of the possibility to derive reliable OClO slant columns from GOME2b and GOME2a spectra" of the O3M SAF Visiting Scientist Activity (ID: O3_AS14_02) published. |
| 16 November | OPERA software (processing the ozone profile, aerosol and tropospheric ozone products) updated to version 1.35. |
| 8 October | The tropospheric O3 products have been declared operational and are disseminated as part of the O3 profile product files. |
| 14 September | OPERA software (processing the ozone profile and aerosol products) updated to version 1.34 as announced 31 August. |
| 3 September | NRT total column products have been added to product samples. |
| 31 August | KNMI will upgrade their operational software 14 September. The NRT and offline AAI products will start to use less stringent spectral quality control in order to allow retrieval of AAI of significantly more ground pixels. |
| 28 May | OPERA software (processing the ozone profile and aerosol products) updated to version 1.33. |
| 25 May | Version 1.3 of the O3M SAF Service Specification has been published. |
| 20 May | KNMI will upgrade their operational software 28 May. The NRT and offline AAI products will start to use a GOME-2 instrument degradation correction factor. |
| 18 March | New O3M SAF offline surface UV validation report has been published. |
| 15 March | The daily maximum NO2 photolysis rate product j(NO2) was released. It is part of the Offline surface UV product family and available via offline data access page by selecting "Surface UV". |
| 26 February | New ozone validation & quality assessment website (http://lap3.physics.auth.gr/eumetsat/main) published. |
| 23 February | OPERA software (processing the ozone profile and aerosol products) updated to version 1.32. |
| 7 January | Version 1.2 of the O3M SAF Service Specification has been published. |
| 10 November | Online data ordering via EUMETSAT Data Centre will be unavailable between 11 November 09.00 UTC and 13 November 16.00 UTC due to system upgrades. |
| 5 September | New data record, Lambertian equivalent reflectivity, is now available. The data record covers time period 2007-2013 and is available in two versions: data from Main Science Channels (MSC) or from Polarisation Measurement Devices (PMD). |
| 26 May | O3M SAF News Bulletin 1/2014 has been published and sent to the members of the mailing list and to the user community. |
| 19 May | Updated Product User Manual (issue 1.42) and Algorithm Theoretical Basis Document (issue 2.32) for aerosol products published. |
| 8 May | Completely updated O3M SAF web pages published with new features: common user registration and access to FMI and DLR data archives, improved navigation, simplified structure and enhanced appearance. |
| 28 February | Satellite data source for offline surface UV products is switched from Metop-A to Metop-B. The data processing is stopped for three days and it will resume 4 March. |
| 8 January | O3M SAF Metop Atmospheric Chemistry Meeting, which was planned to be arranged on the island of Naxos, Greece in June 2014, has been postponed due to overlapping conference. More information will be available in spring. |
| 7 January | NRT coarse/high resolution ozone profiles from Metop-B data are now available via WMO/GTS in BUFR format. |
| 29 November | Archiving and dissemination of Offline Absorbing Aerosol Index from PMDs' (in HDF5 format) begins. |
| 10 October | New O3M SAF product 'NRT Absorbing Aerosol Index from PMDs' available via EUMETCast in HDF5 format. |
| 2 September | O3M SAF Metop Atmospheric Chemistry Meeting will be arranged on the island of Naxos, Greece in June 2014. |
| 2 September | New ARS/AAI Product User Manual (issue 1.4) available. |
| 14 July | Metop-B/GOME-2 products are available. |
| 14 July | Changes in the measurement configuration of the GOME-2 instruments onboard Metop-A and Metop-B satellites. |
| 13 May | Archiving and dissemination of High-resolution Offline Ozone Profile (O3MOHP) product begins. |
| 13 May | OPERA PGE (NOP/OOP/OHP/ARS processor) software updated to version 1.28. |
| 18 September | Metop-B launched successfully from Baikonur Cosmodrome in Kazakhstan 17 September at 16:28 UTC. |
| 3 September | Cloud-corrected NRT UV index (NUV/CLOUD) product available at DMI website. |
| 31 August | The launch of Metop-B has been re-scheduled for 17 September. |
| 10 August | 19 September confirmed as a new launch date for Metop-B. |
| 7 August | OPERA PGE (NOP/OOP/ARS processor) software updated to version 1.26. |
| 30 May | Launch of Metop-B postponed. |
| 1 March | Continuous Development and Operations Phase (CDOP) 2 started. |
| 30 January | OPERA PGE (NOP/OOP/ARS processor) software updated to version 1.25. |
| 10 January | ARS/AAI Validation Report (issue 1/2012) published. |
| 25 October | GOME-2 level 1B data quality has reached nominal levels, therefore level 1B data dissemination has been resumed at 14:57 UTC. |
| 22 October | Due to a complete payload switch-off of Metop-A, GOME-2 level-1B data dissemination stopped during orbit 25988 at 22:35 UTC. The recovery of all instrument is currently ongoing. However, GOME-2 level-1b data dissemination won't resume until Tuesday morning. |
| 30 September | New O3M SAF paper "A review of the ozone hole from 2008 to 2010 as observed by IASI" published. |
| 13 April | Offline total water vapour product (OTO/H2O) declared operational. |
| 5 April | Dissemination of GOME-2 NRT level 1b data was interrupted with sensing time 10:12 UTC. The problem was fixed successfully and the data dissemination resumed at 18:45 UTC with sensing time 16:38 UTC. The data outage has direct effect on the availability and timeliness of the O3M SAF near real-time products scheduled to be processed during the specified time period. |
| 5 April | NO2/NO2Tropo Validation Report published. |
| 30 March | EUMETSAT Data Centre unavailable due to technical maintenance. The service will be accessible again 31 March at 10:00 UTC. |
| 14 March | ARS/AAI Validation Report (issue 1/2011) published. |
| 10 March | IDL reader for OOP and ARS/AAI products released by KNMI. Link to the reader package is found in the product information pages. |
| 25 January | Data connection to Sodankylä Satellite Data Centre was lost around 12:30 UTC, preventing also product archiving and ordering. The connection was restored 13:40 UTC. |
| 10 January | NTO/OTO Algorithm Theoretical Basis Document (issue 2/D) published. |
| 3 January | OPERA PGE (NOP/OOP/ARS processor) software updated to version 1.24.
Changes: ability to read the latest GOME-2 L1b data (new product format 12.0). |
| 29 October | Unexpected reboot of the FMI archiving server, archiving stoppped. Archiving services restarted 1 November. |
| 13 October | Operator mistake on EUMETCast reception at FMI led to a situation where NTO/O3 files were not storaged to a rolling archive. Subsequently, OUV processing was missing ozone data and produced OUV grids were empty. Ozone data flow from EUMETCast was restored 18 October and the next proper OUV product was sent to FMI archive 22 October. OUV products between 10 and 18 October are to be reprocessed. |
| 16 September | Around 12:30 UTC, power outage in Sodankylä Satellite Center caused the virtual servers (including archiving and ordering servers) to automatically reboot. After that, all file systems were on read-only mode and some I/O functions were disabled. During the evening and the following morning all servers were rebooted once more. All servers were operational 17 September at 06:00 UTC. |
| 1 September | New O3M SAF web pages published. |
| 18-20 August | Product ordering from O3M SAF archive at FMI via WWW not functioning due to archiving server kernel update which broke dbiproxy module needed for remote database access. |
| 9 June | FMI ordering server fully operational again. |
| 2 June | NUV Product User Manual (issue 1.4) published. |
| 20 May | FMI ordering server restarted in virtual environment (VMware), running CentOS 5.5 as client. Recovery of ordering scripts, web pages and re-installation of necessary services and programs begin. |
| 19 May | Severe hard disk failure in FMI ordering server. All ordering from FMI archive via O3M SAF website were stopped. Orders via EUMETSAT Data Centre were not affected. |
| 14 May | NTO/OTO Algorithm Theoretical Basis Document (issue 2/C) updated. |
| 12 May | ARS Product User Manual (issue 1.01) published. |
| 29 April | NOP/OOP Product User Manual (issue 1.0) published. |
| 29 April | ARS/AAI Product User Manual (issue 1.0) published. |
| 29 April | NOP/OOP Algorithm Theoretical Basis Document (issue 1.0) published. |
| 29 April | ARS/AAI Algorithm Theoretical Basis Document (issue 1.0) published. |
| 29 April | OPERA PGE (NOP/OOP/ARS processor) software updated to version 1.23. |
| 29 April | NUV Validation Report (issue 2/2010) published. |
| 26 March | FMI archiving server fully operational again. |
| 15 March | FMI archiving server restarted in virtual environment (VMware), running Red Hat Enterprise Linux ES release 4 as client. Recovery of archived data from backups and re-installation of necessary services and programs begin. |
| 11 March | Severe hard disk failure in FMI archiving server. All archiving and ordering services were stoppped. |
| 8 March | Dissemination of OTO/HCHO and OTO/H2O via EUMETSAT Data Centre and EOWEB begins. |
| 6 March | OTO/HCHO declared operational, OTO/H2O declared pre-operational. |
| 3 March | OPERA PGE (NOP/OOP/ARS processor) software updated to version 1.22 |
| 25 February | OTO/HCHO Validation Report (issue 1/2010) published. |
| 19 February | NTO/OTO Product User Manual (issue 2/C) published and Algorithm Theoretical Basis Document (issue 2/C) updated. |
| 10 February | OTO/H2O Validation Report (issue 1/2010) published. |
| 8 February | DIMS control software updated to version 2.2.3 |
| 30 January | NTO/OTO Algorithm Theoretical Basis Document (issue 2/C) published. |
| 18 December | NTO/OTO Product User Manual (issue 2/B) updated. |
| 9 December | NOP, OOP and ARS/AAI declared operational. |
| 24 November | NTO/OTO/O3 Validation Report (issue 3/2009) published. |
| 19 November | Dissemination of ARS/AAI via O3M SAF web page, EUMETSAT Data Centre and FMI rolling archive begins. |
| 17 November | OTO/BrO Validation Report (issue 2/2009) published. |
| 16 November | NTO/OTO Product User Manual (issue 2/B) published. |
| 2 November | NOP/OOP Validation Report (issue 2/2009) published. |
| 30 October | NTO/OTO Algorithm Theoretical Basis Document (issue 2/B) updated. |
| 21 October | NOP/OOP Product User Manual (issue 0.9) published. |
| 1 September | NOP/OOP Algorithm Theoretical Basis Document (issue 0.8) published. |
| 1 September | ARS/AAI Algorithm Theoretical Basis Document (issue 0.8) published. |
| 25 August | ARS/AAI Validation Report (issue 1b/2009) published. |
| 22 May | OTO/BrO declared operational. |
| 17 June | OTO/BrO dissemination via UMARF and EOWEB begins. |
| 10 June | OUV validation pages published. Pages include information about the latest archived product file, online monitoring of erythemal daily dose (global average, both long-term and 30-day monitoring) and the latest validation report. |
| 10 June | Dissemination of OUV begins. Product is available to users via UMARF, O3M SAF web pages and the rolling archive. |
| 22 May | OUV declared operational. |
| 19 May | Rolling archive service started with OOP products. Each day at 00:00 UTC, all operational and pre-operational products that have been archived to the O3M SAF archive at FMI during the previous day are uploaded to an ftp server to provide easier and faster access to the daily data. Product files are available on the server for one week. |
| 21 April | ARS/AAI declared pre-operational. |
| 19 April | O3M SAF archive at FMI temporarily unavailable. |
| 15 April | OTO/BrO Validation Report (issue 1/2009) published. |
| 15 April | NOP/OOP Validation Report (issue 1/2009) published. |
| 15 April | ARS/AAI Validation Report (issue 1/2009) published. |
| 15 April | ARS/AAI Product User Manual (issue 0.7) published. |
| 15 April | ARS/AAI Algorithm Theoretical Basis Document (issue 0.7) published. |
| 14 April | NTO/OTO Algorithm Theoretical Basis Document (issue 2/B) updated. |
| 3 March | NTO/OTO Algorithm Theoretical Basis Document (issue 2/B) published. |
| 13 February | OUV Validation Report (issue 1/2009) published. |
| 12 February | OUV Product User Manual (version 1.3) published. |
| 11 February | NUV/CLEAR declared operational. |
| 28 January | NTO/OTO Product User Manual (issue 2/A) updated. |
| 28 January | NTO/OTO Algorithm Theoretical Basis Document (issue 2/A) updated. |
| 22 January | NTO/O3, NTO/NO2, NTO/NO2Tropo, OTO/O3, OTO/NO2, OTO/SO2 and OTO/NO2Tropo declared operational. |
| 21 January | O3M SAF archive at FMI temporarily unavailable. |
| 19 January | NUV Validation Report (version 3.1) published. |
| 10 December | OPERA PGE (NOP/OOP/ARS processor) software updated to version 1.16 |
| 9 December | NTO/OTO Product User Manual (issue 2/A) published. |
| 24 November | NTO/OTO/NO2/NO2Tropo Validation Report (revision 1) published. |
| 24 November | NUV Algorithm Theoretical Basis Document (issue 1.3) published. |
| 20 November | NOP/OOP Product User Manual (issue 0.8) published. |
| 12 November | DVD ordering from the O3M SAF archive at FMI operational. |
| 11 November | NTO/OTO/O3 Validation Report (revision 2) published. |
| 4 November | OTO/SO2 Validation Report (issue 1.1) published. |
| 30 September | NUV Product User Manual (issue 1.3) published. |
| 30 September | NOP/OOP Product User Manual (issue 0.7) published. |
| 30 September | ARS/AAI Algorithm Theoretical Basis Document (issue 0.6) published. |
| 30 September | NOP/OOP Algorithm Theoretical Basis Document (issue 0.7) published. |
| 26 September | NTO/OTO/O3 Validation Report (revision 1) published. |
| 26 September | NTO/OTO Algorithm Theoretical Basis Document (issue 1/D) published. |
| 15 September | OUV Algorithm Theoretical Basis Document (issue 1.2) published. |
| 1 September | NOP/OOP Validation Report (using lidars and microwave radiometers) published. |
| 29 August | FMI archiving and ordering servers down 04:00-09:30 UTC due to electrical maintenance. |
| 1 July | NOP/OOP Validation Report (using balloon sondes) published. |
| 24 June | EUMETCast dissemination of NOP (in BUFR format) begins. |
| 26 May | UPAS (NTO/OTO processor) software updated to version 1.2.4 |
| 23 May | NOP/OOP Product User Manual (issue 0.6) published. |
| 23 May | ARS/AAI Algorithm Theoretical Basis Document (issue 0.5) published. |
| 23 May | OPERA PGE (NOP/OOP/ARS processor) software updated to version 1.14 |
| 30 April | NTO/OTO Product User Manual (issue 1/E) published. |
| 23 April | OTO/NO2Tropo and NUV/CLEAR declared pre-operational. |
| 18 April | NOP/OOP Algorithm Theoretical Basis Document (issue 0.6) published. |
| 14 April | NTO/OTO Algorithm Theoretical Basis Document (issue 1/C) published. |
| 4 April | OUV Algorithm Theoretical Basis Document (issue 1.2) published. |
| 3 April | UPAS (NTO/OTO processor) software updated to version 1.2.3 |
| 2 April | First OTO/O3 and OTO/NO2 products available via UMARF. |
| 18 March | EUMETCast dissemination of NOP (in HDF5 format) begins. |
| 12 March | NOP/OOP Product User Manual (issue 0.5) and Algorithm Theoretical Basis Document (issue 0.5) published. |
| 29 February | NOP/OOP declared pre-operational. |
| 29 February | UPAS (NTO/OTO processor) software updated to version 1.2.2 |
| 28 January | OPERA PGE (NOP/OOP/ARS processor) software updated to version 1.13 |