OMI DATA PRODUCTS and DATA ACCESS

To all OMI data users: Please be advised that the

Reprocessing Campaign of OMI L2, L2G and L3 products is in progress.

------------------------------------

News Update: April 19, 2012

-Reprocessed OMI Cloud Products OMCLDRR and OMCLDRRG (based on the Rotational Raman Scattering Algorithm), Ozone Products OMTO3, OMTO3G, OMTO3d (based on TOMS-Like Algorithm), SO2 Products OMSO2, OMSO2G, OMSO2e and Near-UV Aerosol products OMAERUV, OMAERUVG, are now available from GES DISC.

-------------------------------------

- Recently, the reprocessed OMI Cloud Products [OMCLDO2 (level-2), OMCLDO2Z(level-2 zoom) and OMCLDO2G (level-2G)], Ozone Products [OMDOAO3(level-2), OMDOAO3Z(level-2 zoom), OMDOAO3G (leve2G), and OMDOAO3e (level-3)], and Aerosol Products OMAERO(level-2), OMAEROZ(level-2 zoom), OMAEROG (leve2G), and OMAEROe (level-3)], all based on the KNMI Algorithms, have been released.

---------------------------------------

 -Other Reprocessed OMI products including  NO2 &  UVB products will be made available soon.

                                                                             more info on OMI Processing

Next Aura and OMI Meetings will be held in Pasadena, California.   Aura :Oct 1-3      OMI: Oct 4-5, 2012

Previous OMI meeting was held at FMI in Helsinki, Finland, Sept 12, 2011, the day before the Aura Science Team Meeting.
(see Agenda & Presentations of Aura Meeting).

README files

Users are advised to read data quality and data validation documents available for each OMI data productfrom the GES DISC sites. Brief details of  the OMI instrument and pixel sizes are available in the OMI Data User's Guide.

Important Information for OMI Data Users 

Row Anomalies

Several row anomalies have occurred in the recent past. These anomalies affect the quality of the Level 1B and Level 2 data products. Please read this information carefully prior to using OMI data. Please respect the dates mentioned as the anomalies have occurred recently.

• Anomaly 1: Since June 25th, 2007, cross-track scenes 53-54 (0-based).
• Anomaly 2: Since May 11th, 2008, cross-track scenes 37-44 (0-based)
• Anomaly 3: Since January 24th, 2009, cross-track scenes 27-44 (0-based).
• Anomaly 4: Since July 5th, 2011, cross-track scenes 42-45 (0-based)
• Anomaly 5: Since Aug, 2011, cross-track scenes 41-45 (0-based) 
•  Most Current Status           
  

  KNMI have set up a row anomaly RSS feed where  updates to anomaly  flagging are posted. You can subscribe to the row anomaly feed via the link. An archive of the messages is here.

Row Anomaly Behavior

Since “anomaly 3” the row anomaly exhibits a more dynamic behavior than before. Which rows are affected and to what extent varies with time. Please visit the “Overview” section of our detailed technical information page for the most up to date information and details.

Row Anomaly Corrections

The anomalies are known to the OMI team and are currently under investigation to examine whether corrections for the effects can be implemented in the Level 1b data. Please visit this information page regularly for updates on the status of corrections implemented and visit our detailed technical information page.

Row Anomaly Flagging

The Level 1B data are partially flagged for the anomalies listed above. We expect to provide appropriate flagging for the anomalies in the near future. Please visit our detailed technical information page for details on the current flagging status of the Level 1B and Level 2 products.

Recommendations To Users

At the moment no corrections have been implemented in the operational Level 1B and Level 2 data. It is recommended not to use the affected cross-track scenes. Please respect the dates mentioned above. All other OMI data, meaning other cross track scenes and earlier observations, is of optimal quality. Level-3 products are being produced after filtering for the cross track scenes mentioned per anomaly.