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2009-09-25. Level 1 data re-processing is on-goingThe next round of Level 1 data reprocesisng in currently ongoing. The new round of processing has made significant improvements to the dark current internal scatter and absolute calibration. We anticipate that this round of Level 1 reprocesisng will be finished by October 10, 2009. The new version will require users to update their software.2009-03-10. New Data products available, BrO and OHThe OSIRIS team have two new products available for registered OSIRIS data users. Chris McLinden has generated daily profiles of BrO. The BrO profiles are zonally averaged and binned into 10 degree latitude bins. Well done Chris! Dick Gattinger and Ted Llewellyn have produced a database of the OH 308 nm volume emission rate from both the solar resonance and prompt components. The OH profiles extend from 60 km to 100 km in 1 Km increments. Well done Dick and Ted. The OSIRIS data are distributed using ESA guidelines. Interested users should register with ESA using the links on the left.2008-09-16. International Ozone DayThe United Nations General Assembly proclaimed 16 September as the International Day for the Preservation of the Ozone Layer, commemorating the date, in 1987, on which the Montreal Protocol on Substances that Deplete the Ozone Layer was signed. For more information go to Ozone Day.Two of the four CSA atmospheric science missions currently in space ( Odin-OSIRIS and SCISAT) focus on the science describing ozone balance over the Arctic. Ozone balance, which we are far from being able to describe and predict, is critical for the existence of life on this planet particularly over the Arctic and Antarctic where anthropogenic forcing still remains a mystery. The CSA's investment spread over more than 10 years on these two missions has resulted in significant advancements in our knowledge about ozone and the associated chemistry and dynamics. The investment still continues to work producing leading edge measurements which are of critical importance for Canada and its North. 2007-09-18. Adding Support for ESA Third Party Mission statusThe Odin mission is now a third party mission supported by ESA. We are implementing changes to the web site to properly reflect ESA's important contribution to this mission.2007-09-13. BEAT support for Odin-OSIRISThe ESA software package BEAT (Basic Envisat Atmospheric Toolbox) now provides support of Odin-OSIRIS level 2 Daily Data Products.2007-06-22. Level 2 and Level 1 installations combinedThe Level 2 and Level 1 installations are now combined in one package. I have added support for IDL 6.4 as well as earlier versions.2007-02-22. fix to TDT error in Level 1 servicesI have fixed the occurence of an error in converting UTC to TDT in the OSIRIS Level 1 services. The new version of L1 services, v1.15 dated 2007-02-22, is good until 2050.2007-01-02. Reprocessing of 2006 OSIRIS data products completedWe have now completed reprocessing of data products for 2006.2006-11-14. Error in 2006 OSIRIS data products. Reprocessing is ongoingIt has recently come to our attention that there was an error in the 2006 ECMWF database stored at the OSIRIS data processing center. Consequently you should not use any results for measurements collected during 2006 that you have previously downloaded. We are reprocessing all data products for 2006 and expect corrected versions to be available in 3-4 weeks (~December 16). Sorry!2006-11-01. 5 Year animations of Level 2 Daily Data products.We now have 5 year animations of the OSIRIS Level 2 data products, O3, NO2 and aerosols for your enjoyments. Click on "Animations" in the "Level 2" section to the left of this column.
2006-05-04 Level 2 Daily Data products availableWe now distribute Odin/Osiris data products as "Daily" files of HDFEOS-5 Swaths.2006-05-04 Level 2 Reprocessing is on-goingThe Saskatoon processing facility is about one third of the way through reprocessing of the Odin/Osiris Level 2 data products. We have 17 machines dedicated to the task 24/7. We expect the entire mission will be reprocessed by July/August of 2006.2006-01-31 An even better "New" absolute calibration from VegaWe have finished re-evaluating the Vega data and have produced a new absolute calibration. You can look at the new calibration. Click on "Calibration Reports" in the left hand column, under the "Level 1 Services" section, and follow the links.2006-01-10 New absolute calibration from VegaDEPRECATED. There is a new absolute calibration for the spectrograph based upon the Vega observations. All of the Level 1 data will be reprocessed and all of the Level 2 data will be reprocessed (albeit slowly) You can look at the new calibration. Click on "Calibration Reports" in the left hand column, under the "Level 1 Services" section, and follow the links.2005-11-18 Registration required to access OSIRIS Level 2 databaseWe have implemented a policy requiring users to register their name, email address and affiliation before giving them access to the OSIRIS level 2 database. This lets us both manage and measure who uses the data products and ensures that we still have communication between ourselves and our data users. Appropriate links for registration can be found above and to the left of this text.2005-01-14 Version 1.08 ReleasedVersion 1.08 of the OSIRIS level 1 services has been released. This release has been issued to support for the upgraded attitude files. People wishing to access the OSIRIS attitude solution after 2005-01-01 must upgrade their software. Versions for both Linux and Windows have been developed and are available from the links on the left.2004-11-16 Ozone Version 2.4 and NO2The OSIRIS Data Handling System in Saskatoon has started reprocessing the ozone data using version 2.4 of the Chappuis triplet algorithm. All data collected since July 14 2004 will be reprocessed immediately. Data prior to this period will wait for attitude upgrades from Swedish Space Corporation before reprocessing. In addition we have started production of the NO2 data product based upon the DOAS retrieval technique. The Chappuis triplet algorithm has been provided by York University while the NO2 DOAS algorithm has been provided by Chalmers University of Technology. We have 8 machines dedicated to the full-time analysis of the data and also employ development machines in off-peak periods. We expect it will be several months (6-12) before the entire backlog is cleared.2004-07-21 IR Level 2 Data products availableThe OSIRIS IR Level 2 data products are now available and summary plots are available from this web site. The IR Level 2 product is the OH 1.5 micron and O2 1.26 micron Volume Emission Rates (VER) derived from the tomographic inversion of the line of sight brightnesses. Enjoy!. An example summary plot is given below. Please note that a new version of the Osiris Level 1 services (V1.07) has been created to support reading and writing the IR Level 2 VER. The Windows update are available for immediate download while the Linux versions are still under development.
User names for web accesPlease use username odin and password hugin for access to this web site. The new version of Internet Explorer no longer allows username encoding in to the link. The odin account on OSIRUS is a LOW security account similar to normal anonymous ftp accounts.OSIRIS Chappuis Ozone data availableThe OSIRIS Ozone data product from the standard Level 2 processing have been released. There are various links on this website to the data. You can also browse the data using our Ozone orbital summary plots following the links to left of this text. The summary plots also provide a convenient link to download the text or HDF-EOS file of ozone data associated with a given orbit. An example summary plot is given below.
2003-12-19 OSIRIS loses telemetry. Stage 1 testing appears successfulOSIRIS stopped sending telemetry at 2003-12-19 00:09:47 UTC. The incident is similar to the loss of power event on 2003-10-07. SSC operations have since powered OSIRIS off and started stage 1 testing. Preliminary signs indicate that OSIRIS has passed this stage and we are now moving towards stage 2 testing. We anticipate that OSIRIS will resume normal science operations at the next scheduling opportunity on 2003-12-21.2003-10-23 OSIRIS passes 3 stages of testingOSIRIS has successfully rebooted since its anomalous loss of power. It has passed 3 stages of testing and will resume normal science operations on October 28, 2003. No evidence of permanent damage due to the anomalous loss of power has been detected. Possible ideas regarding the loss of power are a) Singe Event Latchup causing the system to automatically shutdown or b) partially failed I.C. or capacitor.2003-10-17 OSIRIS suffers an anomalous loss of power.OSIRIS suffered an abrupt, anomalous loss of power at 2003-10-17 02:40:54 UTC. The cause of the power loss is currently being investigated by the OSIRIS and SSC personnel. Preliminary reports from SSC and OSIRIS operations are available. OSIRIS will remain powered off for the next few days while the event is diagnosed.2003-10-10 OSIRIS Helps Unravel A Mysterious Red Sky PhenomenonDarkness usually prevails in Spitsbergen during December. However on 6'th December 2002, the night was turned to day as an eerie red glow filled the sky. This was not red aurora but scattered sunlight even though the sun was 14 degrees below the horizon. Early ideas postulated a high altitude, greater than 100 km, scattering layer directly illuminated by the sun. OSIRIS measurements, with their unique, siedways on observing geometry clearly reveal that the scattering layer is in the stratosphere. Now ideas are turning to multiple scattering mechanisms involving Polar Stratospheric Clouds. Find out more from Fred Sigernes  2003-07-29 Ozone Climatology from OSIRISWe've processed all of the O3 height profiles from the standard OSIRIS Level 2 from 2001-11-05 to 2003-07-10 and plotted the zonally averaged ozone density on a number of height levels. Three levels are shown below. O3 climatology at 16km
O3 climatology at 26 KM
O3 climatology at 32 KM
2003-07-28 O2 Aband inversionChris Sioris has produced a preliminary inversion of the O2 a band2003-07-17 Version 1.06 Patch for gcc 3.2, SGI endian bug fix in IDL/C++ codeVersion 1.06 of the level 1 services has been patched so it fixes a intptr_t issue in the build process. A bug has been identified in the code that copies the OS_L1 structure from IDL intothe C++ Level 1 services. The bug impacts big endian machines when executing Osiris Level 1 Service functions like CDBGEN_OS_WAVELENGTH. 2003-06-27 Version 1.06 ReleasedThe Windows and Linux/Unix Level 1 source code has been updated to work with recent versions of compilers. The Windows code cleanly compiles under Visual Studio.NET with 64-bit checking enabled while the Linux code compiles cleanly with GNU gcc 3.3 (after quite a bit of effort). Support for GNU gcc 2.95.xx is now deprecated but it will probably work. GNU compilers before version 2.95.2 probably will not work. In addition we have fixed a bug in the Level 1 GetScanInfo function so it no longer produces an access violation when obtaining scan info for orbits with no Level 1 attitude file. 2003-March-03 Version 1.05 ReleasedThe Windows and Linux/Unix Level 1 source codes have been brought back into alignment. The code has fixed a couple of bugs: 1) The tangent altitude bug reported in November 2002 and 2) a small bug found by Doug in the conversion from ECI to orbital plane coords. The nxlib library source code has undergone several changes which address namespace conflicts. The Linux code has compiled cleanly under gcc/g++ version 2.95.2, which is an admittedly older version of the compiler. Good Luck. Downloads can be retrieved by following the links to the left. 2001-October-18 The Ozone holeLatest results from Christian Sauvigny and Chris Sioris: York University. We've eagerly processed the most recent data that cover the southern hemisphere in order to see whether we can observe the antarctic ozone hole. The highest southern latitude we got so far was 72 degrees, but a lot more data will be coming in the following days. The first graph shows an ozone cross section as a function of altitude and latitude. At the highest southern latitudes the ozone hole appears. Interesting is the region with enhanced ozone densities at about -60 degrees latitude and 16 km altitude, which is known as the 'collar'. Ozone is accumulated there because further southward movement is prevented by the stable polar vortex. 
Also shown is a comparison of the total ozone column with TOMS data, and apparently we overestimate the total ozone column at low latitudes, something we noted before. The reason is still unknown, but most likely it is caused by the large SZA (greater than 87 degrees) that make the retrieval more difficult. The second graph shows ozone profiles for different southern latitudes, and within the hole the minumum values are assumed where usually the maximum occurs, in agreement with other observations and simulations. This is all preliminary, but it indicates that we can observe the hole. 
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