Details of Outage

NRL has been able to assess the magnitude of the RADCAL interference
on F15 SSMI. The F-15 orbit plane is precessing westward which has resulted
in the coincidence with F13. Their study showed that the large increase in
interference from 2/4 to 2/11. They confirmed that there is significant
orbital variations of the RADCAL interference with maximum approaching 5K.
Also, the orbital variability creates a very difficult problem to address
since it requires a correction scheme that depends on orbital position of
the S/C. Therefore, the F-15 SSMI 22V channel and associated EDRs are
unusable until a new correction algorithm is developed and/or the sensor
stabilizes.

At this moment, FNMOC is still leaving the data ingest on inside of
the FNMOC since their NWP data assimilation model has a good QC program at
the front end rejecting the bad obs. We would like to know if our SSM/I
operational users still need the data feed. If so, please send an email to
Vincent.Tabor@noaa.gov stating your requirement.  Also, please be
advised of the increasing level of interference and the degraded quality of the 22v
SDRs and associated EDRs.

FNMOC will continue to monitor the RADCAL interference and report
major changes. This information will be passes on to our users.  Please let
us know, if you have any questions.

Data Affected by the Outage:
SSM/I data  F-15 EDRs, TDRs and SDRs and products produced from this data

Date and Time of the Outage: 2/26/2009, 1730 UTC
Length of the Outage: Until further notice
Contact Point for Questions: ESPC Operations  OCL  (Operations Crew Leader),  301-817-3880

*Update:*

The GOES-12 navigation has been corrected as of the 20:15Z image.

***Details of the Outage:*

At 22:40Z on Jan 27, 2009, GOES-12 had a re-occurrence of a thruster
leak which caused a Yaw momentum build up.  This caused the navigation
to be off by approximately 20 scan lines.  As of 17:15Z the navigation
is still off and engineers are working on the problem.  It should be
fixed within a couple of hours.

*Data Affected by the Outage:

*GOES-12 * *

*Date and Time of the Outage:

*01/27/2009 2240 UTC, 6:40 PM, EST

*Length of the Outage:

*Until further notice* *

*Contact Point for Questions:

ESPC Operations  OCL  (Operations Crew Leader),  301-817-3880 *

The data provide for DMSP data in NetCDF format, NCDC, has stopped providing the data until they have a chance to clean up the data sets.

4/2008  Posted message on the Home page.  Removed from the message from the home page 1/20/2009.
New DMSP Data: NOAA's National Climatic Data Center is now transferring DMSP SSMI-SSMIS TDR and SDR data in NetCDF format to CLASS along with embedded quality flags to identify climatology anomalies and errors in geolocation, temperature and time values. Also, the period of record is now extended back to August 1993. The date range for the currently available DMSP SSMI TDR data is from 19 August, 1994 through April 1999, and from December 2002 through June 2008. CLASS continues to offer the native format SSMI TDR and SDR, which started in February 1997.

Current message on the home page 1/21/09:

DMSP TDR and SDR NetCDF data: is currently available from 19 August, 1994 through 30 April,1999 and from 21 June, 2001 through 22 July, 2008. The native format, which starts in February 1997, is still offered.