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NRT Notification Detail
| Outage of GRAS level 1b data, degraded data
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DATE: 2010-09-06 08:48
TYPE: NRT-GTS
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| Description
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| Dear GRAS SAF GTS user

Issued 2010-09-06 08:45 UTC

Due to missing upstream GRAS level 1b data no GRAS SAF products
where disseminated between instrument sensing times '2010-09-04 19:08:30 UTC'
and '2010-09-04 20:11:42 UTC'. GRAS SAF Products disseminated between 
sensing times '2010-09-04 17:30 UTC' and '2010-09-04 21:45' are based on
degraded input data and have been flagged accordingly. 

Please see detailed message from Eumetsat below.

Kind regards
The GRAS SAF Team

Forwarded message:
Subject: Data outage and degraded GRAS data quality on 04 Sep 2010 16:45 - 21:45 UTC
Date: 2010-09-04 23:43 UTC
From: Christian Marquardt

Dear all,

due to some problem in the Metop Ground Segment, all science data from Metop 
could not be processed on the operational processing chain. GRAS level 1 data 
products in particular stopped to be available shortly after 16:45 UTC.

Data processing resumed for measurements taken after 17:30, but the GRAS 
POD process went through it's usual reset, causing degraded GRAS level1
data quality. For measurements taken between 17:30 and 21:45 UTC, data 
products have therefore been flagged as containing degraded bending angle 
data.

For measurements taken after 21:45 UTC, we managed to re-initialize the
GRAS POD with a converged state vector; data quality should be nominal 
again from this point in time on.

We apologize for the interruption of our service!

With kind regards,

 Christian.

--
Dr. Christian Marquardt, Polar System Product Expert
EUMETSAT, Am Kavalleriesand 31, D-64295 Darmstadt, Germany



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