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ASAR Unavailability

21 May 2003

The ENVISAT ASAR instrument is currently unavailable until further notice following an on-board anomaly on 12-May-03 00:00. An investigation team (ESA-industry) is working on the anomaly with the objective to resume the instrument operations as soon as possible. Check this page for updates as to when ASAR operations will resume.

Confirmation of Envisat mission interruption between 18 May and 21 May

09 May 2003

The payload interruption is confirmed to take place between 18 May and 21 May. All instruments will be switched down on 18 May (4:45 UTC). After an out-of-plane manoeuvre and on-board software changes, the instruments will be gradually switched on starting on 20 May. The mission will be fully operational on 21 May. The operational use of Artemis relay is now planned for end June.

Envisat Summer School

08 April 2003

The Envisat Summer School is a high level teaching activity where lecturers of international standing will treat the subject of Data Assimilation in depth. Students will be introduced to the theoretical basics of atmospheric satellite data analysis, how satellite observations are made, together with the basics of meteorology and numerical models.

MERIS User Workshop (Frascati, Italy).

08 April 2003

The MERIS Users Workshop will take place during the week of 10th November (exact days to be confimed) and will give the principal investigators the opportunity to present results from their on-going AO research projects using primarily MERIS data and to discuss the state-of-the art in their respective Earth science disciplines. Specifically, the workshop will focus on the results of the 2003 MERIS data analysis, intercomparison with other optical instrument data, and user issues.

Product Availability

14 March 2003

Full details of the Envisat product availability are now available including information on product quality.

No Envisat data acquisition during Leonid Meteor storm

11 November 2002

The Envisat payload will be switched off approximatelly from orbit 3752 (18/11/2002 04:33) until orbit 3789 (20/11/2002 18:35), as part of the preventive measures taken to minimize the risk of collition during the Leonids Meteor Shower. As the timining of the meteor shower peaks may change, the period of unavailability may be slightly modified accordingly.

ENVISAT Calibration Review

21 September 2002

From the 9th to 13th of September 2002 the European Space Agency (ESA) organised a meeting at ESTEC to review the calibration results of the instruments on board its environmental satellite Envisat. The presentations made during the Envisat Calibration Review are available. You can access the presentations and proceedings.


01 August 2002

Envisat Validation Campaign takes off.

Orbit reached

06 July 2002

The satellite reached its final orbit on 3rd April and is since then positioned on its assigned 35 days repeat cycle, 30 minutes ahead of ERS-2; both satellite being controlled to overfly the same ground track, within ý1 Km. Following the successful completion of the satellite and instrument activation, the SODAP Review (Switch On and Data Acquisition Phase) was held 17 April at ESOC, Darmstadt, Germany. All instruments were fully activated by mid April, except SCIAMACHY for which, the Elevation Scanning Mirror cover was opened by mid June.

The calibration activities have been initiated right after the instrument activations, with round orbit data recorded on board and dumped over the PDS Kiruna (Sweden) station as well as real time ASAR and MERIS data received at the Matera (Italy) station. This scenario permits to recover the full global mission data.

All instrument modes have been tried out and very stable performances have been observed with all of them. Most of the instrument processors, installed in the Payload Data Segment, have been already updated to reflect the specific characteristics observed early on in orbit and to prepare for the product release, which will follow the calibration review.

ASAR Antenna deployed

04 March 2002

ASAR Antenna deployed

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