September 9, 2016

Events Archive

2016 events

09/07/2016: Update of the description of products with some corrections of issues.

08/2016: Mission extented for 4-year

As agreed at the first extension of the mission we have had this year a review to examine the hypothesis of an extension of the mission. Thanks to a renewed and ambitious scientific program and a perfect health of the platform but also the good performances of the instruments with no drift in 5 years. CNES has extended for 4-year the operation of the mission.

2015 Events

12/04/2015: A successful review has been held jointly by CNES and ISRO at same time in Toulouse, Bangalore and Ahmedabad. The exploitation of last year and the preparation for the next one was reviewed.

11/2015: Due to recent event in Paris (November 13) the conference have been postpone

10/20/2015: ISRO and CNES decided to open the access to level 1 MADRAS data from launch to January 26th 2013

Read the official communiqué  signed by the two agencies.

11/17-11/19/2015: International Conference on the Water and Energy cycles in the Tropics

The aim of the conference is to provide a forum to review and discuss the latest research on the topic of the water and energy cycles with emphasis on tropical regions. The tropical energy cycles are central to the climate, its variability and its future evolution as reflected in the WCRP Grand Challenges being led by both the GEWEX program and the WGCM. The dynamical nature of the tropical water cycle and the control on the energy balance on both the tropical atmospheric dynamics and water cycle is one of the main incentives of the conference. Sessions covering the various aspects of this complex coupled problem are anticipated, including topics on the large scale Hadley/Walker circulation, the ITCZ, ENSO, monsoons, MJO, tropical convection, extreme rain events and droughts, and water and energy budget studies associated with these phenomena. The conference will bring together theoretical, observing (in-situ and from satellites) and modelling perspectives as well as address the evolution of the tropical phenomena under climate change.

The conference is to be organized by CNES, CNRS with the sponsorship of GEWEX and will be held from 17 to 19 November 2015 in the "Maison des Océans", in the heart of Paris, France.

For more information about the Conference...

04/13/2015: Météo-France operationally assimilates NRT SAPHIR data in ARPEGE and ALADIN models

To access the monitoring made by Météo-France:

You need to click on "ATOVS" in the "Satellite observations" list on the left of the page, then select MEGHA-TROPIQUES and AMSU-B/MHS/SAPHIR in the forms.

01/2015: SAPHIR and SCARAB data are available in V7000.

01/15/2015: Update of the description of the changes in the products.

2014 Events

10/12/2014: Celebration of the 3 years of Megha-Tropiques nominal mission. The engagement for the nominal mission has been met. The satellite as well as SAPHIR and SCARAB instruments are in perfect health, the mission continue.

10/10/2014: End of the reprocessing of all the archive in V7000.

05/27/2014: SAPHIR NRT data are now distributed by EUMETCast to the weather forecast agencies.

05/23/2014: Mission Extension Formal Review.

An extension by at least two years was decided on May 23, 2014. A new formal review will examine the mission by the end of 2016 to decide of an eventual new extension.

2013 Events

09/24/2013: The MADRAS instrument declared non-operational

After several months of investigations, ISRO and CNES declared the MADRAS instrument non-operational due to an anomaly on the scan mechanism.

The instrument doesn't produce valid data since January 26, 2013 (read the official communiqué).

05/23-05/24/2013: An XCAL Meeting took place in Toulouse

01/11/2013: The access to SAPHIR and SCARAB data level 1A and 1A2 is now open to all users

ISRO and CNES decided to open the access to SAPHIR and SCARAL level 1A and 1A2 data to all users (see the official communiqué).

The data of these 2 instruments, acquired since the launch, have been reprocessed and are available at ICARE center for France and at MOSDAC center for India.

The products are available as "orbit-wise" and "segment-wise".

The data provided in routine operation are in an upper version to the one that have been reprocessed. The main modifications are the change in the nomenclature of the files for SAPHIR and SCARAB, as well as the taking into account of the geometrical correction for SAPHIR. This correction has been determined from calibration studies of the instrument.

The first level 1A and 1A2 data of MADRAS instrument will be disseminated in a routine manner in February. According to the cooperation aggreement signed by CNES and ISRO, these first MADRAS data will be restricted for a few months to French and Indian science teams and the International Announcement of Opportunity Principal Investigators (IAO-PIs).

The users are informed that the current products are not final and that their calibration (radiometrical as well as geometrical) is provisional.

2012 Events

12/10/2012: Announcement to users: MADRAS STATUS and data dissemination

After a few months of in orbit operation, due to a suspected electrical interference, the MADRAS instrument data are affected by random channel mixing. It is found that intrinsic data of the 9 channels are generally not affected but located at different positions in the transmitted data stream.

A methodology has been worked out by the CNES and ISRO Project teams for realignment of the data. With this additional processing, a significant amount of data is recoverable. Not recoverable data will be tagged as filled values.

Soon the data, would be processed and would be made available to users.

11/05/2012: Availability of MADRAS, SAPHIR and SCARAB instruments science data

Level 1A and 1A2 data from SAPHIR and SCARAB instruments are transmitted in continuous manner since September 12, 2012 to the ICARE Data Management and Processing Center located in Lille from the Indian mission center ISSDC.

The most part of the level 1A and 1A2 data from MADRAS instrument acquired between October and December 2011 are available to the users since November 5, 2012.

Level 1A and 1A2 data from SAPHIR and SCARAB instruments acquired between October 2011 and September 2012 will be reprocessed and gradually made available to the users from November 5, 2012.

According to the cooperation agreement signed between CNES and ISRO, for a few months, these first data is restricted for the French and Indian mission teams as well as the scientists selected through the MEGHA-TROPIQUES international Announcement of Opportunity. The users are informed that the current products are not final and that their calibration (radiometrical as well as geometrical) is provisional.

07/2012: The SAPHIR level 1A dump wise products are transmitted in continuous manner (see annexe) since July 6th to ICARE Data and Service Center located in Lille from the indian mission center ISSDC. The processing softwares have been validated by CNES and ISRO before to be implemented at the indian mission centre

According to the agreements signed by CNES and ISRO, during 6 months, these first data is restricted to the French and Indian mission teams as well as to scientists selected through the MEGHA-TROPIQUES International Announcement of Opportunity.

During this 6 months period, CNES, ISRO and the scientific community will continue their calibration and validation work.
So far the products are provisional and the calibration (radiometric and geometric) is only tentative.

For information about the data access: contact the ICARE Data and Services Center, contact email contact at

For information about the level 1 products: either consult the L1 products specifications on this web site, or contact CNES

2011 Events

12/2011: Cyclone Thane seen by SAPHIR and MADRAS instruments

12/2011: SCARAB images after geometry correction

11/2011: MADRAS and SAPHIR images after geometry correction

10/12/2011: Successful launch!

10/12/2011: Launch of the French-Indian satellite from Sriharikota base, in India. More...

Lancement de Megha-Tropiques le 12 octobre par CNES