AVISO Climate Change News

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25 January - 17 February Press review

Tue, 2019-02-19 08:16
NOAA announces the arrival of El Nino (NOAA, 14/02/2019) Satellites reveal a new view of Earth’s water from space (The Conversation, 13/02/2019) Eddies Influence Productivity in the Subtropical Open Ocean (EOS, 13/02/2019) Two sea level studies have some good news, bad news (Ars Technica, 02/08/2019) At many river deltas, scientists are missing a major source of sea level rise (Science Mag, 30/01/2019) River levels tracked from space (Science Daily, 29/01/2019) L’origine des vagues scélérates enfin expliquée ? (Actu Nautique, 15/02/2019) Comment le réchauffement planétaire conduit à une dégradation de la qualité de l’air (Science Post, 11/02/2019) Le réchauffement climatique va changer la couleur des océans (Futura Sciences, 10/02/2019) Réchauffement climatique : c’est officiel, 2018 a été la 4e année la plus chaude (Ultimate Pocket, 08/02/2019) Océans : une accumulation alarmante des produits plastiques (Le Journal International, 01/02/2019) Deux courtes animations résument plus de 150 ans de réchauffement climatique (Le Figaro, 28/01/2019) Anny Cazenave: “El aumento del nivel del mar está cambiado la forma de la Tierra” (El Pais, 28/01/2019) On line availability of articles depends on the Newspaper/magazine. We can't thus certify that above articles will be freely and permanently available.
Categories: Climate Science News

[Saral/AltiKa] SARAL/AltiKa satellite encountered since 3rd of February 2019 some issues affecting the nadir pointing accuracy

Tue, 2019-02-19 07:11
ISRO Operational Team in charge of the platform is doing investigations and tests in order to fix the issues and to recover a nominal mission as soon as possible. As a consequence, the availability and quality of products can be degraded from time to time.  Before using the data, Users are warned to remove any ocean data with “off_nadir_angle_wf” over 0.09 deg²; otherwise standard quality flags may be used
Categories: Climate Science News

[Jason-2] Jason-2 is in safe mode since Saturday, February 16th 2019 @14:56:48 UTC

Mon, 2019-02-18 06:22
The satellite is currently in a safe and stable Sun-pointing configuration. The analysis of the telemetry shows that the safe hold mode is the result of a gyro #2 disjunction. Those gyro anomalies are well known. 
Categories: Climate Science News

[Jason-2/Jason-3] MOE calculation takes into account DORIS and GPSP measurements

Thu, 2019-02-14 03:27
No change should be seen in the products, except an improvement of MOE precision. Please note that in case of temporary unavailability of GPSP measurements, the calculation will automatically be performed using the former way of calculations, i.e. only with DORIS measurements.
Categories: Climate Science News

February 2019: Sharks in eddies and meanders

Fri, 2019-02-01 03:08
Using the physical parameters of the environment, in particular from altimetry satellites, coupled...
Categories: Climate Science News

[Sentinel-3B L2P] redelivery of L2P S3B Near Real Time and Short Time Critical

Tue, 2019-01-29 08:43
Please be informed that some global attribute values ("platform", "title", "summary", "source") were not appropriate in the Sentinel-3B L2P NRT and STC files delivered on the Aviso+ ftp server since the 2019/01/24.  The other attributes and variables as well as the scientific values were not affected. As a result, the whole files of the time series have been reprocessed and redistributed today (29/01 after 14h UTC) on the Aviso+ ftp server. We apologize for the inconvenience this has caused.
Categories: Climate Science News

08 - 24 January 2019 Press review

Tue, 2019-01-29 01:07
EU and ESA signs agreement to provide financial resources for Copernicus Programme (Geospatial World, 24/01/2019) Deep data state of the climate: How the world warmed in 2018 (Red Green and Blue, 22/01/2019) How Arctic Cyclones Change the Sea Ice (EOS, 14/01/2019) Climate change makes seas rise faster and faster (Science News for Students, 10/01/2019) Three pioneers in the study of rising sea levels win the Frontiers of Knowledge Award (EurekAlert!, 09/01/2019) How Much Hotter Is Your Hometown Than When You Were Born? (The New York Times) Le réchauffement de l’océan conduit à des vagues de plus en plus puissantes (Science Post, 22/01/2019) Espace : à quoi vont servir cette année les 5,72 milliards d'euros de budget de l'ESA ? (Futura Sciences, 22/01/2019) Russie : Un nouveau satellite pour observer les phénomènes climatiques dans la zone de l'Arctique (Le Matin, 20/01/2019) Copernicus lance une nouvelle base de données pour l'observation du climat mondial (Environnement Magazine, 18/01/2019) The Ocean Cleanup : le système de nettoyage en mer imaginé par Boyan Slat en réparation à Hawaï (La 1ère France TV Info, 16/01/2019) L’océan Pacifique est en train de se refroidir en profondeur (Futura Sciences, 08/01/2019) On line availability of articles depends on the Newspaper/magazine. We can't thus certify that above articles will be freely and permanently available.
Categories: Climate Science News

[Sentinel-3B] New added-value products are available

Thu, 2019-01-24 06:46
We are pleased to inform you that the Along-track Sea Surface Heights Level-2+ (L2P) products are now available for Sentinel-3B. These mono-mission products contain along-track corrected sea surface heights with respect to a mean sea surface, corrections and geophysical parameters. The last versions of altimetric standards are used and there is a homogenized format for all satellites. These new products are processed by the Sentinel-3 L2P/L3 Marine Altimetry Service (CNES/CLS), in the frame of a EUMETSAT contract, part of the COPERNICUS Programme funded by the European Union.  The products are available in Near-Real Time, Short Time Critical and Non Time Critical, and the service is operational.  Dissemination: Sentinel-3B L2P are disseminated by AVISO+ (via ftp or AVISO+ CNES Data Center) and NRT/STC products will also be disseminated in the near future by EUMETSAT via EUMETCast. AVISO+ access: For new users, please see information and registration on the product page. For AVISO+ registered users, 
  • if you are already registered to Along-track Sentinel-3A L2P products, the new mission is available with the same access (just replace s3a by s3b)
  • if not, you need to choose the product "Sea Level Anomalies Along-track Level-2+ (L2P) Sentinel-3” in your private space. 
Categories: Climate Science News

How to use altimetry for hydrology?

Mon, 2019-01-21 00:26
 This document, in pdf, have been written thanks to the help of many people. It explains the details and technical points of altimetry for hydrology. Available now in English and French, soon in Spanish and Portuguese. 
Categories: Climate Science News

Jason-3's third birthday

Fri, 2019-01-18 10:01
After three years in orbit, Jason-3 closes its routine operations phase. But its mission has been extended for at least two more years. This "extended routine operations phase" will thus ensure the continuation of the high-precision sea-level measurement that began more than 25 years ago.  Jason-3 will play a key role in the commissioning of its successor Jason-CS / Sentinel-6A, which is scheduled for launch in November 2020. It will allow the in flight cross-calibration of the instruments .  See CNES's press release to know more about Jason-3's story.
Categories: Climate Science News

Presentation of Swot future data products for hydrology and oceanography

Thu, 2019-01-17 07:30
Information on what the future Swot products will be in terms of content, format, etc.
Categories: Climate Science News

17 December - 07 January 2019 Press review

Fri, 2019-01-11 09:26
How El Nino Impacts Solar and Wind Power Supply (WeatherNation, 07/01/2019) Study finds 2018 was fourth warmest on record: EU's Copernicus (Euronews, 07/01/2019) Scientists Invited to Collaborate in Satellite Mission’s Debut (Eos, 02/01/2019) Vital ecosystems in tidal flats lost to development and rising sea levels (The Guardian, 28/12/2018) Deadly weather: the human cost of 2018's climate disasters – visual guide (The Guardian, 21/12/2018) Interpreting Mosaics of Ocean Biogeochemistry (Eos, 17/12/2018) Sentinel satellites study climate-threatened Camargue (Euronews, 14/12/2018) L’année 2018 est la plus chaude jamais enregistrée en France (Le Monde, 21/12/2019) Pourquoi manque-t-on de plus en plus d'eau alors que les pluies augmentent ? (Futura Planète, 20/12/2018) On line availability of articles depends on the Newspaper/magazine. We can't thus certify that above articles will be freely and permanently available.
Categories: Climate Science News

[Jason-2] has restarted successfully on Monday 7th, January

Fri, 2019-01-11 07:52
Jason-2 is then back to nominal activities at cycle 617, pass 132.
Categories: Climate Science News

January 2019: From La Niña to El Niño, 20 years of Images of the Month on Aviso web site!

Wed, 2019-01-02 04:32
Wandering through 20 years of Images of the Month on this web site.
Categories: Climate Science News

[Jason-2] is in safe hold mode since December 26th at 01:33:54UTC

Thu, 2018-12-27 01:16
The satellite is currently in a safe and stable Sun-pointing configuration. The analysis of the telemetry shows that the safe hold mode is consecutive to a gyro #1 disjunction. 
Those anomalies are well known. Recovery operations will start after Christmas holidays period. Very best regards  Merry Christmas and happy New Year 2019 Nadège Quéruel (SALP on call) on behalf of Christophe Marechal, CNES Jason 2 project manager.
Categories: Climate Science News

[Jason-3] reprocessed POE delivery

Thu, 2018-12-20 10:04
All POE have been reprocessed for Jason-3 in level F. From today (Dec. 20th), they can be retrieved on SEF
Categories: Climate Science News

Jason-3 reprocessed POE delivery

Thu, 2018-12-20 10:04
All POE have been reprocessed for Jason-3 in level F. From today (Dec. 20th), they can be retrieved on SEF
Categories: Climate Science News

1 - 16 December 2018 weeks

Tue, 2018-12-18 06:33
Snow over Antarctica buffered sea level rise during last century (Science Daily, 13/12/2018) Drones help map sea level rise (Phys.org, 12/12/2018) The Arctic Ocean has lost 95 percent of its oldest ice — a startling sign of what’s to come (Washington Post, 11/12/2018) Argo finds ocean stores 90% of the Earth's heat and water is getting saltier (Daily Mail, 10/12/2018) Another El Niño on the horizon? (Esa, 07/12/2018) Ice loss in Greenland is Accelerating (Universe Today, 06/12/2018) Portrait of a planet on the verge of climate catastrophe (The Guardian, 02/12/2018) Climat : la COP24 adopte les règles d’application de l’accord de Paris (Le Monde, 15/12/2018) COP24 : des capteurs bon marché pour surveiller les océans (Sciences & Avenir, 11/12/2018) COP24 : la France fera partie des 20 pays les plus touchés par le changement climatique (Sciences & Avenir, 07/12/2018) Augmentation de la variance des événements El Niño de l’est du Pacifique liée au réchauffement global (INSU, 07/12/2018) Surfaces enneigées records en Amérique du nord (Meteo France, 05/12/2018) La grande barrière de corail de Nouvelle-Calédonie est en danger (France Inter, 04/12/2018) On line availability of articles depends on the Newspaper/magazine. We can't thus certify that above articles will be freely and permanently available.
Categories: Climate Science News

CFOSAT: the end of the Commissioning Phase

Wed, 2018-12-05 01:05
The French-Chinese satellite CFOSAT was successfully launched on October 29th (see our dedicated news). Throughout this last month, the Commissioning Phase took place with initial calibration and validation aimed at assessing the good functionality of the instruments, the final orbit and the first steps of the ground segment: reception and processing of satellite telemetry from the stations network.  The first period of the Commissioning Phase started just after launch with the switch on of the instruments. Only a few days after the launch, the SWIM status was nominal with great results for the first wave products evidencing SWIM perfect behaviour. On the Chinese side, the SCAT scatterometer dedicated to the ocean surface wind measurements was also operational and works properly (see our dedicated news). The operational orbit was quickly reached three days after the launch. Periodic station keeping maneuvers will take place to maintain the orbit close to its reference orbit and nominal tracks. The reception and processing of satellite telemetry data from Chinese and French sides have also been successfully tested and validated. The Commissioning Phase ended with these promising results, the Calibration/Validation phase is starting now where the data are available for scientific experts (represented in France by LATMOS, Ifremer/LOPS and marine forecasters and oceanographers at Météo-France).

Schema of the different development phases from the CFOSAT launch and up to the routine phase in Summer 2019. Credits CNES.

Further information:
  • Missions : CFOSAT
Categories: Climate Science News

December 2018: Retrieving hidden water contribution to river from space

Mon, 2018-12-03 01:53
The minimum flow a river can have can be estimated using the overall discharge. This is one of Swot...
Categories: Climate Science News