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Geophysical data: GDR, IGDR, OGDR

Contents: along-track altimetric measurements over 1 seconde (+ 20 Hz sampling data only for the OSTM / Jason-2 misison), including significant wave height and wind speed modulus in delayed time or real time (OGDR, OSDR)

Use: marine meteorology, ocean-atmosphere gas tranfer studies

Description : Monomission product

Geographic coverage Global

Tools:

Wind / Wave (delayed time)

Dissemination

 -  The ftp/sftp dissemination of all the Geophysical Data Records products is made on the authenticated AVISO+ ftp portal  (ftp://ftp-access.aviso.altimetry.fr/) where the whole historical data are available. The Thredds Data Server dissemination is made on the TDS portal (https://tds.aviso.altimetry.fr/thredds/catalog.html). Registration: we invite you to fill the form on the AVISO+ web portal to get your credentials as soon as possible, if you are already registered but you haven't these products in your list, we invite you to ask for a new product. You can consult our FAQ for any information.


GDR (delayed-time): Nadir altimeter Geophysical Data Record

Satellite Distribution media Frequency Delivery delay Data period Data used File weight
Swot Nadir
L2_NATL_GDR
(late 2023)
Available via your personal space: MY AVISO+, select the product "GDR / IGDR (Geophysical Data Records)" in the page "My products"
(dedicated credentials are necessary, please fill the form on the registration form)
every 10 days ~90 days - One pass per file <50 MB per file
Jason-3

The Archive is distributed via the catalogue Aviso+ Cnes Data Center (dedicated credentials are necessary, please register online)
and
Available via your personal space: MY AVISO+, select the product "GDR / IGDR (Geophysical Data Records)" in the page "My products"
(dedicated credentials are necessary, different from the AVISO+ Cnes data center, please fill the form on the registration form)

every 10 days 2 months Feb.2016-ongoing 4 MB
Saral every 35 days 2 months Mar 2013-ongoing 5.5 MB 
Jason-2 - 2 months Jun 2008 - oct 2019 5 MB
Jason-1 - - Jan 2002 - Jun 2013 1.3 MB 
T/P - - Oct 1992 - Oct 2005 6 MB
Envisat please contact EOHelp (ESA) - - Apr 2003 - Oct 2010 - -

See also Wind / Wave products available on the Catalogue

IGDR (near-real time): Nadir altimeter Interim Geophysical data record

Satellite Distribution media Frequency Delivery delay Data period Data used File weight 
Swot Nadir
L2_NALT_IGDR
Available via your personal space: MY AVISO+, select the product "GDR / IGDR (Geophysical Data Records)" in the page "My products"
(dedicated credentials are necessary, please fill the form on the registration form)
every day 1 to 2 days 2023/06/21 - ongoing One pass per file <50 MB per pass file
Saral The Archive is distributed via the catalogue Aviso+ Cnes Data Center (dedicated credentials are necessary, please register online)
and
Available via your personal space: MY AVISO+ and select the product "GDR / IGDR (Geophysical Data Records)" in the page "My products"
(dedicated credentials are necessary, different from the AVISO+ Cnes data center, please fill the form on the registration form)
every day 1 to 2 days last month online One pass per file 6 MB per pass file (zipped)
Jason-3 every day 1 to 2 days last month online One pass per file 3 MB per pass file
(zipped)

See also IGDR products available on the catalogue (through menu DATA)

OGDR (real time): Nadir altimeter Operational Geophysical data record

Satellite Distribution media Frequency Delivery delay Data period Data used File weight
Swot Nadir
L2_NALT_OGDR
Available via your personal space: MY AVISO+, select the product "GDR / IGDR (Geophysical Data Records)" in the page "My products"
(dedicated credentials are necessary, please fill the form on the registration form)
 several times per day 3 to 5 hours per day 2023/06/21 - ongoing One pass per file <25 MB per file
Saral several times per day 3 to 5 hours per day last month online One pass per file 10-11 MB per file (zipped)


Note: the official dissemination of SARAL OGDR products is under the responsibilty of EUMETSAT and ISRO. CNES declines any responsability in case of products latency or gaps happening on the ftp server.

 

SGDR (Delayed Time): Nadir altimeter Sensor Geophysical Data Record

Satellite Distribution media Frequency Delivery delay Data period Data delivery File weight
 
Swot Nadir
L2_NATL_GDR
(late 2023)
Available via your personal space: MY AVISO+, select the product "Waveforms" in the page "My products"
(dedicated credentials are necessary, please fill the form on the registration form)
2 months ~90 days - one pass per file  -
Jason-3

FTP, please refer to your dedicated
MY AVISO+

60 days 60 days Feb 2016-ongoing 18 MB
Saral Mar 2013-ongoing 19 MB
Jason-2 Jul 2008-ongoing 15 MB
Jason-1 - - Jan 2002-Jun 2013 13 MB
Envisat Please contact EOHelp (ESA) - -  - -
T/P on request via catalogue - - Poseidon cycles -

See also Sensor Geophysical products available on the catalogue (through menu DATA)

SIGDR (Near-real-time): Nadir altimeter Sensor Interim Geophysical Data Record

Satellite Distribution media Frequency Delivery delay Data period Data delivery File weight 
Swot Nadir
L2_NALT_IGDR
Available via your personal space: MY AVISO+, select the product "Waveforms" in the page "My products"
(dedicated credentials are necessary, please fill the form on the registration form)
every day 2 days 2023/06/21 - ongoing one pass per file -
Jason-3 FTP, please refer to
 your dedicated 
MY AVISO+
 
every day 2 days last 3 months online 18 MB
Saral 19 MB
Jason-2 15 MB

See also Sensor Geophysical products available on the catalogue (through menu DATA)

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