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Acces to CERSAT data

Anonymous User <nospam@ez.no> -

Tuesday 25 October 2005

This section gives access to the dissemination facilities for CERSAT products : media (CD, DVD, exabyte), ftp, web,...

FTP : product downloadable from ftp (last weeks or full archive)

WWW : product that can be subsetted by filling a web form. The request result is noticed to the user by e-mail. The data subset is made available as a tar file (referenced in the e-mail) on CERSAT anonymous ftp server (ftp.ifremer.fr, directory pub/ifremer/cersat/tmp)

DVD : product available on cdrom or dvd, distributed free of charge on request.

Swath products

ERS OPR

ers

Earth-located sea surface height, significant wave height, wind speed and radar backscatter values.

Access : WWW, CDROM, FTP, DVD

Credits : Ifremer/CERSAT for ESA

ERS VLC

ers

Credits : Ifremer/CERSAT for ESA

ERS WNF

ers

Earth-located wind vector ambiguities ranked by likelihood, with an indicator of the selected vector.

Access : WWW, DVD

Credits : Ifremer/CERSAT for ESA

NSP 1.5

Earth-located radar backscatter data, with surface type flags (ocean/ice/land) assigned.

Access : WWW, FTP

Credits : JPL/PO.DAAC

NSP 1.7

Radar backscatter and associated data colocated in wind vector cells.

Access : WWW, FTP

Credits : JPL/PO.DAAC

NSP 2.0

Earth-located wind vector ambiguities ranked by likelihood, with an indicator of the selected vector.

Access : WWW, FTP

SeaWinds on QuikSCAT Level 2B Ocean Wind Vectors in 25 Km Swath

QuikSCAT Level 2B

These data are produced by the NASA Physical Oceanography Distributed Active Archive Center, at Jet Propulsion Laboratoty, California Institute of California (JPL/PO.DAAC). The CERSAT distributes the data as a mirror site for Europe.

Access : WWW, FTP, FTP [PO.DAAC]

SeaWinds on QuikSCAT Level 2A Surface Flagged Sigma-0s and Atten

qscat_transp

These data are produced by the NASA Physical Oceanography Distributed Active Archive Center, at Jet Propulsion Laboratoty, California Institute of California (JPL/PO.DAAC). The CERSAT distributes the data as a mirror site for Europe. The distribution of the L2A data is restricted to JPL/PO.DAAC-approved users.

Access : WWW, OpenDAP, FTP

EUR-L2P-SEVIRI_SST

eur-l2p-seviri_sst

These 0.1 degree resolution SST data are derived from the METEOSAT-8 SEVIRI Infra-red imager. They are processed at the Météo-France data reception station (Centre de Météorologie Spatiale) in Lannion for Medspiration project (funded by ESA).

Access : OpenDAP, FTP

Credits : MEDSPIRATION Project The data are processed at Meteo-France/CMS from EUMETSAT O&SI SAF Level 2 data.

EUR-L2P-ATS_NR_2P

eur-l2p-ats_nr_2p

SST from AATSR

Access : OpenDAP, FTP

Credits : MEDSPIRATION Project The data are processed at Ifremer/CERSAT from ESA Level 2 data

EUR-L2P-NARxx_SST

These data are 2km resolution sea surface temperature data over North-East Atlantic in GHRSST level 2P format, including useful ancillary data (aerosols, wind, sea ice fraction and solar irradiance) as well as quality information and error estimation. They are generated in the frame of ESA-funded MEDSPIRATION project.

Access : OpenDAP, FTP

Credits : MEDSPIRATION Project These data are processed at Meteo-France/CMS from EUMETSAT O&SI SAF Level 2 data.

EUR-L2P-AVHRRxx_G

eur-l2p-avhrr17_g

High quality Sea Surface Temperatures (SSTs) maps derived from the NOAA (National Oceanic and Atmospheric Administration)-Polar Orbiting Advanced Very High Resolution Radiometer (AVHRR) have been available since 1981. The multichannel sea surface temperature algorithm (MCSST) has been used to routinely calculate SSTs using a split window approach. Currently this algorithm is applied by the Naval Oceanographic Office (NAVOCEANO) to calculate SSTs at a near real-time rate. The MEDSPIRATION project consolidates the NAVOCEANO data to the L2P level over the Atlantic ocean and in near real-time, following the processing model defined by the GODAE High Resolution Sea Surface Temperature Pilot Project (GHRSST-PP).

Credits : MEDSPIRATION Project These data are processed at Meteo-France/CMS from NAVOCEANO Level 2 data

Gridded products

ERS MWF

ERS mean wind field

Surface wind fields on fixed time/space grids are very useful in many oceanographic applications. To fulfill this need, CERSAT generates the ERS mean wind fields (MWF) from WNF product (swath product of ERS-1 & ERS-2 scatterometers), using an objective mapping technique (kriging). They constitute a homegeneous temporal series of weekly and monthly wind fields, on global 1°x1° resolution grids, over more than 10 years.

Access : WWW, FTP, DVD

Credits : Ifremer/CERSAT

NSCAT MWF

ADEOS-2/NSCAT mean wind field

Surface wind fields on fixed time/space grids are very useful in many oceanographic applications. To fulfill this need, CERSAT generates the NSCAT mean wind fields (MWF) from NSP 2.0 product (swath product of NSCAT scatterometer, distributed by JPL/PO.DAAC), using an objective mapping technique (kriging). They constitute a homegeneous temporal series of weekly and monthly wind fields, on global 1°x1° resolution grids.

Access : WWW, FTP, DVD

Credits : Ifremer/CERSAT

MWF-QuikSCAT

QuikSCAT MWF

Surface wind fields on fixed time/space grids are very useful in many oceanographic applications. To fulfill this need, CERSAT generates the QuikSCAT mean wind fields (MWF) from L2B product (swath product of SeaWinds on QuikSCAT scatterometer, distributed by JPL/PO.DAAC), using an objective mapping technique (kriging). They constitute a homegeneous temporal series of daily, weekly and monthly wind fields, on global 0.5°x0.5° resolution grids, which extends the ERS and NSCAT series with better spatial and temporal resolution.

Access : WWW, FTP, DVD

Credits : Ifremer/CERSAT contact : Jean-François Piollé and Abderrahim Bentamy

MWF Blended

In order to enhance the spatial and temporal resolution of surface wind, the remotely sensed wind retrievals are blended to the operational ECMWF wind analyses over the global ocean. The blending method aims at providing 6-hourly gridded zonal and meridional wind speed and stresses at global scale. The spatial resolution of the resulting wind fields is 0.25 deg in longitude and latitude. The blended wind fields are calculated from April 2004 until present. They are considered as test data that will provide useful insight for near real time production of high space and time resolution at global and regional scales. They are estimated from near real time satellite observations (QuikScat scatteromter and SSM/I radiometers) and ECMWF operational wind analysis. The spatial and temporal resolutions are 0.25x0.25 degrees in longitude and latitude, and 6 hours. The blended products are available at synoptic time 00h:00; 06h:00; 12h:00; 18h:00 with a short delay from the real time (24 hours in a nominal mode).

Access : FTP

Credits : Ifremer/CERSAT contact : Denis Croisé-Fillon and Abderrahim Bentamy

EUR-L4-UHFnd-MED

Interpolated maps of sea surface temperature (SST) from merged sensors.

Access : OpenDAP, Google Earth, FTP, Live Access Server

Credits : MEDSPIRATION Project
These data are processed at Ifremer/CERSAT

SSMI PSI

NSIDC distributes low resolution frequency brightness temperature data with a resolution of 25 x 25 km, and since 1992, the high frequency 85 GHz data on a higher resolution map (12.5 x 12.5 km). This frequency is used to processed daily sea ice concentration maps at 12.5 km resolution.

Credits : Ifremer/CERSAT

Gridded merged sea-ice drift vectors (PSI-Drift)

Polar sea-ice drift map

Few continuous and operationally delivered data about sea-ice drift exist. But this motion can be estimated using various correlation methods between time-lag satellite images (radiometric or radar). The motion vectors provided within this product are processed from backscatter maps as retrieved from the NASA QuikSCAT/SeaWinds scatterometer (product PSI-QuikSCAT from CERSAT) and the SSM/I brightness temperature maps provided by NSIDC.

Credits : Ifremer/CERSAT

Gridded AMSR sea-ice drift vectors

Few continuous and operationally delivered data about sea-ice drift exist. But this motion can be estimated using various correlation methods between time-lag satellite images (radiometric or radar) . The motion vectors provided within this product are processed from AMSR-E brightness temperature maps provided by IUP Bremen (Germany).

Credits : Ifremer/CERSAT

QuikSCAT PSI

QuikSCAT polar sea ice map

Up to now, to follow sea ice evolution, scientists had the choice between SSM/I for global monitoring and SAR images for regional studies. Methods developed at the "Laboratoire d'Océanographie Spatiale" for sea ice detection with the ERS C-band scatterometer, extended to NSCAT and SeaWinds on QuikSCAT ku-band scatterometers provide scientists with another dataset, covering each pole.

Credits : Ifremer/CERSAT

NSCAT PSI

NSCAT polar sea-ice map

Up to now, to follow sea ice evolution, scientists had the choice between SSM/I for global monitoring and SAR images for regional studies. Methods developed at the "Departement d'Océanographie Spatiale" for sea ice detection with the ERS C-band scatterometer, extended to NSCAT and SeaWinds on QuikSCAT ku-band scatterometers provide scientists with another dataset, covering each pole. Generated from the ADEOS/NSCAT scatterometer swath product (NSP 1.5 product, distributed by JPL/PO.DAAC), the PSI-NSCAT product consists of sea ice characterisations, averaged over 3 days and mapped on NSIDC 25 km resolution grids.

Access : WWW

Credits : Ifremer/CERSAT

ERS PSI

ERS polar sea-ice map

Up to now, to follow sea ice evolution, scientists had the choice between SSM/I for global monitoring and SAR images for regional studies. Methods developed at the "Departement d'Océanographie Spatiale" for sea ice detection with the ERS C-band scatterometer, extended to NSCAT and SeaWinds on QuikSCAT ku-band scatterometers provide scientists with another dataset, covering each pole.

Access : WWW

Credits : Ifremer/CERSAT

RAIN-ALT

Access : FTP

Credits : Jean Tournardre, IFREMER/CERSAT

QuikSCAT K-CO2

K CO2

This product provides mean fields of CO2 exchange coefficients corresponding to three different relationships between air-sea gas transfer velocities (k) and wind speed (U), from QuikSCAT scatterometer. It includes both weekly and monthly means on a global 0.5 degree resolution grid, starting from mid-1999.

Access : FTP

Credits : Jacqueline Boutin (IPSL/LOCEAN), Jean-François Piollé (Ifremer/CERSAT) and Yves Quilfen (Ifremer/CERSAT) for CARBO-OCEAN project.

ERS K-CO2

K CO2

This product provides mean fields of CO2 exchange coefficients corresponding to three different relationships between air-sea gas transfer velocities (k) and wind speed (U), from ERS-1 and ERS-2 scatterometer. It includes both weekly and monthly means on a global 1 degree resolution grid, starting from 1991 to 2000.

Access : FTP

Credits : Jacqueline Boutin (IPSL/LOCEAN), Jean-François Piollé (Ifremer/CERSAT) and Yves Quilfen (Ifremer/CERSAT) for CARBO-OCEAN project.

Scatdb

The windscatterometers aboard ERS-1 and ERS-2 provide global measurements of the normalised radar cross section (NRCS) of the Earth's surface in form of a statistical database since August 1991. This database contains 8 years ERS C-band scatterometer observations over land and ice surfaces: data are easy accessible and the CD offers various interactive tools for data selection based on spatial, temporal or classification constraints.

Credits : IFARS

Colocated products

Satellite/satellite colocation products

Colocation NSCAT/NSP 1.7 - ERS-2/WNF

colsat

This product consists in the colocation of backscatter measurements (NSP 1.7 product from JPL/PO.DAAC) from NSCAT scatterometer, onboard ADEOS japanese satellite, together with wind measurements (WNF product from CERSAT) from european AMI-Wind scatterometer ERS-2.

Access : WWW

Colocation QuikSCAT/L2A & L2B - ERS-2/OPR

colsat

This product provides a dataset colocating the measurements from Seawind scatterometer produit L2B du JPL/PO.DAAC), onboard QuickSCAT, together with the measurements (wind, waves, SST,...) from buoy networks.

Access : WWW, FTP

Colocation QuikSCAT/L2A & L2B - ERS-2/WNF

colsat

This product provides a dataset colocating backscatter and wind measurements from SeaWinds scatterometer (L2A & L2B products from JPL/PO.DAAC), onboard QuikSCAT, together with wind measurements from european AMI-Wind scatterometer onboard ERS-2 (WNF product from CERSAT).

Access : WWW, FTP

Colocation NSCAT/NSP 1.7 - ERS-2/OPR

colsat

This product consists in the colocation of backscatter measurements (NSP 1.7 product from JPL/PO.DAAC) from NSCAT scatterometer, onboard ADEOS japanese satellite, together with measurements (OPR product from CERSAT) from european RA altimeter onboard ERS-2 .

Access : WWW

Colocation QuikSCAT/L2A & L2B - topEX/GDR

colsat

This product provides a dataset colocating backscatter and wind measurements from SeaWinds scatterometer (L2A & L2B products from JPL/PO.DAAC), onboard QuikSCAT, together with measurements from the topEX american altimeter (GDR-M product from CLS/AVISO).

Colocation NSCAT/NSP 2.0 - ERS-2/OPR

colsat

This product consists in the colocation of backscatter measurements (NSP 2.0 product from JPL/PO.DAAC) from NSCAT scatterometer, onboard ADEOS japanese satellite, together with measurements (OPR product from CERSAT) from european RA altimeter onboard ERS-2 .

Access : WWW

Colocation NSCAT/NSP 2.0 - ERS-2/WNF

colsat

This product provides a dataset colocating backscatter measurements (NSP 2.0 product from JPL/PO.DAAC) from NSCAT scatterometer, onboard ADEOS japanese satellite, together with wind measurements (WNF product from CERSAT) from european AMI-Wind scatterometer ERS-2.

Access : WWW

Colocation QuikSCAT/L2A & L2B - SSM/I

colsat

This product provides a dataset colocating the measurements from Seawind scatterometer produit L2B du JPL/PO.DAAC), onboard QuickSCAT, together with the measurements of the radiometer SSM/I (NASA/MSFC-DAAC product), on board the F13 ans F14 satellites, on the colocation area.

Access : WWW, FTP

Satellite/buoys colocated products

Colocation Envisat ASAR Wave Mode (ASA-WVS-1P) - Buoys

coloc

This product provide a dataset colocating cross spectra from ASAR (ASA-WVS-1P product from ESA), onboard Envisat, together with measurements (wind, waves, SST...) from buoy networks.

Access : WWW, FTP

Colocation Envisat ASAR Wave Mode (ASA-WVS-1P) - Buoys

coloc

This product provide a dataset colocating wave spectra from ASAR (ASA-WVW-2P product from ESA), onboard Envisat, together with measurements (wind, waves, SST...) from buoy networks.

Access : WWW, FTP

Satellite/model colocation products

Colocation NSCAT/NSP 1.7 - ECMWF

This product consists in the colocation of backscatter measurements (NSP 1.7 product from JPL/PO.DAAC) from NSCAT scatterometer, onboard ADEOS japanese satellite, together with the ECMWF (European Centre for Medium-range Weather Forecasting) re-analysis.

Access : WWW

Colocation NSCAT/NSP 2.0 - ECMWF

colmodel

This product consists in the colocation of backscatter measurements (NSP 2.0 product from JPL/PO.DAAC) from NSCAT scatterometer, onboard ADEOS japanese satellite, together with the ECMWF (European Centre for Medium-range Weather Forecasting) re-analysis.

Access : WWW

Colocation QuikSCAT/L2B - ECMWF

qscat_transp

This product provides a dataset colocating backscatter and wind measurements from SeaWinds scatterometer (L2A & L2B products from JPL/PO.DAAC), onboard QuikSCAT, together with the wind fields from the ECMWF (European Centre for Medium-range Weather Forecasting) reanalyses.

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