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Jeux de données ou réanalyses à récupérer/mettre à jour
A. Observations spatiales
Flux radiatifs CERES/EBAF
sur /san0/bony/d_diags_climatos/d_EBAF
ou
sur http://eosweb.larc.nasa.gov/PRODOCS/ceres/level4_ebaf_table.html
- 1 deg x 1 deg
- Mar2000 - oct2005
- monthly means
- variables: flux totaux, ciel-clair, albedo
Etat
Flux radiatifs CERES: (non EBAF)
CERES data from the GEWEX-RFA (GEWEX radiative flux assessment)
http://eosweb.larc.nasa.gov/GEWEX-RFA/documents/data_format.html#s_spec
- donnees en ascii avec prog lecture
- variables: flux totaux, ciel-clair, albedo
sur meme site: on trouve aussi flux rad de surface (moins fiable qu'au TOP mais interessant qd meme, surtout pour SW)
Etat
Precipitation GPCP
GPCP Version 2 Combined Precipitation Data Set: Monthly Means from combined satellite/station data sur
http://www.cdc.noaa.gov/cdc/data.gpcp.html
- 2.5 deg x 2.5 deg global grid (144x72)
Référence: Adler, R.F., G.J. Huffman, A. Chang, R. Ferraro, P. Xie,
- Janowiak, B. Rudolf, U. Schneider, S. Curtis, D. Bolvin, A. Gruber, J. Susskind, and P. Arkin, 2003: The Version 2 Global Precipitation Climatology Project (GPCP) Monthly Precipitation Analysis (1979-Present). J. Hydrometeor., 4,1147-1167.
Etat traité
Données récupérées le 7 avril 2009
Disponible sur /san0/fairhead/GPCP
Precipitation TRMM
- 0.25 deg x 0.25 deg
- +/- 40 ou 50 deg lat only
produit 3B43: grillé, melange satellites (radar, microondes, etc) + gauges sur terre
sur http://daac.gsfc.nasa.gov/data/datapool/TRMM/01_Data_Products/02_Gridded/07_Monthly_Other_Data_Source_3B_43/index.html
Climato also available (in grads format) on anonymous ftp site lake.nascom.nasa.gov ; directory /data/TRMM/Gridded/3B43_V6/clim_98-05
Etat
Données micro-ondes SSM/I
- variables: eau precipitable (prw ou WVP; le plus fiable)
autres variables (e.g contenus en eau liq/glace intégré): fiabilité?
- 2.5 deg x 2.5 deg ou 1 deg x 1 deg
- global mais ocean only (microondes)
- Jul1987 - Dec2008
sur http://www.ncdc.noaa.gov/oa/satellite/ssmi/ssmiproducts.html#Data
Format binaire avec prog de lecture
Etat
Données AIRS
moyennes mensuelles sur http://mirador.gsfc.nasa.gov[[BR]] ce service permet de recuperer une liste de fichiers en netcdf à charger avec wget
les données de Jun2006 a Jan2009 sont déjà sur /san0/bony/d_AIRS en netcdf
e.g. !AIRS.2007.07.01.L3.RetStd031.v5.0.14.0.G07332180603.nc
(mais je n'ai pas encore récupéré les données antérieures : Sep2002 - Mai2006)
plein de variables, en particulier: humidite relative (RelHumidLiq) et temperature (Temperature)
Etat
Données HOAPS du DKRZ (flux de surface)
- http://cera-www.dkrz.de/WDCC/ui/Compact.jsp?acronym=HOAPS3_MONTHLY
- Jul1987 - Dec2005
- global mais ocean only (microondes)
- Netcdf
- 1 deg x 1 deg
- Variables: plein (SST, evap, LWsfc, SH, LH, Vsurf, prw, etc)
Documentation:
The Hamburg Ocean Atmosphere Parameters and Fluxes from Satellite Data (HOAPS) set is a completely satellite based climatology of precipitation, evaporation and freshwater budget (evaporation minus precipitation) as well as related turbulent heat fluxes and atmospheric state variables over the global ice free oceans.
All variables are derived from SSM/I passive microwave radiometers, except for the SST, which is taken from AVHRR measurements. The data set includes multi-satellite averages, inter-sensor calibration, and an efficient sea ice detection procedure.
Changes in this version are a prolonged time series, now containing data from 1987 to 2005, a new neural network based precipitation algorithm, and inclusion of the RSMAS/NODC Pathfinder Version 5 SST fields. Additionally a new 85 GHz synthesis procedure has been implemented for the time period to compensate for the missing channel information on DMSP F08, see accuracy report.
Apart from monthly and pentad (5-day) means on a global 0.5 deg. x 0.5 deg. grid, twice daily multi-satellite composite data on a global 1 x 1 grid are available.
Access: You will find the datasets in the CERA database:
http://cera-www.dkrz.de/WDCC/ui/Compact.jsp?acronym=HOAPS3_MONTHLY
To get data, you have to get an account as described here:
Then you can add datasets to your process list and download the data. Another possibility is to use the jblob command line tool:
Etat traité
Récupération le 8 avril 2009 sur les disques san hébérgés au CCRE
Accessibles depuis les machines du labo sur /san0/fairhead/HOAPS3/VAR où VAR est la variable voulue:
ASST | Sea Surface Temperature |
BUDG | Freshwater Flux |
DHUM | Difference in Humidity |
EVAP | Evaporation |
FNET | Longwave Net Flux |
HAIR | Specific Air Humidity |
HEAT | Sensible heat Flux |
HSEA | Sea Surface Saturation Specific Humidity |
LATE | Latent heat Flux |
LWPA | Liquid Water Path |
RAIN | Rain Rate |
TRCE | Latent heat transfer coefficient |
TWPA | Total Water Path |
WIND | Windspeed at 10m |
WVPA | Water Vapor Path |
Données ISCCP (total cloud cover and cloud types)
- Jul1983-Dec2007
- 2.5 deg x 2.5 deg
- site ftp:
- isccp.giss.nasa.gov directory /pub/data/D2 ou D2CLOUDTYPES etc
prog de lecture (et grillage des données sur grille reguliere) sur meme site
Etat
B. Réanalyses
NCEP2: NCEP/DOE AMIP-II Reanalysis (Reanalysis-2)
- resol: 144 x 73 x 17 levels
- Jan 1979 - Jan 2008 (au moins)
- Netcdf data (daily, monthly, etc) accessibles par ftp:
http://www.cdc.noaa.gov/data/gridded/data.ncep.reanalysis2.html
également sur climserv (/bdd/ncep2) mais vérifier mise à jour?
Etat
ERAinterim
- sur climserv en 4xdaily only (/bdd/ERAI/NETCDF/GLOBAL_075)
- sur http://data-portal.ecmwf.int/data/d/interim_moda/levtype=pl/
e.g. monthly means of daily means (aussi daily, etc)
- resol: 1.5 deg x 1.5 deg
- Jan1989 - Dec2007
- Netcdf
- plein de variables 2D, 3D, etc
Etat
Doc sur la comparaison des difftes reanalyses (NCEP2, ERA50, JRA)
http://www.atmosp.physics.utoronto.ca/SPARC/DA/DA%20Presetnations%20to%20web/IWASAKI.pdf