Products & Algorithms

Standard Product & Algorithm

Area Product[ID*1] Definition & Unit Algorithm
ID
Responsible
Person
Last
update
ATBD
Download
Sample data*2
(HDF5 Format)
Radiance Level-1A
[VNR/IRS/POL]
  • Def.: Sensor output (digital counts)
  • Unit: none
G1 JAXA - - 250m resolution granule (VNR) 250m resolution granule (IRS) 1km resolution path (POL)
Level-1B
[VNR/IRS/POL]
  • Def.: Calibrated radiance (granule scene or path data projected on reference coordinate)
  • Unit: W/m2/um/sr
G1 JAXA - - 250m resolution granule (VNR) 1km resolution granule (VNR) 250m resolution granule (IRS) 1km resolution granule (IRS) 1km resolution path (POL)
LTOA
  • Def.: Top-of-atmosphere (TOA) radiance
  • Unit: W/m2/um/sr
  • G2A
  • G2B
  • G2C
  • JAXA
  • Hashimoto
  • Takaku
Nov. 2018 PDF 250m resolution tile 1km resolution tile
G3A Murakami Oct. 2018 PDF 1/24 deg. resolution global equal-area projection
LCLR
  • Def.: Top-of atmosphere (TOA) radiance only for clear
  • Unit: W/m2/um/sr
1/24 deg. resolution global equal-area projection
Land Atmospheric corrected reflectance
[RSRF]
  • Def.: Land surface reflectance corrected for the effects of atmospheric scattering and absorption. Correction of directional anisotropic effects are also made for 8-day and monthly composite products.
  • Unit: none
T1A H.Murakami Oct. 2018 PDF 250m resolution tile
Vegetation index
[VGI_ (NDVI/EVI_)]
  • Def.: Indices indicating vegetation cover and activity such as NDVI and EVI
  • Unit: none
T2A JAXA Nov. 2018 PDF 250m resolution tile
Above-ground biomass
[AGB_]
  • Def.: Dry weight of above-ground vegetation
  • Unit: t/ha
T3A K.Kajiwara Mar. 2015 PDF 1km resolution tile
Vegetation roughness index
[AGB_(VRI_)]
  • Def.: An index indicating plant vertical structure observed from multi-angle directions.
  • Unit: none
Shadow index
[VGI_ (SDI_)]
  • Def.: An index indicating shadow fraction of vegetation area inferred from spectral reflectance.
  • Unit: none
T2A M. Moriyama Sep. 2014 PDF 250m resolution tile
Fraction of absorbed PAR
[LAI_ (FPAR)]
  • Def.: Fraction of photosynthetically active radiation absorbed by vegetation
  • Unit: none
T2B Y.Honda Nov. 2011 PDF 250m resolution tile
Leaf area index
[LAI_]
  • Def.: The sum of the one sided green leaf area per unit ground area.
  • Unit: none
Land surface temperature
[LST_]
  • Def.: Temperature of terrestrical land surface.
  • Unit: Kelvin
T4A M. Moriyama Sep. 2014 PDF 250m resolution tile
Atmosphere Cloud flag/Classification
[CLFG]
  • Def.: Cloud discrimination flag including the classification of cloud type and phase (liquid/solid).
  • Unit: none
A1ABC T.Y. Nakajima Sep. 2011 PDF 250m resolution tile 1km resolution tile 1/24 deg. resolution global equal-area projection
Classified cloud fraction
[CLPR(CFR*)]
* is the No. of the ISCCP classes
  • Def.: Cloud fractions for 9 cloud types which are classified based on the ISCCP classification rule.
  • Unit: percent
A2AB T.Y. Nakajima Sep. 2011 PDF 1km resolution tile 1/24 deg. resolution global equal-area projection
Cloud top temp/height
[CLPR (CLTT/CLTH)]
  • Def.: Temperature and height of cloud top layer.
  • Unit: Kelvin for temperature, km for height
Water cloud OT/effective radius
[CLPR (COTW/CERW)]
  • Def.: Optical thickness and effective radius of water cloud droplets
  • Unit: none for thickness, mm for radius
Ice cloud optical thickness
[CLPR (COTI)]
  • Def.: Optical thickness of ice cloud.
  • Unit: none
Aerosol over the ocean
[ARNP (AOTO/AAEO)]
  • Def.: Optical thickness, Ångström exponent, and classification of aerosol over ocean estimated using visible and near infrared band.
  • Unit: none
A3AB M.Yoshida Jul. 2018 PDF 1km resolution tile 1/24 deg. resolution global equal-area projection
Land aerosol by near ultra violet
[ARNP (AOTL/AAEL)]
  • Def.: Optical thickness and light absorption coefficient of aerosol over land estimated using near-ultraviolet band.
  • Unit: none
Aerosol by Polarization
[ARPL (AOTP/AAEP/ASSA)]
  • Def.: Optical thickness, Ångström exponent, and classification of aerosol estimated using polarization bands.
  • Unit: none
A4AB I. Sano Nov. 2018 PDF 1km resolution tile 1/24 deg. resolution global equal-area projection
Ocean Normalized water leaving radiance
[NWLR(L***)]
*** is wavelength.
  • Def.: The upwelling radiance just above the sea surface.
  • Unit: W/m2/str/um or 1/sr
O2AB M.Toratani Oct. 2011 PDF 250m resolution granule 1km resolution granule
Atmospheric correction param
[NWLR (T***)]*** is wavelength.
  • Def.: Aerosol optical properties for the atmospheric correction over ocean.
  • Unit: none
Photosynthetically available radiatioin
[NWLR (PAR_)]
  • Def.: Photon flux density within the visible wavelength range (400 to 700 nm) over ocean which is potencially available to plant for photosynthesis.
  • Unit: Ein/m2/day or mol photons/m2/day
H. Murakami Oct. 2018 PDF
Chlorophyll-a concentration
[IWPR (CHLA)]
  • Def.: Concentration of the green pigment in phytoplankton in sea surface layer.
  • Unit: mg/m3
O3AB H. Murakami Oct. 2018 PDF 250m resolution granule 1km resolution granule
Suspended solid concentration
[IWPR (TSM_)]
  • Def.: Dry weight of suspended matter in a unit volume of surface water which is the sum of organics such as phytoplankton and inorganics such as soil.
  • Unit: g/m3
M.Toratani Oct. 2011 PDF
Colored dissolved organic matter
[IWPR (CDOM)]
  • Def.: Light absoption coefficient of organics dissolved in surface water.
  • Unit: 1/m
T.Hirata Sep. 2011 PDF
Sea surface temperature
[SSTD/SSTN (SST_)]
  • Def.: Temperature of sea surface.
  • Unit: deg.C)
O1AB Y. Kurihara Oct. 2018 PDF 250m resolution granule 1km resolution granule
Cryosphere Snow and Ice covered area
[SICE]
  • Def.: The extent of global snow and ice cover.
  • Unit: none
C1AB K. Stamnes Mar. 2016 PDF 250m resolution tile 1km resolution tile
OKhotsk sea-ice distribution
[OKID]
  • Def.: The extent of sea ice in Okhotsk Sea.
  • Unit: none
C1C K. Stamnes Mar. 2016 PDF 250m resolution granule
Snow and ice surface Temperature
[SIPR (SIST)]
  • Def.: Temperature of snow and ice surface.
  • Unit: Kelvin
C2AB K. Stamnes Mar. 2016 PDF 250m resolution tile 1km resolution tile
Snow grain size of shallow layer
[SIPR (SGSL)]
  • Def.: Grain size of snow ice particle in shallow layer derived mainly from SGLI 865nm band reflectance.
  • Unit: μm
Statistics Level-2 Tile Statistics
  • Def.: Temporal statistics of SGLI Level-2 (L2) Tile geophysical variable (GV) products for land and cryosphere.
  • Unit: Same as the L2 variables
G4A M.Hori Mar. 2017 PDF 250m resolution tile (NDVI) 1km resolution tile (SIST)
LTOA Title Mosaic
  • Def.: Cloud-free top-of-atmosphere (TOA) radiance data from Level-2 Tile LTOA (TOA radiance) product.
  • Unit: Same as the L2 variables
G4B M.Hori Mar. 2017 PDF 250m resolution tile (LTOA)
RSRF Tile Statistics
  • Def.: Temporal statistics of the Atmospheric corrected reflectance (RSRF) with the correction of directional dependence.
  • Unit: none
G4C H.Murakami Oct. 2018 PDF 250m resolution tile (RV11: atmospheric corrected reflectance of VN11) 250m resolution tile (GEOV: geometric data of VNR)
Level-3 Global Spatial Binning
  • Def.: Spatial statistics of SGLI Level-2 (L2) daily geophysical variable (GV) products reducing the spatial resolution to 1/24 deg. resolution (land, cryosphere, and ocean) or 1/12 deg. resolution (atmosphere).
  • Unit: Same as the L2 variables
G5A M.Hori Mar. 2017 PDF 1/24 deg. resolution global bin (1-dimensional) (SST_) 1/12 deg. resolution global bin (1-dimensional) (CERW) 1/24 deg. resolution global bin (1-dimensional) (NDVI) 1/24 deg. resolution global bin (1-dimensional) (SIST)
Level-3 Global Temporal Binning
  • Def.: Temporal statistics of SGLI Level-3 (L3) spatially-binned geophysical variable (GV) products.
  • Unit: Same as the L2 variables
G6A M.Hori Mar. 2017 PDF 1/24 deg. resolution global bin (1-dimensional) (SST_) 1/12 deg. resolution global bin (1-dimensional) (CERW) 1/24 deg. resolution global bin (1-dimensional) (NDVI) 1/24 deg. resolution global bin (1-dimensional) (SIST)
Level-3 Global Map
  • Def.: Map-projected images of the SGLI Level-3 (L3) spatially- or temporally- binned geophysical variable (GV) products.
  • Unit: Same as the L2 variables
G7A M.Hori Mar. 2017 PDF 1/24 deg. resolution global map (SST_) 1/12 deg. resolution global map (CERW) 1/24 deg. resolution global map (NDVI) 1/24 deg. resolution global map (SIST) 1/24 deg. resolution northern hemisphere map (SIST) 1/24 deg. resolution southern hemisphere map (SIST)

*1:Product ID of Leve-2 product is written in [ ] and Level-3 is written in ( ).

*2:By clicking "HDF5", you can download sample data that file format is HDF5.Also, you can view jpeg images created from sample data by clicking "jpeg (phyisical ID)".These are samples for checking data format. Accuracies of the physical variables are still under evaluation.