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Product information / operation

Information about products and their operation is provided by spacecraft.

Product Description

This service calculates and provides the following geophysical parameters from the observation data as standard products.


Product Level


Product
Level
ContentsDescription
1AUncorrected
The product that contains the count value, variable coefficient for radiometric correction, geometry information corresponding to each observation point (observation position, solar angle, observation direction, etc.), and supplementary information of uncorrected observation data.
1BBrightness TemperatureThe product that contains the converted data from level 1A data, converting observation data into brightness temperature using radiometric correction, and supplementary information same as L1A.
1RBrightness Temperature
(Resampling)
The product that contains the converted data from level 1B product, adapting the resolution of each frequency and processing altitude correction.
2Physical Parameters
(Scene)
The product that contains the converted data from level 1B or 1R product, calculating physical parameters about water (Total Precipitable Water, Cloud Liquid Water, Precipitation, Sea Surface Wind speed, Sea Surface Temperature, Sea Ice Concentration, Snow Depth, Soil Moisture Content), and supplementary information.
3Physical Parameters
(Global Data)
The product that contains converted data from level 2 product, including previously defined global grid, observation data of daily or monthly average, and the supplementary information.

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Geophysical Parameters


AreaPhysical ParametersDescription
AtmosphereTotal Precipitable Water
Amount of vertically accumulated water vapor (H2O in gaseous state) in the atmosphere, and defined as amount of water per unit area. Coverage of the product is over the ocean only, and unit is [kg/m2]. Total precipitable water is one of essential hydrological parameters describing state of the atmosphere along with precipitation and cloud liquid water.
Cloud Liquid Water
Amount of vertically accumulated cloud droplet in the atmosphere, and defined as amount of water per unit area. Coverage of the product is over the ocean only, and unit is [kg/m2]. Cloud liquid water is one of essential hydrological parameters describing state of the atmosphere along with precipitation and total precipitable water.
Precipitation
Although "precipitation" is usually defined as amount of water, which reaches the surface of the earth from atmosphere as rain and/or snow, microwave imager's precipitation products provide amount of rain (surface rainfall). Coverage of the product is global, and unit is [mm/hr]. Accuracy of rainfall estimate over land, however, tends to be lower than that over the ocean. Method of rainfall estimate used in AMSR2 precipitation product is also applied to "Global Rainfall Watch" system, which distributes global rainfall map in near-real-time.
OceanSea Surface Temperature
Temperature of water at ocean surface. Coverage of the product is over the ocean only, and unit is [°C]. Its horizontal resolution is about 20-30 km and coarser than that of optical instruments. Microwave radiometer, however, can observe ocean surface through clouds, and monitor continuous change of sea surface temperature over the ocean where few clear region can be found in specific areas or seasons.
Sea Surface Wind speed
Wind speed above the ocean surface. Coverage of the product is over the ocean only, and unit is [m/s]. Microwave radiometer can observe wind speed under the clouds, but it is difficult to estimate where there is rainfall and will be missing value. Wind speed around tropical cyclones, however, is important parameter in weather forecast, and we provide research product, which includes wind speed in rainy area over the ocean, as all-weather wind speed research product.
CryosphereSea Ice Concentration
Percentage of sea ice coverage within target ocean area. Coverage of the product is over the ocean around Arctic and Antarctic Sea, and unit is [%]. There is no sea ice within pixel area when sea ice concentration is 0%, and all pixel area is covered by sea ice when it shows 100%. We can learn distribution of sea ice immediately using this product, and it become more and more important because of recent decrease of Arctic sea ice cover.
Land AreaSnow Depth
Depth of snow cover over land surface. Coverage of the product is over land only, and unit is [cm]. We do not provide snow cover over the sea ice surface. Snow depth parameter is closely related to climate variation, and this product enables us to figure out changes in distribution of global snow cover.
Soil Moisture Content
Amount of soil wetness near the ground surface as volume water content. Coverage of the product is over land only, and unit is [%]. Soil moisture cannot be estimated near the coast, around big lakes and marshes, or areas with wide spread dense forests. Since microwave radiometer can get data constantly and frequently, this product is used in monitoring of large-scale cultivation areas in the continents.

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Product Version History, Reprocessing Schedule



  • AMSR2
  • Product Version History
  •  Release
    Date
    Release
    Product
    (*1)
    L1,L2
    Product
    L3(Brightness Temperature/
    Geophysical Parameter)
    Remarks
    Latest
    Version
    2017/03/01SSTVersion 3.0
    (3.300.300)
    Version 3.0
    (3.300.300)
    Click here for the details
    SSW
    SIC
    SMC
    2016/08/23TBVersion 2.2
    (2.220.220)
    Version 2.2
    (2.220.220)
    Click here for the details
    2015/04/03TPWVersion 2.1
    (2.210.210)
    Version 2.1
    (2.210.210)
    Click here for the details
    CLW
    PRC
    SND
    Old
    Version
    2015/07/14SICVersion 2.2
    (2.220.220)
    Version 2.2
    (2.220.220)
    Click here for the details
    2015/04/03SSTVersion 2.1
    (2.210.210)
    Version 2.1
    (2.210.210)
    Click here for the details
    SSW
    SMC
    2013/12/05PRCVersion 1.1
    (1.110.100)
    Version 1.1
    (1.110.100)
    Click here for the details
    2013/05/17TPWVersion 1.0
    (1.100.100)
    Version 1.0
    (1.100.100)
    CLW
    SND
    2013/03/01TBVersion 1.1
    (1.110.110)
    Version 1.1
    (1.110.110)
    Click here for the details
    Old
    Version
    2015/04/03TBVersion 2.1
    (2.210.210)
    Version 2.1
    (2.210.210)
    Click here for the details
    SIC
    2015/03/26ALL ProductsVersion 2.0
    (2.200.200)
    Version 2.0
    (2.200.200)
    Click here for the details
    2013/09/25SMCVersion 1.1
    (1.110.100)
    Version 1.1
    (1.110.100)
    Click here for the details
    SICVersion 1.1
    (1.100.110)
    Version 1.1
    (1.100.110)
    2013/05/17SSTVersion 1.0
    (1.100.100)
    Version 1.0
    (1.100.100)
    SSW
    PRCJAXA has started
    offering geophysical
    parameter products.
    SMC
    SIC
    2013/01/25TBVersion 1.0
    (1.100.100)
    Version 1.0
    (1.100.100)
    JAXA has started
    offering brightness
    temperature products.

    (*1)PRC (Precipitation), SMC (Soil Moisture Content), SIC (Sea Ice Concentration),
          TPW (Total Precipitable Water), CLW (Cloud Liquid Water), SST (Sea Surface Temperature),
          SSW (Sea Surface Wind Speed), SND (Snow Depth), TB (Brightness Temperature)

  • Reprocessing Schedule

  • Release of Product (Ver.2.2) :August 23, 2016


    (※)JAXA will reprocess and provide AMSR2 products observed before August 23, 2016. (UTC)

    Release of Product (Ver.3.0) :March 01, 2017


    (※)JAXA will reprocess and provide AMSR2 products observed before March 01, 2017. (UTC)

    Please be advised that above reprocessing plan may be subject to change.

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    Satellite information

    Here provides AMSR2 sensor operational information.

  • GCOM-W1/AMSR2

  • GCOM-W1 Orbital Elements

    Here provides GCOM-W1 operational information.

  • TLE(Two Line Element)

  • Select data to download.

    TLE filename format NNNNNNYYYYMMDDHHmmss
    NNNNNN: W1TLEN:in case of nominal operation, W1TLEO:in case of off-nominal operation
    YYYYMMDDHHmmss: Epoch


  • Product Information
  • [NOTICE] Please read the caveats before using product. DPR data missing list is available from operation status below. 

  • Operation Status (Missing Data List, Maneuver History and Operation Mode history)
  • [NOTICE] Please open it by a spreadsheet application such as MS EXCEL. 
    Coming Soon…
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    Please read the caveats in Algorithm and Product Information page before using product. 

    Maneuver History

    Missing Data List

    Satellite Information

    See  Satellite Information other than above.


    Coming Soon…
    Coming Soon…
    Coming Soon…
    Please read the caveats in Algorithm and Product Information page before using product. 

  • Maneuver History
  • Missing Data List
  • Satellite Information
  • See  Satellite Information other than above.


    Coming Soon…
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    G-Portal provides the various helpful information,
    Operational Information, for our spacecraft and sensors,
    please check the below before search or retrieve our products.
     
    Maneuver HistoryThese are the history of controlling the satellite, delta V maneuver which are increased or decreased speed of spacecraft, the yaw-around maneuver which are rotated 180 degrees for keeping the Sun off the +Y side of spacecraft, and so on.
    Orbital ElementsThis orbital information indicates spacecraft position with 6 orbit elements. (Ex; Two-Line-Elements)
    Lost Data or Missing Data ListThese lists are the failure of getting data, lost data or missing data due to fail by some reason, for example, spacecraft orbit control, sensor calibration and so on.
    Operation Mode historyThese indicates the status change of each Spacecraft Operational Mode.(Ex; Observation,Stand-by, Calibration, Memory dump, and so on).
     Each spacecraft provides their orbital information respectively. 


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