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Product information / operation

Information about products and their operation is provided by spacecraft.

Satellite/Sensor Information

For operational information of GCOM-C/SGLI, please refer to the following documents.
Operation Event Information:Event information on satellite operation (orbit control information, calibration maneuver information etc.)
SGLI Data Loss Information:Data loss information on observation data

GCOM-C Observation Plan

Please refer to the following data to use the observation plan.
We also prepared the example how to read the data. Please refer to here.

FY2018
01     02     03a)     04a)     05a)     06a)     07b)     08e)     09b)     10b)     11d)     12b)    

FY2019
01c)     02d)     03c)     04c)     05c)     06c)     07c)     08c)     09c)     10c)     11c)     12c)    

a) Updated on March 22nd, 2018
b) Updated on May 18th, 2018
c) Updated on November 15th, 2018
d) Updated on February 5th, 2019
e) Updated on March 4th, 2019

GCOM-C Orbital Elements

The orbital elements of GCOM-C are listed below in the Two-Line Element(TLE) format.
Please refer to this page which includes the file name information.

We update the orbital elements on every Wednesday and Saturday. And the small number is new data.

<TLEN>
TLEN_01     TLEN_02     TLEN_03     TLEN_04
TLEN_05     TLEN_06     TLEN_07
*Update
   Last 7days

<TLEO>
TLEO_01     TLEO_02     TLEO_03

*Update
   TLEO_01 (2019.03.15)
   TLEO_02 (2018.08.29)
   TLEO_03 (2018.05.30)



Product Description

This service calculates and provides the following geophysical parameters from the observation data as standard products.
  • Product Level
  • Geophysical Parameters
  • SGLI Near-real-time Products
  • Granule ID
  • Product Version History
  • Reprocess Schedule


  • Product Level


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    Geophysical Parameters


    *1 Product ID of Leve-2 product is written in [ ] and Level-3 is written in ( ).
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    SGLI Near-real-time Products

    SGLI Near-real-time products(*)are available in addition to the standard products which the G-portal registered is able to acquire. In the case where a user requires a Near-real-time Product from G-Portal for research purpose, the user shall submit Application for “Special User” Registration to the following contact point.Please also check the GCOM-C Data Provision Policy.
    * Level 2 Products created by processing SGLI observation data, covering Japan and all around the globe, provided on a near-real-time basis.

    <Contact>
    GCOM-C special user request
    E-mail : gcomc-specialuser-request[*]ml.jaxa.jp
    (Note) Please change [*] to @.
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    Granule ID

    Please refer to section 4.1.3.3 (L1 product) and 4.1.4.2(L2 & L3 product) of GCOM-C Data Users Handbook to get the Granule ID format information.
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    Product Version History


    *1 Product ID of Level-2 product is written in [ ] and Level-3 is written in ( ).
    *2 This update related to only Near-real-time products. No effect to standard products (including reprocess products).

    <NOTE>
    ・Please note that some of Level-2 and 3 products which were created from Nov. 1st to Dec. 6th, 2018 were processed by using the pre-released products (applicable products).JAXA plans to reprocess products including Level-2 and 3 of these periods according to the following reprocess schedule.
    ・Regarding Level-2 tile products being released currently and global products which are processed by using Level-2 products, some missing data areas were found. Please note that we are currently correcting the algorithm to solve the problem.
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    Reprocess Schedule



    *Depending on the registration status, the release date and time of the reprocess products do not necessarily correspond to the table. Therefore, please use it as a rough guideline. And the table is shown the reprocessing status of L1B product. Following these L1B products, the L2 & L3 reprocess products are registered sequentially when processing is completed.
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    [ATBD]
    https://suzaku.eorc.jaxa.jp/GCOM_C/data/product_std.html
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    Satellite/Sensor information

    For operational information of GCOM-W1 and AMSR2, please refer to the following PDF.
  • Orbit Control Information (Event List)
  • AMSR2 Missing Line Information (Fair Data List)
  • AMSR2 Data Loss Information (Missing Data List)


  • GCOM-W Orbital Elements

    The orbital elements of GCOM-W are listed below in the Two-Line Element(TLE) format.
    Please refer to this page which includes the file name information.

    We update the orbital elements "TLEN" every day. And the small number is new data.

    <TLEN>
    TLEN_01     TLEN_02     TLEN_03     TLEN_04
    TLEN_05     TLEN_06     TLEN_07
    *Update
       Last 7days

    <TLEO>
    TLEO_01     TLEO_02     TLEO_03     TLEO_04
    TLEO_05     TLEO_06     TLEO_07

    *Update
       TLEO_01 (2019.06.11)
       TLEO_02 (2019.05.21)
       TLEO_03 (2019.03.05)
       TLEO_04 (2018.11.01)
       TLEO_05 (2018.06.19)
       TLEO_06 (2018.03.27)
       TLEO_07 (2018.03.13)


    Product Description

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

  • Product Level
  • Geophysical Parameters
  • Product Version History


  • Product Level


    Product
    Level
    ContentsDescription
    1AUncorrectedThe 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 WaterAmount 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 WaterAmount 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.
    PrecipitationAlthough "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 TemperatureTemperature 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 speedWind 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 ConcentrationPercentage 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 DepthDepth 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 ContentAmount 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


    [ATBD]
    https://suzaku.eorc.jaxa.jp/GCOM_W/data/data_w_algorithm.html
    [Release Note]
    https://suzaku.eorc.jaxa.jp/GCOM_W/materials/w_productinfo.html
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  • 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. 

    The data provision period of the satellite

    There are no operational information about satellite and instruments because this satellite has already finished observation.
    The data provision period of this satellite is as follows. (search only)

    •2006/05/15 - 2011/04/13

    Products can be ordered by distributor as follows:

    < PRISM >
    Remote Sensing Technology Center of Japan
    PASCO CORPORATION

    < PALSAR & AVNIR-2 >
    Remote Sensing Technology Center of Japan

    Information about ALOS-2

    For more information, please visit following URLs.

    Advance Land Observation Satellite-2 "DAICI-2" (ALOS-2)
    ALOS Research and Application Project of EORC, JAXA

    Information about CIRC

    For more information, please visit following URL.

    Compact Infrared Camera

    The data provision period of the satellite

    There are no operational information about satellite and instruments because this satellite has already finished observation.
    The data provision period of this satellite is as follows.

    •1996/11/01 - 1997/06/29

    The data provision period of the satellite

    There are no operational information about satellite and instruments because this satellite has already finished observation.
    The data provision period of this satellite is as follows.

    •2003/04/02 - 2003/10/24
    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.


    The data provision period of the satellite

    There are no operational information about satellite and instruments because this satellite has already finished observation.
    The data provision period of this satellite is as follows.

    •1992/04/15 - 1998/10/11

    The data provision period of the satellite

    There are no operational information about satellite and instruments because this satellite has already finished observation.
    The data provision period of this satellite is as follows.

    •1987/08/04 - 1995/11/21

    The data provision period of the satellite

    There are no operational information about satellite and instruments because this satellite has already finished observation.
    The data provision period of this satellite is as follows.

    •1987/08/04 - 1995/11/21

    GPM constellation satellites

    Only one satellite for the low-earth-orbit satellite like TRMM lowers the frequency of the observation. In the GPM mission, it cooperates with other satellites to overcome this weak point, and to achieve the frequent observation. The existing satellites carrying microwave imager or the microwave sounder around year 2014 configure GPM constellation satellites. The list of constellation satellites is shown below:



    GSMaP Website "JAXA Global rainfall Watch"


    The website for monitoring GSMaP.
  • https://sharaku.eorc.jaxa.jp/GSMaP/index.htm


  • 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.


    Information about AQUA and MODIS

    For more information, please visit following URLs.

    AQUA
    MODIS

    Information about TERRA and MODIS

    For more information, please visit following URLs.

    TERRA
    MODIS
    G-Portal provides the various helpful information,
    Operational Information, for our spacecraft and sensors,
    please check the below before search or retrieve our products.
    &nbsp;
    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).
    &nbsp;Each spacecraft provides their orbital information respectively. 


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