NIES GOSAT TANSO-CAI Level 3 Data Product Format Description

Transcription

1 NIESOSATPO00633 NIES OSAT TANSOCAI Level 3 Data Product Format Description Version 3.00 National Institute for Environmental Studies OSAT Project November 30, 206

2 Revision history Version Revised on Page Description Ver Sep. 202 Issued the CAI L3 data products in parts from "NIES OSAT Product Format Descriptions Version.70". In this version, the format of L3 NDVI data product has changed, the format of the other products (L3 global radiance distribution, L3 global reflectance distribution) have not changed. Listed the changes of L3 NDVI data product format from "NIES OSAT Product Format Descriptions Version.70" as below. ) Added the following datasets. (Table 52) /Data/NDVI/band2Reflectance /Data/NDVI/band3Reflectance /Data/NDVI/confidenceLevel /ancillary/cailbdatainformation/cailbdate /ancillary/cailbdatainformation/cailbpathnumber /ancillary/cailbdatainformation/cailbpixelnumber /ancillary/cailbdatainformation/cailblinenumber 2) Removed the following dataset. (Table 52) /Data/NDVI/pathNumber 3) Changed "Datatype" and "" of the following datasets. (Table 52) /Data/NDVI/NDVI 4) Changed "Descriptioin" of the following datasets. (Table 52) /attribute/intervallengthoflatitude /attribute/intervallengthoflongitude /attribute/numlatitude /attribute/numlongitude Ver May 203, 2 ) Added V0.00 in the product version of L3 global radiance distribution in Table. 2) Corrected to every 3 days from every 30 days in the file unit of L3 NDVI in Table 2. Ver Nov. 206 ) Changed the product version V02.00 in Table.

3 Table of Contents Introduction.... Outline....2 Data products and versions... 2 CAI Level 3 Data Products Description of CAI L3 data products List of CAI L3 data products and file naming convention HDF5 format Description of the HDF5 format HDF5 data types Array order definition L3 global radiance distribution Description of L3 global radiance distribution Dataset structure Specifications for the file format L3 global reflectance distribution Description of L3 global reflectance distribution Dataset structure Specifications for the file format L3 NDVI Description of L3 NDVI Rectangle definition Dataset structure Specifications for the file format i

4 Introduction. Outline The purpose of this document is to explain the format of the Level 3 data products that are generated by Thermal And Nearinfrared Sensor for carbon ObservationCloud and Aerosol Imager (TANSOCAI) onboard reenhouse gases Observing SATellite (OSAT) (hereafter abbreviated as CAI L3 data products) and that are distributed by the National Institute for Environmental Studies, Japan. The following chapters will provide the data for the users with the information on the file naming convention used in the OSAT data product line (in Chapter 2) and with the specifications of the file format of each CAI L3 data product (in Chapter 3 to 5)..2 Data products and versions The products and their versions described in this document are listed below (Table ). Table List of data products and versions explained in this document Product name Product version L3 global radiance distribution V02.00 L3 global reflectance distribution V02.00 L3 NDVI V02.00

5 2 CAI Level 3 Data Products 2. Description of CAI L3 data products The CAI L3 data products are the global distribution generated by the image data observed by TANSOCAI. Now, three CAI L3 data products are available on OSAT Interface ateway (UI). Those products are L3 global radiance distribution generated by the CAI LB+ data, L3 global reflectance distribution and L3 NDVI generated by the CAI LB data. The descriptions of each product are described in the following chapters. 2.2 List of CAI L3 data products and file naming convention Table 2 lists the CAI L3 data products. These data products are available in a HDF5 format. The L3 global radiance distribution, L3 global reflectance distribution, and L3 NDVI data products are categorized as standard products and are released to all the users. Table 2 List of CAI L3 data products Product code Product name Product category File unit Format File size TRCL L3 global radiance distribution Standard lobal (every 3 days) HDF5 00 MB TRCF L3 global reflectance distribution Standard lobal (every 3 days) HDF5 33 MB NDVI L3 NDVI Standard lobal (Lat. 30 Lon. 60 (every 3 days)) HDF5 50 MB 2

6 The file naming convention for the CAI L3 data product files is shown below (Figures 2 and 22). The four characters found between #29 and #32 are the product code that indicates the data product type (Table 2) O S A T T C A I Y Y Y Y M M D D y y y y m m d d _ 0 3 a b c d V M M N N. h 5 Satellite Sensor Observation start date Observation end date Processing level Product code Processing version Extenction Figure 2 File naming convention for CAI L3 data products O S A T T C A I Y Y Y Y M M D D y y y y m m d d _ 0 3 a b c d V M M N N Z Z Z. h 5 Satellite Sensor Observation start date Observation end date Processing level Product code Processing version Rectangle Extenction number Figure 2 File naming convention for L3 NDVI data product 22

7 2.3 HDF5 format 2.3. Description of the HDF5 format HDF5 is a file format that has a hierarchical structure. The structure of each data product is described in the following chapters. Refer to URL for details on the HDF5 format, library, tools and software. The version of the library used for the data products is stored in the following path: /lobal/md_metadata/distributioninfo/md_distribution/distributionformat/md_format/version HDF5 data types The data types contained in the CAI L3 data products are defined as below (Table 22). Table 22 HDF5 data types contained in the CAI L3 data products Type H5T_STRIN H5T_STD_I8LE H5T_STD_I6LE H5T_STD_U6LE H5T_STD_I32LE H5T_IEEE_F32LE Definition String with a length of byte or more Signed byte integer Signed 2byte integer Unsigned 2byte integer Signed 4byte integer 4byte real number Array order definition The size of the each element of an array is described in the C language, in accordance with the HDF5 standard. In case of a twodimensional array, therefore, it is defined as (row, line). 23

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9 3 L3 global radiance distribution 3. Description of L3 global radiance distribution L3 global radiance distribution product is generated from the TANSOCAI LB+ product acquired during the three consecutive observation days. This product is overlapped the CAI LB+ data in chronological order. OSAT goes around the globe in a subrecurrent orbit and covers the entire globe for three days. TANSOCAI LB+ products of path unit are prepared for each day. L3 global radiance distribution product is generated each date by using the CAI LB+ data for three observation days and shifted day by day. In this data product, radiances of band to band4 are put on 0.25 degrees lattices (2880x440 pixels) on the global map (equirectangular projection). 3.2 Dataset structure The following table summarizes the dataset structure of the L3 global radiance distribution data product. Table 3 Dataset structure of the L3 global radiance distribution No. Name Outline lobal The following items are included to describe the type, contents, etc. of the product. Metadata items compliant with JMP 2.0 Product file name Sensor name Processing level Version 2 attribute The following items are included to provide information related to the observation.. Solar zenith/azimuth angle Satellite zenith/azimuth angle 3 Data The following items are included to provide data on the product. The image of CAI L3 global radiance distribution 3

10 4 ancillary The following items are included to provide ancillary information related to the data processing. The granule ID of the CAI LB+ product Information on the data processing results 3.3 Specifications for the file format Table 32 shows the specifications of the file format of the L3 global radiance distribution data product. 32

11 Table 32 TANSOCAI L3 global radiance distribution Product Format roup roup / Dataset datatype Dataset name Description / Format lobal MD_Metadata identificationinfo MD_DataIdentification citation title date date abstract purpose status datetype resourceconstraints MD_Constraints uselimitation 64 0 descriptivekeywords MD_Keywords_0 keyword type MD_Keywords_02 keyword type 68 0 H5T_STRIN Title H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN 0 H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN Date Date type Abstract Purpose Status Limitation of users Keyword Type Keyword Type [TANSOCAI/OSAT L3 global radiance distribution (all pixels) product] [YYYYMMDD] Creation date of this product (UTC) [00]: Creation [Level 3 global radiance distribution (all pixels) generated from CAI level B+ data.] Description of the data [To provide global image of the Earth.] Explanation of the purpose of data creation [00]: Completed [Available to any users Only. / Available to any registered users] Conditions related to limitation of users [OSAT] [005]: Theme [TANSOCAI] [005]: Theme 33

12 Table 32 TANSOCAI L3 global radiance distribution Product Format roup roup / Dataset datatype Dataset name Description / Format MD_Keywords_03 keyword type geographicelement EX_eographicBoundingBox extenttypecode extentreferencesystem code language isocode 3 0 H5T_STRIN characterset topiccategory extent temporalelement EX_TemporalExtent extent beginend begin end westboundlongitude eastboundlongitude northboundlatitude southboundlatitude H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN Keyword Type File name Character set Topic category H5T_STRIN Start date and time H5T_STRIN H5T_STRIN H5T_STRIN End date and time Extent type code Code West bounding longitude East bounding longitude South bounding longitude North bounding longitude [Radiance] [005]: Theme [eng]: English [004]: UTF8 [007]: Environment [YYYYMMDDHHmmss] Start date and time (UTC) [YYYYMMDDHHmmss] End date and time (UTC) []: The data indicated in the following dataset of the "geographicelement" roup are inside the [WS84] [80.000] [80.000] [90.000] [90.000] 34

13 Table 32 TANSOCAI L3 global radiance distribution Product Format roup roup / Dataset datatype Dataset name Description / Format distributioninfo MD_Distribution distributionformat MD_Format transferoptions MD_DigitalTransferOptions online linkage fileidentifier language name version description 4 0 H5T_STRIN Format name 5 0 H5T_STRIN Format version 28 0 H5T_STRIN Link 5 0 H5T_STRIN Description 37 0 H5T_STRIN File identifier (ranule ID) [HDF5] [.6.5] [ [see abstract.] ranule ID ranule ID of the product isocode characterset hierarchylevel 3 0 H5T_STRIN Language Code 3 0 H5T_STRIN Character set 3 0 H5T_STRIN Hierarchy level [eng]: English [004]: UTF8 [005]: Header of the dataset contact organisationname 08 0 H5T_STRIN Organisation name [OSAT Project Office, Center for lobal Environmental Research, National Institute for role 3 0 H5T_STRIN Role Environmental Studies] [005]: Distributor 35

14 Table 32 TANSOCAI L3 global radiance distribution Product Format roup roup / Dataset datatype Dataset name Description / Format contactinfo phone voice facsimile H5T_STRIN H5T_STRIN Phone Facsimile [ ] [ ] address deliverypoint city administrativearea postalcode country electronicmailaddress H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN Delivery Point ZIP code 0 H5T_STRIN Country H5T_STRIN City Administrative area Electronic mail address [62 Onogawa] [Tsukubacity] [Ibaraki] [ ] [jpn] [gosatsupport@nies.go.jp] onlineresource linkage description hoursofservice H5T_STRIN H5T_STRIN H5T_STRIN Link Description Hours of service [ [NIES OSAT Project web site] [Automatic data distribution is available any time, for manual inquiries, 9:00 to 7:00 (Japan Standard Time) Monday through Friday except contactinstructions H5T_STRIN Contact instructions Japanese holidays.] [Contact Instruction: Contact by gosatsupport@nies.go.jp / If there are any questions, please contact us by .] 36

15 Table 32 TANSOCAI L3 global radiance distribution Product Format roup roup / Dataset datatype Dataset name Description / Format datestamp 0 0 metadatastandardname 3 0 metadatastandardversion 3 0 H5T_STRIN H5T_STRIN H5T_STRIN Date stamp Name of metadata standards Version of metadata standards [YYYYMMDD] Creation date of this product (UTC) [JMP] [2.0] metadata operationlevel 2 0 H5T_STRIN productcode 4 0 H5T_STRIN productname 44 0 H5T_STRIN numband 0 H5T_STRIN productversion 6 0 H5T_STRIN satellitename 5 0 H5T_STRIN sensorname 9 0 H5T_STRIN observationmode 4 0 H5T_STRIN Process level Product code Product name Number of bands Product version Satellite name Sensor name Observation mode [L3] [TRCL] [L3 global radiance distribution (all pixels)] [4]: Number of band stored [VXX.XX] Product version [OSAT] [TANSOCAI] [OBSM] 37

16 Table 32 TANSOCAI L3 global radiance distribution Product Format roup roup / Dataset datatype Dataset name Description / Format attribute intervallengthoflatitude numlatitude intervallengthoflongitude numlongitude starttime endtime unit unit H5T_STRIN 0 3 H5T_STRIN unit unit deg deg H5T_IEEE_F32LE H5T_STD_I6LE H5T_IEEE_F32LE H5T_STD_I6LE H5T_STRIN H5T_STRIN Lattice spacing in the lat. direction Number of lattices in the lat. direction Lattice spacing in the lon. direction Number of lattices in the lon. direction Start date and time of the observarion End date and time of the observarion [0.25] [440] [0.25] [2880] [YYYYMMDD hh:mm:ss.sss] Frame center time at the observation start frame [YYYYMMDD hh:mm:ss.sss] Frame center time at the observation end frame mapprojection projectionmethod 3 0 H5T_STRIN Map projection method [EQR]:Equirectangular Projection sun azimuth 2 numlatitude, unit 3 H5T_STRIN unit deg H5T_IEEE_F32LE Solar azimuth angle Solar azimuth angle of each lattice point, numlongitude validrange 2 H5T_IEEE_F32LE valid range 0.0,360.0 measured clockwise from north, is stored. zenith 2 numlatitude, unit 3 H5T_STRIN unit deg H5T_IEEE_F32LE Solar zenith angle Solar zenith angle of each lattice points is stored. numlongitude validrange 2 H5T_IEEE_F32LE valid range 0.0,80.0 satellite azimuth 2 numlatitude, unit 3 H5T_STRIN unit deg H5T_IEEE_F32LE Satellite azimuth angle Satellite azimuth angle of each lattice point is numlongitude validrange 2 H5T_IEEE_F32LE valid range 0.0,360.0 stored. zenith 2 numlatitude, unit 3 H5T_STRIN unit deg H5T_IEEE_F32LE Satellite zenith angle Satellite zenith angle of each lattice point is numlongitude validrange 2 H5T_IEEE_F32LE valid range 0.0,80.0 stored. 38

17 Table 32 TANSOCAI L3 global radiance distribution Product Format roup roup / Dataset datatype Dataset name Description / Format Data bandimage 2 numlatitude, unit 6 H5T_STRIN unit W/m^2/sr H5T_STD_U6LE Band radiance data The suffix number is defined as latitude, numlongitude /microm validrange 2 H5T_STD_U6LE valid range,65535 range 2 H5T_IEEE_F32LE radiance range 2,680 longitude, in that order. DN value of Band lattice point is stored. (Minumum and Maximum value when converted into the radiance) dummy H5T_STD_U6LE invalid value 0 radiancescale H5T_IEEE_F32LE scale radianceoffset H5T_IEEE_F32LE offset band2image 2 numlatitude, unit 6 H5T_STRIN unit W/m^2/sr H5T_STD_U6LE Band 2 radiance data The suffix number is defined as latitude, numlongitude /microm validrange 2 H5T_STD_U6LE valid range,65535 range 2 H5T_IEEE_F32LE radiance range 2,680 longitude, in that order. DN value of Band 2 lattice point is stored. (Minumum and Maximum value when converted into the radiance) dummy H5T_STD_U6LE invalid value 0 radiancescale H5T_IEEE_F32LE scale radianceoffset H5T_IEEE_F32LE offset

18 Table 32 TANSOCAI L3 global radiance distribution Product Format roup roup / Dataset datatype Dataset name Description / Format band3image 2 numlatitude, unit 6 H5T_STRIN unit W/m^2/sr H5T_STD_U6LE Band 3 radiance data The suffix number is defined as latitude, numlongitude /microm validrange 2 H5T_STD_U6LE valid range,65535 range 2 H5T_IEEE_F32LE radiance range 2,680 longitude, in that order. DN value of Band 3 lattice point is stored. (Minumum and Maximum value when converted into the radiance) dummy H5T_STD_U6LE invalid value 0 radiancescale H5T_IEEE_F32LE scale radianceoffset H5T_IEEE_F32LE offset band4image 2 numlatitude, unit 6 H5T_STRIN unit W/m^2/sr H5T_STD_U6LE Band 4 radiance data The suffix number is defined as latitude, numlongitude /microm validrange 2 H5T_STD_U6LE valid range,65535 range 2 H5T_IEEE_F32LE radiance range 2,680 longitude, in that order. DN value of Band 4 lattice point is stored. (Minumum and Maximum value when converted into the radiance) dummy H5T_STD_U6LE invalid value 0 radiancescale H5T_IEEE_F32LE scale radianceoffset H5T_IEEE_F32LE offset ancillary procstatusinformation CAILBPDataInformation CAILBPranuleID 3 0 H5T_STRIN Information on data processing status arbitrary 0 H5T_STRIN ranule ID ranule ID corresponding to the source CAI LB+ data [N/A] 30

19 4 L3 global reflectance distribution 4. Description of L3 global reflectance distribution L3 global reflectance distribution product is generated by collecting the image data with minimum reflectance from the TANSOCAI Level B data for 30 days (0 recurrent cycles). At first, the pixel of the minimum reflectance of band2 is specified by using the 30 days data. And then, by using the observation date corresponding to the specified pixel, the reflectance of band, band3, and band4 are selected. This product is the suitable for examining the feature of the ground surface, because the clear sky observation (the ground surface with the low reflectance of band 2) is included and cloud observation (the cloud area with the high reflectance of band2) is removed by collecting the image data for 30 days. This product is generated every 3 days by using the image data for 30 days and shifted three days. The data of the land area and the ocean area with reflectance of band to band4 are processed respectively and put on 0.25 degrees lattices (2880x440 pixels) on the global map (equirectangular projection). 4.2 Dataset structure The following table summarizes the dataset structure of the L3 global reflectance distribution data product. Table 4 Dataset structure of the L3 global reflectance distribution data product No. Name Outline lobal The following items are included to describe the type, contents, etc. of the product. Metadata items compliant with JMP 2.0 Product file name Sensor name Processing level Version 2 attribute The following items are included to provide information related to the observation. Lattice spacing Start date of this data 4

20 End date of this data 3 Data The following items are included to provide data on the product. CAI L3 global reflectance distribution 4 ancillary The following items are included to provide ancillary information related to the data processing. Information on the data processing results 4.3 Specifications for the file format Table 42 shows the specifications of the file format of the L3 global reflectance distribution data product. 42

21 Table 42 TANSOCAI L3 global reflectance distribution Product Format roup roup / Dataset Datatype Dataset name Description / Format lobal MD_Metadata identificationinfo MD_DataIdentification citation title 70 0 date date 0 0 abstract datetype H5T_STRIN H5T_STRIN Title H5T_STRIN Date H5T_STRIN Date type Abstract [TANSOCAI/OSAT L3 global reflectance distribution (clear sky) product] [YYYYMMDD] Creation date of this product (UTC) [00]: Creation [Level 3 global reflectance distribution (clear sky) generated from CAI level B data.] purpose H5T_STRIN Purpose Description of the data [To provide global cloud free image of the earth.] status resourceconstraints MD_Constraints uselimitation descriptivekeywords MD_Keywords_0 keyword 3 0 H5T_STRIN Status 65 type H5T_STRIN H5T_STRIN H5T_STRIN Limitation of users Keyword Type Explanation of the purpose of data creation [00]: Completed [Available to any users Only. / Available to any registered users.] Conditions related to limitation of users [OSAT] [005]: Theme 43

22 Table 42 TANSOCAI L3 global reflectance distribution Product Format roup roup / Dataset Datatype Dataset name Description / Format MD_Keywords_02 keyword 9 0 H5T_STRIN Keyword type 3 0 H5T_STRIN Type MD_Keywords_03 keyword 0 H5T_STRIN type MD_Keywords_04 keyword 0 0 type 3 0 language isocode characterset topiccategory 3 0 H5T_STRIN 3 0 Keyword Type H5T_STRIN Keyword H5T_STRIN H5T_STRIN Type File name 3 0 H5T_STRIN Character set 3 0 H5T_STRIN Topic category extent temporalelement EX_TemporalExtent extent beginend begin 0 0 H5T_STRIN end 0 0 geographicelement EX_eographicBoundingBox extenttypecode 0 H5T_STRIN H5T_STRIN Start date End date Extent type code extentreferencesystem code 5 0 H5T_STRIN Code (Identifier for the geographical reference system used.) [TANSOCAI] [005]: Theme [Reflectance] [005]: Theme [Cloud Free] [005]: Theme [eng]: English [004]: UTF8 [007]: Environment [YYYYMMDD] Start date of observation data (UTC) [YYYYMMDD] End date of observation data (UTC) []: Inside [WS84] 44

23 Table 42 TANSOCAI L3 global reflectance distribution Product Format roup roup / Dataset Datatype Dataset name Description / Format westboundlongitude 8 0 H5T_STRIN West bounding longitude [80.000] Western edge latitude of the westernmost mesh is stored. eastboundlongitude 8 0 H5T_STRIN East bounding longitude [ ] Eastern edge latitude of the easternmost mesh is stored. distributioninfo MD_Distribution distributionformat MD_Format name southboundlatitude 7 0 H5T_STRIN South bounding latitude northboundlatitude 4 version 5 0 transferoptions MD_DigitalTransferOptions online linkage description 7 0 H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN Link North bounding latitude Format name Format version H5T_STRIN Description fileidentifier 37 0 H5T_STRIN File identifier (ranule ID) language isocode 3 0 H5T_STRIN Language code characterset 3 0 H5T_STRIN Character set hierarchylevel 3 0 H5T_STRIN Hierarchy level [90.000] Southern edge latitude of the southernmost mesh is stored. [ ] Northern edge latitude of the northernmost mesh is stored. [HDF5] [.6.5] [ [see abstract.] ranule ID ranule ID of the product [eng]: English [004]: UTF8 [005]: Header of the dataset 45

24 Table 42 TANSOCAI L3 global reflectance distribution Product Format roup roup / Dataset Datatype Dataset name Description / Format contact organisationname 08 0 role 3 0 H5T_STRIN H5T_STRIN contactinfo phone voice 5 0 H5T_STRIN Phone facsimile 5 address deliverypoint 2 0 Organisation name Role 0 H5T_STRIN Facsimile H5T_STRIN city 2 0 H5T_STRIN City administrativearea postalcode country electronicmailaddress 24 0 onlineresource linkage description hoursofservice contactinstructions Delivery point H5T_STRIN Administrative area H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN ZIP code Country Electronic mail address Link Description Hours of service Contact instructions [OSAT Project Office, Center for lobal Environmental Research, National Institute for Environmental Studies] [005]: Distributor [ ] [ ] [62 Onogawa] [Tsukubacity] [Ibaraki] [ ] [jpn] [gosatsupport@nies.go.jp] [ [NIES OSAT Project web site] [Automatic data distribution is available any time, for manual inquiries, 9:00 to 7:00 (Japan Standard Time) Monday through Friday except Japanese holidays.] [Contact Instruction: Contact by gosatsupport@nies.go.jp / If there are any questions, please contact us by .] 46

25 Table 42 TANSOCAI L3 global reflectance distribution Product Format roup roup / Dataset Datatype Dataset name Description / Format datestamp 0 0 H5T_STRIN Date stamp metadatastandardname 3 0 H5T_STRIN Name of metadata standards metadatastandardversion 3 0 H5T_STRIN Version of metadata standards metadata (except for JMP2.0) operationlevel 2 0 H5T_STRIN Processing level productcode productname 4 0 H5T_STRIN Product code 46 0 H5T_STRIN Product name numband 0 H5T_STRIN Band number productversion 6 0 H5T_STRIN Product version satellitename 5 0 H5T_STRIN Satellite name sensorname 9 0 H5T_STRIN observationmode 4 0 H5T_STRIN Observation mode attribute intervallengthoflatitude unit 3 H5T_STRIN unit deg numlatitude 0 intervallengthoflongitude unit 3 H5T_STRIN unit deg numlongitude centrallatitudeofstartingrid unit 0 3 H5T_STRIN unit H5T_IEEE_F32LE Sensor name Lattice spacing in the lat. direction H5T_STD_I32LE Number of lattices in the lat. direction H5T_IEEE_F32LE Lattice spacing in the lon. direction H5T_STD_I32LE Number of lattices in the lon. direction deg H5T_IEEE_F32LE Center latitude of the starting lattices [YYYYMMDD] Creation date of metadata (UTC) [JMP] [2.0] [L3] [TRCF] [L3 global reflectance distribution (clear sky)] [4] [VXX.XX] Product version [OSAT] [TANSOCAI] [OBSM] [0.25] [440] [0.25] [2880] Center latitude of lattices y=0 in the 2Darray[y][x] of the reflectance data is stored. centrallongitudeofstartingrid unit 3 H5T_STRIN unit deg H5T_IEEE_F32LE Center longitude of the Center longitude of lattices x=0 in the 2Darray[y][x] starting lattices of the reflectance data is stored. startdate 0 0 H5T_STRIN Start date of this data [YYYYMMDD] enddate 0 0 H5T_STRIN End date of this data [YYYYMMDD] 47

26 Table 42 TANSOCAI L3 global reflectance distribution Product Format roup roup / Dataset Datatype Dataset name Description / Format Data reflectance land bandreflectance 2 numlatitude, unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band ground reflectance Band ground reflectance data of the each lattice is numlongitude longname 7 H5T_STRIN long name band reflectance data stored. band2reflectance 2 numlatitude, invalidvalue H5T_IEEE_F32LE invalid value unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band2 ground reflectance Band2 ground reflectance data of the each lattice is numlongitude longname 7 H5T_STRIN long name band2 reflectance data stored. band3reflectance 2 numlatitude, invalidvalue H5T_IEEE_F32LE invalid value unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band3 ground reflectance Band3 ground reflectance data of the each lattice is numlongitude longname 7 H5T_STRIN long name band3 reflectance data stored. band4reflectance 2 numlatitude, invalidvalue H5T_IEEE_F32LE invalid value unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band4 ground reflectance Band4 ground reflectance data of the each lattice is numlongitude longname 7 H5T_STRIN long name band4 reflectance data stored. invalidvalue H5T_IEEE_F32LE invalid value sea bandreflectance 2 numlatitude, unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band water reflectance Band water reflectance data of the each lattice is numlongitude longname 7 H5T_STRIN long name band reflectance data stored. band2reflectance 2 numlatitude, invalidvalue H5T_IEEE_F32LE invalid value unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band2 water reflectance Band2 water reflectance data of the each lattice is numlongitude longname 7 H5T_STRIN long name band2 reflectance data stored. band3reflectance 2 numlatitude, invalidvalue H5T_IEEE_F32LE invalid value unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band3 water reflectance Band3 water reflectance data of the each lattice is numlongitude longname 7 H5T_STRIN long name band3 reflectance data stored. band4reflectance 2 numlatitude, invalidvalue H5T_IEEE_F32LE invalid value unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band4 water reflectance Band4 water reflectance data of the each lattice is numlongitude longname 7 H5T_STRIN long name band4 reflectance data stored. invalidvalue H5T_IEEE_F32LE invalid value ancillary procstatusinformation 3 0 H5T_STRIN Information of data processing status [N/A] 48

27 5 L3 NDVI 5. Description of L3 NDVI L3 Normalized Difference Vegetation Index (NDVI hereinafter) product is calculated by using the reflectance of band2 and band3 generated from the CAI LB data for the 30 days (0 recurrent cycles) radiance data. The reflectance is generated by the same method of L3 global reflectance distribution except for the grid size. This product is generated every 3 days by using the CAI LB data for 30 days and shifted three days. Since the data volume is very large, the global data is divided into 36 rectangles of 30 deg. in latitude by 60 deg. in longitude as the product. This product (rectangle) is composed of /30 degrees lattices (800x900 pixels) on the global map (equirectangular projection). The clear confidence level is also stored in this product as the quality information of the NDVI. The detailed descriptions are found in Algorithm Theoretical Basis Document (ATBD) for TANSOCAI L3 NDVI Product, and therefore not covered herein. 5.2 Rectangle definition Shown in Figure 5 are the rectangles and the rectangle identification numbers. Each rectangle is separated, in longitudinal direction, by 60 deg. starting 25deg. W, and, in latitudinal direction, by 30 deg. starting from the 90 deg. N. For the area having the latitude greater than 60 deg. S (rectangles #3 through #36), these rectangle files are not available. Figure 5 Definition of the number of each rectangle (Note: The products of the rectangles #3 through #36 are not available.) 5

28 5.3 Dataset structure The following table summarizes the dataset structure of the L3 NDVI data product. Table 5 Dataset structure of the L3 NDVI data product No. Name Outline lobal The following items are included to describe the type, contents, etc. of the product. Metadata items compliant with JMP 2.0 Product file name Sensor name Processing level Version 2 attribute The following items are included to provide information related to the observation. Lattice spacing Start date of this data End date of this data 3 Data The following items are included to provide data on the product. CAI L3 NDVI 4 ancillary The following items are included to provide ancillary information related to the data processing. Information on the data processing results CAI LB data information 5.4 Specifications for the file format Table 52 shows the specifications of the file format of the L3 NDVI data product. 52

29 Table 52 TANSOCAI L3 NDVI Product Format roup roup / Dataset Datatype Dataset name Description / Format lobal MD_Metadata identificationinfo MD_DataIdentification citation title 3 0 H5T_STRIN Title [TANSOCAI/OSAT L3 NDVI product] date date 0 0 H5T_STRIN Date datetype 3 0 H5T_STRIN Date type abstract H5T_STRIN Abstract [YYYYMMDD] Creation date of this product (UTC) [00]: Creation [Level 3 Normalized Difference Vegetation Index (NDVI) generated from CAI level B data.] purpose H5T_STRIN Purpose Description of the data [To identify vegetated area and their condition.] status 3 0 H5T_STRIN Status resourceconstraints MD_Constraints uselimitation descriptivekeywords MD_Keywords_0 keyword H5T_STRIN type H5T_STRIN Keyword H5T_STRIN Limitation of users Type Explanation of the purpose of data creation [00]: Completed [Available to any users Only. / Available to any registered users.] Conditions related to limitation of users [OSAT] [005]: Theme 53

30 Table 52 TANSOCAI L3 NDVI Product Format roup roup / Dataset Datatype Dataset name Description / Format MD_Keywords_02 keyword 9 0 H5T_STRIN Keyword type 3 0 H5T_STRIN MD_Keywords_03 keyword 38 0 H5T_STRIN Keyword type 3 0 language isocode 3 0 characterset 3 0 topiccategory 3 0 H5T_STRIN H5T_STRIN H5T_STRIN H5T_STRIN Type Type File name Character set Topic category extent temporalelement EX_TemporalExtent extent beginend begin 0 0 H5T_STRIN Start date end 0 0 H5T_STRIN geographicelement EX_eographicBoundingBox extenttypecode 0 H5T_STRIN Extent type code extentreferencesystem code 5 0 H5T_STRIN Code (Identifier for the geographical reference system used.) westboundlongitude 8 0 H5T_STRIN West bounding longitude End date [TANSOCAI] [005]: Theme [Normalized Difference Vegetation Index] [005]: Theme [eng]: English [004]: UTF8 [007]: Environment [YYYYMMDD] Start date of observation data (UTC) [YYYYMMDD] End date of observation data (UTC) []: Inside [WS84] [snnn.nnn] Western edge latitude of the westernmost mesh is stored. s: Plus (+) for east and minus () for west of reenwich, n: Numerical value 54

31 Table 52 TANSOCAI L3 NDVI Product Format roup roup / Dataset Datatype Dataset name Description / Format eastboundlongitude 8 0 H5T_STRIN East bounding longitude southboundlatitude 7 0 H5T_STRIN South bounding latitude northboundlatitude 7 0 distributioninfo MD_Distribution distributionformat MD_Format name 4 H5T_STRIN 0 H5T_STRIN North bounding latitude Format name version 5 0 H5T_STRIN Format version transferoptions MD_DigitalTransferOptions online linkage 28 0 H5T_STRIN Link description 5 0 H5T_STRIN Description fileidentifier 40 0 H5T_STRIN File identifier (ranule ID) language isocode 3 0 H5T_STRIN Language code characterset 3 hierarchylevel 0 H5T_STRIN Character set 3 0 H5T_STRIN Hierarchy level [snnn.nnn] Eastern edge latitude of the easternmost mesh is stored. s: Plus (+) for east and minus () for west of reenwich, n: Numerical value [snn.nnn] Southern edge latitude of the southernmost mesh is stored. s: Plus (+) for north, and minus () for south of the equator, n: Numerical value [snn.nnn] Northern edge latitude of the northernmost mesh is stored. s: Plus (+) for north, and minus () for south of the equator, n: Numerical value [HDF5] [.6.5] [ [see abstract.] ranule ID ranule ID of the product [eng]: English [004]: UTF8 [005]: Header of the dataset 55

32 Table 52 TANSOCAI L3 NDVI Product Format roup roup / Dataset Datatype Dataset name Description / Format contact organisationname 08 0 H5T_STRIN Organisation name role 3 0 H5T_STRIN contactinfo phone voice facsimile address deliverypoint 5 0 H5T_STRIN Phone H5T_STRIN city 2 0 H5T_STRIN City administrativearea 7 0 Role Facsimile H5T_STRIN Delivery point H5T_STRIN Administrative area postalcode 8 0 H5T_STRIN ZIP code country 3 0 H5T_STRIN Country electronicmailaddress 24 0 H5T_STRIN Electronic mail address onlineresource linkage description hoursofservice H5T_STRIN H5T_STRIN H5T_STRIN contactinstructions H5T_STRIN Link Description Hours of service Contact instructions [OSAT Project Office, Center for lobal Environmental Research, National Institute for Environmental Studies] [005]: Distributor [ ] [ ] [62 Onogawa] [Tsukubacity] [Ibaraki] [ ] [jpn] [gosatsupport@nies.go.jp] [ [NIES OSAT Project web site] [Automatic data distribution is available any time, for manual inquiries, 9:00 to 7:00 (Japan Standard Time) Monday through Friday except Japanese holidays.] [Contact Instruction: Contact by gosatsupport@nies.go.jp / If there are any questions, please contact us by .] 56

33 Table 52 TANSOCAI L3 NDVI Product Format roup roup / Dataset Datatype Dataset name Description / Format datestamp 0 0 H5T_STRIN Date stamp metadatastandardname 3 0 H5T_STRIN Name of metadata standards metadatastandardversion 3 0 H5T_STRIN Version of metadata standards metadata operationlevel 2 0 H5T_STRIN Processing level productcode 4 0 H5T_STRIN Product code productname 7 0 H5T_STRIN Product name productversion 6 0 H5T_STRIN Product version satellitename 5 0 H5T_STRIN Satellite name sensorname 9 0 H5T_STRIN Sensor name attribute area 3 0 H5T_STRIN Rectangle number [YYYYMMDD] Creation date of metadata (UTC) [JMP] [2.0] [L3] [NDVI] [L3 NDVI] [VXX.XX] Product version [OSAT] [TANSOCAI] [00]~[036] startdate 0 0 H5T_STRIN Start date of the observation [YYYYMMDD] enddate 0 0 H5T_STRIN End date of the observation intervallengthoflatitude unit 3 H5T_STRIN unit deg H5T_IEEE_F32LE Lattice spacing in the lat. Direction numlatitude 0 H5T_STD_I32LE Number of lattices in the lat. direction intervallengthoflongitude unit 3 H5T_STRIN unit deg H5T_IEEE_F32LE Lattice spacing in the lon. Direction numlongitude 0 H5T_STD_I32LE Number of lattices in the lon. Direction [YYYYMMDD] [ ] [900] [ ] [800] 57

34 Table 52 TANSOCAI L3 NDVI Product Format roup roup / Dataset Datatype Dataset name Description / Format Data NDVI NDVI 2 numlatitude, unit 4 H5T_STRIN unit none H5T_IEEE_F32LE NDVI (Normalizeddifference NDVI value of each mesh is stored. numlongitude validrange 2 H5T_IEEE_F32LE valid range 0.2,.0 vegetation longname 38 H5T_STRIN long name Normalized Difference Vegetation Index index) invalidvalue H5T_IEEE_F32LE invalid value 0.3 band2reflectance 2 numlatitude, unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band2 reflectance Band2 reflectance value of each mesh is stored. numlongitude validrange 2 H5T_IEEE_F32LE valid range 0.0,.0 After the pixel of the minimum reflectance of longname 7 H5T_STRIN long name Band2 Reflectance band2 for each mesh is specified by using the 0 recurrent cycles (30 days) data, the atmospheric correction is applied for each mesh. invalidvalue H5T_IEEE_F32LE invalid value 0.3 band3reflectance 2 numlatitude, unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Band3 reflectance Band3 reflectance value of each mesh is stored. numlongitude validrange 2 H5T_IEEE_F32LE valid range 0.0,.0 The data corresponding to the selected longname 7 H5T_STRIN long name Band3 Reflectance observation date of minimum reflectance of band2 is stored. invalidvalue H5T_IEEE_F32LE invalid value 0.3 confidencelevel 2 numlatitude, unit 4 H5T_STRIN unit none H5T_IEEE_F32LE Clear sky confidence level Clear sky confidence level data (:clear sky, numlongitude validrange 2 H5T_IEEE_F32LE valid range 0.0,.0 0:cloudy) on pixels where Band3 reflectance is longname 27 H5T_STRIN long name integrated confidence level calculated. invalidvalue H5T_IEEE_F32LE invalid value 0.3 ancillary procstatusinformation 3 0 H5T_STRIN Information of data processing status [N/A] CAILBDataInformation CAILBDate 2 numlatitude, invalidvalue H5T_STD_I32LE invalid value H5T_STD_I32LE CAI LB date Observation date of the CAI LB data numlongitude CAILBPathNumber 2 numlatitude, invalidvalue H5T_STD_I8LE invalid value H5T_STD_I8LE CAI LB path number Path number of the CAI LB data numlongitude CAILBPixelNumber 2 numlatitude, invalidvalue H5T_STD_I6LE invalid value H5T_STD_I6LE CAI LB pixel number Pixel number of the CAI LB data numlongitude CAILBLineNumber 2 numlatitude, invalidvalue H5T_STD_I32LE invalid value H5T_STD_I32LE CAI LB line number Line number of the CAI LB data numlongitude 58