1
GPM Ground System Overview and Mission Data Flow Tracking and Data Relay Satellite System (TDRSS) provides forward link and return link services for GPM command transmission to the satellite and telemetry data receiving from the satellite. The TDRSS Ground Terminal at White Sands interfaces with Mission Operations Center (MOC) at NASA/Goddard Space Flight Center (GSFC) to receive commands and delivers telemetry and to exchange schedule, status, and service control information via NASA Integrated Services Network (NISN). NASA/MOC receives telemetry from space-ground link, and performs protocol processing to close space/ground file delivery protocol (CCSDS File Delivery Protocol: CFDP), then to deliver 5-minute duration science instrument, housekeeping files, and ancillary data to the Precipitation Processing System (PPS). JAXA GPM Mission Operation System (GPM-MOS) in Tsukuba Space Center receives these GPM mission data through NASA/PPS. These data flows are shown in Figure 1. In JAXA, GPM-MOS produce DPR and GSMaP products in near-real time and production to deliver them via JAXA Earth observation satellite data distribution system named as “G-Portal”. And the other US-Japan Joint GPM standard products are also available from G-Portal. GPM product list is shown in Table 1. GPM Product Latency DPR science data will be dumped once or twice per orbit by TDRSS-SA (TDRSS Single Access) 2.3 Mbps. On the other hand, the GMI science data will be dumped continuously by TDRSS-MA (TDRSS Multiple Access) 230 kbps link in addition to SA passes, which improves data latency for end users. By the TDRSS access, automatic ground system operations and performance improvement of ground system processing and network communication throughput, the target of GPM data latency is much better than the Tropical Rainfall Measuring Mission (TRMM). The target and results are shown in Table 2. JAXA GPM Mission Operation system overview and GPM data distribution from G-Portal Author: Tomomi Nio, Toshiyuki Konishi, Norio Saito, Mitsuhiko Fuda, Naoaki Ikeda, Akari Yoneyama, Yoko Fujita and Yousuke Ikehata Mission Operations System office of Space applications mission directorate (MOSS), Japan Aerospace Exploration Agency (JAXA) GPM Ground System Overview and Data Flow Table 1 : GPM Product List Earth Observation Data Distribution from JAXA 10th GSIM, 1 June 2011 GPM Core Observatory GPM science teams & end users Instrument Data Science Data White Sands Ground Station Command, Telemetry Instrument Data TDRSS Partner Ground Systems Planned/Existing Spacecraft Partner Constellation Spacecraft NASA Precipitation Processing System (PPS) Instrument Data NASA Mission Operation Center(MOC) JAXA Mission Operation System (MOS) RF Communications -realtime telemetry -stored telemetry (5 min file) : CCSDS File Delivery Protocol (CFDP) S-band TDRSS MA RTN @ 230 Kbps S-band TDRSS SA RTN @ 2.3 Mbps STORM Products GPM (Sept.-Oct. average time/ archived %) TRMM (July 8-14, 1 week average) GMI/TMI L1B GMI L1B-rt: 21 min, 99.6% (requirement:1 hr after observation, 90% of the time) TMI 1B11-rt: 2 hr 37min DPR/PR L2 DPR L2-rt: 1 hr 10 min, 99.2% (requirement:3 hr after observation) PR 2A25-rt: 2 hr 38 min DPR/GMI COMB L2 1 hr 20 min, 98.9% (requirement:3 hr after observation, 90% of the time) N/A Figure 1 : GPM Ground System Overview and GPM Mission Data Flow (C)1. Search by physical quantities 2. Select period and region 3. View result (A) Users can search products by physical quantities or satellites/sensors. (B)Users can directly get products by sftp. Data Utilization Information For data usage, data format specification and notice/caveats on data are available linked from G-Portal. When access G-Portal website like in Figure 2-(A), there is a link for “operation information”. GPM mission provides Product List: User can see which data is available, and which product version are latest one. Data document: Uer can get format specification, ATBD, data utilization handobook. GPM missing data list: Users have to take care to usage of data in commissioning phase for off-nominal data. Tool: I/O toolkit and Viewer (PPS THOR) is available. Figure 2: G-Portal captures (A) web home page (B) sftp direct get image(C) steps of search & download Processing Level Product [Product Identifier/ Algorithm Key] Key Parameters File coverage Latest Product Version 1 KuPR L1B [DUB] Received Power GPM orbit (Gorbit*) Ver. 03B KaPR L1B [DAB] Received Power Gorbit Ver. 03B GMI L1B [G1B] Brightness Temperature (Tb) Gorbit Ver. 03B GMI L1C [G1C] Brightness Temperature (Tb) Gorbit Ver. 03B Constellation L1C Inter-calibrated Brightness Temperature (Tb) 1 orbit Ver. 02A, Ver. 03A for AMSR2 2 KuPR L2 [DU2] Reflectivities, 3D Precipitation Gorbit Ver. 03B KaPR L2 [DA2] Reflectivities, 3D Precipitation Gorbit Ver. 03B DPR L2 [DD2] Dual Frequency Retrievals, 3D precipitation Gorbit Ver. 03B GMI L2 [GL2] Precipitation, Total Precipitable Water Gorbit Ver. 03C DPR-GMI Comb L2 [CL2] DPR-GMI retrieval. 3D Precipitation Gorbit Ver. 03C 3 DPR L3 Daily (TEXT) [D3D] Precipitation 0.1°x 0.1° Daily Ver. 03C DPR L3 Daily(HDF5) [D3Q] Precipitation 0.25° x 0.25° Daily DPR L3 Monthly [D3M] Precipitation 0.25° x 0.25° Monthly GMI L3 Monthly [GL3] Precipitation 0.25° x 0.25° Monthly Ver. 03C DPR-GMI Comb L3 [CL3] Precipitation 0.25° x 0.25° Monthly Ver. 03C GSMaP Hourly (TEXT) [MCT] Precipitation including retrievals from partner microwave sensors; -GPM/GMI (2014.3.14~) -TRMM/TMI -DMSP-F16/SSMIS -DMSP-F17,18/SSMIS -GCOM-W/AMSR2 -METOP-A,B/AMSU-A, MHS * (No METOP-A/MHS data 3/27- 5/20) -NOAA-18,19/AMSU-A, MHS 0.1°x 0.1° Hourly Ver. 03C GSMaP Hourly (HDF5) [MCH] 0.1°x 0.1° Hourly GSMaP Monthly [MCM] 0.1°x 0.1° Monthly Auxiliary Data (from JMA) Environmental data extracted KuPR swath [DU2/ENV] Temperature, Air Pressure, Cloud Water Vapor, Liquid Water Gorbit Ver. 03B Environmental data extracted KaPR swath [DA2/ENV] Temperature, Air Pressure, Cloud Water Vapor, Liquid Water Gorbit Ver. 03B Environmental data extracted DPR swath [DD2/ENV] Temperature, Air Pressure, Cloud Water Vapor, Liquid Water Gorbit Ver. 03B * Gorbit is the GPM orbit calculated from the southern most point back to the southern most point for standard product. Near-Real-Time Product is also available except for daily or monthly products. The scene coverage of L1-L2 products are depending on the instrument mission data donwlink. Table 2 : GPM Data Latency G-Portal Overview G-Portal is the multi-mission dissemination infrastructure for JAXA Earth Observation Satellites including TRMM, GPM, GOSAT, ADEOS, ADEOS-II, etc. G-Portal can disseminate products on internet and without charge, except for high resolution products and/or commercial based products as ALOS , and ALOS-2 which will be coming soon. User can get products in two ways. (A)Users can search products by physical quantities and by satellites/sensors and to get selected products with thumbnails and browses. (B)Users also can obtain products by sftp. G-Portal had opened from Feb. 28, 2013, starting with TRMM and past satellites data, and GPM data was released to the public on Sep. 2, 2014. (A) https://www.gportal.jaxa.jp and (B) sftp.gportal.jaxa.jp And the catalogue data is also disseminated via CATS-I (Catalogue Transfer Service - Interface). http://catsi.jaxa.jp HELPDESK You can contact us!! Questions about GPM mission data [email protected] How to get JAXA’s EO data [email protected]

Overview and Status of JAXA Mission Operation Systemipwg/meetings/tsukuba-2014/posters/P3-10_Nio.pdf · of data in commissioning phase for off-nominal data. • Tool: I/O toolkit

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Page 1: Overview and Status of JAXA Mission Operation Systemipwg/meetings/tsukuba-2014/posters/P3-10_Nio.pdf · of data in commissioning phase for off-nominal data. • Tool: I/O toolkit

GPM Ground System Overview and Mission Data Flow Tracking and Data Relay Satellite System (TDRSS) provides forward link and return link services for GPM command transmission to the satellite and telemetry data receiving from the satellite. The TDRSS Ground Terminal at White Sands interfaces with Mission Operations Center (MOC) at NASA/Goddard Space Flight Center (GSFC) to receive commands and delivers telemetry and to exchange schedule, status, and service control information via NASA Integrated Services Network (NISN). NASA/MOC receives telemetry from space-ground link, and performs protocol processing to close space/ground file delivery protocol (CCSDS File Delivery Protocol: CFDP), then to deliver 5-minute duration science instrument, housekeeping files, and ancillary data to the Precipitation Processing System (PPS). JAXA GPM Mission Operation System (GPM-MOS) in Tsukuba Space Center receives these GPM mission data through NASA/PPS. These data flows are shown in Figure 1. In JAXA, GPM-MOS produce DPR and GSMaP products in near-real time and production to deliver them via JAXA Earth observation satellite data distribution system named as “G-Portal”. And the other US-Japan Joint GPM standard products are also available from G-Portal. GPM product list is shown in Table 1. GPM Product Latency DPR science data will be dumped once or twice per orbit by TDRSS-SA (TDRSS Single Access) 2.3 Mbps. On the other hand, the GMI science data will be dumped continuously by TDRSS-MA (TDRSS Multiple Access) 230 kbps link in addition to SA passes, which improves data latency for end users. By the TDRSS access, automatic ground system operations and performance improvement of ground system processing and network communication throughput, the target of GPM data latency is much better than the Tropical Rainfall Measuring Mission (TRMM). The target and results are shown in Table 2.

JAXA GPM Mission Operation system overview and GPM data distribution from G-Portal

Author: Tomomi Nio, Toshiyuki Konishi, Norio Saito, Mitsuhiko Fuda, Naoaki Ikeda, Akari Yoneyama, Yoko Fujita and Yousuke Ikehata Mission Operations System office of Space applications mission directorate (MOSS), Japan Aerospace Exploration Agency (JAXA) GPM Ground System Overview and Data Flow

Table 1 : GPM Product List

Earth Observation Data Distribution from JAXA

10th GSIM, 1 June 2011

GPM Core Observatory

GPM science teams & end

users

Instrument Data

Science Data White Sands

Ground Station

Command, Telemetry

Instrument Data

TDRSS

Partner Ground Systems

Planned/Existing Spacecraft

Partner Constellation Spacecraft

NASA Precipitation Processing

System (PPS) Instrument Data NASA Mission

Operation Center(MOC)

JAXA Mission Operation

System (MOS)

RF Communications -realtime telemetry -stored telemetry (5 min file) : CCSDS File Delivery Protocol (CFDP) S-band TDRSS MA RTN @ 230 Kbps S-band TDRSS SA RTN @ 2.3 Mbps

STORM

Products GPM (Sept.-Oct. average time/ archived %) TRMM (July 8-14, 1 week average) GMI/TMI L1B GMI L1B-rt: 21 min, 99.6%

(requirement:≦1 hr after observation, 90% of the time) TMI 1B11-rt: 2 hr 37min

DPR/PR L2 DPR L2-rt: 1 hr 10 min, 99.2%

(requirement:≦3 hr after observation) PR 2A25-rt: 2 hr 38 min

DPR/GMI COMB L2

1 hr 20 min, 98.9% (requirement:≦3 hr after observation, 90% of the time)

N/A

Figure 1 : GPM Ground System Overview and GPM Mission Data Flow

(C)1. Search by physical quantities 2. Select period and region 3. View result

(A) Users can search products by physical quantities or satellites/sensors.

(B)Users can directly get products by sftp.

Data Utilization Information For data usage, data format specification and notice/caveats on data are available linked from G-Portal. When access G-Portal website like in Figure 2-(A), there is a link for “operation information”. GPM mission provides • Product List: User can see which data is available, and

which product version are latest one. • Data document: Uer can get format specification, ATBD,

data utilization handobook. • GPM missing data list: Users have to take care to usage

of data in commissioning phase for off-nominal data. • Tool: I/O toolkit and Viewer (PPS THOR) is available.

Figure 2: G-Portal captures (A) web home page (B) sftp direct get image(C) steps of search & download

Processing Level

Product [Product Identifier/

Algorithm Key] Key Parameters File

coverage

Latest Product Version

1

KuPR L1B [DUB] Received Power GPM orbit

(Gorbit*) Ver. 03B

KaPR L1B [DAB] Received Power Gorbit Ver. 03B

GMI L1B [G1B] Brightness Temperature (Tb) Gorbit Ver. 03B

GMI L1C [G1C] Brightness Temperature (Tb) Gorbit Ver. 03B

Constellation L1C Inter-calibrated Brightness Temperature (Tb) 1 orbit

Ver. 02A, Ver. 03A for

AMSR2

2

KuPR L2 [DU2] Reflectivities, 3D Precipitation Gorbit Ver. 03B

KaPR L2 [DA2] Reflectivities, 3D Precipitation Gorbit Ver. 03B

DPR L2 [DD2]

Dual Frequency Retrievals, 3D precipitation Gorbit Ver. 03B

GMI L2 [GL2]

Precipitation, Total Precipitable Water Gorbit Ver. 03C

DPR-GMI Comb L2 [CL2]

DPR-GMI retrieval. 3D Precipitation Gorbit Ver. 03C

3

DPR L3 Daily (TEXT) [D3D] Precipitation 0.1°x 0.1°

Daily

Ver. 03C DPR L3 Daily(HDF5) [D3Q] Precipitation 0.25° x 0.25°

Daily

DPR L3 Monthly [D3M] Precipitation 0.25° x 0.25°

Monthly

GMI L3 Monthly [GL3] Precipitation 0.25° x 0.25°

Monthly Ver. 03C

DPR-GMI Comb L3 [CL3] Precipitation 0.25° x 0.25°

Monthly Ver. 03C

GSMaP Hourly (TEXT) [MCT]

Precipitation including retrievals from partner microwave sensors; -GPM/GMI (2014.3.14~) -TRMM/TMI -DMSP-F16/SSMIS -DMSP-F17,18/SSMIS -GCOM-W/AMSR2 -METOP-A,B/AMSU-A, MHS * (No METOP-A/MHS data 3/27-5/20) -NOAA-18,19/AMSU-A, MHS

0.1°x 0.1° Hourly

Ver. 03C GSMaP Hourly (HDF5) [MCH]

0.1°x 0.1° Hourly

GSMaP Monthly [MCM]

0.1°x 0.1° Monthly

Auxiliary Data (from JMA)

Environmental data extracted KuPR swath

[DU2/ENV]

Temperature, Air Pressure, Cloud Water Vapor, Liquid Water Gorbit Ver. 03B

Environmental data extracted KaPR swath

[DA2/ENV]

Temperature, Air Pressure, Cloud Water Vapor, Liquid Water Gorbit Ver. 03B

Environmental data extracted DPR swath

[DD2/ENV]

Temperature, Air Pressure, Cloud Water Vapor, Liquid Water Gorbit Ver. 03B

* Gorbit is the GPM orbit calculated from the southern most point back to the southern most point for standard product. Near-Real-Time Product is also available except for daily or monthly products. The scene coverage of L1-L2 products are depending on the instrument mission data donwlink.

Table 2 : GPM Data Latency

G-Portal Overview G-Portal is the multi-mission dissemination infrastructure for JAXA Earth Observation Satellites including TRMM, GPM, GOSAT, ADEOS, ADEOS-II, etc. G-Portal can disseminate products on internet and without charge, except for high resolution products and/or commercial based products as ALOS , and ALOS-2 which will be coming soon. User can get products in two ways. (A)Users can search products by physical quantities and by satellites/sensors and to get selected products with thumbnails and browses. (B)Users also can obtain products by sftp. G-Portal had opened from Feb. 28, 2013, starting with TRMM and past satellites data, and GPM data was released to the public on Sep. 2, 2014. (A) https://www.gportal.jaxa.jp and (B) sftp.gportal.jaxa.jp And the catalogue data is also disseminated via CATS-I (Catalogue Transfer Service - Interface). http://catsi.jaxa.jp

HELPDESK You can contact us!! Questions about GPM mission data [email protected] How to get JAXA’s EO data [email protected]