ESA-JAXA Pre-Launch EarthCARE
Science and Validation Workshop
13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

JAXA EarthCARE Product Overview
Takuji Kubota
JAXA EarthCARE Mission Scientist
Earth Observation Research Center (EORC)
Japan Aerospace Exploration Agency (JAXA)

Covered in previous presentation

Covered in this presentation

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ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EarthCARE JAXA Product• Level 1 product will be developed by sensor provider agencies.
✓ i.e. JAXA will provide CPR Level 1 product• JAXA and ESA develop Level 2 geophysical products individually, and continuous exchange of information is
being conducted between Japan and Europe through the Joint Algorithm Development Endeavor (JADE),
under the framework of the Joint Mission Advisory Group (JMAG).
• JAXA and ESA products will be distributed by both agencies.
JAXA G-Portal (data dissemination system)✓Users can acquire products of both agencies from the websites of both agencies; theESA website provides JAXA products in addition to ESA products, and the JAXA G-Portalwebsite distributes ESA and JAXA products as well (Wehr et al. 2023, AMT).

https://gportal.jaxa.jp/gpr/?lang=en• For JAXA Level 2 Products, it is consisted by two categories; Standard Products– strongly promoted to be developed and released– processed and released from JAXA G-Portal– all data will be able to be sent to ESA when produced
 Research Products– promoted to be developed– released from JAXA Earth Observation Research Center(EORC)– some are planned to be upgraded to standard products
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

3EarthCARE science data processing chain(JAXA Standard products)
CPR

ATLID

CPR

Level 1

Single Sensor

BBR

MSI

ATLID

L1Engineering

MSI

Data Release

BBR

L1

L1

L1launch

ValuesCPR

Level 2aSingle Sensor
Geophysical values(microphysics etc.)

CPR

L2a

ATLID

L2aEcho
Product

L2aMSI

L2a
Data Release

Cloud
Product

9 months afterlaunch

CPR
ATLID

Multiple Sensors(Synergy)

6 months after

L2b

2 Sensors Synergy Product

Level 2b Geophysical values(microphysics etc.)

ATLID

Data Release

CPR

CPR

L2bMSIATLID

L2bMSIBBR

3 Sensors Synergy Product4 Sensors Synergy Product

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

18 months
after launch

4

JAXA CPR Level 1 Processor Status• In CPR level 1b products, received echo power,
radar reflectivity factor, Doppler velocity,
spectrum width, normalized surface scatteringcross section, and data flag are included.
➢ The CPR Level 0 data is delivered from ESA PDGS to JAXA’sEarthCARE mission operation system (MOS).
➢ This is then processed by CPR level 1b processor whichturns the raw data in engineering units into calibrated
parameters, such as received echo power and Doppler
velocity, stored in level 1b data products. Geolocations,
quality information, and error descriptors are added tothe level 1b products as well.
✓ See more descriptions in Eisinger et al. (2023, AMT)

➢ CPR Level 1b Processor Version 0.29 was used for theintegration test related to the Ground Segment
Acceptance Review (GS-AR), and L0-L2 sequential
processing chain were verified there.

JAXA L1b processor results using synthetic data (Halifax)

CPR L1b Radar
reflectivity
factor profile

CPR L1bDoppler
velocity profile

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

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Overview of JAXA L2a and L2b data products
Overview of JAXA L2aand L2b data products
containing retrieved
aerosol, cloud,precipitation andradiation parameters.
The column in themiddle lists the namesof the respective L2
data products(Wehr et al. 2023,AMT).

Overview of JAXA L2 products
Cloud-top, vertically integrated, layerwise

CPR_ECO

Vertical profile

CPR_CLP

Aerosol
Boundary layer height
Aerosol optical thickness
Angstrom exponent

ATL_CLA

Cloud and precipitation
Cloud phase
Optical thickness
Effective radius
Cloud-top temperature, pressure,and height
Liquid, ice water path

CPR_VVL

Radiation
Radiative flux at TOA/BOA
Aerosol direct radiative Forcing
at TOA/BOA

MSI_CLPCPR_DOP
CPR_RAS

ATL_ARL
MSI_ICE
MSI_ARL
AC_CLP
ACM_CLP
ALL_RAD
AC_MRA
AC_RAS
AC_VVL

Aerosol
Aerosol species
Extinction, backscatter, lidar ratio
Depolarization ratio
Mode radius
Cloud and precipitation
Refractivity
Doppler velocity
Extinction
Cloud mask, cloud particle type
Effective radius, optical thickness
Liquid/Ice/rain/snow water content
Rain/snow rate
Vertical air motion
Sedimentation velocity
Mass ratio (2D ice/IWC)

AM_ARLACM_CDPACM_RAS

Radiation
Radiative heating rate

ACM_VVL
ACM_ICEESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

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Expected views of JAXA EarthCARE Level 2 products
using synthetic L1 data (Halifax)
CPR (cloud, doppler velocity)

MSI (cloud, aerosol)

4-sensor synergy(Radiation)

L2 processor status:• We completeddevelopments ofLevel 2 processor
Version 0.4 on
September 2023.

ATLID (cloud, aerosol)

2-sensor synergy(CPR+ATLID) and3-sensor synergy(CPR+ATLID+MSI)
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy• Version 0.4 wasused for theintegration test
related to the GSAR, and L0-L2
sequential
processing chain
were verified there.

7EarthCARE JAXA Science Team Algorithm& Simulator (as of 2023)
PI

EarthCARE JAXA Project Scientist

CI

Hajime Okamoto (Kyushu Univ.)

Algorithm

Simulator

StandardStandard

Standard

Standard

Standard

CPR

CPR
CPR-ATLID
CPR-ATLID-MSI

ATLID

MSI

4-Sensors

Hiroaki Horie(NICT)

Hajime Okamoto(Kyushu Univ.)

Tomoaki Nishizawa(NIES)

Takashi Nakajima(Tokai Univ.)

Kentaroh Suzuki(Tokyo Univ.)

Yuichi Ohno
(NICT)

Kaori Sato
(Kyushu Univ.)

Rei Kudo(MRI)

Minrui Wang (TokaiUniv.)

Kenji Sato
(NICT)

Eiji Oikawa(JMA/MRI)

Yuichiro Hagihara(JAXA)

Hiroshi Ishimoto(MRI)Joint-Simulator

Masaki Satoh(Tokyo Univ.)

Akira Yamauchi(Tokyo Univ.)

Yousuke Satoh(Hokkaido Univ.)

Roh Woosub(Tokyo Univ.)

Akiko Higurashi(NIES)

Eiji Oikawa(Kyushu Univ.)

Miho Sekiguchi(Tokai Univ.)

Tampei Hashino(Koch Univ. ofTechnorgy)

Yoshitaka Jin(NIES)

Takashi Nagao(Tokyo Univ.)

Hitoshi Irie
(Chiba Univ.)
Tetsu Sakai
(MRI)

CPR

ATLID

MSIStandard

■■

■

■

Research■■■■■

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

Toshihisa Matsui(NASA)BBR

CPR-ATLID

ATLID-MSI■■■

CPR-ATLID-MSI■■■■

4-Sensor■

8Japanese synthetic data for algorithm development• EarthCARE synthetic data using a global storm-resolving (NICAM) and Joint-Simulator (J-Sim)
have been developed in Japan and used in the JAXA L2 algorithm developments.
✓ Synthetic data description paper, Roh et al. (2023, AMT) was published in the AMT.
Introduction to EarthCARE synthetic data using a global storm-resolving simulation.
Roh et al., Atmos. Meas. Tech., 16, 3331–3344, https://doi.org/10.5194/amt-16-3331-2023

EarthCARE L1 data construction in Japan
Algorithms have been developed using the synthetic data by
the Joint-Simulator in the JAXA EarthCARE Science team.

EarthCARE L1 data simulated by Joint-Simulator (J-Sim) with NICAM-SPRINTARSMSI radiance simulation from NICAM

Time sinceepoch (sec)Time isin UTC.

sim

Tb10.8 μm•••

LidarSimulationfrom NICAM(Last version:
NICAM 3.5 km simulation, 2008 June 19 th 00Z
The data was interpolated based on the sampling procedure of each sensor.only cloudsignals
The orbit was simulated such a way that EarthCARE passes equator at 14:00simulated)local time in the descending node.

CPR Radarreflectivity
Simulationfrom NICAM

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

Satellite track9

EarthCARE Special issue in AMT• A special issue in on-going as "EarthCARE Level 2 algorithms and data products" in the EGU journal AtmosphericMeasurement Techniques (AMT).
✓https://amt.copernicus.org/articles/special_issue1156.html• ESA/JAXA/NICT paper✓ The EarthCARE mission – science and system overview, Tobias Wehr, Takuji Kubota, Georgios Tzeremes, Kotska Wallace, Hirotaka Nakatsuka, Yuichi Ohno, RobKoopman, Stephanie Rusli, Maki Kikuchi, Michael Eisinger, Toshiyuki Tanaka, Masatoshi Taga, Patrick Deghaye, Eichi Tomita, and Dirk Bernaerts, Atmos. Meas.
Tech., 16, 3581–3608, https://doi.org/10.5194/amt-16-3581-2023, 2023
✓ The EarthCARE Mission: Science Data Processing Chain Overview, Michael Eisinger, Fabien Marnas, Kotska Wallace, Takuji Kubota, Nobuhiro Tomiyama, YuichiOhno, Toshiyuki Tanaka, Eichi Tomita, Tobias Wehr, and Dirk Bernaerts, EGUsphere, https://doi.org/10.5194/egusphere-2023-1998, 2023

We really
appreciate efforts
by Editors: Drs.
Ulla Wandinger,
Pavlos Kollias,
Anthony
Illingworth,Hajime Okamoto,and Robin Hogan.

Wehr et al. (2023) forEarthCARE Scienceand system overview
paper by
ESA/JAXA/NICT wasselected as “Highlightpaper” in the AMT.

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy10Summary + Flow of EarthCARE data utilizationEarthCARE science data product andprocessing chain (JAXA Standard products)
CPR

ATLID

CPR

Level 1

Single Sensor
Engineering

BBRMSI

ATLID

L1MSI

Data Release

BBR

L1L1L1CPR

Single Sensor
Geophysical values(microphysics etc.)

CPR

L2a

ATLID

L2aEchoProduct

L2aMSI

L2a
Data Release

CloudProduct9 months after
launchCPR
ATLIDMultiple Sensors(Synergy)

6 months after
launchValues

Level 2a

JAXA G-Portal (data dissemination system)& the ESA website

L2b2 Sensors Synergy Product

Level 2b Geophysical values(microphysics etc.)

Data Release

CPRCPR
ATLID

L2bMSI

ATLID

L2bMSIBBR

3 Sensors Synergy Product

Cloud/Aerosol/
Radiation researchgroups

18 months
after launch

4 Sensors Synergy ProductClimate model group(Univ. Tokyo, JMA/MRI,JAMSTEC, NIES, …)

Storm-resolving modelgroups (Univ. Tokyo,JAMSTEC, RIKEN, …)

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

Weather modelgroups (JMA/MRI,RIKEN, …)

Aerosol model groups(NIES, JMA/MRI,Kyusyu Univ., …)
11Appendix:
JAXA EarthCARE Product Model

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EarthCARE JAXA L2 Production Model