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

JAXA EarthCARE Validation Plan
Toshiyuki Tanaka, Takuji Kubota
Earth Observation Research Center (EORC)
Japan Aerospace Exploration Agency (JAXA)JAXA Validation Related Activities
Collaboration/Coordination

JAXA Validation Team✓ Defining validation method and approaches: JAXA
validation implementation plan (JAXA VIP)
✓ Regular Val. team meetings✓ Maintenance and continuous observation✓ Validation rehearsal with EC Research A-Train product✓ Matchup frequency analysis

International collaborations✓ ESA-JAXA Validation Implementation Plan
✓ Confluence page for validation-related
satellite operation information✓ Validation workshops✓ Mutual use of validation related tools✓ Airborne campaign with DLR✓ Ground-based correlative dataexchange with NOAA
✓ Contributing to ACPV aiming a CEOS
document

Web pages/tools development
✓✓✓✓
✓
✓

EarthCARE product monitor (Quick Look)
EarthCARE Orbit Prediction
EarthCARE Orbit Search
JAXA EarthCARE Validation portalValidation Data Archive System (VDAS)Validation Matchup Web

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

JAXA Validation ApproachCampaigns

Networks

Ground campaign provides multisensor detailed evaluations, andairborne campaign abundant numberof matchup data in early phase

Long-term groundobservation networks
provide detailed validations

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

Spaceborne
Satellite sensors provide
global evaluations and large
amount of matchup dataJAXA Validation Approach
AD-NetWINDAS

Asian dust and aerosol lidar observation network
Main correlative observation for ATLID product

JMA wind profiler network

Networks

T. Nishizawa-san’s and J. Yoshitaka-san’s talk on Day 5

Other Networks: AD-Net, SAVERNET, WINDAS, SKYNET,AERONET, NIED Ka-band radars, All-sky cameras, BSRN, GEBA
Ka radars: T. Ohigashi-san’s talk on Day 5
All-sky cameras : T. Nakajima-san’s talk on Day 3
BSRN: A. Yamauchi-san’s talk on Day 4
SAVERNET: J. Yoshitaka-san’s talk on Day 5
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

Y. Ohno-san’s talks on Day 5
H. Okamoto-san’s talk on Day 2

JAXA Validation Approach
HALO airborne campaign
Collaboration with DLR. EarthCARE-likeairborne campaign EC-TOOC is plannedwith HALO aircraft (High Altitude andLong Range Research Aircraft)

Campaigns

Silke Gross-san’s talk on Day 4

Koganei Validation Super Site
High sensitivity doppler cloud radar andscanning doppler cloud radar, wind profiler,doppler lidars, HSRL, MFMSPL, microwaveradiometer, all-sky camera, etc.
H. Okamoto-san’s talk on Day5
H. Horie-san’s talk on Day 4
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy© DLR

JAXA Validation Approach
Correlative data exchange, matchup dataset
creation, LL intake, validation tools heritage,etc.

Spaceborne

GCOM-C/SGLI

T. Y. Nakajima-san’s talkon Day 3

DPR is Dual-frequency Precipitation Radar,
Ka- and Ku-bands.

SGLI is multispectral imager with 19 channels,
250m resolution, especially for MSI product.

GPM/DPR

Others: A-Train, Aeolus, Himawari
N. Takahashi-san’s on Day 3

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

Web Pages/Tools Development• We are developing several web
pages/tools. The right is prototypeof EarthCARE Product Monitor(Quick Look). English page is also
under development and will beopened in public.

✓✓✓✓✓
✓

Prototype of EarthCARE Procut Monitor

EarthCARE product monitor (Quick Look)
EarthCARE Orbit Prediction
EarthCARE Orbit SearchJAXA EarthCARE Validation portal
Validation Data Archive System (VDAS)Validation Matchup Web

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

Summary and Final Remark• To fully validate the EarthCARE products which produced in the complicated production model, JAXA
validation team detailed validation method for JAXA EarthCARE products which can be summarized
as the three pillars.
• Early validation results will be opened when product public release which is scheduled for standard
product as– L2 one-sensor and two-sensor product: L+9 months– L2 3-sensor and 4-sensor product: L+18 months

Networks• When product version-up, the latest results ofvalidation is also opened in public.
• EarthCARE product validation is highly challenging,so we believe collaboration between validation
teams is indispensable, hope the WS helps fosteringcollaboration internationally, especially between
European and Japanese teams.
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

Campaigns

Spaceborne

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

JAXA Production Model and Product Release
Public Release Targetfor standard productL2 one-sensor productL2 two-sensor synergy productL+9 months
L2 3-sensor and4-sensor synergy product

L+18 months
Early validation results will be
opened at the product release.

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Product Release and Early Validation ResultCPR

ATLID

CPR

Level 1

Single Sensor

BBR

MSI

ATLID

L1EngineeringMSI

Data Release

BBR

L1

L1

L1launchValues
CPR

Level 2a6 months afterSingle Sensor

CPR

L2aGeophysical values(microphysics etc.)

ATLID

L2aEcho
Product

L2aMSI

L2aData Release

CloudProduct9 months afterlaunch

CPR
ATLID

Multiple Sensors(Synergy)

L2b2 Sensors Synergy Product

Level 2b Geophysical values(microphysics etc.)

ATLID

Data Release

CPR

CPR

L2bMSI

ATLID

L2bMSIBBR

3 Sensors Synergy Product18 months

after launch

4 Sensors Synergy Product

Early validation results will be opened at the product release.

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JAXA EarthCARE Validation Implementation Plan Document
List of JAXA standard products
Product Name

Parameter
Integrated Radar Reflectivity

CPR One-Factorsensor Echo

Integrated Doppler Velocity

Required accuracy

Product Name

ReleaseStandardTargetーーー

Cloud Flagー≦1.3m/s<0.2m/s

Cloud Phase

ProductGas Correction Factor
Cloud Mask
Cloud Particle TypeLiquid Water Content

CPR One-ー±30%±100%ーー±10%±50%±100%ー±5%±20%±100%±50%(as LWC)(as LWC)±100%±50%(as LWC)(as LWC)

Cloud Top Height±1Kーー±3Kー
ー±1.5K
ーーFeature Mask

±100%

±40%±10%Target Mask±100%±40%±10%(1.6/2.2μm)±50%

Cloud Top Temperature
Cloud Top Pressureーーー

Optical Thickness

ー

±100%

±50%

Cloud Mask

ーー

ATLID One-Cloud Particle Typeーーsensor Cloud

CPR-ATLID

Liquid Water Content

ー

±20%

and Aerosol

Synergy Cloud

Ice Water Content

ー

±30%

Product

Product

Effective Radius of Liquid Water/CloudCPR-ATLID-

Effective Radius of Ice Water

MSI Synergy

Cloud

Cloud ProductOptical Thicknessーー

Four Sensors

Liquid Water Pathーー

Synergy

Ice Water PathーーRadiation

Cloud±10%

ProductーEffective Radius of Ice Water±15%Effective Radius of Liquid Cloudー

Cloud±10%

Cloudー

Effective Radius of Liquid Water±15%

Optical Thickness of Liquid Waterー

ProductTarget

sensor Cloudー

Ice Water Content

Required accuracyStandard

MSI One-ー

sensor Cloud

Parameter

Release±15%(Ocean)±20%(Land)±15%(Ocean)±20%(Land)
±10%
±30%

±50%(Cloud) ±30%(Cloud) ±15%(Cloud)ー

Root meansquare ofExtinction Coeff.

one sensor(Aerosol)

±90%

±70%

±50%

±110%

±70%

(Aerosol)(Aerosol)(Aerosol)

±150%

±130%

±100%

±500m

±300m

±100m

Radiative Flux (SW/LW)

ー±25 W/m2±10 W/m2

Radiative Heating Rate (SW/LW)

ーーー

Planetary Boundary
Layer Heightproducts±20%(Aerosol)±150%

Depolarization Ratio

ー±40%(Aerosol)±140%(Cloud) ±100%(Cloud) ±65%(Cloud)Lidar Ratio±2μm

errors ofー

Backscat. Coeff.

±60%

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JAXA EarthCARE Validation Implementation Plan Document• Correlative data for each JAXA EarthCARE standard product is summarized in the table below.
Product name​Main parameters​

Correlative data

CPR One-sensor
Echo ProductIntegrated radar reflectivity factor, integrated
doppler velocity

NICT Koganei composite observation, WINDAS,NIED Ka-band radars,​ CloudSat (climatology),
DLR HALOCPR One-sensor/
CPR-ATLID Synergy/
CPR-ATLID-MSI Synergy
Cloud Product

Cloud mask, cloud particle type, liquid watercontent, ice water content, effective radius ofliquid/ice water cloud, and optical thickness,
liquid water path, ice water path

NICT Koganei composite observation, NIED Kaband radars, A-Train (climatology), DLR HALO,
Microwave radiometer

ATLID One-sensor
Cloud and Aerosol ProductFeature mask, target mask, extinction coefficient,backscatter coefficient, lidar ratio, depolarization
ratio, and planetary boundary layer height

AD-Net, SAVERNET, SKYNET,​AERONET, CALIPSO (climatology), Aeolus

MSI One-sensor
Cloud Product

Cloud flag, cloud phase, opticalthickness, effective radius, cloud top
temperature, cloud top pressure, and cloud top
heightAll-sky camera, GCOM-C, Himawari, BSRN, Skyradiometer, Microwave radiometer

Four Sensors Synergy
Radiation Budget Product

SW/LW radiative flux and SW/LW radiative
heating rate

BSRN, GEBA, CERES, BBR,​A-Train (climatology)
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JAXA EarthCARE Validation Implementation Plan Document• Geolocations of ground-baseinstruments for validation

Google MyMap link
https://www.google.com/maps/d/edit?mid=1KfijbqxtNQwMTacq0Ec0E5X1hEMylg_T&usp=share_link

14

JAXA Validation Approach
Campaigns
Ground campaign provides multisensor detailed evaluations, andairborne campaign abundant numberof matchup data in early phase

Networks
Long-term groundobservation networks
provide detailed validations

Spaceborne
Satellite sensors provide
global evaluations and large
amount of matchup data15