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

EVID<22>: Validation of the EarthCARE ATLID and MSI products
using ground-based lidar and sunphotometry measurements
in East Asia
T. Nishizawa*1, Y. Jin*1, A. Higurashi*1, R. Kudo*2, H. Irie*3, K. Yasunaga*4, M. Katsumata*5, K.
Yumimoto*6, S. Ishii*7, H. Okamoto*6, K. Sato*6, T. Y. Nakajima*8*1NIES, *2JMA/MRI, *3Chiba University, *4University of Toyama, *5JAMSTEC,*6Kyushu University, *7Tokyo Metropolitan University,*8Tokai University, Japan

Observation (AD-Net + SKYNET)
Map of observation sites

NICT, Koganei site (35.7N, 139.5E)

Tsukuba
355nm-HSRL
355nm-DWL

Coherent
2µm-DWL

94GHz radar(ES-SPIDER)

355nm
MFMSPL

PalauHedo

Scanning interferometer used in 355nm-HSRL[Jin et al. 2020]

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

355nm-MFMSPL[Nishizawa et al. 2021]

Objective
The objective is to validate the aerosol and cloudproducts of the ATLID and MSI. This study focuses
primarily on aerosol-related products. The main
target parameters are:

Instruments/Status/measured parameters✓aerosol-oriented 355 nm extinction, backscatter,and depolarization profiles (A-AER/ATLID L2A)
✓355 nm cloud and aerosol extinction, backscatter,and depolarization profiles (A-EBD/ATLID L2A)
✓aerosol layer products (A-ALD/ATLID L2A)
✓aerosol optical thicknesses (AOTs) at 670 and
865 nm (M-AOT/MSI-L2A)✓columnar aerosol optical properties (AMACD/ATLID-MSI L2B)
using ground-based lidar network (AD-Net) dataand sunphotometry network (SKYNET) data in EastAsia.
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID<22>: <ATLID and MSI validation
using ground-based measurements in East Asia>

Validation: ADM L2A vs Ground-based lidar【ADM vs 355HSRL-Koganei】
HSRL-Koganei【ADM vs 355Raman-Fukuoka】

19/Nov/2019
L2A SCA-midpoint

Fukuoka-Raman-HSRL

Vertical profile: L2A vs Raman
SCA-midMCARaman

3/Apr/2019

HSRL-Koganei

Scatter plot: 2019.11-2020.6, clear-sky

Scatter plot: 2019.12-2020.3, clear-sky
30km<ΔD<80km

ADM

ADM

60km<ΔD<70km

𝛃HSRL-Koganei

HSRL-Koganei

60km<ΔD<70km

ADM

𝛂30km<ΔD<80km

ADM

𝛃𝛂Raman-Fukuoka

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

Raman-Fukuoka

Observation (new addition, Koganei)
Continuous measurements
to begin in October 2023.

Comparison of AOD (CALIOP vs AERONET)Use data where the distance between satellite and site iswithin 27.5 km and the time difference is within 30 minutes.

AOT (CALIOP)

Skyradiometer

AOT (Ground-based)

All-sky view camera (optional use)

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

Summary●Continuous observation of AD-Net and SKYNET is being conducted.

●Operational expenses have been and will continue to be covered by external
competitive funds from related research institutes and researchers.
●The Palau observation site will be closed in 2024 due to thesituation of the operator (JAMSTEC). We are currently
considering where to relocate the site.
●Data assimilation studies using satellite and ground-based
data are underway, and the creation of integrated satellite andground data is underway. The use of the integrated data adding
the EarthCARE for satellite and inter-satellite comparison will
also be considered in the future.

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

Example of Integrated AOT and extinction data
Here, CALIPSO, Himawari, MODIS, ADNet, SKYNET,and AERONET data in 2019 are integrated
in 0.5 degree and 1hour.