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

EVID41: Assessment of EarthCare Aerosol and Cloud Products throughGround-Based Measurements from the E-PROFILE and AERONET Networks
F. Navas-Guzmán1, A. Cazorla1, R. Román2, A. del Águila1, A. Haefele3, R. Rüfenacht3, F. Marenco4,G. Martucci3, D. Pérez-Ramírez1, J. Muñiz-Rosado1, C. Toledano2 and L. Alados-Arboledas1
1University of Granada (Spain). 2University of Valladolid (Spain). 3Federal Office of Meteorology andClimatology (MeteoSwiss, Switzerland). 4The Cyprus Institute (CyI, Cyprus)

AEROCLOUD project•

EVID41: Assessment of EarthCare Aerosol and Cloud Products through Ground-Based Measurements from the EPROFILE and AERONET Networks (AEROCLOUD)•PI: Francisco Navas Guzmán•

Financial Entity: Junta de Andalucía (Regional Government) Period: 01.01.2023 – 31.12.2026
GENERAL OBJECTIVE
Advancement in the 4D continental monitoring of atmospheric aerosol properties using the synergy of groundbased and satellite remote sensing instruments•SO#1. Improvement in aerosol characterization by means of passive and active remote sensing•

SO#2. Development of network for 4D characterization of atmospheric aerosol by combination of sun/skyphotometers and ceilometers•

SO#3. 4D continental characterization of the atmospheric aerosol during medium-long range transport•

SO#4. Evaluation of the capability of synergy of ground-based and satellite observations for a global monitoring ofaerosol optical and microphysical properties•

SO#5. Validate and add new aerosol products to the EarthCARE satellite mission

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

EVID41: EarthCARE cal/val using ceilometers and SPMs

AEROCLOUD team
University of Granada, Spain

MeteoSwiss, Switzerland• Dr. Francisco Navas Guzmán• Dr. Alexander Haefele (MeteoSwiss)• Dr. Alberto Cazorla Cabrera• Dr. Rolf Rüfenacht (MeteoSwiss)• Dr. Daniel Pérez Ramírez• Dr. Giovanni Martucci• Dr. Ana del Águila• MSc. Jorge Muñiz• Prof. Lucas Alados Arboledas

The Cyprus Institute, Cyprus• Dr. Franco Marenco

University of Valladolid, Spain• Prof. Carlos Toledano• Dr. Roberto RománESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID41: EarthCARE cal/val using ceilometers and SPMs

The E-PROFILE ALC network
Assess vertical /horizontal aerosol distribution andtransport in real-time• commercial ALCs (different types)• more than 400 instruments from 22 European
countries (still growing)• in operation 24/7

• central data processing• automatic calibration- Rayleigh calibration (used here)- Cloud calibration for lower power• real-time data + quicklook delivery

https://e-profile.eu/ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID41: EarthCARE cal/val using ceilometers and SPMs

The E-PROFILE ALC network

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

EVID41: EarthCARE cal/val using ceilometers and SPMs

Passive Remote Sensing Instruments➢ Sun/sky/lunar photometer (CIMEL Electronique)• Filters: 340, 380, 440, 500, 675, 870,940, 1020 and 1640 nm• Robotic system:• Solar direct irradiance• Sky radiance• Lunar direct irradiance
AERONET: dense global-scale network of column-integrated
aerosol measurements (long dataset: more than 25 years)•••••

Aerosol optical depth (AOD)
Angström exponent (AE)Particle size distribution (PSD)
Refractive index (RI)
Single-scattering albedo (SSA)

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

EVID41: EarthCARE cal/val using ceilometers and SPMs

GRASP code
GRASP (Generalized Retrieval of Aerosol and Surface Properties)• Developed in the Laboratoired’Optique Atmospherique at Universityof Lille(France)• GRASP is a versatile and open-source
algorithm(www.grasp-open.com)[Dubovik et al., 2014]• Can retrieve columnar and verticalproperties of atmospheric aerosols
from a variety of remote sensing
observations[Dubovik et al., 2014]

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

EVID41: EarthCARE cal/val using ceilometers and SPMsGRASPpac scheme
Cimel CE318• Aerosol Optical Depth (AOD) and sky
radiances at 440, 675, 870 and 1020 nm• AERONET dataAOD

Lufft CHF15k• Range corrected signal (RCS) at1064 nm
RCS• Resolution 15 m

Sky

Column-integrated

GRASPpac(ceilo&SPM,Román et al. 2018)• Size distribution (SD)
• SSA
• Refr. Indices• Lidar ratio• …

Vertical• Volume Concentration• Extinction• Backscatter• Absorption• Scattering• …

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

EVID41: EarthCARE cal/val using ceilometers and SPMs

Methodology and Work Plan
Work Package
WP-1: Gathering E-PROFILE data (L0-10M → L0+26M)
WP-2: Gathering simultaneous and co-located ceilometer and sun/sky measurements from EPROFILE/AERONET networks (L0-10M → L0+26M)
WP-3: Implementation of automatic routines to retrieve aerosol optical and microphysicalproperties using GRASP (L0-10M → L0+14M)
WP-4: Synergy AERONET with ATLID observations for aerosol retrievals (L0-4M → L0+26M)

WP-5: Validation of EarthCARE products using E-PROFILE network (Phase E2 → L0+24M)
WP-06: Validation of EarthCARE/AERONET retrievals with ground-based methodologies (PhaseE2 → L0 + 24M)
WP-07: Communication and dissemination (L0 → L0 + 36M)

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

EVID41: EarthCARE cal/val using ceilometers and SPMs

E-PROFILE and EarthCARE
Validation of EarthCARE products using E-PROFILE network• Coincidence criteria between ceilometers and ATLID will be based on 3 hours and 120 km
distance to the overpass• AEROCLOUD will target only 𝜆 - independent products:• Feature masks (clear sky, cloudy sky, aerosol layer, etc.)• cloud height, cloud phase,• aerosol layer boundaries ...

nd• L2 product assessment will be carried out using longer-term observations

tions toperties
rad. prop.
otion
OA

Collocatedobservationsof lidar,radar,imager,
radiometer
3Coincidence criteria: 3 hours and120 km distance to the overpass
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID41: EarthCARE cal/val using ceilometers and SPMs

E-PROFILE and AERONET
Validation of EarthCARE products using the synergy of SPM and ceilometers• Gathering simultaneous and co-located ceilometer and sun/sky measurementsfrom E-PROFILE/AERONET networks• Data from more than 44 co-located E-PROFILE and AERONET stations• Creating an automatic alerting system adapted to EarthCARE overpasses byselecting the closest pixels near simultaneously to the E-PROFILE and AERONETstations over Europe• Implementation of automatic routines to retrieve aerosol optical andmicrophysical properties using GRASP• Vertical profiles of optical and microphysical properties distributed across Europe
Column-integrated properties: Aerosol Optical Depths at
different wavelengths, single-scattering albedo (SSA),
lidar ratio (LR), and effective
Vertical profiles of backscatter, scattering, extinction,and absorption coefficients at 440, 675, 870, 1020, and1064 nm

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

EVID41: EarthCARE cal/val using ceilometers and SPMs

EarthCARE and AERONETATLID and AERONET measurements• Synergy of column-integrated aerosol measurementsfrom AERONET with ATLID observations for aerosol
retrievalsoop.

• New products to EarthCARE (optical and microphysicalproperties from GRASP algorithm)

Collocatedobservationsof lidar,radar,imager,radiometer• Validation versus E-PROFILE/AERONET synergy
3• Evaluation of backscatter and extinction coefficients• Evaluation of microphysical properties from both
approaches (effect of wavelength dependency)• Issues of the geometry of the measurements
Aerosol vertical information on a global scale
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EVID41: EarthCARE cal/val using ceilometers and SPMs

Experimental Field Campaigns➢ Field campaigns in winter and summer 2025
Payerne station(Switzerland)

AGORA observatory (Granada, Spain)

Cobald sondes

State-of-the-art active and passive remote sensing
and in-situ techniques• Multi-wavelength Raman lidar• Microwave radiometer (HATPRO)• Ceilometer (Lufft, CHM15K)• Cloud radar (94 GHz, RPG)• Integrating nephelometer (TSI Model 3563)• Doppler lidars• Drones measurements• Cobald sondes• Weather stations
Evaluation of EarthCARE products and thedifferent approaches• Validation of E-PROFILE/AERONET synergy• Validation of EarthCARE/AERONET synergy• Evaluation of backscatter and extinction
coefficients• Evaluation of microphysical properties fromboth approaches (effect of wavelength
dependency• Issues of the geometry of the measurements

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

EVID41: EarthCARE cal/val using ceilometers and SPMs

Validation of lidar profiles
Total 17 profiles (2016-2019), RH < 90%• RALMO and CHM15K successfully
reproduce the vertical structure ofboundary layer aerosol observed by
COBALD, including fine structures• Mean ± standard deviation discrepancies
for 0-2 km altitude:Δβaer-455nm Ralmo-Cobald = +6% ± 40%
Δβaer-940nmCeilo-Cobald = +13% ± 51%

FreeTroposphe
reBoundaryLayer+6%+13%• Large standard deviations mostly due toatmospheric variability (balloon spatialdrift with altitude, time integration)

Brunamonti, S., Martucci, G., Romanens, G., Poltera, Y., Wienhold, F. G., Hervo, M., Haefele, A., and Navas-Guzmán, F.: Validation of aerosol
backscatter profiles from Raman lidar and ceilometer using balloon-borne measurements, Atmos. Chem. Phys., 21, 2267–2285, 2021.
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

EarthCARE validated productsSensor/product
ATLID

Validation
A-FM: validate the detection of aerosol/cloud layers or clear sky identification
A-AER: extinction, backscatter, depolarization, aerosol layer, aerosol type at 355 nm.
A-EBD
A-TC (target classification)
A-ALD: aerosol layer descriptors Will be validated with the ceilometers.

Multi-Spectral
Imager (MSI)

M-CM the cloud flag will be validated
M-AOT at 670 nm from GRASP
C-TC: cloud layer base will be validated with the ceilometers

Synergetic products

ATLID + CPR: The target classification (AC-TC)
ATLID + CPR + MSI: the cloud and aerosol properties (ACM-CAP), particularly the aerosol
number concentration and extinction, the composite product (ACM-COM) for the aerosol
optical depth at 355 nm and aerosol type and finally the radiances (ACM-RT) for the 1D direct
and diffuse surface irradiance.

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

EVID41: EarthCARE cal/val using ceilometers and SPMs

Summary➢ The Ceilometer network E-profile offers continuous observations of aerosols and clouds on aEuropean scale, making it a valuable resource for validating certain EarthCARE products➢ The synergy between co-located ceilometer and sun-photometer instruments and the use ofGRASP algorithm enhances the mission by providing additional optical and microphysicalinformation for validation purposes➢ Leveraging the synergy between Aeronet data and EarthCARE introduces new products to themission and enables exploration of factors such as wavelength dependency and measurement
geometry➢ Several field campaigns will be conducted in Southwest and Central Europe to validate EarthCARE
and the different approaches proposed in this project

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

EVID41: EarthCARE cal/val using ceilometers and SPMs

Outline

Thank you very much for your attention!!
fguzman@ugr.es
Acknowledge: Funding by ”Junta de Andalucía – Consejeríade Universidad, Investigación e Innovación – Proyecto(ProExcel_00204)”
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

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