ESA-JAXA Pre-Launch EarthCARE
Science and Validation
Workshop

13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

LITES: cal/val with lidar in Hatfield, UKDetlef Mueller1, Rui Song2

1. University of Hertfordshire
2. National Center for Earth Observation, Atmospheric, Oceanic and Planetary Physics,
University of Oxford, Oxford, OX1 3PU, UK

Hertfordshire ground lidar station
Lidar Innovations for Technologies andEnvironmental Sciences (LITES) facility• Multi-wavelength lidar (1064 nm, 532 nm, 355 nm)• Multi-channel spectroscopic Raman lidar• High spectral resolution lidar (HSRL)

51.75°N, 0.24°W• Polarization lidar

Lidar Innovations for Technologies and Environmental Sciences (LITES) – An Remote Sensing Infrastructure Facility: Setup andMeasurements Examples. Boyan Tatarov, Detlef Müller, Matthias Tesche, Sung-Kyun Shin. EPJ Web Conf. 237 07017 (2020). DOI:
10.1051/epjconf/202023707017
ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), Italy

Multi-channel Lidar Spectrometer as part of LITES® Lidar Innovations for Technologies and Environmental Sciences (LITES)
design, construction, operational: 2013 - 2023

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

Main Laser System: Nd:YAG + OPO
up to 7 J at 1064 nm (10 Hz)

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

Spectroscopic Raman lidar facility
Provides both elastic and a range of
inelastic return signals based on molecularvibrational and/or rotational state• IdenGﬁes the Raman scaIering and luminescencecharacterisGcs for aerosols and gases• Allows for idenGﬁcaGon of chemical composiGon ofatmospheric polluGon
The
spectralsignatureofatmosphericcomponents
including elastic (355 nm) and 31 inelastic channels was recordedon 15 Feb 2023 between UTC 15:00 and 19:30.

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

Hertfordshire ground lidar processing chain

Photon counting

AEOLUS CAL/VALAnalog

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

Observation Date: 14th Feb 2023
Overpass quick view:
Ground Observation summary:o Observation time: 17:00 – 01:30 (UTC).
o Atmospheric condition: thin clouds at 11 km.
o Data condition: 32PMT (Raman channel) has goodmeasurements after sunset.
o Background atmosphere: radiosonde measurementsfrom (51.20N, 1.80W).
o Aerosol/cloud retrieval: 32PMT Raman channel isused.
AEOLUS observation summary:• Overpass time: 17:33 UTC• Aerosol products: baseline-15 SCA-Midbin products,
and MLE products, with cloud filtering implementedfor both.

Range corrected elas<c lidar signals:

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

Observation Date: 14th Feb 2023
• AEOLUS overpass at 52.07°, -0.24°, distance to site: 36 km
Ø Without cloud screening:Ø After cloud screening:

ESA-JAXA Pre-Launch EarthCARE Science and Validation Workshop | 13 – 17 November 2023 | ESA-ESRIN, Frascati (Rome), ItalySupport for EarthCARE CAL/VAL
LITES lidar in UK for validation of ATLID Profiles (LUK-AP) 😀
Summary:• Regular validaYon measurements during EarthCARE overpasses• ValidaYon measurements will be performed within a Yme window of about 3 h around an EarthCARE overpass.
• Co-locaYon will be assured using the trajectory approach outlined in the CALIPSO validaYon study of Tesche et al.
(2013).
• The measurements of elasYcally and inelasYcally sca\ered light will be analysed using standard retrieval method andprovide aerosol proﬁle products for the validaYon of ATLID measurements.
• Aerosol and cloud base and top heights will be obtained by detecYng strong gradients in the range-corrected signal at1064 nm using the wavelet covariance transform method of Brooks (2003).

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