Garrlic
The GARRLiC algorithm provides micro-physical and optical aerosol properties, inverting simultaneously sun/sky radiometer and lidar ground-based observations. This synergistic approach can provide column-integrated parameters, like the particle volume size distribution, the complex refractive indexes, the spherical fraction, the Aerosol Optical Depth and absorption, the single scattering albedo. The LIDAR vertically resolved measurement allows to retrieve vertically resolved parameters like the abbption, extinction and aerosol concentration profiles.
The science prototype development is as a partnership between the GRASP-SAS company which develops the GRASP (Generalized Retrieval of Atmosphere and Surface Properties) algorithm, and the Laboratoire d’Optique Atmosphérique (LOA) which develops its LIDAR/photometer declination, GARRLiC.
The input data used are, for the photometer part, the AERONET data (Almucantars radiances and Aerosol Optical Depth), and for the LIDAR part, data from ACTRIS/EARLINET network and from the ACTRIS-FR stations.
Products
These products are described here :
- ACTRIS/EARLINET stations : https://www.aeris-data.fr/en/metadata/?391fb196-d96a-5e69-b46f-54626f00e71e
- ACTRIS-FR, LOA station, CE370 lidar : https://www.aeris-data.fr/en/metadata/?4c20e9cd-b1cd-5850-b370-d4bdc7914962
- ACTRIS-FR, LOA station, double layer lidar : https://www.aeris-data.fr/en/metadata/?97869e21-ff7c-5045-9936-5ba270838f52
- ACTRIS-FR, LOA station, LILAS lidar : https://www.aeris-data.fr/en/metadata/?ebe7215b-76da-5c33-8980-1323cfe2b47e
- ACTRIS-FR, Mbour station, CE370 lidar : https://www.aeris-data.fr/en/metadata/?c5607f6c-b287-5609-bfbd-d7d8b0e20b5c
- ACTRIS-FR, SIRTA station, Chm15k ceilometer : https://www.aeris-data.fr/en/metadata/?4980c41e-3826-5c4d-b0cf-75209dba5299
- ACTRIS-FR, CO-PDD station, Raymetrics LIDAR : https://www.aeris-data.fr/en/metadata/?002ed436-f8e2-583e-9f54-54b39c6e7991
Restricted access
– products issued of the ACTRIS-FR stations: they are opened to the ACTRIS-FR community, but must granted and validated by the PI fo external users
– products issued of the ACTRIS/EARLINET stations: each user that requires the access to this dataset must follow the on-line procedure described here :https://www.icare.univ-lille.fr/data-policy/?policy=garrlic
Free access
The products issued of the ACTRIS/EARLINET stations during the start of 2020 and COVID-19 campaign are opened and freely available as zip archives here :
- ACTRIS/EARLINET stations, COVID-19 pandemic may campaign: https://www.aeris-data.fr/en/garrlic-covid-19-may/
- ACTRIS/EARLINET stations, January to May 2020: https://www.aeris-data.fr/en/garrlic-covid-19
Points of contact
Nicolas PASCAL (CDS AERIS/ICARE)
nicolas.pascal@univ-lille.fr
Data and Metadata management at the Data and Services Center, ACTRIS ARES Data Centre deputy
Custodian
AERIS/ICARE Helpdesk (CDS AERIS/ICARE)
contact@univ-lille.fr
Helpdesk of the Data and Services Center
Resource Provider
AERONET (AERONET (AErosol RObotic NETwork))
AERONET Data Center, hosted by the Goddard Space Flight Center
- https://aeronet.gsfc.nasa.gov
- Data provider of AERONET/NASA sun and moon photometer products
ARES-CNR (European Centre for Aerosol REmote Sensing (ARES)
Consiglio Nazionale delle Ricerche (CNR) component)
ARES-CNR, hosted by the CNR-IMAA (Istituto di Metodologie per l'Analisi Ambientale)
- https://www.imaa.cnr.it
- Data provider of ACTRIS/EARLINET Lidar SCC Level 1 products
GRASP SAS (GRASP SAS)
office@grasp-sas.com
GRASP (Generalized Retrieval of Atmosphere and Surface Properties) SAS
- https://www.grasp-sas.com/
- Provider of the GRASP algorithm
Principal investigator
Lucia Mona (CNR-IMAA-Consiglio Nazionale delle Ricerche - Istituto di Metodologie per l'Analisi Ambientale)
lucia.mona@imaa.cnr.it
ACTRIS ARES Data Centre Leader
Philippe Goloub (LOA-PHOTONS-Laboratoire d'Optique Atmosphérique - SNO PHOTONS/AERONET-EARLINET, ACTRIS-FRANCE)
philippe.goloub@univ-lille1.fr
European Centre for Aerosol Remote Sensing - AERONET-Europe calibration facility Leader - PI of Lille Lidar station