• react@noa.gr

  • Call Us:+30 210 81 09 182

ElectricVolcano - Climatic impacts of volcanic ash electrification

PI: V. Amiridis, Grantee: S. Misios

Start date: 01/01/2022

Duration: 24 months

Funding: H2020, Marie Skłodowska-Curie actions

Total Budget: 165.085,44€                 IAASARS Budget: 165.085,44€

Description: ElectricVolcano will combine state-of-art remote sensing techniques, detailed aerosol charging theories and comprehensive atmospheric modelling to provide for the first time a thorough assessment of the impact of electrification on the life cycle of volcanic ash in the stratosphere. Through cutting edge inter-interdisciplinary research, the project produces a step change in the way volcanic eruptions are treated by modelling centers and inter-comparison studies, with the potential to significantly reduce uncertainties in natural forcing and near-term predictions. Carefully-designed research and training activities, combined with the world-class excellence on aerosol-electrification research of the Host Institute, guarantee the success of the proposed project. ElectricVolcano provides new knowledge, tools and resources to the Experienced Researcher for expanding significantly his research horizon and boosting his professional independence.

January 2022 - January 2024

December 2020 - June 2021

NEWTON - ImproviNg dust monitoring and forEcasting through Aeolus WInd daTa assimilatiON

PI: V. Amiridis

Start date: 10/12/2020

Duration: 18 months

Funding: European Space Agency

Total Budget: 149,995.20€                 IAASARS Budget: 109.998,34€

Description: NEWTON aims to demonstrate the potential improvement of short-term dust forecasts when Aeolus wind observations are assimilated in regional numerical simulations performed by the WRF-Version 4.0 (research mode) and WRF-CHEM (operational) models. The modelling experiments will be conducted for two Regions of Interest (ROIs), covering the: (i) Tropical Atlantic Ocean-W. Sahara and (ii) Eastern Mediterranean, subjected to dust transport, encompassing also the major natural erodible dust sources globally. By contrasting numerical outputs produced with and without assimilated Aeolus wind profiles, they will be investigated the modifications on dust life cycle components and they will be assessed all the contributing factors. In order to justify the potential improvements on the representation of dust fields, the simulated dust loads, resulted from the different model configurations, will be evaluated against observations: (i) that will be obtained in the framework of the ASKOS campaign (Cape Verde; June-July 2021), (ii) acquired at the PANGEA (Antikythera) and CAO (Cyprus) observatories, (iii) provided by ground-based networks (AERONET, MAN, EARLINET) and (iv) from the in-house developed databases MIDAS and LIVAS. Overall, NEWTON will highlight the benefits and the necessity of Aeolus data on dust research, paving the way for future operational satellite missions. 

ASKOS - Support to the Aeolus Validation and Calibration Through Ground Based Observations in the Tropics

PI: V. Amiridis

Start date: 20/11/2020

Duration: 22 months

Funding: European Space Agency

Total Budget: 249,997.93€                 IAASARS Budget: 126,000€

Description: In the framework of the ESA-Aeolus Cal/Val activities, the Agency aims for the implementation of a tropical campaign with its base in Cape Verde that comprises of ground-based activities, as well as airborne components. The objective of the ASKOS activity is to provide to the tropical campaign the necessary ground-based support to the ESA-Aeolus mission, regarding the calibration and validation of its products, to improve the quality of the data and to assess their random error and the biases. The proposed activity aims to deploy advanced instrumentation in the tropics over Cape Verde in June-July-August 2021, in order to provide unprecedented observations of high quality and accuracy for the wind and aerosol component of Aeolus and reference values for the Cal/Val of the mission.

November 2020 - August 2022

October 2020 - January 2022

CORAL - COllocated wind and aerosol pRofiles of AeoLus for the investigation of ocean sea-salt emissions.

PI: V. Amiridis

Start date: 01/10/2020

Duration: 16 months

Host institution: National Observatory of Athens (NOA)

Funding: European Space Agency (ESA) PRODEX

Description: Sea-salt aerosols emission is governed by various physical processes, with a strong dependence on wind. Strong winds speed result in bursting of the air bubbles that have been entrained in the waves during whitecap formation and in the tearing of the droplets from the wave tops. Sea salt aerosol particles can serve as nuclei for the growth of sulphate particles from the oxidation of dimethyl sulphide. These processes are of particular importance, especially in remote ocean regions, where in the absence of alternative aerosol sources sea salt may be the dominant contributor to cloud condensation nuclei (CCN). The Earth Explorer Aeolus mission provides for the first time the ability to obtain simultaneous and collocated profiles of wind speed and aerosol extinction coefficient, backscatter coefficient, and lidar ratio at 355 nm. This gives us the opportunity to investigate the correlation between wind and open sea salt production. Aeolus data will be assimilated in regional scale atmospheric models in order to analyze the sea-salt production mechanisms. Combination of Aeolus data with relevant satellite products for SST and biological ocean activity will lead in more conclusive results regarding the particular mechanisms that are involved in the production of open sea marine particles. Changes in global wind patterns due to climate change are expected to affect also the marine particles production and as a result, to affect also the cloud and precipitation processes especially over remote ocean areas.                  

EVE - A novel mobile ground-based lidar for the Enhancement and Validation of ESA products

PI: V. Amiridis

Start date: 18/6/2019

Duration: 15 months

Funding: European Space Agency (ESA)

Description: The objective of the ESA-EVE project is to provide the upcoming ESA missions of Aeolus (and later also EarthCARE), with a well characterized, flexible, mobile reference ground-based lidar system, tailored to the specifics of ALADIN (and also ATLID), thus capable of providing well-characterized “ground truth” observations.  

June 2019 - September 2020

May 2019 - May 2022


PI: V. Amiridis

Start date: 01/05/2019

Duration: 36 months


Description: The objective of the Stavros Niarchos Foundation (SNF) donation will is to provide financial support to the initiative of the National Observatory of Athens (NOA) of establishing and operating the PANhellenic GEophysical observatory of Antikythera (PANGEA) according to the standards defined by the Global Atmosphere Watch of the World Meteorological Organization (GAW/WMO). Through this initiative and the SNF grant, NOA will address a number of its scientific and societal objectives related to challenges such as the climate change and its impact on severe weather and natural disasters in Greece and the Eastern Mediterranean.

A-CARE - Technical Assistance for EarthCARE related research activities in combination with the A-LIFE field experiment

PI, V. Amiridis

Start date: 01/01/2019

Duration: 24 months

Funding: European Space Agency (ESA)

Description: The objective of the ESA-EVE project is to provide the upcoming ESA missions of Aeolus (and later also EarthCARE), with a well characterized, flexible, mobile reference ground-based lidar system, tailored to the specifics of ALADIN (and also ATLID), thus capable of providing well-characterized “ground truth” observations.  The main scientific objectives of A-CARE (TECHNICAL ASSISTANCE FOR EARTHCARE-RELATED RESEARCH ACTIVITIES IN COMBINATION WITH THE A-LIFE FIELD EXPERIMENT) are derived from the scientific objectives of EarthCARE. EarthCARE aims at improving our understanding of aerosol/cloud interactions on the global scale by providing accurate vertical distributions of key aerosol and cloud properties, in order to assess their impact on the Earth’s radiative budget and climate.

January 2019 - January 2021

September 2018 - September 2021

PANACEA - PANhellenic infrastructure for Atmospheric Composition and climate change.

CO-PI: V. Amiridis      

Start date: 26/09/2018

Duration: 36 months

Funding: Operational Programme "Competitiveness, Entrepreneurship and Innovation" (NSRF 2014-2020) and co-financed by Greece and the European Union (European Regional Development Fund).

Description: The PANhellenic infrastructure for Atmospheric Composition and climatE change (PANACEA) is envisioned to become the high-class, integrated Research Infrastructure (RI) for atmospheric composition and climate change not only for Greece, but also for southern Europe and eastern Mediterranean, an area that is acknowledged as a hot spot for climate change. The RI is designed to be: in full compliance with EU Regulation 651/26.6.2014 and act as the Greek component of ACTRIS/ESFRI (Aerosols, Clouds and Trace gases Research Infrastructure) and ICOS/ESFRI (Integrated CO2 Observation System). PANACEA addresses the need for monitoring of atmospheric composition, solar radiation variations, climate change and related natural hazards in Greece, and for providing tailored services to crucial national economy sectors that are affected by air pollution and climate change, such as public health, agriculture/food security, tourism, shipping and energy/ renewables. The overarching goal of PANACEA is the integration of all existing national facilities to create a single harmonized high-class innovative distributed RI to serve and provide access to all academic/research institutions and the private sector (industry/SMEs) in the wide scientific range covered by PANACEA. IAASARS participates in PANACEA since 2017 with the PANGEA Climate Change Observatory of Antikythera. 

CHARISM - Development of a Novel High Spectral Resolution Lidar for Air Pollution Monitoring

PI: V. Amiridis

Budget for IAASARS: 120.470,00 €

Start date: 31/7/2018

Duration: 35 months

Funding: Operational Programme Competitiveness, Entrepreneurship and Innovation 2014-2020 (EPAnEK)

Description: CHARISM aims to develop a novel High Spectral Resolution Lidar (HSRL). HSRLs are state-of-the-art instrument, providing high quality aerosol measurements used for research, air-quailty studies, and satellite validation. Up to now, such instruments are limited to a handful of research laboratories around the world. In this project NOA, in collaboration with Raymetrics S.A. SME, aim to develop the first commercially available HSRL system, making the technology available to a wider audience.

July 2018 - June 2021

September 2017 - September 2022

D-TECT - Does dust TriboElectrification affect our ClimaTe?

PI, V.Amiridis

Start date: 01.09.2017

Duration: 60 months

Host institution: National Observatory of Athens (NOA)

Funding: European Research Council (ERC) Consolidator Grant 2016, H2020-EU.1.1., Excellent Science, Project ID: 725698

Description: D-TECT aims to parameterize the physical mechanisms responsible for dust triboelectrification, assess the impact of electrification on dust settling, quantify the climatic impacts of the process, particularly the effect on the dust size evolution during transport, on dry deposition and on CCN/IN reservoirs, and the effect of the electric field on particle orientation and on radiative transfer.  

DUST-GLASS - Improving global dust prediction and monitoring through data assimilation of satellite-based dust aerosol optical depth

PI: V. Amiridis, Grantee: A. Gkikas

Start date: 01/05/2017

Duration: 24 months

Host institution: National Observatory of Athens (NOA)

Funding: Marie-Curie European action - Research Fellowship Programme

Description: DUST-GLASS aims at improving global dust prediction and monitoring by optimizing an advanced data assimilation system (LETKF scheme) coupled with a sophisticated atmospheric-dust model (NMMB/BSC-Dust).  

May 2015 - May 2019

November 2016 - November 2019

Support the National Centre for the Collection, Analysis and Dissemination of Satellite Data for the Observation of the Earth, Atmosphere and the Sea

PI: V. Amiridis

Start date: 01/11/2016

Duration: 36 months


Description: Supports the operation and sustainability of the National Center of Excellence for EO-based monitoring of Natural Disasters (NCEON) of NOA for the next three years, including the upgrade and maintenance of the infrastructure and the employment of young researchers to support operations. The action aims on sustaining the continuous operation of our National hub for EO-related collection, validation and distribution of near-real time observations and services with emphasis on natural disasters (e.g. fires, floods, desert dust monitoring and forecasting, volcanic eruptions, air pollution, earthquakes, landslides).

ECARS - East European Centre for Atmospheric Remote Sensing

PI: V. Amiridis

Start date: 01/01/2016

Duration: 24 months

Funding: HORIZON 2020, The EU Framework Programme for Research and Innovation under grant agreement No 692014.

Description: ECARS addresses the challenges of the Twinning programme by tackling deficiencies and networking gaps between INOE and internationally-leading counterparts at EU level. The overarching objective of the ECARS project is to boost INOE’s research capacity in the domain of atmospheric remote sensing and create a pole of excellence in East Europe.

January 2016 - 31 December 2018

DEDICAtE Development Of A Dual-Channel Depolarization Lidar Technique For The Derivation Of CALIPSO/AEOLUS/EARTHCARE-Related Conversion Factors

PI: V. Amiridis

Start date: 15/01/2015

Duration: 26 months, 16 days

Funding: European Space Agency (ESA)

Description: This ESA study aims at delivering spectral conversion factors for the lidar linear depolarization ratio between 355 and 532 nm in order to convert CALIPSO observations (532 nm) to EarthCARE-related observations (355 nm).

MULTIPLY - Development of a European HSRL airborne facility

PI: V. Amiridis

Start date: 14/10/2014

Duration: 60 months

Description: MULTIPLY - Development of a European HSRL airborne facility, is a ESA-ESTEC project which proposes the development of a novel multi-wavelength HSRL system (3b + 2a + 3d) for airborne operation.

October 2014 - October 2019

May 2014 - March 2015

CHARADMExp - Characterization of Aerosol mixtures of Dust And Marine origin

PI: V. Amiridis

Start date: 15/05/2014

Duration: 10 months

Funding: European Space Agency (ESA

Description: The CHARADMExp campaign aims to derive optical, microphysical and chemical properties of marine component and its mixture with dust, employing sophisticated instrumentation installed on an appropriate site. Specifically, aerosol characterization will be established by ground-based active/passive remote sensing techniques, surface in-situ measurements and airborne UAV observations.


PI: V. Amiridis

Start date: 01/01/2014

Duration: 27 months

Funding: FP7-SPACE-2013-1 under grant agreement No 606953.

Description: Marcopolao aims using European and Chinese expertise to improve air quality monitoring, modelling and forecasting over China by improving emission database using satellite data with a focus on emission estimates from space and their refinement for anthropogenic and biogenic sources through spatial downscaling and source sector apportionment. State-of-the-art techniques and recent wide range satellite and in-situ data and GIS information will be applied. New emission inventories will serve as input to air quality modelling on regional and urban scales, and it is expected to improve considerably existing air quality information and forecasts (to be supported by validation and following international standards and recommendations) interactively customized at MarcoPolo website.

January 2014 - March 2017

February 2013 - August 2015

HyFlex- Verification of the Hyperspectral Plant Imaging Spectrometer

PI: V. Amiridis

Start date: 18/02/2013

Duration: 34 months

Funding: European Space Agency (ESA)

Description: HYFLEX aims to deliver maps of sun-induced fluorescence recorded from aircrafts measurements using the approaches of the space & air borne FLEX mission. Air borne data will be validated by ground based measurements and these data will provide a crucial element related to fluorescence retrievals from space in the context of the FLEX mission, as implemented in tandem with Sentinel 3. NOA participates in HYFLEX campaign by providing atmospheric lidar data that will be used for the much needed atmospheric corrections in order to retrieve reliable hyperspectral retrievals.


PI: V. Amiridis

Start date: 01/09/2011

Duration: 24 months

Funding: European Space Agency (ESA)

Description: LIdar climatology of Vertical Aerosol Structure for space-based lidar simulation studies” is an ESA project aiming to provide a global and extensive aerosol and cloud optical database, to be used for current and future space-borne lidar end-to-end simulations of realistic atmospheric scenarios, as well as retrieval algorithm testing activities. LIVAS provides a global 3-dimensional aerosol and cloud optical climatology and a collection of case studies focused on atmospheric episodes related to specific aerosol/cloud types (extended atmospheric scenes, i.e. Saharan dust events, smoke and volcanic eruption events, polar-stratospheric clouds etc). In order to cover the different spectral domains for HSRL and IPDA lidars, the compiled database addresses the three harmonic operating wavelengths of Nd-YAG lasers (355 nm, 532 nm and 1064 nm) as well as typical wavelengths of IPDA lidars in the SWIR spectral domain (1570 nm and 2050 nm).

September 2011 - August 2013

About Us

ReACT stands for “Remote sensing of Aerosols, Clouds and Trace gases”, to describe the research focus of the respective research team led by Dr. Vassilis Amiridis. ReACT consists of highly motivated scientists within the field of Atmospheric Sciences, combining a number of Post-doc researchers, Ph.D. and M.Sc. students as well as other research and technical staff, using the resources, infrastructure and experience of the Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing (IAASARS).

Address :

Vas.Sofias 79

Phone :

+30 210 81 09 182



Follow us: