What is ACTRIS?

ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instrument calibration centres, and a data centre. ACTRIS serves a vast community of users working on atmospheric research, climate and Earth system and air quality models, satellite retrievals, weather analysis and forecast systems by offering high quality data and research infrastructure services for atmospheric aerosols, clouds, and trace gases. Read more...


ACTRIS on ESFRI roadmap

ACTRIS-2 IA in H2020 (2015-2019)

ACTRIS I3 in FP7 (2011-2015)

ACTRIS PPP in H2020 (2016-2019)


Cloud radar calibration experiment at the SIRTA Observatory.
24 May 2018
The Cloud radar calibration experiment conducted by ACTRIS CCRES started May 22 at the SIRTA Observatory in Palaiseau.

A UAV will be used to carry a Cloud radar calibration target and position the target at 200 m altitude above the Cloud radars participating in the campaign. Read more...


ACTRIS VOC Side by Side Intercomparison 2018
24 May 2018

The ACTRIS VOC Side-by-Side intercomparison will take place at the Meteorological Observatory Hohenpeissenberg from June 18th to June 29th, 2018. Focus will be on the measurements of oVOCs and bVOCs. Read more...


ACTRIS Stakeholder Handbook is now published!
13 February 2018

First edition of ACTRIS Stakeholder Handbook is published.

 read more ...

ACTRIS-2 Call for TNA to the Puy de Dôme Station France, October 2018.
14 November 2017

Aerosol Ice Nucleation Campaign (Intercomparison of measurement techniques). It is planned to operate a number of aerosol ice nucleation instruments during the month of October 2018 with all types of instruments, both online and offline. Read more...


EUROCHAMP-2020 Aerosol particle organic analytical training course, 22.01.2018 - 27.01.2018
08 November 2017

EUROCHAMP-2020 has opened the first call for an aerosol particle organic analytical training course ! It will be hosted by TROPOS , at their OGTAC Calibration Centre. To know more about it and to apply, please click here.


EUROCHAMP-2020 first OGTAC CC inter-laboratory comparison (ILC), second half of March 2018 
08 November 2017

EUROCHAMP-2020 has launched the first OGTAC CC inter-laboratory comparison (ILC), to be held during the second half of March 2018! It will be performed at TROPOS to compare and validate offline analysis for particle-phase oxidation products of BVOCs. You can know more about it and apply by clicking on this link.


EMEP/ACTRIS/COLOSSAL IMP – Winter 2018 campaign
10 October 2017
Find details on the coming EMEP/ACTRIS/COLOSSAL IMP – Winter 2018 campaign, this is an invitation to ACTRIS sites doing absorption coefficient measurements to register. 

ACTRIS-2 Calls for TNA to CESAR and to KOS stations.
16 June 2017

A call for TNA is open to the Cabauw Experimental Site for Atmospheric Research, The Netherlands for the PTR-MS campaign and to the Kosetice-Kresin u Pacova, Czech Republic fo the Flux Mesurement Campaign. Check our website for more ...


4th ENVRI week registration now open!
17 March 2017
4th ENVRI WEEK will be held in Grenoble, France from 15th–19th May 2017. What is ENVRI week? ENVRI week is a week dedicated to Environmental Research Infrastructures. It is organised twice a year, in November and in May. Read More... 

ACTRIS-2 - EUFAR collaboration ongoing.
16 March 2017
EUFAR partnership with ACTRIS advances as access opportunities are provided to European researchers from over 30 Institutes to study in detail the aerosol composition and dynamics over Eastern Mediterranean. The core ACTRIS/EUFAR activity is concentrated over Crete with the PRE-TECT experiment (1-30 of April), aiming on... Read  more 

ACTRIS PPP accepted for EU funding
26 September 2016
The ACTRIS Preparatory Phase Project, submitted on June 22, 2016, has been accepted for EU H2020 funding. ACTRIS PPP brings together a wide community of research organizations and ministries and is essential for implementing ACTRIS as a centrally coordinated integrated pan-European RI by developing an organizational, operational and strategic RI framework. 

EUROCHAMP-2020 Integrated Activity accepted for funding
02 September 2016
The Integrated Activities proposal EUROCHAMP-2020 (Integration of European Simulation Chambers for Investigating Atmospheric Processes – Towards 2020 and beyond), submitted on March 30, 2016, has been accepted for EU H2020 funding. EUROCHAMP-2020 will develop a sustainable plan to integrate the ACTRIS RI through strong involvement of national and European stakeholders. 

Actris Preparatory Phase project was submitted
30 June 2016
The H2020 ACTRIS PPP proposal was submitted to the EC on June 22, 2016. ACTRIS PPP aims to bring ACTRIS to the level of organizational, operational, and strategic maturity that is required for its implementation to become a fully operational pan-European Research Infrastructure.  

AERONET Europe newsletter
17 June 2016
The first AERONET newsletter has been released! Read more... 

ACTRIS-2 and EUFAR are now collaborating!
14 June 2016
EUFAR is an EU FP7-Integrating Activity (2014-2018) with the aim to provide researchers with easy and open access to the airborne research facilities that are most suited to their needs. Read more... 

ESFRI Roadmap 2016 published!
16 March 2016
ACTRIS is identified on the ESFRI Roadmap 2016 document presented during the launch event on March 10, 2016 in Amsterdam. Read more... 

Specific 2016 calls for access to Lidar Calibration
01 March 2016
3 Calls for access to LiCal are now open! Submission deadline: March 31, 2016 Read more... 

1st ENVRIplus call for access to RI!
18 January 2016
Submit your proposal for multi-disciplinary access to Environmental Research Infrastructures. read more ...

ACTRIS has been selected for the new ESFRI 2016 roadmap!
08 December 2015
ACTRIS has taken an important step towards a long-term research infrastructure. On December 8, 2015, the EFSRI forum selected ACTRIS as one of the new infrastructures on the 2016 roadmap.  read more ...

Data center website: new version
23 October 2015
The ACTRIS data center just released a new version of its website. read more ...

Associated Partnership open to SMEs
15 October 2015
SMEs can now apply for ACTRIS-2 associated partnership. read more ...

ENVRIplus has a new website
18 September 2015

ENVRIplus brings together Environmental and Earth System Research Infrastructures to create a more coherent cluster of Environmental Research Infrastructures across Europe. 

Call for ACTRIS-2 TNA
24 July 2015
A permanent call for transnational access is open to ACTRIS-2 calibration and observational facilities. Read more... 


4th IAC Meeting 2018
June 07-08, 2018 | Zürich, Switzerland

Final WP3 Technical meeting
October 16-18, 2018 | Douai, France

Final WP2 Technical meeting
November 19-23, 2018 | Hatfield, UK

ACTRIS-2 Final Event
April 01-05, 2019 | Darmstadt, Germany

See all future events