| # | Work Package 1 | Due date | Delivery date |
| 1 | MS1.1 Updated list of National ACTRIS consortia with National Contact Persons | 3 | 3 |
| 2 | MS1.2 First IAC meeting held during ACTRIS IMP | 8 | 2 |
| 3 | MS1.3 First SIAB meeting held during ACTRIS IMP | 12 | 3 |
| 4 | MS1.4 First ACTRIS community meeting held | 18 | 3 |
| 5 | MS1.5 First regional meeting organised | 18 | 11 |
| | Work Package 2 | | |
| 6 | MS2.1 Methodology and criteria for validation of ACTRIS operation support and service provision | 12 | 24 |
| 7 | MS2.2 Negotiations started with the Central Facilities | 18 | 18 |
| 8 | MS2.3 Plan for ACTRIS personnel training and human capital development | 18 | 17 |
| 9 | MS2.4 Mid-term report on ACTRIS operation support and service validation | 24 | 24 |
| 10 | MS2.5 Draft report on financial and capacity scenarios | 24 | 29 |
| 11 | MS2.6 Refined risk management plan | 24 | 25 |
| | Work Package 3 | | |
| 12 | MS3.1 ACTRIS meeting on technologies and innovation with participation of the ACTRIS associate from private sector | 12 | 17 |
| 13 | MS3.2 Macroeconomic impact analysis updated | 18 | 24 |
| 14 | MS3.3 ACTRIS Meeting with the National Stakeholders organized | 20 | 25 |
| 15 | MS3.4 ACTRIS general science meeting focusing on the user dimension and the international stakeholders | 24 | 29 |
| | Work Package 4 | | |
| 16 | MS4.1 Release of the tool for estimating the necessary capacity at the Central Facilities | 3 | 3 |
| 17 | MS4.2 Recommendations for harmonisation of procedures and tools across the ACTRIS domains | 12 | 12 |
| 18 | MS4.3 Selection of web-based NF-TC-DC workflow management tool | 12 | 18 |
| 19 | MS4.4 Action plan for CF human capital building | 12 | 14 |
| 20 | MS4.5 Release of the list for priority operation support and services | 12 | 16 |
| 21 | MS4.6 Access to first version of web-based NF-TC-DC workflow management tool | 24 | 34 |
| 22 | MS4.7 Collection of the first feed-back on the operation support provided to National Facilities | 36 | 42 |
| | Work Package 5 | | |
| 23 | MS5.1 Exercises to test RI operations at experienced NFs defined | 12 | 18 |
| 24 | MS5.2 First series of NF thematic workshops on remote sensing, in-situ measurements and simulation chamber experiments performed | 14 | 14 |
| 25 | MS5.3 First NFs labelled and operational | 24 | 36 |
| 26 | MS5.4 Connections to new NFs and RPFs established | 26 | 26 |
| 27 | MS5.5 First series of NF technical workshops on new developments for the observation of aerosol, clouds and reactive trace gases performed | 26 | 28 |
| 28 | MS5.6 Majority of NFs labelled and operational | 48 | 48 |
| 29 | MS5.7 New NFs and RPFs reached the level of ACTRIS standards | 48 | 48 |
| | Work Package 6 | | |
| 30 | MS6.1 ACTRIS User experience map | 6 | 16 |
| 31 | MS6.2 Detailed description of ACTRIS Service catalogue | 6 | 13 |
| 32 | MS6.3 Design, features and functional requirements of the ACTRIS Science and User Forum | 8 | 13 |
| 33 | MS6.4 1st release of the ACTRIS online Catalogue of Services | 10 | 18 |
| 34 | MS6.5 2nd draft of the ACTRIS Management Plan | 12 | 12 |
| 35 | MS6.6 Updated analysis of user needs | 15 | 18 |
| 36 | MS6.7 Enhanced user strategy with recommendations to ACTRIS facilities | 18 | 39 |
| 37 | MS6.8 Beta version of the Access Management Platform | 22 | 26 |
| 38 | MS6.9 Results of the testing of the access and services provision system | 42 | 42 |
| | Work Package 7 | | |
| 39 | MS7.1 Definition of the pilot access process to ACTRIS facilities | 8 | 12 |
| 40 | MS7.2 Advertisement and launch of first call for access | 9 | 11 |
| 41 | MS7.3 Advertisement and launch of second call for access | 21 | 21 |
| 42 | MS7.4 Intermediate assessment of the pilot access concept and process | 25 | 27 |
| 43 | MS7.5 Advertisement and launch of third call for access | 33 | 31 |
| 44 | MS7.6 Final assessment of the pilot access concept and process | 44 | 48 |
| | Work Package 8 | | |
| 45 | MS8.1 Identification of potential synergistic activities with other ENVRIs | 6 | 6 |
| 46 | MS8.2 A first evaluation of alignment of ACTRIS with international networks | 6 | 24 |
| 47 | MS8.3 Meetings with international stakeholders addressing joint global initiatives and focusing on connection with GCOS | 9 | 16 |
| 48 | MS8.4 Internal evaluation of the potential use of e-infrastructure portfolio by ACTRIS | 12 | 24 |
| 49 | MS8.5 First International ACTRIS training course held | 12 | 17 |
| 50 | MS8.6 Series of meetings with international stakeholders achieved that serve the purpose of an application to GEO initiative | 24 | 26 |
| | Work Package 9 | | |
| 51 | MS9.1 Launch of survey to identify past and current collaboration between ACTRIS and private sector and success stories | 6 | 11 |
| 52 | MS9.2 Identification of collaboration models between ACTRIS and private sector | 12 | 16 |
| 53 | MS9.3 Recommendations to ACTRIS facilities | 18 | 35 |
| 54 | MS9.4 Draft ACTRIS Innovation offer portfolio | 24 | 24 |
| 55 | MS9.5 Design of the ACTRIS Innovation section in the ACTRIS web-site | 26 | 27 |
| | Work Package 10 | | |
| 56 | MS10.1 Analysis report on the performance and fitness of the internal communication | 6 | 10 |
| 57 | MS10.2 Report of the communication means used and success, incl. metrics | 10 | 10 |
| 58 | MS10.3 Guidelines for communication and public relations | 24 | 24 |
| 59 | MS10.4 Analysis of the best practices to engage ACTRIS user groups | 32 | 32 |
| 60 | MS10.5 Updated report of the communication means used and success, incl. metrics | 38 | 39 |
| | Work Package 11 | | |
| 61 | MS11.1 Deliverable work flow description available | 3 | 3 |
| 62 | MS11.2 ACTRIS IMP kick-off meeting | 3 | 3 |
| 63 | MS11.3 Procedures for associated partnership program available | 3 | 3 |
| 64 | MS11.4 Internal communication channels set up | 4 | 4 |
| 65 | MS11.5 ACTRIS IMP meeting 2021 | 24 | 15 |
| 66 | MS11.6 ACTRIS IMP meeting 2022 | 36 | 28 |
| 67 | MS11.7 ACTRIS IMP final meeting | 47 | 46 |
