ACTRIS Marketplace

Provision of lidar products in a near real-time window (e.g. within 3 hrs from measurement time) to a repository for use in model applications (e.g. Copernicus Atmosphere Monitoring Service). 

The service includes:

• Data analysis of the PANGEA lidar measurements in near real-time

• Data provision in near real-time to an online repository to be used as input in model applications (e.g. CAMS)

Identification and provision of customized datasets from PANGEA measurements focusing on aerosol-cloud-radiation interactions based on synergistic combination of remote sensing datasets and user constraints. This service is also applicable in order to obtain customized datasets about special situations, such as natural hazards (volcanic eruptions, wildfire events, dust outbreaks, special weather situations). It can also find application for evaluation studies of numerical weather simulations.

Additionally, external research groups are invited to bring their own equipment (remote sensing or in situ) in order to get completeness in the essential variables for short and long-term experimental campaigns at PANGEA premises. The infrastructure at PANGEA combines ACTRIS compliant aerosol and cloud remote sensing instrumentation, along with complementary measurements for meteorological parameters and radiation.

The service includes:

• Support from the scientific staff to process and analyze the PANGEA data. 

• Additionally, for the experimental campaigns:

  • Administrative support for the deployment and installation of the user’s instrument at the PANGEA premises

  • Technical support at the facility to fulfill visitor needs and constraints related to installation, deployment and operation of equipment (e.g. power connections, remote access, storage, internet network).

  • Support from the technical staff to install and operate the user’s instruments

Training on using NOA’s custom algorithm for lidar data analysis. The NOA algorithm is capable of processing the lidar signals and retrieving the lidar products: profiles of the  aerosol and thin clouds optical properties (e.g. particle backscatter and extinction coefficients, lidar ratio, depolarization ratio), water vapor mixing ratio, Angstrom exponent.

The service includes:

Training on using NOA’s custom algorithm for lidar data analysis and product retrievals

The remote island of Antikythera in Greece, is a unique marine observatory, being frequently affected by desert dust outbreaks while no significant human activities occur at a distance shorter than 70 km from the site.

The site is designed to be operational after 2026 for aerosol and trace gases (including greenhouse gases) in situ atmospheric measurements by combining state of the art online and offline techniques (sampling). Currently, equipment from ATMOS-NOA is transferred to the site by means of the NOA mobile unit to cover the access needs. Trips to the island on at least a monthly basis, for 2-3 days, are required for instrument maintenance/calibration.

The site can be used for comparison and testing of in-situ equipment. The available equipment of ATMOS-NOA is used in combination with external equipment if needed (external groups are invited to bring their own equipment).

Physical access includes use of the facilities, as well as help in the preparatory work, and technical and scientific support during the execution (physical or remote after set-up).

The services include:

• Support for accessing facilities (physical).

• Provision of workspace for visitors: desk space and internet access (physical).

• Advice for shipping of materials, transportation, reception and storage of equipment.

• Advice for managing accommodation near the site.

• Technical support at the facility to fulfill visitor needs and constraints related to installation, deployment and operation of equipment: set-up support, power connections, internet access, storage, security constraints (physical).

• Technical support to remotely operate and audit the external instrumentation (remote after installation).

• Scientific support for supervision and analysis of collected data (physical, remote).

• Unlimited observations and measurements as long as they do not interfere with other projects or instruments availability

  SERVICE STATUS: The service will be offered after 2026. The service is currently provided depending on the ATMOS-NOA equipment availability (transport of instruments from Athens to Antikythera). 

  TIME CONSTRAINTS: None for remote access. Limited physical access during the  November-March period. 

The remote island of Antikythera in Greece, is a unique marine observatory, being frequently affected by desert dust outbreaks while no significant human activities occur at a distance shorter than 70 km from the site.

The site can be used for research projects on aerosol and trace-gases in-situ measurements. The site is designed to be operational after 2026 for aerosol and trace gases (including greenhouse gases) in situ atmospheric measurements by combining state of the art online and offline techniques (sampling). Currently, equipment from ATMOS-NOA is transferred to the site by means of the NOA mobile unit to cover the access needs. External groups are invited to bring their own equipment. Trips to the island on at least a monthly basis, for 2-3 days, are required for instrument maintenance/calibration.

Physical access includes use of the facilities, as well as help in the preparatory work, and technical and scientific support during the execution (physical or remote after set-up).

The services include:

• Support for accessing facilities (physical).

• Provision of workspace for visitors: desk space and internet access (physical).

• Advice for shipping of materials, transportation, reception and storage of equipment.

• Advice for managing accommodation near the site.

•  Technical support at the facility to fulfill visitor needs and constraints related to installation, deployment and operation of equipment: set-up support, power connections, internet access, storage, security constraints (physical).

• Technical support to remotely operate and audit the external instrumentation (remote after installation).

• Scientific support for supervision and analysis of collected data (physical, remote).

• Unlimited observations and measurements as long as they do not interfere with other projects or instruments availability

  SERVICE STATUS: The service will be offered after 2026. The service is currently provided depending on the ATMOS-NOA equipment availability (transport of instrument from Athens to Antikythera). 

  TIME CONSTRAINTS: None for remote access. Limited physical access during the  November-March period. 

The remote island of Antikythera in Greece, is a unique marine observatory, being frequently affected by desert dust outbreaks while no significant human activities occur at a distance shorter than 70 km from the site.

The site can be used for training purposes on aerosol and trace-gases in-situ measurements. The site is designed to be operational after 2026 for aerosol and trace gases (including greenhouse gases) in situ atmospheric measurements by combining state of the art online and offline techniques (sampling). Currently, equipment from ATMOS-NOA is transferred to the site by means of the NOA mobile unit to cover the access needs. Training can be offered during research projects and/or instrument testing/comparison (physical access).

The service includes:

• Support for accessing facilities (physical).

• Advice for managing accommodation near the site.

• Provision of workspace for visitors: desk space and internet access (physical).

• Training/hands-on for young scientists/research/ technical personnel on in-situ instrumentation (physical)

• Scientific support for supervision and analysis of collected data (physical, remote).

  SERVICE STATUS: The service will be offered after 2026. The service is currently provided depending on the ATMOS-NOA equipment availability (transport of instrument from Athens to Antikythera). 

  TIME CONSTRAINTS: None for remote access. Limited physical access during the November-March period. 

Measurement campaigns enabling the determination of atmospheric aerosol properties using in situ measurements (aethalometer, nephelometer, ultrafine and fine particle distribution spectrometers) and remote sensing techniques (high-power aerosol lidar, photometers) allow for the characterization of aerosol properties. These measurements will be supplemented with data on the concentrations of gaseous pollutants, such as NOx (NO, NO2), ozone, suspended particulate matter (PM10, PM2.5), and aerosol chemical composition analysis based on gravimetric measurements.

At the WOPAS platform, comprehensive meteorological measurements are conducted, including the radiation balance in the longwave and shortwave ranges, precipitation intensity and type using an optical disdrometer, wind speed and direction, and temperature gradient measurements up to 14 m above ground level on a meteorological tower. Additionally, the structure of the lower part of the boundary layer is studied using SODAR.

Furthermore, the WOPAS team has extensive experience in modeling atmospheric processes using models such as WRF, WRF-Chem, EMEP, u_EMEP, and ADMS. Methods for applying machine learning in air quality modeling are also being developed.

The campaigns provide data for urban air quality assessments, enabling evidence-based decisions for e.g. health impact assessment, air quality management, and deeper insight into processes favoring haze events.

The atmospheric boundary layer (ABL) is one of the fundamental part of the atmosphere influencing e.g. air quality, substance transport, etc. In middle latitudes, during radiative weather conditions, it is characterized by typical variability resulting from changes in the radiative balance. Despite the importance of proper parameterization of the boundary layer, particularly in determining the depth of the mixing layer, errors generated by meteorological models can reach up to 100%. Therefore, it is especially crucial to develop an appropriate methodology to fully describe the dynamics of the ABL.

The goal of the measurement experiment is to integrate lidar, sodar, drone, and ground-based measurements to verify assumptions regarding the depth of the mixing height and validate results from atmospheric models. At WOPAS, continuous measurements are conducted using high-power aerosol lidar, monostatic Doppler minisodar, vertical profile measurements with a prototype measurement head installed on a drone, and comprehensive meteorological observations. The integration of multiple measurement methods ensures a robust understanding of ABL dynamics, aiding in the refinement of meteorological models and their outputs, particularly in urban and rural settings

Intercomparison campaigns. Comparison, testing, exploitation of any measurement devices with WOPAS instruments that follow ACTRIS protocols (both in-situ and remote-sensing aerosols measurements)  or meteorological equipment. Campaigns can include the testing of usefulness for mobile measurements. These campaigns help users ensure compliance with measuring standards, improve device calibration, and build capacity through hands-on experience.

Measurement campaigns aim to analyze the variability of plant pollen in the urban atmosphere and its coexistence with air pollutants to determine potential adverse health effects. The planned measurements will include in-situ observations (using the Swissens Poleno Jupiter automatic pollen analyzer and the Burkard-type manual pollen trap) as well as lidar measurements utilizing the fluorescence channel.

An important supplement to stationary measurements can be mobile measurements of atmospheric environment parameters (e.g. air pollution, meteorological and biometeorological parameters, etc.). Such measurements can be performed using drones, car platforms, bicycles and other similar vehicles, as well as on foot. The experience of the team of the WOPAS indicates that the results of such measurements can be used, among others, for recognition of spatial variability of measured parameters on a local and micro scale, recognition of variability of measured parameters outside the area covered by stationary measurements, indication of areas particularly exposed to hazards related to the atmospheric environment.

Within these services, the WOPAS team offers both urban oriented measurements and measurements in mountain areas. Moreover during campaigns the usefulness of sensors can be tested. Mobile measurements provide unique insights into spatial and temporal variability of atmospheric parameters, identifying hotspots and supporting tailored mitigation strategies in both urban and challenging mountainous environments.

This service consists of conducting experiments and performing comprehensive analysis of both optical and microphysical aerosol properties, provided by manual or automated data analysis with the use of certified ACTRIS tools, and tools developed at WOS Facility assuring the highest levels of data products.         The WOS facility offers expert knowledge on the atmospheric aerosol optical properties of different aerosol types (e.g. biomass burning aerosol, mineral dust), especially transported over long distances. We offer to perform experiments and analyses with a use of a wide range of measurement techniques and data analysis approaches. For interpretation of the obtained results WOS facility team applies different transport models (HYSPLIT, FLEXPART) and aerosol prediction models (NAAPS, Barcelona Dust Forecast Center), as well as the MODIS imagining to spot the wildfires. WOS facility researchers/technicians have deep, documented with the research projects, experience in biomass burning aerosol studies including analysis of the fresh and aged BBA in the fine temporal and spatial resolution as well as their impact on the Earth radiative transfer. The interface PROfiler developed at WOS allows for efficient and insightful comparative studies of the aerosol layers. The microphysical parameters in BBA layers are being successfully retrieved with the mathematical inversion methods. The remote sensing of the BBA at WOS is supported by in-situ measurements of black carbon and photometer/spectrometer measurements in column of the atmosphere. In case of mineral dust retrievals we offer additional data products such as the mineral dust separation including the apportionment of fine and coarse mode of aerosol (POLIPHON). For distinguishing between agricultural dust and pollen contribution in the boundary layer in-situ pollen detection is being applied. Thanks to inversion of lidar/photometer data WOS can provide the particle size distribution of mineral dust particles. Expertise and algorithms for aerosol cloud interactions might be provided thanks to the synergy of different aerosol and cloud remote sensing instrumentation.

TIME CONSTRAINTS: The remote and physical access of the external users at the WOS facility must be discussed and planned with the PI of WOS and the TNA coordinators. External users are allowed to access WOS observatory only under WOS personnel supervision, prior to their registration in the Visitor System. The user must go via HPS training prior to accessing the WOS facility.