Technological services related to cloud and fog properties.
Provision of network-wide accurate calibration of the instruments installed in ACTRIS NFs following harmonized protocols and tools to put all measurements on a common absolute scale. The calibration service could be provided at the TC facility or at NFs, depending on the feasibility. It offers low-uncertainty reference calibration according to robust calibration techniques.
Provision of two detailed measurement guidelines for NFs. One for the observational platforms, one for the exploratory platforms that will be developed for current and updated for future needs.
Scientific exploration at outdoor chambers for the study of atmospheric behavior of biogenic and anthropogenic VOCs, formation of products including ozone and aerosols under near-real conditions (use of natural light & high volume: 200m3) and their impact on the air quality. The chambers are equipped with a wide variety of instruments, also state-of-the-art systems, for that purpose. Intercomparison of instrumentation with the possibility of accommodating a large number of external instruments can be carried out. The facilities are suitable for testing, developing or improving new instruments to measure compounds in the air, testing innovative depolluting solutions relevant to air quality management, etc. In this sense, the facilities can be adapted to specific user’s demands so that researchers and industry can test their research-grade and close-to-market initiatives at nearly-real controlled conditions, which will help them to characterize and enhance their prototypes and technologies, models or research items.
Training stays, bottom-up oriented, within a research topic framework guided by expert staff are welcome.
The ambient cloud in situ measurement campaign is a cross-comparison of cloud in situ measurement instruments with respect to the variables liquid water content and droplet effective diameter. The campaigns focus on the measurement instruments recommended in ACTRIS, such as the PVM. The campaign is organized every two years, with a measurement phase of 3-5 days at Mt. Hohen Sonnblick. During this time the participants are trained in ACTRIS routines and the standards are further developed. A joint report finally summarizes the results. The participants receive a certificate.
1) Calibration of photometer, QA QC support, evaluation of site performances, Traceability, duty cycle increase, development of new instrument and procedure, development of new algorithms, support to campaigns, training
2) Quality assured data, access to all AERONET and ACTRIS data
Calibration of INP instruments
The access to the centralized processing system allows the users to retrieve aerosol optical properties profiles using the same processing chain implemented within ACTRIS.
Research and technological services related to cloud and fog properties.
The CCRES is offering development and delivery of tested and traceable procedures for specific calibration of DCRs and MWRs, possibly including multiple techniques: absolute calibration based on calibrated targets, relative calibration using calibration transfer from a reference instrument, absolute calibration using geophysical targets with known characteristics...
Provision of space and infrastructure to test new instruments. Performance, accuracy, stability and calibration procedures can be assessed by comparing them to established and well-characterized instruments. This service is proposed to NFs and ACTRIS users.
Measurement, Data, and Technological services related to cloud and fog properties.
Data evaluation procedures and plausibility tests developed to evaluate the quality of geophysical parameter retrievals and qualify data before it enters the ACTRIS database. Doppler cloud radar and microwave radiometer data should be sent by NFs to the ACTRIS Cloud Remote Sensing Data Centre. The DC should then be responsible for processing data to produce retrievals of relevant Cloud geophysical properties. Data evaluation, based on various tests should then be implemented to qualify the retrieved data. Methods to test retrieved are established by the TC (e.g. evaluating plausible range, internal consistency, multi-instrument intercomparisons, …) and data evaluation procedures is developed and provided to the DC for implementation. This software is developed as open-access software.