the goal of the meeting is to exchange and discuss on aerosol profile retrievals from automated lidars and ceilometers (ALCs). This topic was suggested within the E-PROFILE community. The PROBE working group 2 has been chosen as well-suited platform for exchange.

A meeting to discuss quality control and variations in optical overlap model of CHM15k

Using ground-based remote sensing, high-quality profile observations in the atmospheric boundary layer (ABL) are increasingly becoming available at high temporal and vertical resolution. These profiles of temperature, humidity, wind, turbulence, and aerosol characteristics are exploited to create advanced products for a variety of studies and applications.

A subgroup meeting to discuss the status of implementation of automatic methods for absolute calibration and progress in understanding what drives temporal variations in calibration coefficients of ALC instruments.

The distinct surface characteristics of urban areas (roughness, heat, moisture) affect processes in the atmospheric boundary layer. The resulting Urban Boundary Layer (UBL) dynamics have implications for a range of applications, including air quality, human thermal comfort, weather, greenhouse gas assessment, and urban air mobility. As cities are key to both climate change mitigation and adaptation, advanced observations of the urban atmosphere are urgently needed to support informed decision making.