EOL Seminar: The ISOBAR project on stable boundary layers: Experimental setup and first results of two field campaigns in 2017 and 2018 in Hailuoto, Finland

Tuesday, July 17, 2018 - 15:30 to 16:30
Contact Name: 
Dr. Holger Vömel
Contact Email: 
Contact Phone: 

Dr. Joachim Reuder
University of Bergen

The purpose of the research project ISOBAR (Innovative Strategies for Observations in the Arctic Atmospheric Boundary Layer) is to increase our understanding of the Atmospheric Boundary Layer (ABL) in the Arctic. In particular, we aim to study the physical processes governing the turbulent exchange under stable and very stable conditions, which are not well represented in current Numerical Weather Prediction (NWP) and climate models, due to insufficient parameterization schemes for the Stable Boundary Layer (SBL).
Applying new and innovative observation strategies, which include multiple meteorological Remotely Piloted Aircraft Systems (RPAS), in addition to well-established ground based and profiling systems (eddy-covariance masts, sodar, lidar), has provided unique data sets on the turbulent structure of the SBL, with unique spatial and temporal resolution. Supported by Single Column Model and Large-Eddy Simulation experiments, we will use the collected data sets to develop new SBL parameterization schemes and implement them in the state-of-the-art Weather and Research Forecasting model (WRF).
Two field campaigns of about 3 weeks each have been performed in the late winter of 2017 and 2018 at the island of Hailuoto, Finland on the east coast of the Baltic Sea. Eddy-covariance masts (in 2018 one of 10 m height equipped with three levels of sonics and three levels of slow meteorology), sodars and a lidar wind profiler (parts of the 2018 campaign) provided the continuous monitoring during the campaign. Those background measurements have been complemented by the operation of a wide range of RPAS, in particular for atmospheric profiling of standard meteorological parameters and turbulence characteristics, but also for the mapping of surface temperatures and photogrammetry. I will here introduce the slightly different set-up for both campaigns, give an overview on the instrumentation used; reflect on data quality and data availability and present selected first results.

Tuesday, 17 July 2018, 3:30 PM
Refreshments 3:15 PM
NCAR-Foothills Laboratory • 3450 Mitchell Lane
Bldg 2 Small Seminar (Rm1001)
Webcast: https://ucarconnect.ucar.edu/live