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The second ARM (Atmospheric Radiation Measurement) Summer Training and Science Applications event

14 - 21 July 2018, National Weather Center in Norman, Oklahoma, USA

Picture by Leif-Leonard Kliesch

The ARM Summer Training and Science Applications event was intended for graduate students and early career scientists who are interested in observations and modelling of aerosols, clouds and precipitation. It was held at the National Weather Center in Norman and included the tour to the Southern Great Plains (SGP) field measurement site.
This year 24 participants from Germany, Finland, United States and China attended the training event. The training included both theoretical and practical parts. The lectures given by in total 12 researchers during the 6-day training event encompassed:
-the overview of the ARM user facility, ARM data and Python tools for working with the atmospheric data
-the overview of the microwave radiometry and boundary layer profiling
-high latitude cloud systems, arctic amplification and impact of clouds on radiation
-observation of precipitation and precipitation microphysics by radar
-large eddy simulations of the atmospheric boundary layer.
In the practical part of the training six working groups were formed focusing on precipitation microphysics, high-latitude cloud systems, shallow cloud modelling, cloud fraction and liquid water content, and boundary layer studies. On the last day of the event each group presented the results of the project work and we could have more detailed discussion and receive feedback from other participants and instructors.
The working group I joined focused on shallow cloud modelling. In our project work we used the large eddy simulations (LES) based on observations from the Southern Great Plains (SGP) site. We performed a series of LES with various initial conditions and compared the simulations with observations. This work was my first and fruitful experience with the LES and cloud modelling.
During the training event we spend one day participating in a site tour at the ARM Southern Great Plains site. The SGP atmospheric observatory is considered the largest and most extensive research field site in the world. It has seven radar sites and more than 20 in situ and remote sensing instrument clusters arrayed in a 150 x 150-km in north-central Oklahoma and south Kansas. We had the opportunity to visit the Central Facility of the SGP atmospheric observatory and gain a detailed overview of a variety of deployed instruments.
During my recent work I gained experience in working with simulated and real measurements of MWR and Lidar. Thanks to the travel grant provided by the Graduate School of Geosciences I got the chance to participate in the ARM training event and to expand my knowledge about other ground-based active and passive instruments. Especially beneficial for me was the insight into the field of radar observations, precipitation formation and microphysics, and boundary layer and cloud modelling.

Maria Toporov
PhD student
Institute for Geophysics and Meteorology
PhD Project: “ARON-A virtual Remote sensing Observation Network for continuous, near-real-time monitoring of atmospheric instability”