Reports

I am Bharath Krishnan, a doctoral researcher in subproject W6, “Spectral Energy Fluxes by Wave-Wave Interactions,” at the Leibniz Institute of Atmospheric Physics (IAP) in Kühlungsborn. My research focuses on mesoscale energy transfers in regional domains within the mesosphere and lower thermosphere (MLT). Various fundamentally different theories, ranging from gravity waves to stratified turbulence and wave-vortex interactions, have been proposed to explain the mesoscale dynamics. However, the role of gravity wave breaking and its associated energy transfers in the upper atmosphere remain relatively underexplored. To gain deeper insight into gravity wave dynamics and share my recent findings, I participated in the 6^th Gravity Wave Workshop in Prague from August 24^th to 26^th. 

The workshop was organized by the Gravity Wave group at Charles University, Prague, to bring together experts and early-career researchers investigating various aspects of gravity wave dynamics in the atmosphere. The event featured many insightful talks and poster presentations that I thoroughly enjoyed. I also presented my work as an oral presentation on “Mesoscale Energy Transfers in Regional Domains of Gravity-Wave Resolving Simulations.” It was inspiring to see experts from around the world focusing on this specialized field and sharing their latest findings. Since my research involves implementing a method to study mesoscale dynamics, it was particularly valuable to discover the different approaches others are using to analyze these processes from distinct perspectives.

Beyond the scientific sessions, my first visit to Prague was an unforgettable experience. I enjoyed trying a variety of delicious dishes while catching up with colleagues and making new friends. A real highlight was the evening boat cruise along the Vltava River; watching the sunset light up the city’s skyline, iconic landmarks, and its famous bridges, including the iconic Charles Bridge, was beautiful. Exploring the city on foot was just as special; strolling through Prague’s historic streets late at night under the warm, yellow glow of the streetlights gave the romantic city a magical feel. Overall, I had a wonderful time making new connections and soaking in the unique charm of Prague, and I will definitely be coming back.

I would like to thank the entire Gravity Wave group at Charles University for hosting such a wonderful event with a relaxed environment for informal yet productive scientific discussions. My thanks also go to everyone who provided valuable feedback and guidance both before and during the workshop. Furthermore, I would like to thank TRR 181 and IAP for funding my trip.

California Dreamin’

Nods, smiles… How’re the waves? This is the perfect conversation starter for an oceanographer spending the summer in California. Hella chillin, bro!

But let’s get to business… Just a little, after I’ll tell you about the fun part. During the summer of 2023 I spent almost two months at Scripps Institution of Oceanography in San Diego, California. The decision came to life after a brainstorming session with my supervisor on who (a topic-wise related and experienced researcher) and where (an oceanographic institute that could open new doors) could I visit, that could provide further, new, groundbreaking, specialized, state-of-the-art insights about internal gravity waves and their interaction with the background environment. And the winner was … (drum roll, please) Prof. Dr. William R. Young! After developing and proposing a feasable working structure for the research stay and several meetings…, after applying for the visa, finding accomodation, working myself through a whole load of paper work and packing my bags…, I was finally ready to catch this wave, ride it out, and let the californian vibe wash over me.

I went to the US with a clear and clean research topic, but as in surfing, sometimes it’s better to let the wave tune you into the right direction. During long eye-opening discussions with Prof. Young we stumble upon an unresolved problem within the direction of the scope of my dissertation, so we decided to reformulate the research question of my upcoming work.  Within the two months at Scripps I had the chance to get to know other PhDs, PostDocs and professors from various research disciplines. I took advantage and attended seminars offered by both visiting as well as in-house researchers. I joined social events organized by the institute. And I got the great opportunity to present my work, discuss my interests and raise awareness of the research done within TRR181. But most importantly, I came back to Hamburg with far more new and exciting research questions to be answered!

What I liked best?

I arrived in San Diego just on time for ‘May Gray and June Gloom’ with cloudy and cool weather, but we slowly drifted into the summer season with plenty Sunkissed mornings and sunset wave rides. These together with endless nature getaways, road trips around Southern California and the legendary TGF were the highlights of this amazing journey! There remains naught else for me to express but my gratitude to the TRR181.