Andreas Christen

Professor of Environmental Meteorology @UniFreiburg | Airflow, greenhouse gases, climate change in urban & natural systems. Moved to @envmet at bluesky.

[Andreas Christen @envmet]

I am no longer posting on X. Happy to stay connected over Bluesky https://t.co/O66Lgih4Du and/or LinkedIn.

[Andreas Christen @envmet]

Ahead of print in BAMS @ametsoc - @urbisphere campaign in Berlin - Our joint effort funded by @ERC_Research to study and model urban impacts on the atmosphere by @UniFreiburg @UniRdg_Met @SlabGr @Uni_Stuttgart @TUBerlin @DWD_klima @MetOffice_Sci & others https://t.co/PHdW45SEBf

[Andreas Christen @envmet]

Can artificial intelligence assist climate adaptation in cities? Our collaborative @UniFreiburg and @Fraunhofer project 'I4C' developed hyper-local deep-learning models to map and reduce heat across entire cities in support of urban planning in @Freiburg https://t.co/KKiFKWeIvI

[Andreas Christen @envmet]

Our new preprint @EuroGeosciences presents a modular approach to near-time data management for observation campaigns on weather and climate in cities - Developed @unifreiburg, @UniRdg_Met and @SlabGr and deployed as part of @urbisphere in multiple cities. https://t.co/p6nO1HHiHl

[Andreas Christen @envmet]

Always great to see 1st day of data from a newly installed eddy covariance system! We just started operation of our new 45 m #ECOSENSE tower - measuring CO2 fluxes from a mixed forest in @dfg_public CRC. Amazing effort by technicians, admins, students & researchers @UniFreiburg.

[Andreas Christen @envmet]

Using a 3D fibre-optic temperature sensing array in the Namib, we empirically investigated Taylor’s Hypothesis in the atmosphere. In our new article in Boundary-Layer Meteorology we show that small eddies systematically travel slower than large eddies. https://t.co/khvI9dDesC

[Andreas Christen @envmet]

Presenting today our @ERC_Research Synergy Grant @urbisphere to Minister of Science, Research and Arts @OlschowskiPetra @mwk__bw as a best practice project for @HorizonEU. We @UniFreiburg and @Uni_Stuttgart collaborate with European Partners to resolve cities in climate models.

[Andreas Christen @envmet]

New paper in @EGU_GMD on our machine learning model developed @UniFreiburg for mapping heat stress in cities - faster & with comparable accuracy to physical models it enables multi-year simulations at 1m scale for entire cities @freiburg @urbisphere #I4C https://t.co/WaWP2i0Y8C

[Andreas Christen @envmet]

Indoor climate change? Yes - not only outdoors but also indoors, heat increases and affects health & productivity. Our work @UniFreiburg published in @ClimaticChange_ uses sensors & climate models to assess future heat stress at 100+ workplaces @urbisphere https://t.co/AESw9JDLuG

[Andreas Christen @envmet]

Our year-long @urbisphere campaign in Paris comes to an end. This week, the @UniFreiburg team launched parallel radiosoundings in city & suburbs. With @SueGrimmond @SlabGr @simoneKotthaus and @MPAHaeffelin we study how cities modify winter inversions that cause poor air quality.

[Andreas Christen @envmet]

2023 was the warmest year ever measured in the 46 year-long history of our @ICOS_RI forest research site Hartheim @UniFreiburg. 2023 was +1.6ºC over the long-term average. 3 out of last 4 years were warmer and drier, causing accelerated mortality of trees. https://t.co/RSQljacjaU

[Sung Ching (Nick) Lee @sclee_micromet]

Great honour to give a keynote talk at #Asiaflux2023. Thanks a lot for the invitation (met lots of great people!), also thanks my group members, collaborators, and especially my mentors (@envmet, @Reichstein_BGC, Sara, Andy).

[Simon Schrodi @SimonSchrodi]

Excited to present “Climate-sensitive Urban Planning through Optimization of Tree Placements” w/ Ferdinand Briegel, Max Argus, @envmet & @ThomasBrox at the #NeurIPS2023 @ClimateChangeAI workshop. Tl;dr: we optimize urban tree locations for improved outdoor human thermal comfort.

[Universität Freiburg @UniFreiburg]

Am 20.11. startet das Format „40 Minuten Freiburg 2040“ mit @envmet & Verena Hilgers. Spontane Teilnahme möglich, aufgrund begrenzter Plätze wird um Anmeldung gebeten: https://t.co/vccnZzQeke
Weitere Infos zur Reihe: https://t.co/50nVvjWKkL

[Arctic Science Journal @ArcticScienceJ]

Modelling growing season carbon fluxes at a low-center polygon ecosystem in the Mackenzie River Delta

Read the paper from @envmet (@UniFreiburg) and @UBCGeog colleagues ➡️ https://t.co/MaIIo9v0Le

[Urbisphere @urbisphere]

Prof. Dr. Andreas Christen and Dr. William Morrison from @UniFreiburg presented @urbisphere research concerning #Berlin and #Paris at the 11th International Conference on Urban Climate @ICUC11Sydney @envmet @ERC_Research #cities #climate #h2020 #ERCSyG

[Urbisphere @urbisphere]

The #urbisphere annual partner meeting is taking place in #Paris at the #SIRTA Atmospheric Observatory. Discussions for the developments and future plans are ongoing!
@NChrysoulakis @SueGrimmond @envmet @BirkmannJoern #urbanization #climatechange #adaptation

[Andreas Christen @envmet]

This week, a new eddy-covariance supersite has been installed in @Paris by @INRAE_France #LSCE @MPI_BGC @UniHeidelberg and @UniFreiburg. In our @ICOS_RI Cities @HorizonEU project we develop new methods measuring and attributing greenhouse gas emission reductions in EU cities.

[Andreas Christen @envmet]

The @eucor #MobiLab roadshow vists @Freiburg this week. Can artificial intelligence inform and support cities in developing effective climate adaption strategies? We feature our project "I4C - Intelligence for Cities" @UniFreiburg on June 29 and 30 at Platz der alten Synagoge.

[Andreas Christen @envmet]

Our new paper in @ArcticScienceJ by @UBCGeog and
@UniFreiburg applies neural networks to model carbon fluxes between a polygon tundra and atmosphere: Warming climate reduces carbon uptake and longer growing seasons correlate with stronger methane emissions https://t.co/RikLhzjmWE