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envmet.bsky.social
Professor of Environmental Meteorology at University of Freiburg | Observing and modelling airflow, greenhouse gases, climate change in urban & forest systems. https://www.meteo.uni-freiburg.de/en/team/andreas-christen
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An arcus cloud passed over Freiburg earlier this evening. It was part of a convective system embedded in a cold front. A sharp increase in wind, a drop in air temperature and an unusual pressure jump +2 hPa in just 5 minutes measured @uni-freiburg.de weather station.

submitted 12 days ago • 0 comments

We advertise a new Full Professorship (W3) in Fire Ecology @uni-freiburg.de. Do you work on effects of fires on vegetation biodiversity, functionality, dynamics and fire mitigation? Consider applying to join our vibrant Faculty of Environment and Natural Resources. uni-freiburg.de/en/job/00004...

submitted 21 days ago • 0 comments

Urban Heat Islands are usually associated with heatwaves in summer. But during cold winter nights, they are equally present. Our street-level network @uni-freiburg.de reveals that frost is less likely to occur in the city of Freiburg (24 days per year) compared to the rural surrounding (50-60 days).

submitted 31 days ago • 0 comments

“Scientists brace ‘for the worst’ as Trump purges climate mentions from websites” by Oliver Milman for The Guardian. Read more here: www.theguardian.com/us-news/2025...

submitted 33 days ago • 9 comments

Our new paper in "Ecohydrology" led by @simonhaber.bsky.social describes dynamics of short-term droughts on tree water potentials. We were using new continuous stem water sensors at our @icos-ri.eu site in Hartheim @uni-freiburg.de as part of @ecosense-sfb-1537.bsky.social doi.org/10.1002/eco....

submitted 46 days ago • 1 comment

New @eurogeosciences.bsky.social preprint on our @icos-ri.eu relaxed eddy accumulation system for measuring 14C fluxes. Developed by @uni-freiburg.de, @uniheidelberg.bsky.social and @maxplanck.de, it aims to partition city emissions into fossil fuel and biogenic contributions doi.org/10.5194/egus...

submitted 51 days ago • 0 comments

Field trip with @uni-freiburg.de students to learn about urban climate activities in Basel - Meteoblue.com showcased their city climate services and city wide sensor networks. At @unibas.ch we learned how eddy covariance on towers is used to monitor GHG emission reductions.

submitted 54 days ago • 0 comments

New article in "Sustainable Cities and Society" documents custom-built weather stations to monitor pedestrian-level thermal comfort on street lights. They are part of our city-wide sensor network @uni-freiburg.de to evaluate urban climate models - funded by ERC @ec.europa.eu doi.org/10.1016/j.sc...

submitted 63 days ago • 0 comments

Our new article in @eurogeosciences.bsky.social Geoscientific Instrumentation - How meteorological data streams from diverse instruments, scales, and campaigns are integrated in a data management approach to support urban climate modelling @suegrimmond.bsky.social gi.copernicus.org/articles/13/...

submitted 81 days ago • 0 comments

Honored to receive FLUXNET 2024 Paper of the Year award! Greatly appreciate the recognition of our flux work in BC Canada. A heartfelt thank you to everyone who supported me (Andy, Paul, and many more). #AGU2024 #AGU24 (pc: Sara Knox)

submitted 89 days ago • 0 comments

Our new paper in Urban Climate presents a machine-learning approach to simulate airflow in real urban canopies based on large eddy simulations. Result from recent #I4C project on AI applications in environmental research and collaboration between @unifreiburg and Columbia U. doi.org/10.1016/j.uc...

submitted 97 days ago • 0 comments

First field VOCs measurements using REA and chamber techniques 😄 Can't wait for the results! #ECOSESNSE project @ecosense-sfb-1537.bsky.social @chriswernerlab.bsky.social

submitted 100 days ago • 0 comments

Job: DWL/LAS analysis with NWP jobs.reading.ac.uk/Job/JobDetai... Recent papers relevant to this: doi.org/10.1175/BAMS... doi.org/10.1002/qj.4... doi.org/10.1002/qj.4... Work with the MO/ECMWF/ERC urbisphere /NERC ASSURE at University of Reading. Closing date: 11/12/2024

submitted 105 days ago • 0 comments