Andreas Christen (@envmet) header
Andreas Christen (@envmet) profile picture

Andreas Christen

@envmet

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

 Freiburg im Breisgau, Germany
meteo.uni-freiburg.de
Joined September 2015
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Photo by Andreas Christen (@envmet)Photo by Andreas Christen (@envmet)Photo by Andreas Christen (@envmet)Photo by Andreas Christen (@envmet)Photo by Andreas Christen (@envmet)Photo by Andreas Christen (@envmet)Photo by Andreas Christen (@envmet)Photo by Andreas Christen (@envmet)Photo by Andreas Christen (@envmet)Photo by Andreas Christen (@envmet)
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).
Image from Sung Ching (Nick) Lee (@sclee_micromet)
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Andreas Christen retweeted
Simon Schrodi (@SimonSchrodi) profile picture
Simon Schrodi@SimonSchrodi8 Dec 2023
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.
Image from Simon Schrodi (@SimonSchrodi)
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Am 20.11. startet das Format „40 Minuten Freiburg 2040“ mit @envmet & Verena Hilgers. Spontane Teilnahme möglich, aufgrund begrenzter Plätze wird um Anmeldung gebeten: ufr.link/40minuten-stadtklim… Weitere Infos zur Reihe: uni-freiburg.de/40minuten/
Image from Universität Freiburg (@UniFreiburg)
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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 ➡️ buff.ly/3teBbYF
Figure from paper. Caption: A 30 m resolution ecosystem classification map for Fish Island created following methods outlined in Skeeter (2022). The ecosystem classification was created using a multiyear composite (2015–2022) of LANDSAT8 data obtained from Google Earth Engine and a random forest model trained on areas representative of each ecosystem type. The training area for each ecosystem type was 6.5 ha. The inset in the top right shows a larger scale map of the automated weather station (AWS) and the eddy covariance (EC) station in 2017 along with the boundaries of the 90% cumulative flux footprint for the EC station. Both the main map and inset in the top right are in NAD 1983 UTM Zone 8N. The inset in the top left shows the site's location in the broader Arctic region, using a shapefile of the circumpolar land areas obtained from the Circumpolar Arctic Vegetation Map (Walker et al. 2005). This inset is in the WGS 1984 North Pole Lambert Azimuthal Equal Area coordinate system.

ALT Figure from paper. Caption: A 30 m resolution ecosystem classification map for Fish Island created following methods outlined in Skeeter (2022). The ecosystem classification was created using a multiyear composite (2015–2022) of LANDSAT8 data obtained from Google Earth Engine and a random forest model trained on areas representative of each ecosystem type. The training area for each ecosystem type was 6.5 ha. The inset in the top right shows a larger scale map of the automated weather station (AWS) and the eddy covariance (EC) station in 2017 along with the boundaries of the 90% cumulative flux footprint for the EC station. Both the main map and inset in the top right are in NAD 1983 UTM Zone 8N. The inset in the top left shows the site's location in the broader Arctic region, using a shapefile of the circumpolar land areas obtained from the Circumpolar Arctic Vegetation Map (Walker et al. 2005). This inset is in the WGS 1984 North Pole Lambert Azimuthal Equal Area coordinate system.

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Andreas Christen retweeted
Urbisphere (@urbisphere) profile picture
Urbisphere@urbisphere1 Sep 2023
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
Image from Urbisphere (@urbisphere)
Image from Urbisphere (@urbisphere)
Image from Urbisphere (@urbisphere)
Image from Urbisphere (@urbisphere)
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Andreas Christen retweeted
Urbisphere (@urbisphere) profile picture
Urbisphere@urbisphere25 Jul 2023
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
Image from Urbisphere (@urbisphere)
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Andreas Christen retweeted
Urbisphere (@urbisphere) profile picture
Urbisphere@urbisphere16 Jun 2023
Prof. Dr. Andreas Christen and his team from the #UniFreiburg have installed a network of measuring stations that document weather and #climate differences in the ​​Freiburg city, contributing to the @urbisphere project. App for accessing data: ufr.link/stadtklima @envmet
Universität Freiburg (@UniFreiburg) profile pictureUniversität Freiburg@UniFreiburg15 Jun 2023
Team um Prof. Dr. Andreas Christen, Professor für Umweltmeteorologie der #UniFreiburg, installiert Netz von Messstationen, das Unterschiede bei Wetter und #Klima im Stadtgebiet @freiburg dokumentiert. Daten sind jetzt für alle via App abrufbar: ufr.link/stadtklima @envmet
Image from Universität Freiburg (@UniFreiburg)
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Andreas Christen retweeted
ICOS RI (@ICOS_RI) profile picture
ICOS RI@ICOS_RI13 Feb 2023
The eddy covariance tower in Zurich's city centre has now been operational for six months. The ICOS Cities research team has detected interesting CO2 flux patterns both seasonally and spatially. Read more about the results: icos-cp.eu/event/1269
Image from ICOS RI (@ICOS_RI)
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Andreas Christen retweeted
RI-URBANS (@RI_URBANS) profile picture
RI-URBANS@RI_URBANS20 Oct 2022
Andreas Christen @envmet explains @ICOS_RI pilot studies developed in Paris, Munich, and Zurich at the #RI_URBANS 1st Science Meeting, as a way to promote collaboration between both projects for the pilot cities demonstrations. #H2020 @EUgreendeal
Image from RI-URBANS (@RI_URBANS)
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This week, @FridMartina and @BethSaunders182 write about the @urbisphere project. 🏙️ Read more to find out about their contributions to the field campaign in Berlin! socialmetwork.blog/2022/09/3…

Urban observations in Berlin

Martina Frid – [email protected] Beth Saunders – [email protected] Introduction  With a large (and growing) proportion of the global population living i…

socialmetwork.blog
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Andreas Christen retweeted
DWD (@DWD_presse) profile picture
DWD@DWD_presse28 Sep 2022
Bei Session 5 des #ExtremWetterKongress22 geht es um "Generationen im Dialog - Das Weltklima als Generationsvertrag". Prof. Dr. Andreas Matzarakis erklärt die Auswirkungen des #Klimawandel|s auf die Gesundheit. Zum Livestream: youtube.com/watch?v=u0U-sUwa… 👉 dwd.de/ewk
Image from DWD (@DWD_presse)
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Last week we installed a MIRO MGA7-GP on the Hardau tower 100m above Zurich. The analyzer monitors CO2, CO, N2O, CH4, H2O, NO, NO2 all simultaneously and at 10Hz. Can’t wait to see the first results from this amazing instrument. @wlkutsch @ICOS_RI @envmet #ghg #AirPollution
Image from MIRO Analytical (@AnalyticalMiro)
Image from MIRO Analytical (@AnalyticalMiro)
Image from MIRO Analytical (@AnalyticalMiro)
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Andreas Christen retweeted
RSlabGr (@SlabGr) profile picture
RSlabGr@SlabGr11 Aug 2022
@RSlabGr has just concluded a 10-days in-situ/drone/airborne/satellite campaign at Berlin for @urbisphere, @ERC_Research. Many thanks to @envmet, @SueGrimmond, @BirkmannJoern and their teams for collaborating, as well as to @TUBerlin, @satellitevu and @NASAJPL for supporting us.
Image from RSlabGr (@SlabGr)
Image from RSlabGr (@SlabGr)
Image from RSlabGr (@SlabGr)
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PDRA : Building to Urban Boundary Layer scale Meteorology jobs.reading.ac.uk/displayjo…
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PDRA: Next generation weather modelling in cities jobs.reading.ac.uk/displayjo…
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Andreas Christen retweeted
C Werner Lab (@c_werner) profile picture
C Werner Lab@c_werner27 May 2022
Super happy and excited: our #ECOSENSE SFB got funded! New ways to assess and model spatio-temporal dynamics in forest by smart autonomous sensor networks. Much looking forward to this excited team from @uni Freiburg and @KIT and my co-leader Ulrike Wallrabe (@IMTEK).
Image from C Werner Lab (@c_werner)
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2022 Timothy Oke Award by the @IAUrbanClimate - Please nominate early- and mid-career researchers who have conducted original research with high impact in the field of urban climate science until May 27, 2022. urban-climate.org/awards/cal…
Image from International Association for Urban Climate (@IAUrbanClimate)
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Spatial variations of the urban boundary layer – what are the feedbacks from anthropogenic heat fluxes? PhD position Supervisors: @SueGrimmond @UniRdg_Met Met Office: @hwlean, Sylvia Bohnenstengel, Joelle Buxmann @urbisphere @envmet 1/
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3-year PDRA jobs.reading.ac.uk/displayjo… Be involved in exciting urban meteorological research being undertaken by multi-disciplinary teams developing, evaluating and applying the next generation of weather and climate models. @UniRdg_Met @janetfbarlow @envmet @urbisphere
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!!HEUTE!! Freiburg 2038 – Wie wappnen wir uns für den #Klimawandel ? Online #FRIAS Kamingespräch mit @OBMartinHorn und Expert:innen der @UniFreiburg Prof. Dr. Daniela Kleinschmit, @envmet und YAS-Mitglied @RikeSinder 18:00h Zoom/Livestream Log-in: bit.ly/3s3o5ZS
Image from Freiburg Institute for Advanced Studies (FRIAS) (@FRIAS_UFreiburg)
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