Nikola Besic

Interested in working with a fun and inspiring team? We are looking for a new PhD (mountain forest management) and PostDoc (forest adaptive capacity, w/ @juditlecinadiaz.bsky.social)

Comes along with:
🧗🏻‍♀️ mountain/ sport buddies
🙃 good + bad jokes
☕️👬amazing social time
💭 great ideas and conversations

Keep sciencing. We are living through a time when looking at a rock and wondering how old it is qualifies as an act of resistance.

#Archives2025 👉En France, la baisse des émissions de gaz à effet de serre prévue en 2025 n’est que de 0,8 % selon le baromètre du Citepa. Un chiffre jugé alarmant par le climatologue Jean Jouzel, qui dénonce un « relâchement » général.

➡️ https://go.publicsenat.fr/Gy7

[Replay] Séminaire de Valérie Masson-Delmotte - LSCE Valérie Masson-Delmotte présente les principales conclusions du dernier rapport du Haut Conseil pour le Climat : "Relancer l'action climatique face à l'aggravation des impacts et à l'affaiblissement d...

Replay et diapos du séminaire sont disponibles (lien 🎥)

@valmasdel.bsky.social revient sur les principales conclusions du dernier rapport du @hc-climat.bsky.social qui a été présenté puis remis au premier ministre la semaine dernière.

www.lsce.ipsl.fr/replay-semin...

@cea.fr @ipsl.bsky.social

Human influence on Amazon’s aboveground carbon dynamics intensified over the last decade - Nature Communications New high-resolution datasets for the Amazon forest show a loss of carbon in 2010-2020, with gains by forest growth outweighed by losses by deforestation and degradation. Human losses intensified over ...

Human influence on Amazon’s aboveground carbon dynamics intensified over the last decade.

www.nature.com/articles/s41...

La couv de Libe de demain
Titraille bien triste

🛠️ Try the tool: zenodo.org/records/1531...

Congrats again to @gbrldst.bsky.social for leading this important step toward more accurate and flexible flux measurements!

#EnvironmentalMonitoring #CarbonCycle #EcosystemFluxes #Wavelets

(5/5)

📍 At the Hesse forest site (FR-Hes @icos-ri.eu), this method reveals:
– higher summer carbon uptake (+2 ± 1 µmol/m²/s)
– better nighttime respiration estimates
– strong agreement with standard EC

Implemented in TurbulenceFlux.jl (Julia)

(4/5)

@gbrldst.bsky.social introduces a wavelet-based method to analyze turbulent fluxes in time & frequency, using a metric based on the vertical Reynolds stress tensor to adaptively localize turbulence.
This helps separate turbulence from advection.

(3/5)

🌍 Flux towers are essential for tracking CO₂, water vapor, and heat exchange between ecosystems and the atmosphere.
But traditional 30-min eddy-covariance averaging often misses rapid responses to environmental change.

(2/5)

Turbulent transport extraction in time and frequency and the estimation of eddy fluxes at high resolution Abstract. We introduce a novel framework for estimating eddy fluxes using cross-scalogram smoothing, addressing key limitations of the standard eddy-covariance method. The standard approach suffers fr...

🌱 New publication 🌱

Excited to share a study led by @gbrldst.bsky.social, now out in AMT:
"Turbulent transport extraction in time and frequency and the estimation of eddy fluxes at high resolution"
w/ myself, @e-joetzjer.bsky.social & @mcuntz.bsky.social

📄 amt.copernicus.org/articles/18/...

(1/5)

This image features part of Bolivia. This vibrant image was created using the radar instrument’s different polarisation channels, with each colour revealing distinct characteristics of the landscape. For instance, green hues mainly represent rainforest, red hues forested floodplains and wetlands, and blue–purple is indicative of grasslands, while black areas are rivers and lakes. The image spans approximately 90 km along the Biomass satellite's flight path (length) and 60 km across in width, with north oriented to the right.

🆕 The first stunning images from our groundbreaking #Biomass satellite mission have been released – they mark a major leap forward in our ability to understand how Earth’s forests are changing and exactly how they contribute to the global carbon cycle 🌳🌍

www.esa.int/Applications...

"La France ne s'adaptera pas à un réchauffement climatique de +4°C"
Intervention magistrale de @cassouman40.bsky.social . Chaque phrase prononcée est précise et lourde de sens. Un discours lucide sur le service public qui mériterait d'être entendu de tous les Français.

Schematic diagram showing the major axes of tree crown architecture

So excited to finally share our new paper charting the global spectrum of tree crown architecture, out today at @natcomms.nature.com ‬🧪🌐

Paper link 🔗: www.nature.com/articles/s41...

A brief thread of what we found 🧵

An outlook on the Rapid Decline of Carbon Sequestration in French Forests and associated reporting needs In this study, we present and discuss changes in carbon storage in the French forests from 1990 to 2022, derived from CITEPA statistics on forest carbon accounting, fed by National Forest Inventory (N...

Check out our preprint currently under review at Comptes Rendus. Géoscience - Sciences de la Terre (French Academy of Sciences).

We examine the current state of the French forest carbon sink and discuss how to enhance carbon sink quantification in the near future.

arxiv.org/abs/2505.11512

High-income groups disproportionately contribute to climate extremes worldwide - Nature Climate Change While climate injustice is widely recognized, a quantification of how emissions inequality translates into unequal accountability is still lacking. Here researchers examine how affluent groups disproportionately contribute to the increase in mean temperature and the frequency of extreme events.

High-income groups disproportionately contribute to climate extremes worldwide - Nature Climate Change

🤩💚

Hi folks! Make sure to have a look at this cool work - it introduces a framework for producing 1.5 m-resolution canopy height maps across metropolitan France, opening the door to numerous exciting applications.

@loicland.bsky.social @ciais-philippe.bsky.social

😍

Mission Biomass : un satellite pour mieux comprendre comment les forêts stockent (et émettent) du carbone La mission Biomass décollera de Kourou (Guyane), le 29 avril. Elle permettra de cartographier la végétation à la surface de la Terre, notamment pour affiner les bilans carbone liés à la déforestation.

Mission Biomass : un satellite pour mieux comprendre comment les forêts stockent (et émettent) du carbone

Antigone - un spectacle librement inspiré du texte de Jean Anouilh, mise en scène Virginie Wittmer (l’atelier du Grenier - Cie du Sens Caché).

À bientôt ;)

[2/2]

Coucou 🎭

Pour celles et ceux qui n’ont pas réussi à nous voir en avril, on revient sur scène en juin :

- le 13/6 à Malzéville,
- le 14/6 à Toul,
- le 25/6 à Laître-sous-Amance,
- et le 26/6 de retour à la MJC Bazin (Nancy) :)

[1/2]

@ciais-philippe.bsky.social @julenastigarraga.bsky.social @verusky.bsky.social

Simpler, Smarter, Stronger: Workshop on Incorporating EEO into Land Surface Models - Lemontree The LEMONTREE team and invited guests recently met at Dartington Hall to explore how Eco-Evolutionary Optimality theory can simplify and strengthen Land Surface Models.

🚨 New blog! 🌱🌍
What happens when 18 scientists gather in a medieval hall to rethink Land Surface Models using Eco-Evolutionary Optimality?
Find out 👉 research.reading.ac.uk/lemontree/si...
#EEO #LandSurfaceModels #LEMONTREE

🔗 drive.google.com/file/d/1ToeT...

N’hésitez pas à commenter / à me dire ce que vous en pensez si vous avez un moment !

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Bonjour 🙂

On m’a proposé d’écrire un p'tit édito pour la ✉ biannuelle du labo… et disons que je me suis un peu laissé emporter par la 🖋. 😄

Je voulais donc vous partager cette petite réflexion – pas méga structurée, mais j’espère intéressante – sur les obs forestières à très haute résolution.

1/2

Canopy height and biomass distribution across the forests of Iberian Peninsula - Scientific Data Scientific Data - Canopy height and biomass distribution across the forests of Iberian Peninsula

🛰️🌳 New Publication :)

Huge thanks to Yang, Philippe, and all co-authors for this fantastic collaboration, resulting in high-res canopy height (10 m) and biomass (50 m) maps for Iberian forests (2017–2021), using a DL framework fusing Sentinel-1, Sentinel-2 & LiDAR.

➡️ www.nature.com/articles/s41...

Pour imposer leur politique agressive, les dirigeants comme Trump ou Poutine s’appuient sur les ressources naturelles de leur pays.

L’économiste Philippe Delacote propose la sobriété comme moyen de résistance.

Lire l'article ➡️ https://l.reporterre.net/S3I

Graphical summary of 10 quick tips to get started with Bayesian statistics and how they fit into a larger view of an analytical workflow with Bayesian models.

🚨🎉 New paper "Ten quick tips to get you started with Bayesian statistics", hope you'll like it 😇🤗

✍🏽 w/ Andy Royle, Marc Kéry and Chloé Nater

🔗 dx.plos.org/10.1371/jour...

@plos.org @cnrsecologie.bsky.social @cnrsoccitanieest.bsky.social @umontpellier.bsky.social

Come and work with us! @thissideofthearctic.org, Ane Vollsnes and I have a very fun PhD position available at the Univ. of Oslo, investigating the plant hydraulics of cold tolerance with models and some pretty novel experiments. :)