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Giacomo Grassi

@giacgrassi.bsky.social
932 followers 102 following 125 posts

Scientist @EU_Commission's Joint Research Centre. Forests, carbon and climate in the science/policy interface. Member #IPCC task force Bureau #AR7. Views mine.

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Giacomo Grassi @giacgrassi.bsky.social · 17/06/2026
⚔️ Le guerre non distruggono solo il presente. Divorano il futuro, due volte: aumentando le emissioni e distruggendo la fiducia necessaria per ridurle. Ne abbiamo scritto con Matteo Motterlini su @climalteranti.bsky.social www.climalteranti.it/2026/06/11/i...
climalteranti.it
In un clima di guerra, il multilateralismo climatico è ancora vivo
Il vero costo climatico delle guerre non si misura in CO₂, ma in fiducia bruciata: quella tra gli Stati, da cui dipende ogni cooperazione sul clima. Il voto d
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climalteranti.bsky.social @climalteranti.bsky.social · 04/06/2026
Contrariamente a quanto sostengono i negazionisti climatici, negli ultimi 25 anni i rapporti dell’IPCC hanno aumentato la preoccupazione per i rischi climatici che potremo avere in futuro, non www.climalteranti.it/2026/06/03/il-…
climalteranti.it
Il futuro degli impatti climatici non è (ancora?) cambiato, purtroppo
Contrariamente a quanto sostengono i negazionisti climatici, negli ultimi 25 anni i rapporti dell’IPCC hanno aumentato la preoccupazione per i rischi climatic
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climalteranti.bsky.social @climalteranti.bsky.social · 21/05/2026
RCP8.5 è uno scenario estremo usato come stress test nei modelli climatici, ma nella comunicazione è stato spesso scambiato per una previsione del futuro che ci www.climalteranti.it/2026/05/21/com…
climalteranti.it
Come un telefono senza fili può distorcere il dibattito climatico: la storia dello scenario RCP 8.5
RCP8.5 è uno scenario estremo usato come stress test nei modelli climatici, ma nella comunicazione è stato spesso scambiato per una previsione del futuro che
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Giacomo Grassi @giacgrassi.bsky.social · 21/05/2026
🌍 Sul clima e sull’energia il problema non è la mancanza di informazioni. È la mancanza di una percezione aggiornata della realtà. 📰 Ne abbiamo scritto su la Repubblica con Matteo Motterlini www.repubblica.it/commenti/202... #Clima #energia
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Giacomo Grassi @giacgrassi.bsky.social · 23/04/2026
Il sovranismo energetico fa bene al clima ? E poi: ⚡Più energia vuol dire più emissioni? 🌍 Come siamo messi sul clima? •⁠ ⁠🇪🇺 Il Green Deal è una svolta o un boomerang? Di queste e altre domande ho discusso con Francesco Costa, nel suo podcast Wilson. www.ilpost.it/podcasts/wil... #clima
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Giacomo Grassi @giacgrassi.bsky.social · 16/04/2026
Honored to have shared the podium yesterday at the Min. of Environment, Rome, with IPCC Chair Jim Skea. Jim presented IPCC’s ongoing work assessing climate science, while I outlined emerging methodologies for reporting Carbon Dioxide Removal activities in national inventories. @ipcc.bsky.social
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Giacomo Grassi @giacgrassi.bsky.social · 16/04/2026
Honored to have shared the podium yesterday at Min. of Environment, Rome, with IPCC chair Jim Skea. Jim presented the IPCC’s ongoing work assessing climate science, while I outlined emerging methodologies for reporting Carbon Dioxide Removal activities in national inventories @ipcc.bsky.social
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David Ho @davidho.bsky.social · 15/04/2026
@giacgrassi.bsky.social is a Senior Scientific Officer at the European Commission’s Joint Research Centre (JRC). A leading expert on forests and climate, he specializes in LULUCF and greenhouse gas inventories. He is a prominent IPCC author and recipient of the 2020 Bologna Award for Sustainability.
A black and white, close-up portrait shows a man with short gray hair and dark eyes looking directly at the camera with a subtle, pleasant smile. He is wearing a light-colored blazer over a collared shirt and a dark necktie with a small, light-colored patterned design. The background is a blurred outdoor scene with leafy trees.
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Giacomo Grassi @giacgrassi.bsky.social · 16/03/2026
Come comunicare il clima e la transizione energetica? Ne abbiamo parlato con Daniele Scaglione nel suo Podcast "Non so Come Dirtelo" YouTube m.youtube.com/watch?si=0Sj... Spotify open.spotify.com/episode/5HTb... Apple Podcast lnkd.in/dBjhFjsJ #IPCC #cambiamentoclimatico
m.youtube.com
47. Tra scienza e politica - Giacomo Grassi
YouTube video by Spellmedia
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Giacomo Grassi @giacgrassi.bsky.social · 26/02/2026
📣 Postdoc Position: Land Carbon Fluxes & GHG Inventories job-portal.lmu.de/jobposting/b... 🌍 Hosted by the Ludwig-Maximilians-Universität München, includes a up to 2 years at the Joint Research Centre (Italy), ➡️ Unique opportunity to work at the science–policy interface. #ClimateScience
job-portal.lmu.de
Postdoctoral researcher on Reconciliation of land fluxes between global models and national greenhouse gas inventories (m/f/x)
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Giacomo Grassi @giacgrassi.bsky.social · 26/02/2026
🌳 Puzzled by land-use emissions data? ➡️ The LULUCF Data Hub description paper now in discussion: essd.copernicus.org/preprints/es... 🌍 The Hub is an open-access platform that compiles, harmonizes, and visualizes country-level CO₂ fluxes from land use, land-use change and forestry (LULUCF). 1/
essd.copernicus.org
The LULUCF Data Hub: translating global land use emissions estimates into the national GHG inventory framework
Abstract. Global estimates of anthropogenic land use CO2 fluxes from bookkeeping models and dynamic global vegetation models, as well as those derived from Earth observations (EO), can differ widely f...
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Giacomo Grassi @giacgrassi.bsky.social · 16/01/2026
Chi è Lysenko, e cosa c’entra con Trump, l’IPCC e la democrazia? Ne abbiamo scritto nel Il Sole 24 Ore con il filosofo della scienza Matteo Motterlini. Uscire dall'IPCC non significa sottrarsi al riscaldamento globale, così come gettare il termometro non fa sparire la febbre.
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climalteranti.bsky.social @climalteranti.bsky.social · 08/01/2026
www.climalteranti.it/2026/01/05/p... @giacgrassi.bsky.social
climalteranti.it
Perché la nostra mente è l’ostacolo più grande nella lotta al cambiamento climatico
Il cambiamento climatico non è solo una crisi ambientale. È, prima di tutto, una crisi cognitiva. È da questa tesi, tanto semplice quanto scomoda, che prende
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Giacomo Grassi @giacgrassi.bsky.social · 03/01/2026
All’inizio del nuovo anno, può essere utile chiedersi a che punto siamo nella crisi climatica. È una sfida che ci chiede di scegliere insieme la rotta giusta, prima che la fisica decida per noi. Ne abbiamo scritto ne Il Post con il filosofo Matteo Motterlini www.ilpost.it/2026/01/03/g...
ilpost.it
Anno nuovo, clima vecchio - Il Post
Bilancio della rotta del cambiamento climatico dieci anni dopo l’Accordo di Parigi e un mese dopo la COP30
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Giacomo Grassi @giacgrassi.bsky.social · 08/12/2025
Proud to be European ❤️❤️
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Giacomo Grassi @giacgrassi.bsky.social · 23/11/2025
With a mixed-results at COP30 - i.e. good intentions but no concrete plans for the “transition away from fossil fuels” - don’t give up. Let’s remember the progress made since the Paris Agreement and the options ahead of us. That’s the message of the image below
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IPCC @ipcc.bsky.social · 19/11/2025
📣 PRESS RELEASE #IPCC is calling for the nominations of authors for the Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture Utilization and Storage Read the PR 👉 www.ipcc.ch/2025/11/19/c... Submissions close 12 December 2025 🧵 1/3
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IPCC @ipcc.bsky.social · 31/10/2025
#IPCC agrees on the scientific content of the remaining methodology report in the seventh assessment cycle and 2026 workplan for the three key climate reports in Lima, 🇵🇪 Peru. 🔗 www.ipcc.ch/2025/10/31/p... 📸 ENB - IISD - Anastasia Rodopoulou
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Giacomo Grassi @giacgrassi.bsky.social · 13/10/2025
Che la causa del cambiamento climatico siamo noi è in realtà una buona notizia. Spiego il perché nella parte finale (min 17:30) di questa bella puntata di Presa Diretta. www.raiplay.it/video/2025/1...
raiplay.it
PresaDiretta 2025/26 - Missione Terra, quel che resta dei ghiacci - 12/10/2025 - Video - RaiPlay
Biomass, il satellite che studia la materia vivente presente nelle foreste. Cryosat, il satellite che da 15 anni monitora la fusione dei ghiacciai: grazie ai suoi dati, il progetto Glambie che riunisc...
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Oca sapiens @ocasapiens.bsky.social · 06/08/2025
#USpolitics #AGWdeniers @giacgrassi.bsky.social‬ e @caserinik.bsky.social fanno a polpette il rapporto dei 5 negaioli per il DOE. Sono stati più veloci del solito, ma gli argomenti di quei "mercanti di dubbi... sono già stati più volte confutati anche su Climalteranti."
climalteranti.it
Quando la scienza si piega alla politica: il negazionismo climatico nel rapporto del Dipartimento dell’Energia USA
Il 23 luglio 2025, il Dipartimento dell’Energia (DOE) degli Stati Uniti ha pubblicato un documento intitolato A Critical Review of Impacts of Greenhouse Gas E
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Giacomo Grassi @giacgrassi.bsky.social · 04/08/2025
What is the contribution of land use to countries' climate pledges? 🖋️ A new paper led by Rosa Roman-Cuesta explores this question and offers a way forward. 🌲 The study finds that land use makes up a quarter of global 2030 mitigation pledges — mostly reliant on external support. rdcu.be/eydhU 1/
rdcu.be
Land remains a blind spot in tracking progress under the Paris Agreement due to lack of data comparability
Communications Earth & Environment - Discrepancies exist between data used in countries’ greenhouse gas inventories and modelled benchmarks for the Paris agreement, according to an...
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Giacomo Grassi @giacgrassi.bsky.social · 31/07/2025
Why is the European forest carbon sink declining? How science can help reversing this trend? A perspective paper in Nature discusses these questions, highlighting the importance to better monitor forest resources and their resilience. www.nature.com/articles/s41...
nature.com
Securing the forest carbon sink for the European Union’s climate ambition - Nature
Actionable research recommendations are outlined to improve the monitoring and modelling of forest resources and their carbon sink, and to better inform forest management decisions and the European Gr...
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Giacomo Grassi @giacgrassi.bsky.social · 15/05/2025
📣 New Comment on Improving land-use emission estimates under the Paris Agreement in Nature Sustainability www.nature.com/articles/s41... Land carbon removals are key on the path to net-zero. Yet, confusion exists on what “anthropogenic” land-use C fluxes are. #LULUCF #IPCC #ParisAgreement 1/7
nature.com
Improving land-use emission estimates under the Paris Agreement - Nature Sustainability
Climate science and national emissions reporting communities have historically used different definitions and methods for anthropogenic land-based carbon removals. As the mitigation agenda accelerates...
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Giacomo Grassi @giacgrassi.bsky.social · 15/05/2025
On 6–7 May 2025, a JRC-EEA workshop on Land Use Land-Use Change and Forestry (LULUCF) gathered in Ispra (IT) over 50 GHG inventory experts, scientists and policymakers. We discussed challenges in GHG reporting and the decline of forest carbon sinks in Europe. Agenda/presentations: lnkd.in/dkJNxSWE
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Giacomo Grassi @giacgrassi.bsky.social · 27/03/2025
🧐 Confused about different estimates of land-use CO2 emissions? 🌲A new paper led by David Gibbs enhances comparability between satellite-based forest carbon flux maps and National greenhouse gas inventories. ➡️ Paper: lnkd.in/dU5-bv4P ➡️ Story: bit.ly/43qX2Mv ➡️ Country-level data: bit.ly/3XvBSJf
essd.copernicus.org
Revised and updated geospatial monitoring of 21st century forest carbon fluxes
Abstract. Earth observation data are increasingly used to estimate the magnitude and geographic distribution of greenhouse gas (GHG) fluxes and reduce overall uncertainty in the global carbon budget, ...
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Giacomo Grassi @giacgrassi.bsky.social · 21/02/2025
This is outrageous. Stupidity at work. It’s a sign of ideological hostility to everything that involves a multilateral dialogue and cooperation. If you ignore climate change, climate change will not ignore you.
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Giacomo Grassi @giacgrassi.bsky.social · 13/01/2025
2024: l'anno più caldo di sempre a #Radio3Scienza. Dopo l'ottima spiegazione di Elisa Palazzi, discuto cosa significhi “net-zero”, e perché stimare gli assorbimenti di CO2 da parte delle foreste è particolarmente complicato. www.raiplaysound.it/audio/2025/0...
raiplaysound.it
Radio3 Scienza | S2025 | 2024: l'anno più caldo di sempre | Rai Radio 3 | RaiPlay Sound
2024: l'anno più caldo di sempre - Radio3 Scienza - Venerdì scorso il servizio Copernicus, il programma coordinato e gestito dalla Commissione europea per il monitoraggio del nostro pianeta, ha certif...
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Giacomo Grassi @giacgrassi.bsky.social · 16/12/2024
Honored to have contributed to the IPCC AR7 scoping meeting last week
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Giacomo Grassi @giacgrassi.bsky.social · 19/11/2024
Is land use a source or a sink of CO2 globally? Well, it depends who you ask. A dialogue has started to reconcile different estimates. Two recent analyses offer complementary views: -IPCC Expert Meeting www.ipcc-nggip.iges.or.jp/public/mtdoc... -Allen et al. 2024 www.nature.com/articles/s41...
ipcc-nggip.iges.or.jp
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Giacomo Grassi @giacgrassi.bsky.social · 19/01/2023
nice 🧵 by Oliver Geden x.com/Oliver_Geden/s…
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Giacomo Grassi @giacgrassi.bsky.social · 19/01/2023
The first 'State of Carbon Dioxide Removal' is outIt was a pleasure to work with Will Lamb, Thomas Gasser, Matthew Gidden and other great scientists on Chapter 8: The CDR gap #carbonremoval #negativeemissions stateofcdr.org
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Giacomo Grassi @giacgrassi.bsky.social · 02/01/2023
Ieri ho partecipato su Radio Radicale a un dibattito con un professore che nega il contributo umano ai cambiamenti climatici. Quando nella scienza un uomo con un’opinione incontra un uomo con un fatto, l’uomo con l’opinione è un uomo morto. 1/ radioradicale.it/scheda/686869/…
radioradicale.it
Overshoot - Confronto sulle cause del cambiamento climatico con Alberto Prestininzi e Giacomo Grassi
Rubrica. Ascolta l'audio registrato domenica 1 gennaio 2023 in radio. Overshoot - Confronto sulle cause del cambiamento climatico con Alberto Prestininzi ...
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Giacomo Grassi @giacgrassi.bsky.social · 23/11/2022
Thanks for the feedback on the tweet on where we stand in the climate crisis Some saw excessive optimism. Don't forget: the figure is an analogy, for illustrative purposes. Others asked to reuse and edit. Here it is (slightly re-edited after comments drive.google.com/drive/folders/…
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Giacomo Grassi @giacgrassi.bsky.social · 21/11/2022
Communicating the climate crisis to non-experts is difficult. Here I tried to illustrate in a simple way where we stand and where we are heading.
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Giacomo Grassi @giacgrassi.bsky.social · 18/11/2022
It does not happen so often to sit in a panel with four Ministers (PNG, Honduras, Gabon, Belize) and the UNFCCC SBSTA chair, speaking about science, forest carbon and REDD+. But the best was a this rap up performance 😆Thanks to @CfRN_org for organizing linkedin.com/posts/bababrin…
linkedin.com
Baba Brinkman on LinkedIn: #cop27 #carboncredits #biodiversity #climatechange #conservation… | 11 comments
Here's my rap up performance from earlier today, at a UNFCCC side event featuring the environment ministers of Honduras, Gabon, and Belize, and the chief… | 11 comments on LinkedIn
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Giacomo Grassi @giacgrassi.bsky.social · 11/11/2022
Happy to have contributed to the Global Carbon Budget 2022 with 100+ other authors. Great Summaries here: -- carbonbrief.org/analysis-globa… x.com/peters_glen/st…
carbonbrief.org
Analysis: Global CO2 emissions from fossil fuels hit record high in 2022 - Carbon Brief
Global carbon dioxide emissions from fossil fuels and cement have increased by 1.0% in 2022,...
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Giacomo Grassi @giacgrassi.bsky.social · 11/11/2022
Puzzled by the huge (6 GtCO2/y) mismatch in global land-use CO2 flux between models and national inventories? Join/follow online this IPCC side event at COP27, Sat 12 Nov 2pm (Egypt) or 1pm (CET) Estimating GHG Emissions - Reconciling Different Approaches apps.ipcc.ch/outreach/progr…
apps.ipcc.ch
Outreach - Programme
This session aims to compare the different types of GHG emissions measurement approaches available, with a focus on land,[LM1]  and how they're reconciled in the WG III report for the purposes of Integrated Assessment Modelling. It will provide a deep dive into various approaches, highlighting their differences, and how they've been used for the WG III report. 
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Giacomo Grassi @giacgrassi.bsky.social · 09/11/2022
A fine ottobre è stato presentato l’Emissions gap report dell’UNEP, Programma Ambientale delle Nazioni Unite. Quali sono i principali risultati? A che punto siamo in Europa e in Italia? Ecco una sintesi in italiano @Climalteranti @marinavitullo1 climalteranti.it/2022/11/09/una…
climalteranti.it
Una finestra che si sta chiudendo
A fine ottobre è stato presentato l’Emissions gap report dell’UNEP, il Programma Ambientale delle Nazioni Unite. Quali sono i principali elementi di questo
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Giacomo Grassi @giacgrassi.bsky.social · 27/10/2022
I love the cover of the UNEP emissions gap report. It tells everything about the current climate crisis, the short time we have, and the extent of the challenge. Happy to have worked on chapter 2 (Global emissions trends) with @lamb_wf and others unep.org/resources/emis…
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Giacomo Grassi @giacgrassi.bsky.social · 20/10/2022
A new paper presents the most complete, disaggregated and up-to-date collection of country data on land-use CO2 fluxes (LULUCF).Globally, LULUCF is a net sink (-1.6 GtCO2/yr), largely due to forests, partly compensated by emissions from deforestation. 1/ essd.copernicus.org/articles/14/46…
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Giacomo Grassi @giacgrassi.bsky.social · 12/09/2022
Scientific position at the Joint Research Centre: Understanding the impacts of EU policies on land systems and GHG estimates from Land Use, Land-Use Change and Forestry. Last days to apply 👇 Code: 2022-IPR-D1-FGIV-021370 Deadline: 18/09/2022 recruitment.jrc.ec.europa.eu/?site=IPR&type…
recruitment.jrc.ec.europa.eu
JRC Recruitment Portal
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Giacomo Grassi @giacgrassi.bsky.social · 09/08/2022
Intervento a Prima Pagina di oggi, Radio tre, per rispondere all'affermazione del giornalista che “la scienza non è certa sull’origine del cambiamento climatico” (minuto 59). C'e' tanto lavoro ancora da fare .... raiplaysound.it/audio/2022/08/…
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Giacomo Grassi @giacgrassi.bsky.social · 21/06/2022
JRC LULUCF workshop 2022 55 participants in presence and 70 online, sharing challenges, questions and best practices on reporting GHG emissions and removals in land use and forestry in Europe. Thanks @matteo_vizzarri and colleagues for great support
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Giacomo Grassi @giacgrassi.bsky.social · 09/06/2022
Historic moment: kickoff of technical part of the #GlobalStocktake Critical step to implement the #ParisAgreement Based on the best available science, the collective climate progress will be assessed, with the aim to trigger additional efforts towards a safer future
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Giacomo Grassi @giacgrassi.bsky.social · 05/05/2022
The aim of this position is to support the ongoing work at JRC (e.g. for increasing confidence on land use carbon fluxes at country level essd.copernicus.org/preprints/essd… nature.com/articles/s4155… nature.com/articles/s4155…
nature.com
Reconciling global-model estimates and country reporting of anthropogenic forest CO2 sinks
Nature Climate Change - The model–inventory discrepancy in net land-use carbon emissions mainly results from conceptual differences in estimating anthropogenic forest sinks. A revised...
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Giacomo Grassi @giacgrassi.bsky.social · 04/04/2022
After two weeks of intense work, the landmark @IPCC_CH WGIII report has been approvedGreat work of hundreds of authors Proud of having contributed on land CO2 flux numbers, helping to understand & reconcile large differences among datasets ipcc.ch/report/sixth-a…
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Giacomo Grassi @giacgrassi.bsky.social · 08/02/2022
Want to know more on the role of the forest-based bioeconomy in mitigating climate change through carbon storage and material substitution? thanks @AvraamidesM @SanLopJavier @matteo_vizzarri audiovisual.ec.europa.eu/en/video/I-217…
audiovisual.ec.europa.eu
EC AV PORTAL
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Giacomo Grassi @giacgrassi.bsky.social · 22/01/2022
While all agree that forests are important, which of their functions should be prioritized, and consequently how forests should be managed, is the subject of an intense and polarized debate 👉 sciencedirect.com/science/articl…
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Giacomo Grassi @giacgrassi.bsky.social · 14/11/2021
In my view, two winners emerged at COP26 One is multilateralism. The fact that worse climate scenarios are less likely today than they were in 2015 shows that the Paris’ mechanisms - aimed at progressively more ambitious commitments through inclusive dialogue - are working. 1/4
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