Dan Ibarra

@danibarra.bsky.social

Filipino-American (paleo)climate scientist and biogeochemist. Working on weathering, carbon, lithium, water, lakes, caves and soils. Assistant Professor at Brown University. https://sites.brown.edu/ibarra-lab/

⚒️🍎🧪 Every SCIENTIST Has A Story! Meet Daniel Ibarra who tells us how we become interested in fossils and paleoclimate. It all started with a dinosaur museum! @danibarra.bsky.social @museumoftherockies.bsky.social See the FULL STORY here! 👇🏽👇🏽👇🏽 youtu.be/UxgW7aAnano youtube.com/shorts/ZuTuQ...

Why do we study geoscience? Hear Dan’s story from dinosaurs, to engineering, to microfossils!

YouTube video by Ethan Baxter's "Every Rock Has A Story"

youtube.com

A new paper co-authored by IBES Asst Prof @danibarra.bsky.social examines chemical fingerprints in preserved trees understand how plants responded to the low CO2 levels and cooler temperatures of the last glacial period, about 20,000 years ago. Read the full press release:

Science X / Phys.org@sciencex.bsky.social · 9mo ago

Analysis of ancient tree remains suggests that inefficient photorespiration during the last ice age may have helped maintain atmospheric carbon dioxide, contributing to climate stability.

Our new paper updating key metrics in the IPCC is now out, and the news is grim: ⬆️ Human induced warming now at 1.36C ⬆️ Rate of warming now 0.27C / decade ⬆️ Sharp increase in Earth's energy imbalance ⬇️ Remaining 1.5C carbon budget only 130 GtCO2 essd.copernicus.org/...

Indicators of Global Climate Change 2024: annual update of key indicators of the state of the climate system and human influence

Abstract. In a rapidly changing climate, evidence-based decision-making benefits from up-to-date and timely information. Here we compile monitoring datasets (published at https://doi.org/10.5281/zenodo.15639576; Smith et al., 2025a) to produce updated estimates for key indicators of the state of the climate system: net emissions of greenhouse gases and short-lived climate forcers, greenhouse gas concentrations, radiative forcing, the Earth's energy imbalance, surface temperature changes, warming attributed to human activities, the remaining carbon budget, and estimates of global temperature extremes. This year, we additionally include indicators for sea-level rise and land precipitation change. We follow methods as closely as possible to those used in the IPCC Sixth Assessment Report (AR6) Working Group One report. The indicators show that human activities are increasing the Earth's energy imbalance and driving faster sea-level rise compared to the AR6 assessment. For the 2015–2024 decade average, observed warming relative to 1850–1900 was 1.24 [1.11 to 1.35] °C, of which 1.22 [1.0 to 1.5] °C was human-induced. The 2024-observed best estimate of global surface temperature (1.52 °C) is well above the best estimate of human-caused warming (1.36 °C). However, the 2024 observed warming can still be regarded as a typical year, considering the human-induced warming level and the state of internal variability associated with the phase of El Niño and Atlantic variability. Human-induced warming has been increasing at a rate that is unprecedented in the instrumental record, reaching 0.27 [0.2–0.4] °C per decade over 2015–2024. This high rate of warming is caused by a combination of greenhouse gas emissions being at an all-time high of 53.6±5.2 Gt CO2e yr−1 over the last decade (2014–2023), as well as reductions in the strength of aerosol cooling. Despite this, there is evidence that the rate of increase in CO2 emissions over the last decade has slowed compared to the 2000s, and depending on societal choices, a continued series of these annual updates over the critical 2020s decade could track decreases or increases in the rate of the climatic changes presented here.

essd.copernicus.org

I’m not going to retweet that NOAA propaganda post about deep sea mining. Instead, I’ll tell you that I don’t know a single NOAA scientist who would promote deep sea mining in this way, because the available science we have does not justify exploitation of deep sea habitats for minerals.

NOAA has quietly reported that they will soon decommission 14 datasets, products, and catalogs related to earthquakes and marine, coastal, and estuary science. According to the list, these data sources will be “decommissioned and will no longer be available” by early May. eos.org/research-and...

NOAA Datasets Will Soon Disappear - Eos

NOAA has quietly reported that they will soon decommission 14 datasets, products, and catalogs related to earthquakes and marine, coastal, and estuary science.

eos.org

Made it to Naga City, Philippines to present on hydroclimate variability past and present at a workshop focusing on climate research in Southeast Asia! Thrilled to be sharing my former @brown-ibes.bsky.social postdoc Natasha Sekhon’s work and my student’s work on tropical rivers and caves.

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