Low carbon dioxide levels during the last glacial period enhanced photorespiration in trees across North America, indicating a decline in land plant productivity, according to measurements of clumped ...

Low carbon dioxide levels during the last glacial period enhanced photorespiration in trees across North America, indicating a decline in land plant productivity, according to measurements of clumped ...

Ancient trees may have played a key role in regulating Earth's climate during the last ice age—by 'breathing' less efficiently.

Position Summary The Climate and Paleoclimate Lab in the Department of Earth, Environmental, and Planetary Sciences at WashU in St. Louis seeks a Postdoctoral Research Associate in tropical climate/pa...

Mid-Holocene and the future warming induces a North Pacific response resulting in sustained winter precipitation deficits and drought over the Southwestern United States, according to new palaeoclimat...

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.

Notices of changes are formal public announcements of planned services changes to applications and other products.

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

Notices of changes are formal public announcements of planned services changes to applications and other products.

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

The infrastructure required to host climate talks in Belém is undermining the cause, campaigners say.

Rationale Stable oxygen isotope measurements in silicate clays, such as smectite and kaolinite, provide crucial information for understanding Earth's climate history and environmental changes. Despi...

Brown University's Ibarra Lab recently helped verify a meteorite that landed in a Pennsylvania resident's ice cream.

Different phases in end of the Cretaceous massive flood basalt volcanism had a differential impact on the global climate system.

At White Sands National Park 22,000 years ago, impressive footprint evidence is now joined by a technology for transit.