Results 91 to 100 of about 1,031 (171)

AMOC Weakening Shapes Ocean Heat Storage Patterns Under Strong Idealized Warming

open access: yesGeophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract The ocean absorbs most of the excess heat induced by anthropogenic greenhouse gas emissions. Among the different processes, a key role has been attributed to the Atlantic Meridional Overturning Circulation (AMOC), both for heat uptake and redistribution among basins, yet a comprehensive view remains elusive. In this study, we investigate how a
Chiara Ventrucci   +4 more
wiley   +1 more source

Oxygen Isotopes in Tree Rings Track Neotropical Climate Dynamics

open access: yesGeophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Central America faces increasing risks from climate variability and extreme weather events. Limited observational records and model biases have constrained our ability to understand the ocean–atmosphere dynamics that influence precipitation variability in the region over longer timescales.
Isabel González‐Méndez   +6 more
wiley   +1 more source

Sources of Subseasonal Predictability for Precipitation in South America Based on Model Experiments

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract This study investigates the sources of predictability underlying subseasonal precipitation skill over South America in existing subseasonal prediction systems. Using subseasonal re‐forecasts from the NCAR‐CESM2 model, we demonstrate that significant skill persists even when interannual variability is removed.
Kathy Pegion   +2 more
wiley   +1 more source

Surface Fluxes and Tropical Intraseasonal Variability: a Reassessment

open access: yesJournal of Advances in Modeling Earth Systems, 2010
The authors argue that interactive feedbacks involving surface moist enthalpy fluxes, both turbulent and radiative, are important to the dynamics of tropical intraseasonal variability.
Adam H Sobel   +3 more
doaj   +1 more source

Mapping NAT‐Containing Polar Stratospheric Clouds in the Antarctic Stratosphere Using Nadir Infrared Radiance Observations

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract Polar stratospheric clouds (PSCs) play a key role in the formation of the Antarctic ozone hole. Here, we report the first observations of the most abundant PSC composition class, NAT‐containing mixtures (one of whose components is nitric acid trihydrate, NAT, particles), from measurements of a passive nadir‐viewing sounder, the Infrared ...
Manon Hermans   +4 more
wiley   +1 more source

Spectral Outgoing Longwave Radiation Derived From the Polar Radiant Energy in the Far Infrared Experiment (PREFIRE) Measurements: Algorithms and Validations

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract The far‐infrared (>16 μm) spectrum plays a crucial role in Earth's radiation budget but was rarely observed from space before 2024. Two Polar Radiant Energy in the Far Infrared Experiment (PREFIRE) satellites, PREFIRE2 (SAT‐2) and PREFIRE1 (SAT‐1), were launched in 2024.
Xiuhong Chen   +9 more
wiley   +1 more source

Latitudinal differences of changes in Northern Hemisphere clear-sky outgoing longwave radiation over the past 4 decades (1979–2021)

open access: yesEnvironmental Research Letters
Earth’s energy budget is modulated by climate forcings and feedbacks. Outgoing longwave radiation (OLR) is a critical component of the Earth’s energy budget, and the balance between absorbed solar radiation and OLR determines the net gain of energy of ...
Lynn A Hirose   +3 more
doaj   +1 more source

An Evaluation of Radiation Parameterizations in a Meso-Scale Weather Prediction Model Using Satellite Flux Observations

open access: yesRemote Sensing
This study evaluates the forecast performance of four radiation parameterization schemes—the Rapid Radiative Transfer Model for General Circulation Models (RRTMG), its improved version RRTMG-K, the infrequently applied variant, RRTMG-K60x, and the neural
Jihee Choi   +5 more
doaj   +1 more source

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