Stefan A. Buehler
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View article: Intensified Diurnal Cycle of Convection Explains Half of Tropical High-Cloud Feedback
Intensified Diurnal Cycle of Convection Explains Half of Tropical High-Cloud Feedback Open
Tropical high clouds are the cloud type that contributes most to the uncertainty in climate sensitivity, as their feedback on global warming remains poorly constrained. Part of the reason for this is that global circulation models do not r…
View article: Advancements and continued challenges in global modelling and observations of atmospheric ice masses
Advancements and continued challenges in global modelling and observations of atmospheric ice masses Open
We assess the current status of atmospheric ice mass estimates by comparing global circulation models and global storm-resolving models with satellite observations. The analysis focuses on the frozen water path, which offers a more consist…
View article: Variation in shortwave water vapour continuum and impact on clear-sky shortwave radiative feedback
Variation in shortwave water vapour continuum and impact on clear-sky shortwave radiative feedback Open
This work assesses the impact of the current differences in the strength of the shortwave water vapour continuum on clear-sky calculations of shortwave radiative feedback. Three continuum models were used: the MT_CKD (Mlawer–Tobin–Clough–K…
View article: A conceptual framework for understanding longwave cloud effects on climate sensitivity
A conceptual framework for understanding longwave cloud effects on climate sensitivity Open
We add idealized clouds into a single-column model and show that cloud radiative effects, as observed from satellites, can be reproduced by a combination of high- and either low- or mid-level clouds. To quantify all-sky climate sensitivity…
View article: How to think about the clear-sky shortwave water vapor feedback
How to think about the clear-sky shortwave water vapor feedback Open
Earth’s climate feedback quantifies the response of Earth’s energy budget to temperature changes and thus determines climate sensitivity. The climate feedback is largely controlled by water vapor which absorbs both longwave radiation emitt…
View article: Unveiling the hidden warming layer: Metre-scale clear-sky radiative effects at stratocumulus cloud top
Unveiling the hidden warming layer: Metre-scale clear-sky radiative effects at stratocumulus cloud top Open
View article: Transient Darkening of Low‐Level Liquid Clouds by the 2022 Hunga Lamb Wave Observed in GOES‐R Imagery
Transient Darkening of Low‐Level Liquid Clouds by the 2022 Hunga Lamb Wave Observed in GOES‐R Imagery Open
The 15 January 2022 eruption of the Hunga volcano generated a Lamb wave, a global atmospheric pressure perturbation which propagates purely horizontally at the speed of sound. Far‐field observations of the daytime passage of the Lamb wave …
View article: Observations of the Clear-Sky Spectral Longwave Feedback at Surface Temperatures between 210 and 310 K
Observations of the Clear-Sky Spectral Longwave Feedback at Surface Temperatures between 210 and 310 K Open
The longwave feedback λ characterizes how Earth’s outgoing longwave radiation changes with near-surface air temperature T as , directly impacting climate sensitivity. Compared to λ , its spectrally resolved counterpart λ ν offers deeper in…
View article: The atmospheric radiative transfer simulator ARTS, version 2.6 — Deep python integration
The atmospheric radiative transfer simulator ARTS, version 2.6 — Deep python integration Open
View article: How to think about the shortwave water vapor feedback
How to think about the shortwave water vapor feedback Open
Earth's climate feedback quantifies how Earth's energy budget responds to temperature changes and thus directly determines climate sensitivity. To a large extent, the climate feedback is controlled by water vapor, the most powerful greenho…
View article: Insights on Tropical High‐Cloud Radiative Effect From a New Conceptual Model
Insights on Tropical High‐Cloud Radiative Effect From a New Conceptual Model Open
The new capabilities of global storm‐resolving models to resolve individual clouds allow for a more physical perspective on the tropical high‐cloud radiative effect and how it might change with warming. In this study, we develop a conceptu…
View article: Quantifying cloud masking in a single column
Quantifying cloud masking in a single column Open
We add idealized clouds into a single column model and show that the cloud radiative effects as observed from satellites can be reproduced by a combination of high and either low or mid-level clouds. To quantify all-sky climate sensitivity…
View article: Variation in shortwave water vapour continuum and impact on clear-sky shortwave radiative feedback
Variation in shortwave water vapour continuum and impact on clear-sky shortwave radiative feedback Open
This work assesses the impact of the current differences in the strength of the shortwave water vapour continuum on clear-sky calculations of shortwave radiative feedback. Four continuum models were used: the MT_CKD (Mlawer-Tobin-Clough-Kn…
View article: Observations of the Clear-Sky Spectral Longwave Feedback at Surface Temperatures Between 210 K and 310 K
Observations of the Clear-Sky Spectral Longwave Feedback at Surface Temperatures Between 210 K and 310 K Open
View article: Seasonal Emergence and Circulation Coupling of Moist Layers Over the Tropical Atlantic
Seasonal Emergence and Circulation Coupling of Moist Layers Over the Tropical Atlantic Open
Mid‐tropospheric elevated moist layers (EMLs) near the melting level have been found in various regional observational studies in the tropics. Recently, a preponderance of EMLs in the presence of aggregated convection was found in cloud re…
View article: Global Climate
Global Climate Open
Two night marine air temperature (NMAT) datasets are routinely updated and used for analysis in this section: UAHNMAT (Junod and Christy 2020) and CLASSnmat (Cornes et al. 2020). These datasets are evaluated in combination with the HadSST4…
View article: Introduction
Introduction Open
—J. Blunden and T. Boyer In 2023, La Niña conditions that generally prevailed in the eastern Pacific Ocean from mid-2020 into early 2023 gave way to a strong El Niño by October. Atmospheric concentrations of Earth’s major greenhouse gases—…
View article: Effect of Uncertainty in Water Vapor Continuum Absorption on CO<sub>2</sub> Forcing, Longwave Feedback, and Climate Sensitivity
Effect of Uncertainty in Water Vapor Continuum Absorption on CO<sub>2</sub> Forcing, Longwave Feedback, and Climate Sensitivity Open
We investigate the effect of uncertainty in water vapor continuum absorption at terrestrial wavenumbers on CO 2 forcing , longwave feedback λ , and climate sensitivity at surface temperatures T s between 270 and 330 K. We calculate this un…
View article: Observations of the Clear-Sky Spectral Longwave Feedback at Surface Temperatures Between 210K and 310K
Observations of the Clear-Sky Spectral Longwave Feedback at Surface Temperatures Between 210K and 310K Open
The longwave feedback λ characterizes how Earth’s outgoing longwave radiation changes with surface temperature Ts, making it an important quantity to estimate Earth’s climate sensitivity. Compared to the traditionally studied λ, its spectr…
View article: Supplementary data for "Effect of Uncertainty in Water Vapor Continuum Absorption on CO2 Forcing, Longwave Feedback, and Climate Sensitivity"
Supplementary data for "Effect of Uncertainty in Water Vapor Continuum Absorption on CO2 Forcing, Longwave Feedback, and Climate Sensitivity" Open
This dataset is supplementary to the article "Effect of Uncertainty in Water Vapor Continuum Absorption on CO2 Forcing, Longwave Feedback, and Climate Sensitivity". spectral_olr.nc This file contains the spectral outgoing longwave radiatio…
View article: Emergence and circulation coupling of moist layers over the tropical Atlantic
Emergence and circulation coupling of moist layers over the tropical Atlantic Open
Mid-tropospheric elevated moist layers (EMLs) near the melting level have been found in various regional observational studies in the tropics. Recently, a preponderance of EMLs in the presence of aggregated convection was found in cloud re…
View article: Effect of Uncertainty in Water Vapor Continuum Absorption on CO2 Forcing, Longwave Feedback, and Climate Sensitivity
Effect of Uncertainty in Water Vapor Continuum Absorption on CO2 Forcing, Longwave Feedback, and Climate Sensitivity Open
We assess the effect of uncertainty in water vapor continuum absorption on CO2 forcing F, longwave feedback λ, and climate sensitivity S at surface temperatures Ts between 270K and 330K. We calculate this uncertainty using a line-by-l…
View article: Understanding the tropical high-cloud feedback through the ice-water-path lens
Understanding the tropical high-cloud feedback through the ice-water-path lens Open
The response of tropical high clouds to global warming has the potential to produce an important climate feedback but remains poorly constrained. To improve our understanding of the tropical high-cloud feedback, we develop a conceptual mod…
View article: One‐Minute Resolution GOES‐R Observations of Lamb and Gravity Waves Triggered by the Hunga Tonga‐Hunga Ha'apai Eruptions on 15 January 2022
One‐Minute Resolution GOES‐R Observations of Lamb and Gravity Waves Triggered by the Hunga Tonga‐Hunga Ha'apai Eruptions on 15 January 2022 Open
We use high temporal‐resolution mesoscale imagery from the Geostationary Operational Environmental Satellite‐R (GOES‐R) series to track the Lamb and gravity waves generated by the 15 January 2022 Hunga Tonga‐Hunga Ha'apai eruption. The 1‐m…
View article: Extending the Atmospheric Radiative Transfer Simulator (Arts) to Shortwave Radiation
Extending the Atmospheric Radiative Transfer Simulator (Arts) to Shortwave Radiation Open
View article: The Atmospheric Radiative Transfer Simulator Arts, Version 2.6 — Deep Python Integration
The Atmospheric Radiative Transfer Simulator Arts, Version 2.6 — Deep Python Integration Open
View article: Supplementary data for "Effect of Uncertainty in Water Vapor Continuum Absorption on CO2 Forcing, Longwave Feedback, and Climate Sensitivity"
Supplementary data for "Effect of Uncertainty in Water Vapor Continuum Absorption on CO2 Forcing, Longwave Feedback, and Climate Sensitivity" Open
This dataset is supplementary to the article "Effect of Uncertainty in Water Vapor Continuum Absorption on CO2 Forcing, Longwave Feedback, and Climate Sensitivity". spectral_olr.nc This file contains the spectral outgoing longwave radiatio…
View article: Global Climate
Global Climate Open
International audience
View article: Introduction
Introduction Open
—J. BLUNDEN, T. BOYER, AND E. BARTOW-GILLIES Earth’s global climate system is vast, complex, and intricately interrelated. Many areas are influenced by global-scale phenomena, including the “triple dip” La Niña conditions that prevailed in…
View article: Defensive Perception: Estimation and Monitoring of Neural Network Performance under Deployment
Defensive Perception: Estimation and Monitoring of Neural Network Performance under Deployment Open
In this paper, we propose a method for addressing the issue of unnoticed catastrophic deployment and domain shift in neural networks for semantic segmentation in autonomous driving. Our approach is based on the idea that deep learning-base…