Paul Ginoux
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View article: Dust Direct Radiative Effect Including Large Particles and Component Minerals
Dust Direct Radiative Effect Including Large Particles and Component Minerals Open
The direct radiative effect (DRE) of dust aerosols in Earth system models (ESMs) remains highly uncertain, largely due to inadequate representations of particle size distribution (PSD) and mineral composition. Using NASA's Earth Surface Mi…
View article: Resolving the roles of soot and dust in cirrus cloud ice formation at regional and global scales: insights from parcel and climate models
Resolving the roles of soot and dust in cirrus cloud ice formation at regional and global scales: insights from parcel and climate models Open
Atmospheric aerosols can serve as ice-nucleating particles (INPs), influencing the formation and properties of cirrus clouds. While mineral dust has long been considered an effective INP, the role of soot particles remains less explored, l…
View article: The Contribution of Ephemeral Lakes to Global Dust Cycle and Direct Radiative Effect
The Contribution of Ephemeral Lakes to Global Dust Cycle and Direct Radiative Effect Open
Despite their tiny size, ephemeral lakes with their dry smooth surface may play a major role in the dust life cycle at global scale. However, their impacts on Earth's climate systems, and in particular direct radiative effects have been un…
View article: Modeling Large Dust Aerosols in the Community Earth System Model Version 2 (CESM2)
Modeling Large Dust Aerosols in the Community Earth System Model Version 2 (CESM2) Open
Dust aerosols have a wide size distribution from less than 1.0 nm to over 100 μm and dominate the Earth’s atmospheric aerosol mass. However, most Earth system models inadequately represent dust aerosols larger than 10 µm in diameter, limit…
View article: Spaceborne mineral mapping reduces dust’s shortwave radiative impact uncertainty
Spaceborne mineral mapping reduces dust’s shortwave radiative impact uncertainty Open
Mineral dust impacts climate through complex interactions with radiation, which remain poorly quantified due to uncertainties in the amount of light-absorbing iron oxides within dust particles. NASA’s EMIT imaging spectrometer, now deliver…
View article: ENSO‐Driven Variability in Ozone Sources and Its Impact on Tropospheric Ozone Radiative Forcing
ENSO‐Driven Variability in Ozone Sources and Its Impact on Tropospheric Ozone Radiative Forcing Open
Ozone is the third strongest anthropogenic greenhouse gas with highest radiative efficiency in the tropical upper troposphere. Variability driven by El Niño‐Southern Oscillation (ENSO) modulates tropospheric column ozone instantaneous radi…
View article: Fallowed agricultural lands dominate anthropogenic dust sources in California
Fallowed agricultural lands dominate anthropogenic dust sources in California Open
Air pollution remains a major problem in many parts of California, significantly impacting public health and regional climate. However, the contribution of anthropogenic dust from agricultural sources, among major pollutants in California’…
View article: Quantifying Equilibrium Climate Sensitivity to Atmospheric Chemistry and Composition Representations in GFDL-CM4.0 and GFDL-ESM4.1
Quantifying Equilibrium Climate Sensitivity to Atmospheric Chemistry and Composition Representations in GFDL-CM4.0 and GFDL-ESM4.1 Open
View article: ENSO-driven Variability in Ozone Sources and Its Impact on Tropospheric Ozone Radiative Forcing
ENSO-driven Variability in Ozone Sources and Its Impact on Tropospheric Ozone Radiative Forcing Open
View article: The Fast Response of Land Precipitation to Historical Anthropogenic Black Carbon and Sulfate Aerosols in the GFDL ESM4 Climate Model
The Fast Response of Land Precipitation to Historical Anthropogenic Black Carbon and Sulfate Aerosols in the GFDL ESM4 Climate Model Open
Aerosol effects on precipitation are crucial factors in climate change, yet they remain poorly understood, representing a large source of uncertainty in climate models. In the Geophysical Fluid Dynamics Laboratory (GFDL) Earth system model…
View article: Implementation of Dynamic Fire Injection Height in GFDL's Atmospheric Model (AM4.0): Impacts on Aerosol Profiles and Radiation
Implementation of Dynamic Fire Injection Height in GFDL's Atmospheric Model (AM4.0): Impacts on Aerosol Profiles and Radiation Open
Wildfires inject aerosols into the atmosphere at varying altitudes, modifying long‐range transport, which impacts Earth's climate system and air quality. Most global climate models use prescribed fixed‐height injections, not accounting for…
View article: An Empirical Parameterization to Separate Coarse and Fine Mode Aerosol Optical Depth Over Land
An Empirical Parameterization to Separate Coarse and Fine Mode Aerosol Optical Depth Over Land Open
Retrieving the fine‐mode fraction (FMF) of aerosol optical depth from satellite data is crucial for understanding the impact of natural versus anthropogenic aerosols on climate and air quality. However, few high‐quality global FMF products…
View article: Quantifying radiative effects of light-absorbing particle deposition on snow at the SnowMIP sites
Quantifying radiative effects of light-absorbing particle deposition on snow at the SnowMIP sites Open
The deposition of light-absorbing particles (LAPs) leads to a decrease in surface albedo over snow-covered surfaces. This effect, by increasing the energy absorbed by the snowpack, enhances snowmelt and accelerates snow aging, process that…
View article: Improving large-scale snow albedo modeling using a climatology of light-absorbing particle deposition
Improving large-scale snow albedo modeling using a climatology of light-absorbing particle deposition Open
Light-absorbing particles (LAPs) deposited at the snow surface significantly reduce its albedo and strongly affect the snowmelt dynamics. The explicit simulation of these effects with advanced snow radiative transfer models is generally as…
View article: The Efficient Integration of Dust and Numerical Weather Prediction for Renewable Energy Applications
The Efficient Integration of Dust and Numerical Weather Prediction for Renewable Energy Applications Open
The growing demand for renewable energy underscores the importance of accurate dust forecasting in regions with abundant wind and solar resources. However, leading real‐time global numerical weather prediction (NWP) models often lack dust …
View article: Fallowed agricultural lands dominate anthropogenic dust sources in California.
Fallowed agricultural lands dominate anthropogenic dust sources in California. Open
Air pollution remains a major problem in many parts of California, significantly impacting public health and regional climate. However, the contribution of anthropogenic dust particles from agricultural sources, among the major pollutants,…
View article: A global–land snow scheme (GLASS) v1.0 for the GFDL Earth System Model: formulation and evaluation at instrumented sites
A global–land snow scheme (GLASS) v1.0 for the GFDL Earth System Model: formulation and evaluation at instrumented sites Open
Snowpacks modulate water storage over extended land regions and at the same time play a central role in the surface albedo feedback, impacting the climate system energy balance. Despite the complexity of snow processes and their importance…
View article: Decreased dust particles amplify the cloud cooling effect by regulating cloud ice formation over the Tibetan Plateau
Decreased dust particles amplify the cloud cooling effect by regulating cloud ice formation over the Tibetan Plateau Open
Ice-nucleating particles (INPs) can initiate cloud ice formation, influencing cloud radiative effects (CRE) and climate. However, the knowledge of INP sources, concentrations, and their impact on CRE over the Tibetan Plateau (TP)—a highly …
View article: Characterization of the particle size distribution, mineralogy, and Fe mode of occurrence of dust-emitting sediments from the Mojave Desert, California, USA
Characterization of the particle size distribution, mineralogy, and Fe mode of occurrence of dust-emitting sediments from the Mojave Desert, California, USA Open
Constraining dust models to understand and quantify the effect of dust upon climate and ecosystems requires comprehensive analyses of the physiochemical properties of dust-emitting sediments in arid regions. Building upon previous studies …
View article: Where Dust Comes From: Global Assessment of Dust Source Attributions With AeroCom Models
Where Dust Comes From: Global Assessment of Dust Source Attributions With AeroCom Models Open
The source of dust in the global atmosphere is an important factor to better understand the role of dust aerosols in the climate system. However, it is a difficult task to attribute the airborne dust over the remote land and ocean regions …
View article: Letter to the Editor regarding Chappell et al., 2023, “Satellites reveal Earth's seasonally shifting dust emission sources”
Letter to the Editor regarding Chappell et al., 2023, “Satellites reveal Earth's seasonally shifting dust emission sources” Open
View article: Improving large-scale snow albedo modelling using a climatology of light-absorbing particle deposition
Improving large-scale snow albedo modelling using a climatology of light-absorbing particle deposition Open
Light-absorbing particles (LAPs) deposited at the snow surface significantly reduce its albedo and strongly affect the snow melt dynamics. The explicit simulation of these effects with advanced snow radiative transfer models is generally a…
View article: Modeling impacts of dust mineralogy on fast climate response
Modeling impacts of dust mineralogy on fast climate response Open
Mineralogical composition drives dust impacts on Earth's climate systems. However, most climate models still use homogeneous dust, without accounting for the temporal and spatial variation in mineralogy. To quantify the radiative impact of…
View article: Quantifying radiative effects of light–absorbing particles deposition on snow at the SnowMIP sites
Quantifying radiative effects of light–absorbing particles deposition on snow at the SnowMIP sites Open
The deposition of light-absorbing particles (LAPs) leads to a decrease of surface albedo over snow covered surfaces. This effect, by increasing the energy absorbed by the snowpack, enhances snow melt and accelerates snow aging, process whi…
View article: Implementation of Dynamic Fire Injection Height in GFDL’s Atmospheric Model (AM4.0): Impacts on Aerosol Profiles and Radiation
Implementation of Dynamic Fire Injection Height in GFDL’s Atmospheric Model (AM4.0): Impacts on Aerosol Profiles and Radiation Open
Wildfires inject aerosols into the atmosphere at varying altitudes, modifying long-range transport, which impacts Earth’s climate system and air quality. Most global climate models use prescribed fixed-height injections, not accounting for…
View article: The Land Component LM4.1 of the GFDL Earth System Model ESM4.1: Model Description and Characteristics of Land Surface Climate and Carbon Cycling in the Historical Simulation
The Land Component LM4.1 of the GFDL Earth System Model ESM4.1: Model Description and Characteristics of Land Surface Climate and Carbon Cycling in the Historical Simulation Open
We describe the baseline model configuration and simulation characteristics of the Geophysical Fluid Dynamics Laboratory (GFDL)'s Land Model version 4.1 (LM4.1), which builds on component and coupled model developments over 2013–2019 for t…
View article: Comment on egusphere-2024-506
Comment on egusphere-2024-506 Open
Abstract. Snowpack modulates water storage over extended land regions, and at the same time plays a central role in the surface albedo feedback, impacting the climate system energy balance. Despite the complexity of snow p…
View article: The GFDL Variable‐Resolution Global Chemistry‐Climate Model for Research at the Nexus of US Climate and Air Quality Extremes
The GFDL Variable‐Resolution Global Chemistry‐Climate Model for Research at the Nexus of US Climate and Air Quality Extremes Open
We present a variable‐resolution global chemistry‐climate model (AM4VR) developed at NOAA's Geophysical Fluid Dynamics Laboratory (GFDL) for research at the nexus of US climate and air quality extremes. AM4VR has a horizontal resolution of…
View article: Stronger early-spring dust outbreaks across the Northern Hemispheric mid-latitudes in a warmer climate
Stronger early-spring dust outbreaks across the Northern Hemispheric mid-latitudes in a warmer climate Open
This research focuses on changes in early-spring dust emissions from Northern Hemispheric mid-latitudes, in the context of global warming. Our study was motivated by the abnormally early and strong dust storms across East Asia in March 202…
View article: Oceanic and Atmospheric Drivers of Post-El-Niño Chlorophyll Rebound in the Equatorial Pacific 
Oceanic and Atmospheric Drivers of Post-El-Niño Chlorophyll Rebound in the Equatorial Pacific  Open
The El Niño-Southern Oscillation (ENSO) strongly influences phytoplankton in the tropical Pacific, with El Niño conditions suppressing productivity in the equatorial Pacific (EP) and placing nutritional stresses on marine ecosy…