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Bounding global aerosol radiative forcing of climate change
Aerosols interact with radiation and clouds. Substantial progress made over the past 40 years in observing, understanding, and modeling these processes helped quantify the...- publication PDF
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Using TES retrievals to investigate PAN in North American biomass burning plumes
Peroxyacyl nitrate (PAN) is a critical atmospheric reservoir for nitrogen oxide radicals, and plays a lead role in their redistribution in the troposphere. We analyze new...- publication PDF
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Lagrangian condensation microphysics with Twomey CCN activation
We report the development of a novel Lagrangian microphysics methodology for simulations of warm ice-free clouds. The approach applies the traditional Eulerian method for the...- publication PDF
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Structure and performance of GFDL's CM4.0 climate model
We describe the Geophysical Fluid Dynamics Laboratory's CM4.0 physical climate model, with emphasis on those aspects that may be of particular importance to users of this model...- publication PDF
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Response of Arctic ozone to sudden stratospheric warmings
Sudden stratospheric warmings (SSWs) are the main source of intra-seasonal and interannual variability in the extratropical stratosphere. The profound alterations to the...- publication PDF
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Dynamical mechanism for the increase in tropical upwelling in the lowermost t...
The Brewer-Dobson circulation strengthens in the lowermost tropical stratosphere during warm El Niño-Southern Oscillation (ENSO) events. Dynamical analyses using the most recent...- publication PDF
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Magnetic reconnection at the dayside magnetopause in global Lyon-Fedder-Mobar...
We present a survey of magnetic reconnection at the dayside magnetopause using the Lyon-Fedder-Mobarry global magnetospheric simulation code. We explore simulations of the...- publication PDF
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Coupled atmosphere-ocean data assimilation experiments with a low-order clima...
A simple idealized atmosphere--ocean climate model and an ensemble Kalman filter are used to explore different coupled ensemble data assimilation strategies. The model is a...- publication PDF
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Effects of complex terrain on the shortwave radiative balance: A sub-grid-sca...
Parameterizing incident solar radiation over complex topography regions in Earth system models (ESMs) remains a challenging task. In ESMs, downward solar radiative fluxes at the...- publication PDF
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Characterizing sampling biases in the trace gas climatologies of the SPARC Da...
Monthly zonal mean climatologies of atmospheric measurements from satellite instruments can have biases due to the nonuniform sampling of the atmosphere by the instruments. We...- publication PDF
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Aerostatic Lift of Helium and Hydrogen in the Atmosphere
The purpose of this report is to provide a simple and accurate method of making buoyancy calculations of lift gases. A table is included which gives pertinent model atmospheric...- publication PDF
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Derivation of turbulent kinetic energy from a first-order nonlocal planetary ...
Turbulent kinetic energy (TKE) is derived from a first-order planetary boundary layer (PBL) parameterization for convective boundary layers: the nonlocal K-profile Yonsei...- publication PDF
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The response of tropical cyclone statistics to an increase in CO₂ with fixed ...
The effects on tropical cyclone statistics of doubling CO₂, with fixed sea surface temperatures (SSTs), are compared to the effects of a 2-K increase in SST, with fixed CO₂,...- publication PDF
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Tree species effects on ecosystem water-use efficiency in a high-elevation, s...
Ecosystem water-use efficiency (eWUE; the ratio of net ecosystem productivity to evapotranspiration rate) is a complex landscape-scale parameter controlled by both physical and...- publication PDF
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Assessing regional scale predictions of aerosols, marine stratocumulus, and t...
This study assesses the ability of the recent chemistry version (v3.3) of the Weather Research and Forecasting (WRF-Chem) model to simulate boundary layer structure, aerosols,...- publication PDF
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Magnetospheric cavity modes driven by solar wind dynamic pressure fluctuations
We present results from Lyon-Fedder-Mobarry (LFM) global, three-dimensional magnetohydrodynamic (MHD) simulations of the solar wind-magnetosphere interaction. We use these...- publication PDF
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Ensemble-variational integrated localized data assimilation
Hybrid variational ensemble data assimilation (hybrid DA) is widely used in research and operational systems, and it is considered the current state of the art for the...- publication PDF
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Calculation of average, uncertainty range, and reliability of regional climat...
The "reliability ensemble averaging" (REA) method for calculating average, uncertainty range, and a measure of reliability of simulated climate changes at the subcontinental...- publication PDF
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Spatiotemporal evolution of melt ponds on Arctic sea ice
Melt ponds on sea ice play an important role in the Arctic climate system. Their presence alters the partitioning of solar radiation: decreasing reflection, increasing...- publication PDF
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Detecting clouds associated with jet engine ice crystal icing
In the past two decades, more than 150 jet engine power-loss and damage events have been attributed to a phenomenon known as ice crystal icing (ICI). Ingestion of large numbers...- publication PDF
