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Ecological processes dominate the ¹³C land disequilibrium in a Rocky...
Fossil fuel combustion has increased atmospheric CO₂ by ~ 115 µmol mol-1 since 1750 and decreased its carbon isotope composition (δ¹³C) by 1.7-2‰ (the ¹³C Suess effect). Because...- publication PDF
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The heated condensation framework. Part I: Description and Southern Great...
This study extends the heated condensation framework (HCF) presented in Tawfik and Dirmeyer to include variables for describing the convective background state of the atmosphere...- publication PDF
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Global atmospheric CO2 inverse models converging on neutral tropical land...
We have compared a suite of recent global CO2 atmospheric inversion results to independent airborne observations and to each other, to assess their dependence on differences in...- publication PDF
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The Community Climate System Model Version 3 (CCSM3)
The Community Climate System Model version 3 (CCSM3) has recently been developed and released to the climate community. CCSM3 is a coupled climate model with components...- publication PDF
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North Atlantic subsurface temperature response controlled by effective...
The northern North Atlantic (NNA) subsurface temperature in response to the slowdown of the Atlantic meridional overturning circulation (AMOC) is crucial for ice sheet calving...- publication PDF
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SSP-based land-use change scenarios: A critical uncertainty in future...
To better understand the role projected land-use changes (LUCs) may play in future regional climate projections, we assess the combined effects of greenhouse-gas (GHG)-forced...- publication PDF
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Thermodynamics of the Madden–Julian Oscillation in a regional model with...
To identify the main thermodynamic processes that sustain the Madden-Julian oscillation (MJO), an eddy available potential energy budget analysis is performed on a regional...- publication PDF
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A study of the nonlinear response of the upper atmosphere to episodic and...
Perturbations caused by geophysical and anthropogenic events on the ground have been observed to propagate upward and impact the upper atmosphere. Gravity waves with wavelengths...- publication PDF
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LGM paleoclimate constraints inform cloud parameterizations and equilibrium...
The Community Earth System Model version 2 (CESM2) simulates a high equilibrium climate sensitivity (ECS > 5 degrees C) and a Last Glacial Maximum (LGM) that is substantially...- publication PDF
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Tropical land carbon cycle responses to 2015/16 El Niño as recorded by...
The outstanding tropical land climate characteristic over the past decades is rapid warming, with no significant large-scale precipitation trends. This warming is expected to...- publication PDF
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Convectively coupled Kelvin and easterly waves in a regional climate...
This study evaluates the performance of a regional climate model in simulating two types of synoptic tropical weather disturbances: convectively-coupled Kelvin and easterly...- publication PDF
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Observed increase of TTL temperature and water vapor in polluted clouds over Asia
Satellite observations are analyzed to examine the correlations between aerosols and the tropical tropopause layer (TTL) temperature and water vapor. This study focuses on two...- publication PDF
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Uncertainty in model climate sensitivity traced to representations of...
Uncertainty in equilibrium climate sensitivity impedes accurate climate projections. While the intermodel spread is known to arise primarily from differences in cloud feedback,...- publication PDF
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Toward a numerical benchmark for warm rain processes
The Kinematic Driver-Aerosol (KiD-A) intercomparison was established to test the hypothesis that detailed warm microphysical schemes provide a benchmark for lower-complexity...- publication PDF
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Spam: A sparse matrix R package with emphasis on MCMC methods for Gaussian...
spam is an R package for sparse matrix algebra with emphasis on a Cholesky factorization of sparse positive definite matrices. The implementation of spam is based on the...- publication PDF
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Examining the two-way grid nesting for large-eddy simulation of the PBL...
The performance of two-way nesting for large eddy simulation (LES) of PBL turbulence is investigated using the Weather Research and Forecasting model framework. A pair of LES-...- publication PDF
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UCAR/NCAR Junior Faculty Forum on Future Scientific Directions
This article does not have an abstract or article summary.- publication PDF
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Influence of assimilating satellite-derived atmospheric motion vector...
The influence of assimilating enhanced atmospheric motion vectors (AMVs) on mesoscale analyses and forecasts of tropical cyclones (TC) is investigated. AMVs from the...- publication PDF
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Modeling organic aerosols in a megacity: Potential contribution of...
It has been established that observed local and regional levels of secondary organic aerosols (SOA) in polluted areas cannot be explained by the oxidation and partitioning of...- publication PDF
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Surface temperature dependence of tropical cyclone-permitting simulations in...
Tropical cyclone (TC)-permitting general circulation model simulations are performed with spherical geometry and uniform thermal forcing, including uniform sea surface...- publication PDF
