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A workshop on North American hail and hailstorms: What next?
A diverse group of global researchers, operational meteorologists, insurance and reinsurance analysts, private sector weather product developers, forensic engineers, and roofing...- publication PDF
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Assimilation of IASI satellite CO fields into a global chemistry transport...
This work evaluates the IASI CO product against independent in-situ aircraft data from the MOZAIC program and the POLARCAT aircraft campaign. The validation is carried out by...- publication PDF
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The role of negative CO₂ emissions for reaching 2°C -- insights from...
Limiting climate change to 2°C with a high probability requires reducing cumulative emissions to about 1600 GtCO₂ over the 2000-2100 period. This requires unprecedented rates of...- publication PDF
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Atmospheric river landfall-latitude changes in future climate simulations
The latitude of landfall for atmospheric rivers (ARs) is examined in the fully coupled half-degree version of the Community Climate System Model, version 4 (CCSM4) for warm...- publication PDF
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A new scenario framework for climate change research: Background, process,...
The scientific community is developing new global, regional, and sectoral scenarios to facilitate interdisciplinary research and assessment to explore the range of possible...- publication PDF
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Background error covariance with balance constraints for aerosol species and...
Balance constraints are important for background error covariance (BEC) in data assimilation to spread information between different variables and produce balance analysis...- publication PDF
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Estimation of turbulent heat fluxes via assimilation of air temperature and...
A number of studies have used time series of air temperature and specific humidity observations to estimate turbulent heat fluxes. These studies require the specification of...- publication PDF
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Sheared deep vortical convection in pre-depression Hagupit during TCS08
Airborne Doppler radar observations from the recent Tropical Cyclone Structure 2008 field campaign in the western North Pacific reveal the presence of deep, buoyant and vortical...- publication PDF
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An upper-branch Brewer-Dobson circulation index for attribution of...
We find that wintertime temperature anomalies near 4 hPa and 50 degrees N/S are related, through dynamics, to anomalies in ozone and temperature, particularly in the tropical...- publication PDF
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Ionospheric variability due to tides and quasi-two day wave interactions
The ionospheric variabilities due to planetary waves (PWs) are complicated due to their nonlinear interaction with tides (migrating diurnal and semidiurnal tides [DW1 and SW2])...- publication PDF
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Analysis of the surface temperature and wind forecast errors of the...
Investigating the characteristics of model-forecast errors using various statistical and object-oriented methods is necessary for providing useful guidance to end-users and...- publication PDF
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Effect of the Grell-Freitas deep convection scheme in quasi-uniform and...
The Grell-Freitas deep convection scheme (GF) has been implemented in the Community Atmosphere Model (CAM) with the nonhydrostatic Model for Prediction Across Scales dynamical...- publication PDF
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Assimilation of FORMOSAT-3/COSMIC electron density profiles into a coupled...
This paper presents our effort to assimilate FORMOSAT-3/COSMIC (F3/C) GPS Occultation Experiment (GOX) observations into the National Center for Atmospheric Research (NCAR)...- publication PDF
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Dreary state of precipitation in global models
New, definitive measures of precipitation frequency provided by CloudSat are used to assess the realism of global model precipitation. The character of liquid precipitation...- publication PDF
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An Overview of NCAR's Computing Environment
The Scientific Computing Division is charged with providing computing support for research conducted by NCAR staff and for extending the computing resources of university...- publication PDF
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Interpretation of tropical thermocline cooling in the Indian and Pacific...
A warming trend has been detected in the world's oceans in recent decades. The basin-averaged warming, however, shows a complex vertical structure in the Indian and Pacific...- publication PDF
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On the mixing-driven formation of the Extratropical Transition Layer (ExTL)
We present a case study on the formation and structure of the Extratropical Transition Layer (ExTL) using in situ observations and a Lagrangian chemical transport model. The...- publication PDF
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The heating efficiency of the exothermic reaction H + O3 in the mesosphere
An important source of heating in the mesosphere is the exothermic reaction of ozone with atomic hydrogen, which generates hydroxyl in a vibrationally excited state. Some of the...- publication PDF
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ULF wave analysis and radial diffusion calculation using a global MHD model...
The 17 March 2015 St. Patrick's Day Storm is the largest geomagnetic storm to date of Solar Cycle 24, with a Dst of -223 nT. The magnetopause moved inside geosynchronous orbit...- publication PDF
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Evaluation of turbulence measurement techniques from a single Doppler lidar
Measurements of turbulence are essential to understand and quantify the transport and dispersal of heat, moisture, momentum, and trace gases within the planetary boundary layer...- publication PDF
