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A noise-aware combination of dual-frequency measurements from GPS radio occultation
One of the fundamental difficulties that arise when using GPS Radio Occultation (RO) data in exploiting the stratosphere is that the air becomes rarefied with increasing height...- publication PDF
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First retrievals of peroxyacetyl nitrate (PAN) from ground-based FTIR solar...
Peroxyacetyl nitrate (PAN) is the main tropospheric reservoir of NOx (NO þ NO2). Its lifetime can reach several months in the upper cold troposphere. This enables the long-range...- publication PDF
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The importance of time-varying forcing for QBO modulation of the atmospheric...
We present results from three multidecadal sensitivity experiments with time-varying solar cycle and quasi-biennial oscillation (QBO) forcings using National Center for...- publication PDF
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Comparison of CHAMP and TIME-GCM nonmigrating tidal signals in the...
Four years (2002-2005) of continuous accelerometer measurements taken onboard the CHAMP satellite (orbit altitude ~400 km) offer a unique opportunity to investigate the...- publication PDF
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A Spectral Vegetation Radiometer for Airborne Boundary-layer Research
This document presents a comprehensive description of the Spectral Vegetation Radiometer (SVR) used on NCAR aircraft to derive information about the vegetation cover....- publication PDF
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Editorial: Special issue on statistics of extremes in weather and climate
This article does not have an abstract or article summary.- publication PDF
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Downscaling extremes: A comparison of extreme value distributions in...
There is substantial empirical and climatological evidence that precipitation extremes have become more extreme during the twentieth century, and that this trend is likely to...- publication PDF
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Extreme-value analysis for the characterization of extremes in water...
Water managers need non-stationary tools to better characterize precipitation extremes. Statistical approaches based on extreme value theory (EVT) are increasingly being used,...- publication PDF
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Lower thermospheric material transport via lagrangian coherent structures
We show that inter-model variation due to under-constraint by observations impacts the ability to predict material transport in the lower thermosphere. Lagrangian coherent...- publication PDF
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Sources of CAM3 vorticity bias during northern winter from diagnostic study...
CAM3 (Community Atmosphere Model version 3) simulation bias is diagnosed using the vorticity equation. The study compares CAM3 output with ECMWF (European Centre for Medium-...- publication PDF
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The Community Climate System Model
The Community Climate System Model (CCSM) has been created to represent the principal components of the climate system and their interactions. Development and applications of...- publication PDF
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Increasing the skill of probabilistic forecasts: Understanding performance...
Four model-error schemes for probabilistic forecasts over the contiguous United States with the WRF-ARW mesoscale ensemble system are evaluated in regard to performance....- publication PDF
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A preliminary investigation of boundary layer effects on daytime CO₂...
Observations of CO₂ concentration at a mountaintop in the Colorado Rockies in summer show a large diurnal variability with minimum CO₂ concentrations found between 10:00 and...- publication PDF
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Global investigation of the Mg atom and ion layers using SCIAMACHY/Envisat...
Mg and Mg+ concentration fields in the upper mesosphere/lower thermosphere (UMLT) region are retrieved from SCIAMACHY/Envisat limb measurements of Mg and Mg+ dayglow emissions...- publication PDF
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A spatial model to examine rainfall extremes in Colorado's Front Range
Between 9th and 16th September 2013, northeast Colorado received some of its most extreme rainfall on record. The event affected 6 major rivers and their tributaries and 14...- publication PDF
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Solar physics from unconventional viewpoints
We explore new opportunities for solar physics that could be realized by future missions providing sustained observations from vantage points away from the Sun-Earth line. These...- publication PDF
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Some pitfalls in statistical downscaling of future climate
Statistical downscaling is generally successful and used widely to refine projections of future climate, though in some circumstances it can lead to highly erroneous results.- publication PDF
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Adapting the MPAS dynamical core for applications extending into the thermosphere
To extend the nonhydrostatic global Model for Prediction Across Scales (MPAS) for deep-atmosphere (geospace) applications, we have modified the model equations and numerics to...- publication PDF
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Analysis of improvements in MOPITT observational coverage over Canada
The Measurements of Pollution in the Troposphere (MOPITT) satellite instrument has been measuring global tropospheric carbon monoxide (CO) since March 2000, providing the...- publication PDF
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A three-dimensional Babcock-Leighton solar dynamo model
We present a three-dimensional (3D) kinematic solar dynamo model in which poloidal field is generated by the emergence and dispersal of tilted sunspot pairs (more generally...- publication PDF
