-
The diurnal and semidiurnal tides over Ascension Island (8° S, 14° W) and...
Horizontal winds in the mesosphere have been measured over Ascension Island (8° S, 14° W) in the tropical mid-Atlantic region throughout the years 2002â2011. The...- publication PDF
-
Raman shifter optimized for lidar at 1.5 μm wavelength
A Raman shifter is optimized for generating high-energy laser pulses at a 1.54 μm wavelength. A forward-scattering design is described, including details of the multiple pass...- publication PDF
-
Interactions between air pollution and terrestrial ecosystems: Perspectives...
Interactions between air pollution and terrestrial ecosystems play an important role in the Earth system. However, process-based knowledge of air pollution-terrestrial ecosystem...- publication PDF
-
Water vapour adjustments and responses differ between climate drivers
Water vapour in the atmosphere is the source of a major climate feedback mechanism and potential increases in the availability of water vapour could have important consequences...- publication PDF
-
Efficient graphics processing unit modeling of street-scale weather effects...
Over the last few years, the concept of incorporating aerial vehicles into the urban environment for diverse purposes has attracted ample interest and investment. These purposes...- publication PDF
-
Application of multivariate sensitivity analysis techniques to...
This work demonstrates the use of Sobol's sensitivity analysis framework to examine multivariate input-output relationships in dynamical systems. The methodology allows...- publication PDF
-
Comparison of Arctic and Antarctic stratospheric climates in chemistry...
Using nine chemistry-climate and eight associated no-chemistry models, we investigate the persistence and timing of cold episodes occurring in the Arctic and Antarctic...- publication PDF
-
Impact of model errors in convective transport on CO source estimates...
Estimates of surface fluxes of carbon monoxide (CO) inferred from remote sensing observations or free tropospheric trace gas measurements using global chemical transport models...- publication PDF
-
Multiscale interactions in an idealized Walker cell: Analysis with...
A new approach for analyzing multiscale properties of the atmospheric flow is proposed in this study. For that, the recently introduced isentropic streamfunctions are employed...- publication PDF
-
Ice properties of single-layer stratocumulus during the Mixed-Phase Arctic...
During the Department of Energy's Atmospheric Radiation Measurement Program's Mixed-Phase Arctic Cloud Experiment (M-PACE) in fall 2004, the University of North Dakota Citation...- publication PDF
-
Rotating turbulence under "precession-like" perturbation
The effects of changing the orientation of the rotation axis on homogeneous turbulence is considered. We perform direct numerical simulations on a periodic box of 10243 grid...- publication PDF
-
Potential evidence for the onset of alfvénic turbulence in trans-equatorial...
This study investigates Coronal Multi-channel Polarimeter Doppler-shift observations of a large, off-limb, trans-equatorial loop system observed on 2012 April 10-11. Doppler-...- publication PDF
-
Parallel implementations of ensemble data assimilation for atmospheric...
Numerical models are used to find approximate solutions to the coupled nonlinear partial differential equations associated with the prediction of the atmosphere. The model state...- publication PDF
-
Seasonal variation of thermospheric density and composition
Thermospheric neutral density and composition exhibit a strong seasonal variation, with maxima near the equinoxes, a primary minimum during northern hemisphere summer, and a...- publication PDF
-
Non-Standard Tests for Balloon Materials
This report is part of a series prepared for the Materials Research Project of the NCAR Scientific Balloon Facility in order to extend the reliability and capabilities of...- publication PDF
-
Ensemble-based assimilation of satellite all-sky microwave radiances...
Ensemble-based data assimilation of radar observations across inner-core regions of tropical cyclones (TCs) in tandem with satellite all-sky infrared (IR) radiances across the...- publication PDF
-
Projected drought risk in 1.5°C and 2°C warmer climates
The large socioeconomic costs of droughts make them a crucial target for impact assessments of climate change scenarios. Using multiple drought metrics and a set of simulations...- publication PDF
-
A generalized navigation correction method for airborne Doppler radar data
Uncertainties in aircraft inertial navigation system and radar-pointing angles can have a large impact on the accuracy of airborne dual-Doppler analyses. The Testud et al. (THL)...- publication PDF
-
The winter helium bulge revisited
A newly implemented helium module in the National Center for Atmospheric Research-Thermosphere Ionosphere Electrodynamics general circulation model offers the first opportunity...- publication PDF
-
A method for retrieving clouds with satellite infrared radiancesusing the...
Ensemble-based techniques have been widely utilized in estimating uncertainties in various problems of interest in geophysical applications. A new cloud retrieval method is...- publication PDF
