12.056 resources found

This study presents the first modeling estimates of the potential effect of gas-and particle-phase organic photolysis reactions on the formation and lifetime of secondary...

Electrical impedance tomography (EIT) is a noninvasive imaging modality, where imperceptible currents are applied to the skin and the resulting surface voltages are measured. It...

This study examines two factors impacting initiation of moist deep convection: free-tropospheric environmental relative humidity (phi(E)) and horizontal scale of subcloud ascent...

We present preliminary asteroseismic results from Kepler on three G-type stars. The observations, made at one-minute cadence during the first 33.5 days of science operations,...

Temperature is the key variable in the study of climate changes in the past and future. Most previous studies on past temperature reconstructions, however, have focused on the...

The ratio of O number density to N-2 number density (O/N-2) is an important parameter to describe thermospheric composition changes and its effects on the ionosphere. Based on...

Previous studies have documented a poleward shift in the subsiding branches of Earth's Hadley circulation since 1979 but have disagreed on the causes of these observed changes...

Sudden stratospheric warmings (SSWs) are the main source of intra-seasonal and interannual variability in the extratropical stratosphere. The profound alterations to the...

Most previous modeling studies about black carbon (BC) transport and its impact over the Tibetan Plateau (TP) conducted simulations with horizontal resolutions coarser than 20...

The land-sea contrast in the Maritime Continent (MC) has been found to influence the Madden-Julian Oscillation (MJO). However, the specific contribution from individual islands...

This paper presents a new data assimilation approach based on the particle filter (PF) that has potential for nonlinear/non-Gaussian applications in geoscience. Particle filters...

An ensemble Kalman filter reanalysis has been archived in the Research Data Archive at the National Center for Atmospheric Research. It used a CAM6 configuration of the...

The problem is posed and solved for the oceanic surface boundary layer in the presence of wind stress, stable density stratification, equilibrium wind-waves, and remotely...

The upper boundary height of the traditional community general circulation model of the ionosphere-thermosphere system is too low to be applied to the topside...

Various improvements were made to a state-of-the-art aerosol-cloud model and comparison of the model results with observations from field campaigns was performed. The strength...

This document describes the computer software developed to process particle size spectrometer and thermodynamic data obtained with the T-28 "hail" research aircraft. Five...

Vertical wind tunnel experiments were carried out to investigate the melting of low-density lump graupel while floating at their terminal velocities. The graupel characteristics...

The mesosphere and lower thermosphere (MLT) is a dynamic layer of the earth's atmosphere. This region marks the interface at which neutral atmosphere dynamics begin to influence...

150 kilometer echoes are strong, coherent echoes observed by equatorial radars looking close to perpendicular to Earth's magnetic field. Observations over a day show a distinct...

Observational analysis has indicated a strong connection between the stratospheric quasi-biennial oscillation (QBO) and tropospheric Madden-Julian oscillation (MJO), with MJO...