12,056 resources found

Here we describe an updated parameterization for prescribing stratospheric aerosol in the National Center for Atmospheric Research (NCAR) Community Earth System Model (CESM1)....

It has been demonstrated that climate models initialized with observations produce better simulations of Pacific sea surface temperature (SST) patterns than uninitialized...

Recent coordinated efforts, in which numerous general circulation climate models have been run for a common set of experiments, have produced large datasets of projections of...

Aerosol and tropospheric ozone transport to North America has important implications for regional air quality and climate. We present data from Chews Ridge, a remote mountaintop...

The Polar Weather Research and Forecasting Model (Polar WRF), a polar-optimized version of the WRF Model, is developed and made available to the community by Ohio State...

The Antarctic ozone hole demonstrates large-scale, man-made affects on our atmosphere. Surface observations now show that human produced ozone-depleting substances (ODSs) are...

Various generalizations of the univariate rank histogram have been proposed to inspect the reliability of an ensemble forecast or analysis in multidimensional spaces....

An observed turbulence encounter that occurred outside a mesoscale convective system over the central United States on 3 June 2005 is investigated using observations and high-...

Significant surface air temperature warming during summer 1979-2020 is not uniformly distributed in the northern midlatitudes over land but rather is confined to several...

This report presents a complete analysis of the forces acting on a cable-restrained balloon launch system and describes computer programs that may be used to determine optimum...

This study developed and evaluated a WRF-Chem modeling system that reflects the effect of recent emission regulations on the PM2.5 above East Asia by utilizing an updated...

The momentum variables of streamfunction and velocity potential are used as control variables in a number of operational variational data assimilation systems. However, in this...

The most abundant neutral constituent in the exospheric region (i.e., beyond ≈ 500 km altitude) is the atomic hydrogen (H); however, its density distributions predicted by...

Texas comprises the eastern portion of the Southwest region, where the convergence of climatological and geopolitical forces has the potential to put extreme stress on water...

In this paper, we extend our earlier work to provide additional evidence for an alternative scenario to explain the nature of events called 'explosive events'. The bidirected,...

Understanding carbon dioxide (CO₂) biospheric processes is of great importance because the terrestrial exchange drives the seasonal and interannual variability of CO₂ in the...

Understanding the physical mechanisms responsible for the cross-scale energy transport and plasma heating from solar wind into the Earth's magnetosphere is of fundamental...

With a ray-tracing procedure and variational data assimilation techniques, it is now possible to make direct use of radio occultation bending angles, rather than their derived...

This report contains speakers' abstracts as presented at the workshop on Numerical Modeling and Physical Reality held at the Mesa Laboratory of NCAR on September 3-5, 1997 and...

The paper describes an original method that is complementary to the radar-lidar algorithm method to characterize ice cloud properties. The method makes use of two measurements...