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Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
The warm seclusion or mature stage of the extratropical cyclone lifecycle often has structural characteristics reminiscent of major tropical cyclones including eye-like moats of calm air at the barotropic warm-core center surrounded by...
Anthropogenic aerosols are known to alter clouds and their optical properties by serving as cloud condensation nuclei. An increase in aerosol concentration causing smaller but more cloud droplets for a fixed liquid water content, thereby...
Satellite observations have revealed a small-scale (< 1000 km) air-sea coupling in regions of strong sea surface temperature (SST) gradients (e.g., fronts, currents, eddies, and tropical instability waves), where the surface wind and...
A comprehensive eigen-mode analysis of an intermediate coupled model linearized with respect to arrays of basic states is performed to study the regimes of leading ocean-atmosphere coupled modes of relevance to the El Niño Southern...
The finite-volume dynamical core has been developed for quasi-uniform cubed-sphere grids within a flexible modeling framework for direct implementation as a modular component within the global modeling efforts at NASA, GFDL-NOAA, NCAR, ...
Both observed and modeled global warming pattern shows a large surface polar warming and a large upper atmospheric warming in the tropics. This pattern leads to an amplification (reduction) of the temperature gradient at upper levels ...
Short-Range QPF over Korean Peninsula Using Nonhydrostatic Mesoscale Model & "Future Time" Data Assimilation Based on Rainfall Nowcasting from GMS Satellite Measurements
This study investigates data assimilation impacts of near-term satellite-derived nowcasted rainfall information (i.e., 3-hourly independently forecasted rainrates) in the initialization phase of a nonhydrostatic mesoscale model used for...
Ensemble forecasts are the primary tool used operationally to assess forecast uncertainty. Studies of ensemble forecasts, however, have shown that forecast verifications too frequently lie outside of the ensemble's range of possibilities...
Generation of an Empirical Soil Moisture Initialization and Its Potential Impact on Subseasonal Forecasting Skill of Continental Precipitation and Air Temperature
The effect of the PAR technique on the model soil moisture estimates is evaluated using the Global Soil Wetness Project Phase 2 (GSWP-2) multimodel analysis product (used as a proxy for global soil moisture observations) and actual in...
The plane-parallel hypothesis (PPH) used to approximate clouds in global climate models neglects the 3-D effects of clouds. Such effects can contribute as much as 20 Wm-2 to the downward longwave flux at the surface. Several...
This study utilizes the FLEXPART Lagrangian Particle Dispersion Model that was adapted to ingest output from the Weather Research and Forecasting (WRF) meteorological model. We perform four series of simulations over Iran and surrounding...
Tropical Cyclone Inner-Core Dynamics: A Latent Heat Retrieval and Its Effects on Intensity and Structure Change; and the Impacts of Effective Diffusion on the Axisymmetrization Process
Despite the fact that latent heating in cloud systems drives many atmospheric circulations, including tropical cyclones, little is known of its magnitude and structure due in large part to inadequate observations. In this work, a...
Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
